EP0461649A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Recording and reproducing method and apparatus
Assignee: Sony Group Corp
•
Filing: 1991-06-13
•
Granted: —
•
Expires: 2011-06-13
Abstract
Abstract A method of simultaneously recording and reproducing a digital audio signal and a digital video signal for a dynamic picture. A digital signal is recorded and reproduced in N bits (N: integer), and an image area, an audio area and a control area are formed by part of the N bits. Compressed digital video signals for multiple screens forming a dynamic picture are allocated in the image area in each compression reference period. A digital audio signal in each compression reference period is allocated in the audio area in the compression reference period. Data, such as compression information, which concerns a digital signal to be allocated in the image area or audio area, is allocated in the control area. As a digital video signal carrying a vast amount of information is recorded in a compressed manner, and the compression information is recorded at the same time, recording and reproducing the digital video signal for a dynamic picture can be executed without problems.
Inventors
- 👤 Takao Ing. Mogi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 17:40
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/00007; G11B27/00; G11B27/02; G11B27/031; G11B27/10; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B27/3036; H; H04; H04N; H04N9/00; H04N9/79; H04N9/80; H04N9/804; H04N9/8042; H04N9/8045; H04N9/808; H04N9/8085; H04N9/8087; H04N9/8088; H04N9/87; G11B2220/00; G11B2220/90; G11B2220/91; G11B2220/913; H04N5/00; H04N5/76; H04N5/78; H04N5/782; H04N5/783
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
86 words
A method of recording and reproducing a digital signal, comprising the steps of: recording and reproducing a digital signal consisting of N bits (N: integer); forming an image area, an audio area and a control area by part of said N bits; and allocating compressed digital video signals for multiple screens forming a dynamic picture in said image area in each of a compression reference period, and allocating a digital audio signal in each compression reference period in said audio area within said compression reference period.
Claim 2
Dependent Claim
47 words
A method according to claim 1, wherein said digital video signal is allocated in said image area in said each compression reference period in such a manner that reference image data for one screen is allocated first, then difference compressed image data for multiple screens are allocated.
Claim 3
Independent Claim
107 words
A method of recording and reproducing a digital signal, comprising the steps of: recording and reproducing a digital signal consisting of N bits (N: integer); forming an image area, an audio area and a control area by part of said N bits; allocating compressed digital video signals for multiple screens forming a dynamic picture in said image area in each of a compression reference period, and allocating a digital audio signal in each compression reference period within said audio area in said compression reference period; and allocating data about a digital signal to be allocated in said image area or said audio area, in said control area.
Claim 4
Dependent Claim
43 words
A method according to claim 3, wherein compressed information of said digital video signal is allocated as said data about said digital signal, and expansion of said digital video signal is executed in accordance with said compressed information at a time of reproduction.
Claim 5
Dependent Claim
49 words
A method according to claim 3, wherein mode information of said digital video signal or digital audio signal is allocated as said data about said digital signal, and an operation of a signal reproducing processing system is controlled in accordance with said mode information at a time of reproduction.
Claim 6
Independent Claim
117 words
A method of recording and reproducing a digital signal, comprising the steps of: recording and reproducing a digital signal consisting of N bits (N: integer); forming an image area, an audio area and a control area by part of said N bits; allocating compressed digital video signals for multiple screens forming a dynamic picture in said image area in each compression reference period, and allocating a digital audio signal in each of a compression reference period in said audio area within said compression reference period; and allocating, in said control area in each compression reference period, data about a digital signal to be allocated in said image areas or said audio areas in following compression reference periods.
Claim 7
Dependent Claim
30 words
A method according to claim 6, wherein as said data about said digital signal, multiple pieces of the same data are allocated at predetermined intervals in one compression reference period.
Claim 8
Independent Claim
147 words
A method of recording and reproducing a digital signal, comprising the steps of: recording and reproducing a digital signal consisting of N bits (N: integer); forming an image area, an audio area and a control area by part of said N bits; allocating compressed digital video signals for multiple screens forming a dynamic picture in said image area in each of a compression reference period, and allocating a digital audio signal in each compression reference period in said audio area within said compression reference period; allocating said digital video signal in said image area in said each compression reference period in such a manner that reference image data for one screen is allocated first, then difference compressed image data for multiple screens are allocated; and resetting recorded signal processing to start a new compression reference period when a scene change is detected by scene change detecting means.
