EP0615349A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Methods and apparatus for recording, reproducing, transmitting and/or receiving compressed data and recording medium therefor
Assignee: Sony Corp
•
Filing: 1994-03-09
•
Granted: —
•
Expires: 2014-03-09
Abstract
Abstract A technique for recording, reproducing, transmitting and/or receiving compressed data utilizes frequency dividing filters (101, 102) for dividing the frequency range of digital signals into plural frequency bands, orthogonal transform circuits (103-105) for producing signal components in plural two-dimensional blocks along time and frequency, an adaptive bit allocation and encoding circuit (108) for quantizing and compressing the information for each two-dimensional block, and a bit allocation and calculating circuit (107). When recording the information together with information compressing parameters for each two-dimensional block, the information compressing parameters for at least two two-dimensional blocks are recorded collectively to avoid complexity in the structure of the sampling frequency signal generating circuits or the like that would otherwise be caused in the case of providing plural sampling frequencies, as well as to prevent an increase in hardware scale. <IMAGE>
Inventors
- 👤 Osamu C/O Int. Property Division Shimoyoshi
- 👤 Kenzo C/O Int. Property Division Akagiri
- 👤 Hiroshi C/O Int. Property Division Suzuki
- 👤 Makoto C/O Int. Property Division Mitsuno
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 23:14
CPC Classifications
H; H03; H03M; H03M7/00; H03M7/30; G; G11; G11B; G11B20/00; G11B20/00007; G10; G10L; G10L19/00; G10L19/02; G10L19/0204; G10L19/0208; G10L19/022; G11B20/10; G11B20/10527; H03G; H03G9/00; H03G9/02; H03G9/025; H04; H04B; H04B1/00; H04B1/66; H04B1/665
Claims Analysis
Total Claims: 130
Claim 1
Independent Claim
139 words
An apparatus for recording, reproducing, transmitting and/or receiving compressed data in which digital signals are separated into signal components of plural frequency bands to produce signal components in plural two-dimensional blocks along time and frequency, the signal components being quantized and compressed for each of the two-dimensional blocks along time and frequency so as to be recorded or transmitted along with information compressing parameters for each of the two-dimensional blocks along time and frequency, and/or in which the information-compressed signal components within each of the two-dimensional blocks along time and frequency are reproduced or received using the information compressing parameters for each of the two-dimensional blocks along time and frequency, the apparatus comprising: means for grouping, prior to at least one of recording, transmitting, reproducing and receiving, the information compressing parameters for at least two of said two-dimensional blocks.
Claim 2
Dependent Claim
27 words
The apparatus as claimed in claim 1 further comprising means for grouping the information compressing parameters of at least two two-dimensional blocks arrayed in the time domain.
Claim 3
Dependent Claim
28 words
The apparatus as claimed in claim 1 further comprising means for grouping together the information compressing parameters of at least two two-dimensional blocks arrayed in the frequency domain.
Claim 4
Dependent Claim
38 words
The apparatus as claimed in claim 2 or 3 further comprising means for grouping together the information compressing parameters of at least two two-dimensional blocks arrayed in at least one of the frequency domain and the time domain.
Claim 5
Dependent Claim
33 words
The apparatus as claimed in claim 2 further comprising means for grouping together the information compressing parameters of at least two two-dimensional blocks arrayed in and neighboring each other in the time domain.
Claim 6
Dependent Claim
33 words
The apparatus as claimed in claim 3 further comprising means for grouping together the information compressing parameters of at least two two-dimensional blocks arrayed in and neighboring each other in the frequency domain.
Claim 7
Dependent Claim
43 words
The apparatus as claimed in claim 5 or 6 further comprising means for grouping together the information compressing parameters of at least two two-dimensional blocks arrayed in and neighboring each other on at least one of the frequency domain and the time domain.
Claim 8
Independent Claim
145 words
An apparatus having modes for recording, reproducing, transmitting and/or receiving compressed data in which digital signals are separated into signal components of plural frequency bands to produce signal components in plural two-dimensional blocks along time and frequency, the signal components being quantized and compressed for each of the two-dimensional blocks along time and frequency so as to be recorded or transmitted along with information compressing parameters for each of the two-dimensional blocks along time and frequency, and/or in which the information-compressed signal components within each of the two-dimensional blocks along time and frequency are reproduced or received using the information compressing parameters for each of the two-dimensional blocks along time and frequency, the apparatus comprising: means for changing the number of plural information bit rates, with the number of the information compressing parameters being changed based upon an information bit rate for a selected mode.
Claim 9
Dependent Claim
29 words
The apparatus as claimed in claim 8 further comprising means for increasing the number of information-compressing parameters in response to a higher information bit rate for a selected mode.
