US4316223A
Expired / Lapsed
US
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Recording of digital signals
Assignee: Individual
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Filing: 1980-03-10
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Granted: 1982-02-16
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Expires: 2000-03-10
Abstract
Abstract Digital recording and reproducing apparatus is disclosed for recording digital signals in such a manner as to conceal errors contained therein, including a write address generator for storing incoming digital signals in a first sequence in a memory, and a read address generator for causing the signals to be read out from the memory in a second sequence different from the first sequence. A control device selectively connects the write address generator and the read address generator sequentially to the memory, whereby the digital signals read out from the memory may be recorded on a recording medium.
Inventors
- 👤 John L. E. Baldwin
- 👤 John G. S. Ive
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:09
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/926; G; G11; G11B; G11B20/00; G11B20/10; G11B20/18; G11B20/1806; G11B20/1809
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
164 words
Apparatus for recording digital signals in the form of words comprising (a) means for receiving incoming digital signals; (b) memory means (10,11) connected with said receiving means; (c) write address generator means (14) for causing the incoming digital signals to be stored in said memory means in the form of words in a first sequence; (d) read address generator means (17) for causing the digital signals in said memory means to be read out from said memory means in a second sequence different from the first sequence, said read and write address generator means each including dividing circuits (40,42) each having a divisor which is a function of the number of digital signals in a block of said signals; (c) control means for selectively connecting said write address generator means and said read address generator means sequentially to said memory means; and (f) recording means connected with said memory means for recording on a given medium the digital signals read out from said memory.
Claim 2
Dependent Claim
164 words
Apparatus for recording digital signals in the form of words comprising (a) means for receiving incoming digital signals; (b) memory means (10,11) connected with said receiving means; (c) write address generator means (14) for causing the incoming digital signals to be stored in said memory means in the form of words in a first sequence; (d) read address generator means (17) for causing the digital signals in said memory means to be read out from said memory means in a second sequence different from the first sequence, said read and write address generator means each including dividing circuits (40,42) each having a divisor which is a function of the number of digital signals in a block of said signals; (c) control means for selectively connecting said write address generator means and said read address generator means sequentially to said memory means; and (f) recording means connected with said memory means for recording on a given medium the digital signals read out from said memory.
Claim 3
Dependent Claim
16 words
Recording apparatus according to claim 1, wherein one of the dividing circuits has its outputs transposed.
Claim 4
Dependent Claim
21 words
Recording apparatus according to claim 1 wherein one of the read and write address generators further includes a read only memory.
Claim 5
Dependent Claim
45 words
Recording apparatus according to claim 1, wherein the memory means comprises two memory devices, the control means being arranged to connect the write address generator to one of the memory devices while the read address generator is connected to the other of the memory devices.
Claim 6
Dependent Claim
248 words
Digital recording and reproducing apparatus, comprising, (a) means for receiving incoming digital signals; (b) record memory means (10,11) connected with said receiving means; (c) record write address generator means (14) for causing the incoming digital signals to be stored in the memory means in word form in a first sequence; (d) record read address generator means for causing the digital words in said memory means to be read out from the memory means in a second sequence different to the first, said write address and read address generator means each including a divider circuit having a divisor that is a function of the number of digital words in a block thereof; (e) recording means for recording the signals on a medium; (f) reproducing means for reproducing the signals recorded on medium; (g) reproduce memory means connected with said reproducing means for storing the digital signals reproduced from the record medium; (h) reproduce with address generator means for causing the reproduced digital signals to be stored in the reproduce memory means in said second sequence; (i) reproduce read address generator means for causing the digital signals in said reproduce memory means to be read out from said memory means in said first sequence, said reproduce write address and read address generator means each including a divider circuit having a divisor that is a function of the number of digital words in a block thereof; and (j) control means for selecting one of the read or reproduce modes of operation.
Claim 7
Dependent Claim
248 words
Digital recording and reproducing apparatus, comprising, (a) means for receiving incoming digital signals; (b) record memory means (10,11) connected with said receiving means; (c) record write address generator means (14) for causing the incoming digital signals to be stored in the memory means in word form in a first sequence; (d) record read address generator means for causing the digital words in said memory means to be read out from the memory means in a second sequence different to the first, said write address and read address generator means each including a divider circuit having a divisor that is a function of the number of digital words in a block thereof; (e) recording means for recording the signals on a medium; (f) reproducing means for reproducing the signals recorded on medium; (g) reproduce memory means connected with said reproducing means for storing the digital signals reproduced from the record medium; (h) reproduce with address generator means for causing the reproduced digital signals to be stored in the reproduce memory means in said second sequence; (i) reproduce read address generator means for causing the digital signals in said reproduce memory means to be read out from said memory means in said first sequence, said reproduce write address and read address generator means each including a divider circuit having a divisor that is a function of the number of digital words in a block thereof; and (j) control means for selecting one of the read or reproduce modes of operation.