Claim 9
Dependent Claim
37 words
A method according to claim 8, wherein when said scene change occurs, data indicating presence of said scene change is allocated in that compression reference period of said control area which lies immediately before said scene change.
Claim 10
Independent Claim
115 words
A method of recording and reproducing a digital signal, comprising the steps of: recording and reproducing a digital signal consisting of N bits (N: integer); forming an image area, an audio area and a control area by part of said N bits; allocating compressed digital video signals for multiple screens forming a dynamic picture in said image area in each of a compression reference period, and allocating a digital audio signal in each compression reference period in said audio area within said compression reference period; and executing recorded signal processing and reproduced signal processing for said digital video signal and digital audio signal at the same timing with said compression reference period as a unit.
Claim 11
Independent Claim
112 words
An apparatus of recording and reproducing a digital signal consisting of N bits (N: integer), with an image area, an audio area and a control area formed by part of said N bits, compressed digital video signals for multiple screens forming a dynamic picture being allocated in said image area in each of a compression reference period, and a digital audio signal allocated in each compression reference period in said audio area within said compression reference period, said apparatus comprising: means for performing an expansion process for said compressed digital video signal separated from said image area of a reproduced signal; and means for repeatedly outputting expanded image data for one screen.
Claim 12
Dependent Claim
30 words
An apparatus according to claim 11, wherein expansion of said image data and repetitive outputting of said expanded image data for one screen are sequentially executed through a manual operation.
Claim 13
Dependent Claim
28 words
An apparatus according to claim 11, wherein expansion of said image data and repetitive outputting of said expanded image data for one screen are automatically executed in order.
Claim 14
Independent Claim
149 words
An apparatus of recording and reproducing a digital signal consisting of N bits (N: integer), with an image area, an audio area and a control area formed by part of said N bits, compressed digital video signals for multiple screens forming a dynamic picture being allocated in said image area in each compression reference period, and a digital audio signal allocated in each compression reference period in said audio area within said compression reference period, said digital video signal being allocated in said image area in said each compression reference period in such a manner that reference image data for one screen is allocated first, then difference compressed image data for multiple screens are allocated, said apparatus comprising: means for performing an expansion process for reference image data in said image area in said each compression reference period; and means for repeatedly outputting expanded image data for one screen.
Claim 15
Dependent Claim
30 words
An apparatus according to claim 14, wherein expansion of said image data and repetitive outputting of said expanded image data for one screen are sequentially executed through a manual operation.
Claim 16
Dependent Claim
28 words
An apparatus according to claim 14, wherein expansion of said image data and repetitive outputting of said expanded image data for one screen are automatically executed in order.
Claim 17
Independent Claim
195 words
An apparatus of recording and reproducing a digital signal consisting of N bits (N: integer), with an image area, an audio area and a control area formed by part of said N bits, compressed digital video signals for multiple screens forming a dynamic picture being allocated in said image area in each of a compression reference period, a digital audio signal allocated in each compression reference period in said audio area within said compression reference period, said digital video signal being allocated in said image area in said each compression reference period in such a manner that reference image data for one screen is allocated first, then difference compressed image data for multiple screens are allocated, and data indicating presence of a scene change in that compression reference period which lies immediately before said scene change being allocated in said control area, said apparatus comprising: means for performing an expansion process for reference image data in said image area in said each compression reference period after said scene change based on said data indicating presence of said scene change allocated in said control area; and means for repeatedly outputting expanded image data for one screen.
Claim 18
Dependent Claim
30 words
An apparatus according to claim 17, wherein expansion of said image data and repetitive outputting of said expanded image data for one screen are sequentially executed through a manual operation.
Claim 19
Dependent Claim
28 words
An apparatus according to claim 17, wherein expansion of said image data and repetitive outputting of said expanded image data for one screen are automatically executed in order.