Claim 10
Dependent Claim
29 words
The apparatus as claimed in claim 8 further comprising means for decreasing the number of information-compressing parameters in response to a lower information bit rate for a selected mode.
Claim 11
Dependent Claim
31 words
The apparatus as claimed in claim 9 or 10 further comprising means for changing the number of the information-compressing parameters in proportion to the information bit rates for the selected modes.
Claim 12
Dependent Claim
45 words
The apparatus as claimed in claim 11 further comprising means for grouping together information-compressing parameters of at least two two-dimensional blocks, arrayed in at least one of the time scale and the frequency scale to achieve a reduction in the number of the information-compressing parameters.
Claim 13
Dependent Claim
46 words
The apparatus as claimed in claim 11 further comprising means for grouping together information-compressing parameters of at least two neighboring two-dimensional blocks, arrayed in at least one of the time scale and the frequency scale to achieve a reduction in the number of the information-compressing parameters.
Claim 14
Dependent Claim
33 words
The apparatus as claimed in claim 12 or 13 further comprising means for grouping together the information compressing parameters which become larger in number for those modes having a lower information bit rate.
Claim 15
Dependent Claim
30 words
The apparatus as claimed in claim 14 further comprising means for grouping together the information compressing parameters which increase in inverse proportion to the information bit rate for each mode.
Claim 16
Dependent Claim
33 words
The apparatus as claimed in claim 15 further comprising means for producing at least one two-dimensional block which is at least one of a block-floating block and a quantization noise generation suppressing block.
Claim 17
Dependent Claim
40 words
The apparatus as claimed in claim 7 or 16 wherein input signals are audio signals, further comprising means for setting the frequency width of at least a majority of the quantization noise suppressing blocks to be broader towards higher frequencies.
Claim 18
Dependent Claim
21 words
The apparatus as claimed in claim 17 further comprising means for utilizing the same sampling frequency for all of the modes.
Claim 19
Dependent Claim
58 words
The apparatus as claimed in claim 7 or 16 further comprising orthogonal transform means for dividing the digital signals into plural frequency components to produce signal components in plural two-dimensional blocks along time and frequency, and inverse orthogonal transform means for converting signals in the two-dimensional blocks along time and frequency into digital signals in the time domain.
Claim 20
Dependent Claim
107 words
The apparatus as claimed in claim 19 further comprising means for dividing the digital signals into plural frequency components, the plural frequency components divided into plural bands to produce signal components in the two-dimensional blocks along time and frequency, orthogonally transforming for each band each block to produce coefficient data, and means for converting signals in the plural bands in the frequency domain into signals in the time domain by inverse orthogonally transforming, for each of the plural bands in the frequency domain, the signals in each the plural bands, and means for synthesizing such inverse orthogonally transformed signals to produce synthesized signals in the time domain.
Claim 21
Dependent Claim
30 words
The apparatus as claimed in claim 19 or 20 further comprising means for varying the block size of at least one of the orthogonal transform or the inverse orthogonal transform.
Claim 22
Dependent Claim
74 words
The apparatus as claimed in claim 20 or 21 further comprising means for selecting to be the same for two consecutive bands in the lowest frequency range at least one of the frequency width on division from time-domain signals prior to orthogonal transform into plural bands in the frequency domain and the frequency width on synthesis from plural bands in the frequency domain subsequent to inverse orthogonal transform into signals in the time domain.
Claim 23
Dependent Claim
56 words
The apparatus as claimed in claim 22 further comprising means for selecting to be broader towards higher frequencies frequency width of divisions for at least one of time-domain signals prior to orthogonal transform into plural bands in the frequency domain and synthsized time domain signals subsequent to inverse orthogonal transform into signals in the time domain.
Claim 24
Dependent Claim
29 words
The apparatus as claimed in claim 23 wherein the orthogonal transform is a modified discrete cosine transform and the inverse orthogonal transform is an inverse modified discrete cosine transform.
Claim 25
Dependent Claim
31 words
The apparatus as claimed in claim 23 wherein the means for selecting selects orthogonal transform block size to be the same among all of the modes having different information bit rates.
Claim 26
Dependent Claim
33 words
The apparatus as claimed in claim 25 further comprising means for converting compressed data between modes having different information bit rates, such conversion of effected on the signal components in the frequency domain.
Claim 27
Dependent Claim
46 words
The apparatus as claimed in claim 26 wherein the means for converting compressed data between modes, when mode-converting compressed data from a mode having a higher information bit rate to a mode having a lower information bit rate, converts the compressed data in the frequency domain.
Claim 28
Dependent Claim
44 words
The apparatus as claimed in claim 27 wherein the means for converting compressed data, when mode-converting compressed data from a mode having a lower information bit rate to a mode having a higher information bit rate, converts the compressed data on encoded compressed data.
