US4847703A
Expired / Lapsed
US
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Data transmission and detection system
Assignee: Canon Inc
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Filing: 1986-05-29
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Granted: 1989-07-11
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Expires: 2006-05-29
Abstract
Abstract A data transmission system and apparatus used for recording on a recording medium an audio signal, compressed in time base with a predetermined compression ratio, together with a data signal for reproduction of the audio signal. The data signal is compresed of serial data of bits. A dummy bit is provided before the head bit of the serial data with the dummy bit being in inverted relation to the head bit. A detection system and apparatus for detection of the data transmitted by the data transmission system, and a recording medium on which signals are recorded according to the data transmission system are disclosed.
Inventors
- 👤 Tsuguhide Sakata
- 👤 Norio Kimura
- 👤 Tomishige Taguchi
- 👤 Masahiro Takei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:02
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/38; H; H04; H04L; H04L7/00; H04L7/04; H04L7/041; H04L7/046; G11; G11B; G11B20/00; G11B20/10; G11B20/12; G11B20/1217; G11B20/1251; H04L25/00; H04L25/02; H04L25/06; H04L25/069; G11B20/10527; G11B2020/10537; G11B2020/10546; G11B2220/00; G11B2220/20; G11B2220/25; G11B2220/2508; H04L7/044
Claims Analysis
Total Claims: 53
Claim 1
Independent Claim
70 words
A data transmission system comprising: (a) a first of dividing serial data of bits; and (b) a second stop of transmitting said divided data with a dummy bit before a head bit of each divided data, said dummy bit being in inverted relationship to said head bit regardless of a value of said head bit, wherein for at least one of said divided data only the dummy bit is provided.
Claim 2
Dependent Claim
70 words
A data transmission system comprising: (a) a first of dividing serial data of bits; and (b) a second stop of transmitting said divided data with a dummy bit before a head bit of each divided data, said dummy bit being in inverted relationship to said head bit regardless of a value of said head bit, wherein for at least one of said divided data only the dummy bit is provided.
Claim 3
Dependent Claim
17 words
A data transmission system of claim 1, wherein said serial data is represented by an NRZ code.
Claim 4
Dependent Claim
20 words
A data transmission system of claim 1, wherein said serial data of bits is divided 8 bits by 8 bits.
Claim 5
Dependent Claim
35 words
A data transmission system of claim 1, further including: (c) a third step, subsequent to said second step, of transmitting an error detecting data for said serial data subsequent to said serial data of bits.
Claim 6
Dependent Claim
28 words
A data transmission system of claim 1, further including: (d) a fourth step, performed before said second step, of transmitting synchronism data before said serial data is transmitted.
Claim 7
Dependent Claim
26 words
A data transmission system of claim 5, wherein said serial data is divided 8 bits by 8 bits and wherein said synchronism data includes 8 bits.
Claim 8
Dependent Claim
80 words
A data transmission apparatus for transmitting data of bits, comprising: (a) means for dividing said data of bits into data units of a predetermined number of bits; and (b) means for providing a dummy bit before a head bit of each of said divided data units, said dummy bit being in inverted relationship to said head bit regardless of a value of said head bit, wherein for at least one of said divided data only the dummy bit is provided.
Claim 9
Dependent Claim
80 words
A data transmission apparatus for transmitting data of bits, comprising: (a) means for dividing said data of bits into data units of a predetermined number of bits; and (b) means for providing a dummy bit before a head bit of each of said divided data units, said dummy bit being in inverted relationship to said head bit regardless of a value of said head bit, wherein for at least one of said divided data only the dummy bit is provided.
Claim 10
Dependent Claim
17 words
A data transmission apparatus of claim 7, wherein said serial data is represented by an NRZ code.
Claim 11
Dependent Claim
15 words
A data transmission apparatus of claim 7, wherein said predetermined number of bits is 8.
Claim 12
Dependent Claim
19 words
A data transmission apparatus of claim 7, further including: (c) means for providing error detecting data to said data.
Claim 13
Dependent Claim
22 words
A data transmission apparatus of claim 7, further including: (d) means for providing a synchronism signal at the head of said data.
Claim 14
Dependent Claim
27 words
A data transmission apparatus of claim 11, wherein said data of bits are divided 8 bits by 8 bits and wherein said synchronism signal includes 8 bits.