Claim 20
Independent Claim
133 words
An apparatus of recording and reproducing a digital signal consisting of N bits (N: integer), with an image area, an audio area and a control area formed by part of said N bits, compressed digital video signals for multiple screens forming a dynamic picture being allocated in said image area in each of a compression reference period, and a digital audio signal allocated in each compression reference period in said audio area within said compression reference period, said apparatus comprising: means for performing an expansion process for compressed digital video signals for multiple screens separated from said image area in said each compression reference period of a reproduced signal; and means for repeatedly outputting expanded image data for one screen every predetermined screens until next compressed image data for one screen is acquired.
Claim 21
Independent Claim
140 words
A method of recording and reproducing a digital signal, comprising the steps of: recording and reproducing a digital signal consisting of N bits (N: integer); forming an image area, an audio area and a control area by part of said N bits; allocating compressed digital video signals for multiple screens forming a dynamic picture in said image area in each of a compression reference period, and allocating a digital audio signal in each compression reference period in said audio area within said compression reference period; and allocating, in said control area in each compression reference period, first data concerning a digital video signal to be allocated in the image areas in an immediately subsequent compression reference period, and allocating second data concerning a digital video signal to be allocated in said image area in an immediately preceding compression reference period.
Claim 22
Independent Claim
214 words
An apparatus of recording and reproducing a digital signal consisting of N bits (N: integer), with an image area, an audio area and a control area formed by part of said N bits, compressed digital video signals for multiple screens forming a dynamic picture being allocated in said image area in each of a compression reference period, a digital audio signal allocated in each compression reference period in said audio area within said compression reference period, and first data and second data allocated in said control area in each compression reference period, said first data concerning a digital video signal to be allocated in the image areas in an immediately subsequent compression reference period, said second data concerning a digital video signal to be allocated in said image area in an immediately preceding compression reference period said apparatus comprising: data detecting means for detecting said first and second data from said control area in said each compression reference period of a reproduced signal, whereby in normal reproduction mode and reverse reproduction mode, compressed digital video signals for said multiple screens separated from said image area in said each compression reference period of said reproduced signal is subjected to signal reproduction process based on said first and second data detected by said data detecting means.
Claim 23
Dependent Claim
89 words
An apparatus according to claim 22, wherein a signal reproducing system for said digital video signal has a memory for storing said compressed digital video signals for said multiple screens separated from said image area in said each compression reference period of said reproduced signal, and writing access to said memory is controlled based on said first and second data so that said compressed digital video signals for said multiple screens are stored at the same addresses in said reverse reproduction mode as done in said normal reproduction mode.
Claim 24
Independent Claim
57 words
A method of recording and reproducing a digital signal, comprising the steps of: recording and reproducing a digital signal consisting of N bits (N: integer); forming an image area, an audio area and a control area by part of said N bits; and allocating a time code in said control area in said each compression reference period.
Claim 25
Independent Claim
133 words
An apparatus of recording and reproducing a digital signal consisting of N bits (N: integer), with an image area, an audio area and a control area formed by part of said N bits, compressed digital video signals for multiple screens forming a dynamic picture being allocated in said image area in each of a compression reference period, and a digital audio signal allocated in each compression reference period in said audio area in within said compression reference period, said apparatus comprising: means for alternately executing reproduction at a normal speed and reproduction at a predetermined fast speed; means for performing an expansion process for said compressed digital video signal separated from said image area of a signal reproduced at said normal speed; and means for repeatedly outputting expanded image data for one screen.
Claim 26
Independent Claim
171 words
An apparatus of recording and reproducing a digital signal consisting of N bits (N: integer), with an image area, an audio area and a control area formed by part of said N bits, compressed digital video signals for multiple screens forming a dynamic picture being allocated in said image area in each of a compression reference period, and a digital audio signal allocated in each compression reference period in said audio area within said compression reference period, said digital video signal being allocated in said image area in said each compression reference period in such a manner that reference image data for one screen is allocated first, then difference compressed image data for multiple screens are allocated, said apparatus comprising: means for alternately executing reproduction at a normal speed and reproduction at a predetermined fast speed; means for performing an expansion process for said reference image data separated from said image area of a signal reproduced at said normal speed; and means for repeatedly outputting expanded image data for one screen.
Claim 27
Independent Claim
160 words
A method of recording and reproducing a digital signal, comprising the steps of: recording and reproducing a digital signal consisting of N bits (N: integer); forming an image area, an audio area and a control area by part of said N bits; allocating compressed digital video signals for multiple screens forming a dynamic picture in said image area in each of a compression reference period, and allocating a digital audio signal in each compression reference period in said audio area within said compression reference period; allocating said digital video signal in said image area in said each compression reference period in such a manner that reference image data for one screen is allocated first, then difference compressed image data for multiple screens are allocated; changing that area where said difference compressed image data for said multiple screens are allocated in accordance with the amount of said data, and allocating data indicating a change in said area in said control area.
Claim 28
Dependent Claim
118 words
A method according to claim 27, wherein multiple block areas are provided in said image area in said each compression reference period, each of those of said difference compressed image data for said multiple screens whose amounts each fit in one block area is allocated in an associated one block area, each of those of said difference compressed image data for said multiple screens whose amounts each do not fit in one block area is allocated in two or more block areas, and data for identifying that difference compressed image data for one screen which uses said two or more block areas and data representing a number of block areas in use are allocated in said control area.
Claim 29
Dependent Claim
116 words
A method according to claim 27, wherein there is a memory for storing said reference image data to be separated from said image area in said each compression reference period of a reproduced signal, and difference compressed image data for multiple screens, said difference compressed image data for said multiple screens are allocated in said image area in said each compression reference period, with an area corresponding to the amount of said data secured therein, and data about write addresses of said difference compressed image data for said multiple screens in said image area with respect to said memory are allocated in said control area in association with allocated positions of said difference compressed image data.
Claim 30
Independent Claim
165 words
An apparatus of recording and reproducing a digital signal consisting of N bits (N: integer), with an image area, an audio area and a control area formed by part of said N bits, compressed digital video signals for multiple screens forming a dynamic picture being allocated in said image area in each of a compression reference period, and a digital audio signal allocated in each compression reference period in said audio area within said compression reference period, said apparatus comprising: means for alternately repeating a normal reproduction involving a predetermined number of compression reference periods and a play pause mode in M times said predetermined number of compression reference periods (M: an integer equal to or greater than 1); means for performing an expansion process for said compressed digital video signal to be separated from said image area of a signal to be reproduced in said normal reproduction mode; and means for repeatedly outputting expanded image data for each screen by (M + 1) times.
Claim 31
Dependent Claim
157 words
A dubbing apparatus of reproducing, from one recording medium, a digital signal consisting of N bits (N: integer), with an image area, an audio area and a control area formed by part of said N bits, compressed digital video signals for multiple screens forming a dynamic picture being allocated in said image area in each of a compression reference period, and a digital audio signal allocated in each compression reference period in said audio area within said compression reference period, multiple types of sync codes allocated at predetermined intervals in said control area in said each compression reference period, and recording said signals on another recording medium, said dubbing apparatus comprising: detecting means for detecting said sync codes from said control area of a signal to be reproduced from said one recording medium; and control means for controlling a period for recording on said another recording medium based on said sync codes detected by said detecting means.
Claim 32
Dependent Claim
152 words
A dubbing apparatus of reproducing, from one recording medium, a digital signal consisting of N bits (N: integer), with an image area, an audio area and a control area formed by part of said N bits, compressed digital video signals for multiple screens forming a dynamic picture being allocated in said image area in each of a compression reference period, and a digital audio signal allocated in each compression reference period in said audio area within said compression reference period, a time code allocated in said control area in said each compression reference period, and recording said signals on another recording medium, said dubbing apparatus comprising: detecting means for detecting said time code from said control area of a signal to be reproduced from said one recording medium; and control means for controlling a period for recording on said another recording medium based on said time code detected by said detecting means
Claim 33
Independent Claim
100 words
A method of recording and reproducing a digital signal, comprising the steps of: recording and reproducing a digital signal consisting of N bits (N: integer); forming an image area, an audio area and a control area by part of said N bits; selectively forming a dynamic picture area and a still picture area in said image area; sequentially allocating compressed digital video signals for multiple screens constituting a dynamic picture as one unit in said dynamic picture area; and sequentially allocating a digital video signal for one screen constituting a still picture as one unit in said still picture area.
Claim 34
Dependent Claim
29 words
A method according to claim 33, wherein data for identifying said dynamic picture area and said still picture area in said image area is allocated in said control area.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.