Claim 29
Independent Claim
139 words
A method for recording, reproducing, transmitting and/or receiving compressed data in which digital signals are divided into signal components of plural frequency bands to produce signal components in plural two-dimensional blocks along time and frequency, the signal components being quantized and compressed for each of the two-dimensional blocks along time and frequency so as to be recorded or transmitted along with information compressing parameters for each of the two-dimensional blocks along time and frequency, and/or in which the information-compressed signal components within each of the two-dimensional blocks along time and frequency are reproduced or received using the information compressing parameters for each of the two-dimensional blocks along time and frequency, the method comprising the step of: grouping the information compressing parameters for at least two of said two-dimensional blocks for at least one of recording, transmitting, reproducing and receiving.
Claim 30
Dependent Claim
29 words
The method as claimed in claim 29 further comprising the step of grouping together the information compressing parameters of at least two two-dimensional blocks arrayed in the time domain.
Claim 31
Dependent Claim
29 words
The method as claimed in claim 29 further comprising the step of grouping together the information compressing parameters of at least two two-dimensional blocks arrayed in the frequency domain.
Claim 32
Dependent Claim
39 words
The method as claimed in claim 30 or 31 further comprising the step of grouping together the information compressing parameters of at least two two-dimensional blocks arrayed in at least one of the frequency domain and the time domain.
Claim 33
Dependent Claim
34 words
The method as claimed in claim 30 further comprising the step of grouping together the information compressing parameters of at least two two-dimensional blocks arrayed in and neighboring each other in the time domain.
Claim 34
Dependent Claim
34 words
The method as claimed in claim 31 further comprising the step of grouping together the information compressing parameters of at least two two-dimensional blocks arrayed in and neighboring each other in the frequency domain.
Claim 35
Dependent Claim
44 words
The method as claimed in claim 33 or 34 further comprising the step of grouping together the information compressing parameters of at least two two-dimensional blocks arrayed in and neighboring each other in at least one of the frequency domain and the time domain.
Claim 36
Independent Claim
147 words
A method for recording, reproducing, transmitting and/or receiving compressed data in which digital signals are divided into signal components of plural frequency bands to produce signal components in plural two-dimensional blocks along time and frequency, the signal components being quantized and compressed for each of the two-dimensional blocks along time and frequency so as to be recorded or transmitted along with information compressing parameters for each of the two-dimensional blocks along time and frequency, and/or in which the information-compressed signal components within each of the two-dimensional blocks along time and frequency are reproduced or received using the information compressing parameters for each of the two-dimensional blocks along time and frequency, the method comprising the step of: changing the number of the information compressing parameters based upon the information bit rates for a selected mode, the selected mode being at least one of recording, reproducing, transmitting and receiving.
Claim 37
Dependent Claim
31 words
The method as claimed in claim 36 further comprising the step of increasing the number of the information-compressing parameters in response to an increased information bit rate for a selected mode.
Claim 38
Dependent Claim
30 words
The method as claimed in claim 36 further comprising the step of decreasing the number of information-compressing parameters in response to a lower information bit rate for a selected mode.
Claim 39
Dependent Claim
34 words
The method as claimed in claim 37 or 38 further comprising the step of changing the number of the information-compressing parameters is changed in proportion to the information bit rates for each selected modes.
Claim 40
Dependent Claim
47 words
The method as claimed in claim 39 further comprising the step of grouping together information-compressing parameters of at least two two-dimensional blocks, arrayed in at least one of the time scale and the frequency scale to thereby achieve a reduction in the number of the information-compressing parameters.
Claim 41
Dependent Claim
48 words
The method as claimed in claim 39 further comprising the step of grouping together information-compressing parameters of at least two neighboring two-dimensional blocks, arrayed in at least one of the time scale and the frequency scale to thereby achieve a reduction in the number of the information-compressing parameters.
Claim 42
Dependent Claim
34 words
The method as claimed in claim 40 or 41 further comprising the step of grouping together the information compressing parameters which become larger in number for the mode having a lower information bit rate.
Claim 43
Dependent Claim
43 words
The method as claimed in claim 42 further comprising the step of grouping together the information compressing parameters which become larger in number for the mode having a lower information bit rate in inverse proportion to the information bit rate for such mode.
Claim 44
Dependent Claim
26 words
The method as claimed in claim 43 wherein the two-dimensional block is at least one of a block-floating block and a quantization noise generation suppressing block.
Claim 45
Dependent Claim
42 words
The method as claimed in claim 35 or 44, wherein input signals are audio signals, further comprising the step of setting the frequency width of at least the majority of the quantization noise generation suppressing blocks to be broader towards higher frequencies.
Claim 46
Dependent Claim
22 words
The method as claimed in claim 45 further comprising the step of using the same sampling frequency for all of the modes.