Claim 15
Dependent Claim
91 words
A transmission system which transmits a data signal to reproduce an audio signal compressed at a predetermined compression ratio, comprising: (a) means for dividing said data signal into a predetermined number of data units; and (b) means for providing a dummy bit before a head bit of each of said data units divided by said dividing means, said dummy bit being in inverted relationship to said head bit regardless of a value of said head bit, wherein for at least one of said divided data only the dummy bit is provided.
Claim 16
Dependent Claim
91 words
A transmission system which transmits a data signal to reproduce an audio signal compressed at a predetermined compression ratio, comprising: (a) means for dividing said data signal into a predetermined number of data units; and (b) means for providing a dummy bit before a head bit of each of said data units divided by said dividing means, said dummy bit being in inverted relationship to said head bit regardless of a value of said head bit, wherein for at least one of said divided data only the dummy bit is provided.
Claim 17
Dependent Claim
16 words
A transmission system of claim 13, wherein said data signal is represented by an NRZ signal.
Claim 18
Dependent Claim
27 words
A transmission system of claim 13, wherein said data signal includes serial data of bits which is divided into a plurality of data units of 8 bits.
Claim 19
Dependent Claim
19 words
A transmission system of claim 13, further including: (c) means for providing error detection data to said data signal.
Claim 20
Dependent Claim
22 words
A transmission system of claim 13, further including: (d) means for providing a synchronism signal at the head of said data signal.
Claim 21
Dependent Claim
37 words
A transmission system of claim 17, wherein said data signal includes serial data of bits which is divided into a plurality of data units of 8 bits and wherein said synchronism signal is composed of 8 bits.
Claim 22
Dependent Claim
17 words
A transmission system of claim 17, wherein said data signal includes data indicative of said compression ratio.
Claim 23
Dependent Claim
14 words
A transmission system of claim 16, wherein said error detection data includes a CRCC.
Claim 24
Dependent Claim
87 words
A detection system which detects serial data of bits, comprising: (a) a first step of detecting an inverting edge between a head bit of said serial data and a dummy bit provided before said head bit, said dummy bit being in inverted relationship to said head bit regardless of a value of said head bit, wherein for at least one said head bit only the dummy bit is provided; and (b) a second step of detecting said serial data on the basis of said detected inverting edge.
Claim 25
Dependent Claim
87 words
A detection system which detects serial data of bits, comprising: (a) a first step of detecting an inverting edge between a head bit of said serial data and a dummy bit provided before said head bit, said dummy bit being in inverted relationship to said head bit regardless of a value of said head bit, wherein for at least one said head bit only the dummy bit is provided; and (b) a second step of detecting said serial data on the basis of said detected inverting edge.
Claim 26
Dependent Claim
16 words
A detection system of claim 21, wherein said serial data is represented by an NRZ code.
Claim 27
Dependent Claim
20 words
A detection system of claim 21, wherein said dummy bit is provided to every 8 bits of said serial data.
Claim 28
Dependent Claim
33 words
A detection system of claim 21, wherein said first step includes the step of resetting a generator which generates a clock signal to detect said inverting edge thereby to read said serial data.
Claim 29
Dependent Claim
23 words
A detection system of claim 24, wherein said second step includes the step of reading said serial data synchronously with said clock signal.
Claim 30
Dependent Claim
35 words
A detection system of claim 21, wherein said second step includes the step of detecting said serial data at substantially the center of each bit of said data on the basis of said inverting edge.
Claim 31
Dependent Claim
60 words
A transmission system for transmission of serial data of bits, characterized by means for providing a dummy bit before a head bit of said serial data, said dummy bit being in inverted relationship to said head bit regardless of a value of said head bit and wherein for at least one said head bit only said dummy bit is provided.
Claim 32
Dependent Claim
60 words
A transmission system for transmission of serial data of bits, characterized by means for providing a dummy bit before a head bit of said serial data, said dummy bit being in inverted relationship to said head bit regardless of a value of said head bit and wherein for at least one said head bit only said dummy bit is provided.
Claim 33
Dependent Claim
16 words
A transmission system of claim 27, wherein said serial data is represented by an NRZ code.
Claim 34
Dependent Claim
21 words
A transmission system of claim 27, wherein said dummy data is provided one bit to each serial data of 8 bits.
Claim 35
Dependent Claim
22 words
A transmission system of claim 27, wherein an error detecting signal for said serial data is transmitted subsequent to said serial data.