Claim 8
Dependent Claim
19 words
Digital recording and reproducing apparatus according to claim 5 wherein one of the dividing circuits has its outputs transposed.
Claim 9
Dependent Claim
26 words
Digital recording and reproducing apparatus according to claim 5 wherein at least one of the read and write address generators further includes a read only memory.
Claim 10
Dependent Claim
48 words
Digital recording and reproducing apparatus according to claim 5 wherein the memory means comprises two memory devices, the control means being arranged to connect the write address generator to one of the memory devices while the read address generator is connected to the other of the memory devices.
Claim 11
Dependent Claim
50 words
Digital recording and reproducing apparatus according to claim 5, wherein the record memory means also constitutes the reproduce memory means; said control means altering the connections to the record memory means of the record and reproduce read and write address generators depending on the mode of operation of the apparatus.
Claim 12
Dependent Claim
43 words
Digital recording and reproducing apparatus according to claim 9, wherein the record write address generator constitutes the reproduce read address generator and the record read address generator constitutes the reproduce write address generator when the apparatus is in the reproduce mode of operation.
Claim 13
Dependent Claim
161 words
Playback apparatus for reproducing digital signals recorded on a recording medium, comprising means for generating digital signals from the signals recorded on the recording medium memory means for storing the incoming digital signals and connected to the receiving means, write address generator means for causing the incoming digital signals to be stored in the memory means in a first sequence, read address generator means for causing the digital signals in the memory means to be read out from the memory means in a second sequence different to the first, each of said read and write address generator means including a dividing circuit having a divisor which is a function of the number of digital signals in a block of said signals, control means for selectively sequentially connecting the write address generator means and the read address generator means to the memory means, and decoding means connected to the memory means for decoding the digital signals read out from the memory means.
Claim 14
Dependent Claim
161 words
Playback apparatus for reproducing digital signals recorded on a recording medium, comprising means for generating digital signals from the signals recorded on the recording medium memory means for storing the incoming digital signals and connected to the receiving means, write address generator means for causing the incoming digital signals to be stored in the memory means in a first sequence, read address generator means for causing the digital signals in the memory means to be read out from the memory means in a second sequence different to the first, each of said read and write address generator means including a dividing circuit having a divisor which is a function of the number of digital signals in a block of said signals, control means for selectively sequentially connecting the write address generator means and the read address generator means to the memory means, and decoding means connected to the memory means for decoding the digital signals read out from the memory means.
Claim 15
Dependent Claim
183 words
Apparatus for recording a digital signal in the form of digital words, comprising (a) means for receiving an incoming digital signal in the form of digital words in a first sequence; (b) memory means (10, 11) connected with said receiving means; (c) write address generator means (14) for causing the incoming digital signals to be stored in said memory means in the form of words in a second sequence; (d) read address generator means (17) for causing the digital signals in said memory means to be read out from said memory means in a third sequence different from the first sequence; (e) control means for selectively connecting said write address generator means and said read address generator means sequentially to said memory means; and (f) recording means connected with said memory means for recording on a given medium the digital signals read out from said memory; (g) each of said read and write address generator means including at least one dividing circuit (40, 42) having a divisor which is a function of the number of digital signals in a block of said signals.
Claim 16
Dependent Claim
183 words
Apparatus for recording a digital signal in the form of digital words, comprising (a) means for receiving an incoming digital signal in the form of digital words in a first sequence; (b) memory means (10, 11) connected with said receiving means; (c) write address generator means (14) for causing the incoming digital signals to be stored in said memory means in the form of words in a second sequence; (d) read address generator means (17) for causing the digital signals in said memory means to be read out from said memory means in a third sequence different from the first sequence; (e) control means for selectively connecting said write address generator means and said read address generator means sequentially to said memory means; and (f) recording means connected with said memory means for recording on a given medium the digital signals read out from said memory; (g) each of said read and write address generator means including at least one dividing circuit (40, 42) having a divisor which is a function of the number of digital signals in a block of said signals.
Claim 17
Dependent Claim
17 words
Recording apparatus according to claim 12 wherein the first sequence is the same as the second sequence.
Claim 18
Dependent Claim
23 words
Recording apparatus according to claim 12 wherein at least one of the read and write address generators further includes a read only memory.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-02-15 | 1985-08-17 | 1986-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-15 | 1989-08-17 | 1990-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-15 | 1993-08-17 | 1994-02-16 | $7700.00 | Window Closed / Lapsed |