Claim 47
Dependent Claim
63 words
The method as claimed in claim 35 or 44 further comprising the steps of utilizing an orthogonal transform to divide the digital signals into plural frequency components for producing signal components in plural two-dimensional blocks along time and frequency, and utilizing an inverse orthogonal transform to convert signals in the two-dimensional blocks along time and frequency into digital signals in the time domain.
Claim 48
Dependent Claim
98 words
The method as claimed in claim 47 further comprising the steps of dividing the frequency range into plural bands, in each of which blocks are formed, each block composed of plural samples, orthogonally transforming each of the plural bands to produce coefficient data, to thereby produce signal components in the two-dimensional blocks along time and frequency, and converting signals in the plural bands in the frequency domain into signals in the time domain, by inverse orthogonally transforming signals within each of the plural bands and synthesizing the inverse orthogonally transformed signals to produce signals in the time domain.
Claim 49
Dependent Claim
34 words
The method as claimed in claim 47 or 48 further comprising the step of setting the block size of at least one of the orthogonal transform and the inverse orthogonal transform to be variable.
Claim 50
Dependent Claim
35 words
The method as claimed in claim 48 or 49 further comprising the step of selecting the frequency width of the plural bands to be the same for two consecutive bands in the lowest frequency range.
Claim 51
Dependent Claim
22 words
The method as claimed in claim 50 further comprising the step of selecting the frequency width to be broader towards higher frequencies.
Claim 52
Dependent Claim
33 words
The method as claimed in claim 51 wherein a modified discrete cosine transform is employed as the orthogonal transform and an inverse modified discrete cosine transform is employed as the inverse orthogonal transform.
Claim 53
Dependent Claim
33 words
The method as claimed in claim 51 further comprising the step of selecting the orthogonal transform block size to be the same among the all of the modes having different information bit rates.
Claim 54
Dependent Claim
35 words
The method as claimed in claim 53 wherein, when converting compressed data between modes having different information bit rates, such conversion of the compressed data is effected on the signal components in the frequency domain.
Claim 55
Dependent Claim
46 words
The method as claimed in claim 54 wherein, when mode-converting compressed data from a mode having a higher information bit rate to a mode having a lower information bit rate, the conversion of the compressed data is performed on the signal components in the frequency domain.
Claim 56
Dependent Claim
42 words
The method as claimed in claim 55 wherein, when mode-converting compressed data from a mode having a lower information bit rate to a mode having a higher information bit rate, the conversion of the compressed data is performed on encoded compressed data.
Claim 57
Dependent Claim
24 words
A recording medium having compressed data recorded thereon by the compressed data recording apparatus as claimed in any one of claims 1 to 28.
Claim 58
Dependent Claim
14 words
The recording medium as claimed in claim 57 comprising an optical disc recording medium.
Claim 59
Dependent Claim
13 words
The recording medium as claimed in claim 57 comprising a semiconductor recording medium.
Claim 60
Dependent Claim
13 words
The recording medium as claimed in claim 57 comprising an IC memory card.
Claim 61
Independent Claim
155 words
An apparatus for recording, reproducing, transmitting and/or receiving compressed data in which digital signals are divided into signal components of plural frequency bands to produce signal components in plural two-dimensional blocks along time and frequency, the signal components being quantized and compressed for each of the two-dimensional blocks along time and frequency, and in which information compressing parameters are set for each of two-dimensional blocks along time and frequency and at least two of the information compressing parameters are grouped together so as to be recorded or transmitted along with the compressed data, and/or in which the compressed signal components within each of the two-dimensional blocks along time and frequency are reproduced or received using the compressed data and the information compressing parameters, the apparatus comprising: means for changing the grouping of information compressing parameters based upon at least one of a plurality of modes of division into the two-dimensional blocks along time and frequency.
Claim 62
Dependent Claim
36 words
The apparatus as claimed in claim 61 wherein the means for changing the grouping changes the grouping of the information compressing parameters based upon the number of divisions into the two-dimensional blocks along the time scale.
Claim 63
Dependent Claim
36 words
The apparatus as claimed in claim 61 wherein the means for changing the grouping changes the grouping of the information compressing parameters based upon the number of divisions into the two-dimensional blocks along the frequency scale.
Claim 64
Dependent Claim
44 words
The apparatus as claimed in claim 61 wherein the means for changing the grouping of information compressing parameters changes the grouping of the information compressing parameters based upon the number of divisions into the two-dimensional blocks along the frequency scale and the time scale.
Claim 65
Dependent Claim
55 words
The apparatus as claimed in claim 62, 63 or 64 wherein the means for changing the grouping of information compressing parameters, if the number of divisions into the two-dimensional blocks along the time scale is a plural number, groups the information compressing parameters of a plurality of the two-dimensional blocks arrayed along the time scale.
Claim 66
Dependent Claim
40 words
The apparatus as claimed in claim 65 wherein the means for changing the grouping of information compressing parameters, groups the information compressing parameters of a plurality of the two-dimensional blocks arrayed along the time scale in adjacency to each other.
Claim 67
Dependent Claim
44 words
The apparatus as claimed in claim 66 wherein means for changing the grouping of information compressing parameters groups the information compressing parameters of a plurality of the two-dimensional blocks arrayed along the time scale and along the frequency scale in adjacency to each other.
Claim 68
Dependent Claim
73 words
The apparatus as claimed in claim 62, 63, or 64 wherein the means for changing the grouping of information compressing parameters, if the number of divisions into the two-dimensional blocks along at least one of the time scale and the frequency scale is a plural number, groups the information compressing parameters of a plurality of the two-dimensional blocks arrayed along the time scale and along the frequency scale in adjacency to each other.
Claim 69
Dependent Claim
53 words
The apparatus as claimed in claim 62, 63 or 64 wherein the means for changing the grouping of information compressing parameters, if the number of divisions into the two-dimensional blocks along the time scale is zero, groups the information compressing parameters of a plurality of the two-dimensional blocks arrayed along the time scale.
Claim 70
Dependent Claim
32 words
The apparatus as claimed in claim 69 further comprising means for grouping the information compressing parameters of a plurality of the two-dimensional blocks arrayed adjacent to each other along the frequency scale.
Claim 71
Dependent Claim
55 words
The apparatus as claimed in claim 62, 63 or 64 wherein, if the two-dimensional blocks along time and frequency are formed only by division along the frequency domain, the means for changing the grouping of information compressing parameters groups the information compressing parameters of a plurality of the two-dimensional blocks arrayed along the frequency scale.
Claim 72
Dependent Claim
38 words
The apparatus as claimed in claim 71 wherein the means for changing the grouping of information compressing parameters groups information compressing parameters of a plurality of the two-dimensional blocks arrayed adjacent to each other along the frequency scale.
Claim 73
Independent Claim
212 words
An apparatus for recording, reproducing, transmitting and/or receiving compressed data in which digital signals are divided into signal components of plural frequency bands to produce signal components in plural two-dimensional blocks along time and frequency, the signal components being quantized and compressed for each of the two-dimensional blocks along time and frequency, and in which information compressing parameters are set for each of two-dimensional blocks along time and frequency and at least two of the information compressing parameters are grouped together so as to be recorded or transmitted along with the compressed data, there being plural recording and/or transmitting modes with plural different information bit rates, with the number of the information compressing parameters grouped together being the more the lower the information bit rate of the recording and/or transmitting mode, and/or in which the compressed signal components within each of the two-dimensional blocks along time and frequency are reproduced or received using the compressed data and the information compressing parameters, there being plural reproducing and/or receiving modes with plural different information bit rates, the apparatus comprising: means for changmg the grouping the information compressing parameters based upon at least one of a plurality of modes of division into two-dimensional blocks for at least on mode of recording, transmitting, reproducing and receiving.
Claim 74
Dependent Claim
35 words
The apparatus as claimed in claim 73 wherein the means for changing the grouping the information compressing parameters changes the grouping based upon the number of divisions into the two-dimensional blocks along the time scale.
Claim 75
Dependent Claim
35 words
The apparatus as claimed in claim 73 wherein the means for changing the grouping the information compressing parameters changes the grouping based upon the number of divisions into the two-dimensional blocks along the frequency scale.
Claim 76
Dependent Claim
39 words
The apparatus as claimed in claim 73 wherein the means for changing the grouping the information compressing parameters changes the grouping based upon the number of divisions into the two-dimensional blocks along the frequency scale and the time scale.
Claim 77
Dependent Claim
55 words
The apparatus as claimed in claim 74, 75 and 76 wherein the means for changing the grouping the information compressing parameters, if the number of divisions into the two-dimensional blocks along the time scale is a plural number, groups the information compressing parameters of a plurality of the two-dimensional blocks arrayed along the time scale.
Claim 78
Dependent Claim
33 words
The apparatus as claimed in claim 77 wherein the means for changing the grouping the information compressing parameters groups a plurality of the two-dimensional blocks arrayed adjacent to each along the time scale.
Claim 79
Dependent Claim
38 words
The apparatus as claimed in claim 78 wherein the means for changing the grouping information compressing parameters groups the information compressing parameters of a plurality of the two-dimensional blocks arrayed adjacent to each other along the time scale.
Claim 80
Dependent Claim
68 words
The apparatus as claimed in claim 74, 75 or 76 wherein the means for changing the grouping of information compressing parameters, if the number of divisions into the two-dimensional blocks along the time scale and/or the frequency scale is a plural number, groups the information compressing parameters of a plurality of the two-dimensional blocks arrayed adjacent to each other along the time scale and along the frequency scale.
Claim 81
Dependent Claim
53 words
The apparatus as claimed in claim 74, 75 or 76 wherein the means for changing the grouping of information compressing parameters, if the number of divisions into the two-dimensional blocks along the time scale is zero, groups the information compressing parameters of a plurality of the two-dimensional blocks arrayed along the frequency scale.
Claim 82
Dependent Claim
38 words
The apparatus as claimed in claim 81 wherein the means for changing the grouping of information compressing parameters groups information compressing parameters of a plurality of the two-dimensional blocks arrayed adjacent to each other along the frequency scale.
Claim 83
Dependent Claim
55 words
The apparatus as claimed in claim 74, 75 or 76 wherein the means for changing the grouping of information compressing parameters, if the two-dimensional blocks along time and frequency are constituted only by division along the frequency domain, groups the information compressing parameters of a plurality of the two-dimensional blocks arrayed along the frequency scale.
Claim 84
Dependent Claim
48 words
The apparatus as claimed in claim 83 wherein the means for changing the grouping of information compressing parameters groups information compressing parameters of a plurality of the two-dimensional blocks arrayed adjacent to each other along the frequency scale are grouped and recorded or transmitted and reproduced or received.
Claim 85
Dependent Claim
46 words
The apparatus as claimed in claim 67, 68, 70, 72, 79, 80, 82 or 85 wherein input signals are audio signals, further comprising means for selecting the frequency width of at least a majority of quantization noise suppression control blocks to be broader towards higher frequencies.
Claim 86
Dependent Claim
33 words
The apparatus as claimed in claim 85 wherein the two-dimensional blocks along time and frequency are at least one of blocks for block floating and blocks for controlling the generation of quantization noise.
Claim 87
Dependent Claim
19 words
The apparatus as claimed in claim 86 wherein the same sampling frequency is used for all of the modes.
Claim 88
Dependent Claim
64 words
The apparatus as claimed in claim 67, 68, 70, 72, 79, 80, 82 or 85 further comprising orthogonal transform means for dividing the digital signals into plural frequency components to produce signal components in plural two-dimensional blocks along time and frequency, and inverse orthogonal transform means for converting signals in the two-dimensional blocks along time and frequency into digital signals in the time domain.
Claim 89
Dependent Claim
105 words
The apparatus as claimed in claim 88 further comprising means for dividing the digital signals into plural frequency components to produce signal components in the two-dimensional blocks along time and frequency, the frequency range is divided into plural bands, in each of which blocks each composed of plural samples are formed and means for orthogonally transforming each band to produce coefficient data, and means for converting signals in the plural bands in the frequency domain into signals in the time domain by inverse orthogonally transforming each band, and means for synthesizing the signals in the time domain to produce synthesized signals in the time domain.
Claim 90
Dependent Claim
30 words
The apparatus as claimed in claim 88 or 89 further comprising means for varying the block size of at least one of the orthogonal transform and the inverse orthogonal transform.
Claim 91
Dependent Claim
66 words
The apparatus as claimed in claim 89 or 90 further comprising means for selecting the frequency width of divided plural bands to be the same for two consecutive bands in the lowest frequency range for at least one of the time-domain signals prior to orthogonal transformation into plural bands in the frequency domain and the synthesized signals subsequent to inverse orthogonal transformation of such synthesized signals.
Claim 92
Dependent Claim
23 words
The apparatus as claimed in claim 91 further comprising means for selecting the frequency width of division to be broader toward higher frequencies.
Claim 93
Dependent Claim
30 words
The apparatus as claimed in claim 92 wherein the orthogonal transform is a modified discrete cosine transform and wherein the inverse orthogonal transform is an inverse modified discrete cosine transform.
Claim 94
Independent Claim
173 words
A method for recording, reproducing, transmitting and/or receiving compressed data in which digital signals are divided into signal components of plural frequency bands to produce signal components in plural two-dimensional blocks along time and frequency, the signal components being quantized and compressed for each of the two-dimensional blocks along time and frequency, and in which information compressing parameters are set for each of two-dimensional blocks along time and frequency and at least two of the information compressing parameters are grouped together so as to be recorded or transmitted along with the compressed data, and/or in which the compressed signal components within each of the two-dimensional blocks along time and frequency are reproduced or received using the compressed data and the information compressing parameters, the method comprising the step of: changing the grouping of information compressing parameters of the two-dimensional blocks along time and frequency based upon a selection of at least one of a plurality of modes of division into the two-dimensional blocks for at least one of recording, transmitting, reproducing and receiving.
Claim 95
Dependent Claim
34 words
The method as claimed in claim 94 wherein the step of changing the grouping of information compression parameters is based upon on the number of divisions into the two-dimensional blocks along the time scale.