Claim 36
Dependent Claim
82 words
A detection system for detection of serial data of bits, characterized by the step of detecting said serial data on the basis of an inverting edge provided between the head bit of said serial data of bits and a dummy bit provided before said data head bit, said dummy bit being in inverted relationship to said data head bit regardless of a value of said head bit, wherein for at least one of said head bit only said dummy bit is provided.
Claim 37
Dependent Claim
82 words
A detection system for detection of serial data of bits, characterized by the step of detecting said serial data on the basis of an inverting edge provided between the head bit of said serial data of bits and a dummy bit provided before said data head bit, said dummy bit being in inverted relationship to said data head bit regardless of a value of said head bit, wherein for at least one of said head bit only said dummy bit is provided.
Claim 38
Dependent Claim
16 words
A detection system of claim 31, wherein said serial data is represented by an NRZ code.
Claim 39
Dependent Claim
22 words
A detection system of claim 31, wherein said dummy data is provided one bit to each 8 bits of said serial data.
Claim 40
Dependent Claim
101 words
A detection apparatus which detects serial data of bits to reproduce an audio signal compressed with a predetermined compression ratio, comprising: (a) first for detecting an inverting edge between the head bit of said serial data and a dummy bit provided before said data head bit, said dummy bit being in inverted relationship to said data head bit regardless of a value of said head bit, wherein for at least one said head bit only said dummy bit is provided; and (b) second means for detecting said serial data on the basis of said inverting edge detected by said first means.
Claim 41
Dependent Claim
101 words
A detection apparatus which detects serial data of bits to reproduce an audio signal compressed with a predetermined compression ratio, comprising: (a) first for detecting an inverting edge between the head bit of said serial data and a dummy bit provided before said data head bit, said dummy bit being in inverted relationship to said data head bit regardless of a value of said head bit, wherein for at least one said head bit only said dummy bit is provided; and (b) second means for detecting said serial data on the basis of said inverting edge detected by said first means.
Claim 42
Dependent Claim
16 words
A detection apparatus of claim 34, wherein said serial data is represented by an NRZ code.
Claim 43
Dependent Claim
20 words
A detection apparatus of claim 34, wherein said dummy bit is provided to each 8 bits of said serial data.
Claim 44
Dependent Claim
54 words
A detection apparatus of claim 34, wherein said second means includes: (a) means for generating a clock signal to read said serial data; (b) means for resetting said generating means in response to said inverting edge detected by said first means; and (c) means reading said serial data in response to said clock signal.
Claim 45
Dependent Claim
33 words
A detection apparatus of claim 37, wherein said generating means includes a generator for generating a clock signal to read said serial data at substantially the center of each bit of said data.
Claim 46
Dependent Claim
33 words
A detection apparatus of claim 37, wherein said first means includes means for detecting a synchronism signal provided before said dummy bit and detecting said inverting edge when said synchronism signal is detected.
Claim 47
Dependent Claim
31 words
A detection apparatus of claim 39, wherein said dummy bit is provided one bit to each 8 bits of said serial data and wherein said synchronism signal is of 8 bits.
Claim 48
Dependent Claim
102 words
A recording medium on which an audio signal compressed in time base with a predetermined compression ratio is recorded together with a data signal to reproduce the audio signal in a block defined by a start signal and an end signal; wherein said data signal is composed of serial data of bits and wherein a dummy bit is provided before the head bit of said serial data, said dummy bit being in inverted relationship to said data head bit regardless of a value of said head bit and wherein for at least one said head bit only said dummy bit is provided.
Claim 49
Dependent Claim
102 words
A recording medium on which an audio signal compressed in time base with a predetermined compression ratio is recorded together with a data signal to reproduce the audio signal in a block defined by a start signal and an end signal; wherein said data signal is composed of serial data of bits and wherein a dummy bit is provided before the head bit of said serial data, said dummy bit being in inverted relationship to said data head bit regardless of a value of said head bit and wherein for at least one said head bit only said dummy bit is provided.
Claim 50
Dependent Claim
14 words
A recording medium of claim 41, wherein said recording medium includes a disk-like one.
Claim 51
Dependent Claim
15 words
A recording medium of claim 41, wherein said recording medium includes a magnetic recording medium.
Claim 52
Dependent Claim
14 words
A recording medium of claim 41, wherein said data signal includes said compression ratio.
Claim 53
Dependent Claim
20 words
A recording medium of claim 42, wherein said recording medium includes concentric track formed thereon, each including four said blocks.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |