Patent EP0464698A1 successfully refreshed from Google Patents.
EP0464698A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method of recording digital signals
Assignee: Panasonic Holdings Corp
•
Filing: 1991-06-28
•
Granted: —
•
Expires: 2011-06-28
Abstract
Abstract In a method of recording digital signals, in which all audio signals of N channels (N=integer) are recorded on M tracks (M=integer > N) where video signals of I fields (I=integer) are recorded, the improvement comprising: the M tracks being divided into N track groups each having S tracks (S=integer=M/N) arranged successively such that the audio signals of a j-th channel (j=integer) in the N channels are recorded on the tracks of an i-th track group (i=integer) in the N track groups.
Inventors
- 👤 Chiyoko Matsumi
- 👤 Susumu Yamaguchi
- 👤 Akira Iketani
- 👤 Tatsuro Juri
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 14:58
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/12; G11B20/1201; G11B20/1207; G11B20/1208; H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/926; H04N5/9265; H04N5/9267; H04N5/9268; H04N9/00; H04N9/79; H04N9/80; H04N9/802
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
82 words
In a method of recording digital signals, in which all audio signals of N channels (N=integer) are recorded on M tracks (M=integer > N) where video signals of I fields (I=integer) are recorded, the improvement comprising: the M tracks being divided into N track groups each having S tracks (S=integer=M/N) arranged successively such that the audio signals of a j-th channel (j=integer) in the N channels are recorded on the tracks of an i-th track group (i=integer) in the N track groups.
Claim 2
Dependent Claim
42 words
A method as claimed in Claim 1, wherein in each of the track groups, audio signals abutting, in sampling sequence, on one audio signal recorded on one track are not disposed in the one track and neighboring tracks of the one track.
Claim 3
Dependent Claim
39 words
A method as claimed in Claim 2, wherein in each of the track groups, audio signals abutting, in sampling sequence, on each of all audio signals in each of a first track are not disposed in the last track.
Claim 4
Dependent Claim
89 words
A method as claimed in Claim 1, wherein each of the M tracks is divided into a video signal portion (33) and an audio signal portion (35) and the audio signal portion (35) is divided into K synchronous blocks (K=integer) such that L synchronous blocks (L=integer < K) of the K synchronous blocks are allotted to audio signal data (45), with the remaining (K-L) synchronous blocks being allotted to error correction and check codes (47), the L synchronous blocks being, respectively, provided with areas (46) for recording auxiliary data.
Claim 5
Dependent Claim
39 words
A method as claimed in Claim 4, wherein I=2, M=10, N=2, K=9 and L=6 are adopted for the video signals of 525 system, while I=2, M=12, N=2, K=9 and L=6 are adopted for the video signals of 625 system.
Claim 6
Dependent Claim
118 words
A method as claimed in Claim 5, wherein the audio signal data (45) corresponding to the video signals of the I fields are sampled continuously in time series in an area of the L synchronous blocks in each of the S tracks and repeatedly at a period of 30 samples for the video signals of 525 system and at a period of 36 samples for the video signals of 625 system by employing values of Table 1 below and values of Table 2 below as initial values of time series sampling for the video signals of 525 system and the video signals of 625 system, respectively, whereby the audio signal data (45) are recorded in an interleaved array.
Claim 7
Dependent Claim
84 words
A method as claimed in Claim 6, wherein when the audio signals asynchronous with the video signals are recorded, the audio signals are divided by a period of the I fields of the video signals such that the number of samples assumes an integer, wherein the audio signals sampled during the period of the I fields of the video signals are recorded together with a value indicative of the number of samples performed during the period of the I fields of the video signals.
Claim 8
Dependent Claim
34 words
A method as claimed in Claim 7, wherein the value indicative of the number of samples performed during the period of the I fields of the video signals is recorded as the auxiliary data.
Claim 9
Dependent Claim
113 words
A method as claimed in Claim 5, wherein the audio signal data (45) corresponding to the video signals of the I fields are sampled continuously in an area of the L synchronous blocks in each of the S tracks and repeatedly at a period of 30 samples for the video signals of 525 system and at a period of 36 samples for the video signals of 625 system by employing values of Table 3 below and values of Table 4 below as initial values of sampling for the video signals of 525 system and the video signals of 625 system, respectively, whereby the audio signal data (45) are recorded in an interleaved array.
Claim 10
Dependent Claim
84 words
A method as claimed in Claim 9, wherein when the audio signals asynchronous with the video signals are recorded, the audio signals are divided by a period of the I fields of the video signals such that the number of samples assumes an integer, wherein the audio signals sampled during the period of the I fields of the video signals are recorded together with a value indicative of the number of samples performed during the period of the I fields of the video signals.
Claim 11
Dependent Claim
34 words
A method as claimed in Claim 10, wherein the value indicative of the number of samples performed during the period of the I fields of the video signals is recorded as the auxiliary data.
Claim 12
Dependent Claim
34 words
A method as claimed in Claim 4, wherein the areas (46) for recording the auxiliary data have an identical capacity and are disposed at an identical position of each of the L synchronous blocks.
Claim 13
Dependent Claim
39 words
A method as claimed in Claim 12, wherein I=2, M=10, N=2, K=9 and L=6 are adopted for the video signals of 525 system, while I=2, M=12, N=2, K=9 and L=6 are adopted for the video signals of 625 system.
Claim 14
Dependent Claim
113 words
A method as claimed in Claim 13, wherein the audio signal data (45) corresponding to the video signals of the I fields are sampled continuously in an area of the L synchronous blocks in each of the S tracks and repeatedly at a period of 30 samples for the video signals of 525 system and at a period of 36 samples for the video signals of 625 system by employing values of Table 1 below and values of Table 2 below as initial values of sampling for the video signals of 525 system and the video signals of 625 system, respectively, whereby the audio signal data (45) are recorded in an interleaved array.
Claim 15
Dependent Claim
84 words
A method as claimed in Claim 14, wherein when the audio signals asynchronous with the video signals are recorded, the audio signals are divided by a period of the I fields of the video signals such that the number of samples assumes an integer, wherein the audio signals sampled during the period of the I fields of the video signals are recorded together with a value indicative of the number of samples performed during the period of the I fields of the video signals.
Claim 16
Dependent Claim
34 words
A method as claimed in Claim 15, wherein the value indicative of the number of samples performed during the period of the I fields of the video signals is recorded as the auxiliary data.
Claim 17
Dependent Claim
113 words
A method as claimed in Claim 13, wherein the audio signal data (45) corresponding to the video signals of the I fields are sampled continuously in an area of the L synchronous blocks in each of the S tracks and repeatedly at a period of 30 samples for the video signals of 525 system and at a period of 36 samples for the video signals of 625 system by employing values of Table 3 below and values of Table 4 below as initial values of sampling for the video signals of 525 system and the video signals of 625 system, respectively, whereby the audio signal data (45) are recorded in an interleaved array.
Claim 18
Dependent Claim
84 words
A method as claimed in Claim 17, wherein when the audio signals asynchronous with the video signals are recorded, the audio signals are divided by a period of the I fields of the video signals such that the number of samples assumes an integer, wherein the audio signals sampled during the period of the I fields of the video signals are recorded together with a value indicative of the number of samples performed during the period of the I fields of the video signals.
Claim 19
Dependent Claim
34 words
A method as claimed in Claim 18, wherein the value indicative of the number of samples performed during the period of the I fields of the video signals is recorded as the auxiliary data.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.