Claim 96
Dependent Claim
33 words
The method as claimed in claim 94 wherein the manner of grouping the information compressing parameters is changed based upon on the number of divisions into the two-dimensional blocks along the frequency scale.
Claim 97
Dependent Claim
36 words
The method as claimed in claim 94 wherein the manner of grouping the information compressing parameters is changed based upon the number of divisions into the two-dimensional blocks along the frequency scale and the time scale.
Claim 98
Dependent Claim
46 words
The method as claimed in claim 95, 96 or 97 wherein, if the number of divisions into the two-dimensional blocks along the time scale is a plural number, the information compressing parameters of a plurality of the two-dimensional blocks arrayed along the time scale are grouped.
Claim 99
Dependent Claim
33 words
The method as claimed in claim 98 wherein the information compressing parameters of a plurality of the two-dimensional blocks arrayed adjacent to each other along the time scale in adjacency to each other.
Claim 100
Dependent Claim
35 words
The method as claimed in claim 99 wherein the information compressing parameters of a plurality of the two-dimensional blocks arrayed adjacent to each other along the time scale and along the frequency scale are grouped.
Claim 101
Dependent Claim
59 words
The method as claimed in claim 95, 96 or 97 wherein, if the number of divisions into the two-dimensional blocks along the time scale and/or the frequency scale is a plural number, the information compressing parameters of a plurality of the two-dimensional blocks arrayed adjacent to each other along the time scale and along the frequency scale are grouped.
Claim 102
Dependent Claim
44 words
The method as claimed in claim 95, 96 or 97 wherein, if the number of divisions into the two-dimensional blocks along the time scale is zero, the information compressing parameters of a plurality of the two-dimensional blocks arrayed along the time scale are grouped.
Claim 103
Dependent Claim
30 words
The method as claimed in claim 102 wherein the information compressing parameters of a plurality of the two-dimensional blocks arrayed adjacent to each other along the frequency scale are grouped.
Claim 104
Dependent Claim
46 words
The method as claimed in claim 95, 96 or 97 wherein, if the two-dimensional blocks along time and frequency are formed only by division along the frequency domain, the information compressing parameters of a plurality of the two-dimensional blocks arrayed along the frequency scale are grouped.
Claim 105
Dependent Claim
30 words
The method as claimed in claim 104 wherein the information compressing parameters of a plurality of the two-dimensional blocks arrayed adjacent to each other along the frequency scale are grouped.
Claim 106
Independent Claim
214 words
A method for recording, reproducing, transmitting and/or receiving compressed data in which digital signals are divided into signal components of plural frequency bands to produce signal components in plural two-dimensional blocks along time and frequency, the signal components being quantized and compressed for each of the two-dimensional blocks along time and frequency, and in which information compressing parameters are set for each of two-dimensional blocks along time and frequency and at least two of the information compressing parameters are grouped together so as to be recorded or transmitted along with the compressed data, there being plural recording and/or transmitting modes with plural different information bit rates, with the number of the information compressing parameters grouped together being the more the lower the information bit rate of the recording and/or transmitting mode, and/or in which the compressed signal components within each of the two-dimensional blocks along time and frequency are reproduced or received using the compressed data and the information compressing parameters, there being plural reproducing and/or receiving modes with plural different information bit rates, the method comprising the step of: changing the manner of grouping the information compressing parameters based upon a selected mode of division into the two-dimensional blocks, there being plural modes of division into the two-dimensional blocks along time and frequency.
Claim 107
Dependent Claim
32 words
The method as claimed in claim 106 wherein the manner of grouping the information compressing parameters is changed depending on the number of divisions into the two-dimensional blocks along the time scale.
Claim 108
Dependent Claim
32 words
The method as claimed in claim 106 wherein the manner of grouping the information compressing parameters is changed depending on the number of divisions into the two-dimensional blocks along the frequency scale.
Claim 109
Dependent Claim
36 words
The method as claimed in claim 106 wherein the manner of grouping the information compressing parameters is changed depending on the number of divisions into the two-dimensional blocks along the frequency scale and the time scale.
Claim 110
Dependent Claim
57 words
The method as claimed in claim 107, 108 or 109 wherein, if the number of divisions into the two-dimensional blocks along the time scale is a plural number, the information compressing parameters of a plurality of the two-dimensional blocks arrayed along the time scale are grouped and at least one of recorded, transmitted and reproduced and received.
Claim 111
Dependent Claim
40 words
The method as claimed in claim 110 wherein the information compressing parameters of a plurality of the two-dimensional blocks arrayed adjacent to each other along the time scale are grouped and at least one of recorded, transmitted, reproduced and received.
Claim 112
Dependent Claim
48 words
The method as claimed in claim 111 wherein the information compressing parameters of a plurality of the two-dimensional blocks arrayed adjacent to each other along the time scale and along the frequency scale to each other are grouped and at least one of recorded, transmitted, reproduced and received.
Claim 113
Dependent Claim
69 words
The method as claimed in claim 107, 108 or 109 wherein, if the number of divisions into the two-dimensional blocks along the time scale and/or the frequency scale is a plural number, the information compressing parameters of a plurality of the two-dimensional blocks arrayed adjacent to each other along the time scale and along the frequency scale are grouped and at least one of recorded, transmitted, reproduced and received.
Claim 114
Dependent Claim
54 words
The method as claimed in claim 107, 108 or 109 wherein, if the number of divisions into the two-dimensional blocks along the time scale is zero, the information compressing parameters of a plurality of the two-dimensional blocks arrayed along the frequency scale are grouped and at least one of recorded, transmitted, reproduced and received.
Claim 115
Dependent Claim
40 words
The method as claimed in claim 114 wherein the information compressing parameters of a plurality of the two-dimensional blocks arrayed adjacent to each other along the frequency scale are grouped and at least one of recorded, transmitted, reproduced and received.
Claim 116
Dependent Claim
56 words
The method as claimed in claim 107, 108 or 109 wherein, if the two-dimensional blocks along time and frequency are formed only by division along the frequency domain, the information compressing parameters of a plurality of the two-dimensional blocks arrayed along the frequency scale are grouped and at least one of recorded, transmitted, reproduced and received.
Claim 117
Dependent Claim
40 words
The method as claimed in claim 116 wherein the information compressing parameters of a plurality of the two-dimensional blocks arrayed adjacent to each other along the frequency scale are grouped and at least one of recorded, transmitted, reproduced and received.
Claim 118
Dependent Claim
44 words
The method as claimed in claim 67, 68, 103, 105, 112, 113, 115 or 118 wherein input signals are audio signals and the frequency width of at least a majority of quantization noise generation control blocks is selected to be broader towards higher frequencies.
Claim 119
Dependent Claim
29 words
The method as claimed in claim 118 wherein the two-dimensional blocks along time and frequency are blocks for block floating and/or blocks for controlling the generation of quantization noise.
Claim 120
Dependent Claim
19 words
The method as claimed in claim 119 wherein the same sampling frequency is used for all of the modes.
Claim 121
Dependent Claim
68 words
The method as claimed in claim 67, 68, 103, 105, 112, 113, 115 or 118 wherein an orthogonal transform is employed for dividing the digital signals into plural frequency components for producing signal components in plural two-dimensional blocks along time and frequency, and wherein an inverse orthogonal transform is employed for converting signals in the two-dimensional blocks along time and frequency into digital signals in the time domain.
Claim 122
Dependent Claim
105 words
The method as claimed in claim 121 wherein, for dividing the digital signals into plural frequency components for producing signal components in the two-dimensional blocks along time and frequency, the frequency range is divided into plural bands, in each of which blocks each composed of plural samples are formed and orthogonal transform is executed for each band to produce coefficient data, and wherein, for converting signals in the plural bands in the frequency domain into signals in the time domain, an inverse orthogonal transform is executed for each band and respective inverse orthogonal transformed outputs are synthesized to produce synthesized signals in the time domain.
Claim 123
Dependent Claim
29 words
The method as claimed in claim 121 or 122 wherein the block size of the orthogonal transform or the inverse orthogonal transform is set so as to be variable.
Claim 124
Dependent Claim
72 words
The method as claimed in claim 122 or 123 wherein the frequency width for divisions of at least one of time-domain signals prior to orthogonal transform into plural bands in the frequency domain and the signals generated from synthesis from plural bands in the frequency domain subsequent to inverse orthogonal transform into signals in the time domain is selected to be the same for two consecutive bands in the lowest frequency range.
Claim 125
Dependent Claim
61 words
The method as claimed in claim 124 wherein the frequency width for divisions of one of time-domain signals prior to orthogonal transform into plural bands in the frequency domain and signals generated from synthesis from plural bands in the frequency domain subsequent to inverse orthogonal transform into signals in the time domain is selected to be broader substantially towards higher frequencies.
Claim 126
Dependent Claim
28 words
The method as claimed in claim 125 wherein modified discrete cosine transform and inverse modified discrete cosine transform are utilized for orthogonal transform and inverse orthogonal transform, respectively.
Claim 127
Dependent Claim
18 words
A recording medium having recorded thereon the compressed data according to claim 61, 73, 88, 89 or 93.
Claim 128
Dependent Claim
15 words
An optical disc recording medium having the compressed data recorded thereon according to claim 127.
Claim 129
Dependent Claim
14 words
A semiconductor recording medium having the compressed data recorded thereon according to claim 127.
Claim 130
Dependent Claim
16 words
An IC memory card recording medium having the compressed data recorded thereon according to claim 127.
References Cited (Backward Citations)
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