Patent US4807057A successfully refreshed from Google Patents.
US4807057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data recording apparatus
Assignee: Canon Inc
•
Filing: 1988-05-23
•
Granted: 1989-02-21
•
Expires: 2008-05-23
Abstract
Abstract A data recording apparatus samples main information signals and records, on a recording medium, a sequence of data consisting of first binary data of an "n" number of bits and second binary data which also consists of the "n" number of bits including additional binary data relative to additional information not exceeding three bits and a predetermined "m" number of bits which do not simultaneously become "0".
Inventors
- 👤 Motokazu Kashida
- 👤 Masahiro Takei
- 👤 Kouji Takahashi
- 👤 Toshiyuki Masui
- 👤 Tsutomu Fukatsu
- 👤 Kenichi Nagasawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:59
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/58; G11B5/584; G11B5/588; G11B5/592; G11B5/5921; G11B5/5922; G11B20/00; G11B20/10; G11B20/10527
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
174 words
A data recording apparatus comprising: (a) designation means for designating one of an l number of parallel areas, said areas extending in the longitudinal direction of a tape-shaped recording medium, respectively: (b) data recording means including a rotary head arranged to obliquely trace said recording medium, said recording means being arranged to record data while forming many parallel recording tracks in one of said "l" number of areas designated by said designation means; (c) means for forming, by sampling a main information signal, first binary data of an "n" number of bits, where "n" is an integer; (d) means for forming second binary data of the "n" number of bits including binary data of an "m" number of bits where 2 m >l, which indicates one of said "l" number of areas designated by said designation means, said "m" number of bits of binary data never simultaneously becoming "0"; and (e) means for forming a data sequence including said first and second binary data and for supplying said data sequence to said recording means.
Claim 2
Dependent Claim
174 words
A data recording apparatus comprising: (a) designation means for designating one of an l number of parallel areas, said areas extending in the longitudinal direction of a tape-shaped recording medium, respectively: (b) data recording means including a rotary head arranged to obliquely trace said recording medium, said recording means being arranged to record data while forming many parallel recording tracks in one of said "l" number of areas designated by said designation means; (c) means for forming, by sampling a main information signal, first binary data of an "n" number of bits, where "n" is an integer; (d) means for forming second binary data of the "n" number of bits including binary data of an "m" number of bits where 2 m >l, which indicates one of said "l" number of areas designated by said designation means, said "m" number of bits of binary data never simultaneously becoming "0"; and (e) means for forming a data sequence including said first and second binary data and for supplying said data sequence to said recording means.
Claim 3
Dependent Claim
36 words
An apparatus according to claim 1, wherein said recording means is capable of setting a plurality of different track pitches for said many tracks; and said second binary data includes data indicative of said track pitch.
Claim 4
Dependent Claim
21 words
An apparatus according to claim 1, further comprising: moving means for moving said tape-shaped recording medium in the longitudinal direction thereof.
Claim 5
Dependent Claim
27 words
An apparatus according to claim 3, wherein said second binary data includes data indicative of the direction in which said moving means moves said tape-shaped recording medium.
Claim 6
Dependent Claim
25 words
An apparatus according to claim 1, further comprising means for forming a third binary data of the "n" number of bits which includes time information.
Claim 7
Dependent Claim
26 words
An apparatus according to claim 5, wherein said third binary data is arranged to show one figure portion of decimal value data with every four bits.
Claim 8
Dependent Claim
24 words
An apparatus according to claim 6, wherein said four bits of data showing one figure portion of decimal value data never simultaneously become "0".
Claim 9
Dependent Claim
51 words
An apparatus according to claim 1, wherein said main information signal includes an audio signal; and said first data of the "n" number of bits is arranged to have all the bits thereof become "0" except at least a most significant bit for indicating an average level of said audio signal.
Claim 10
Dependent Claim
27 words
An apparatus according to claim 8, further comprising means for reproducing said data sequence from one of the "l" number of areas of said tape-shaped recording medium.
Claim 11
Dependent Claim
25 words
An apparatus according to claim 9, further comprising means for detecting a data error of said data sequence after reproduction thereof by said reproducing means.
Claim 12
Dependent Claim
51 words
An apparatus according to claim 10, further comprising means for replacing the binary data of the "n" number of bits when the data is detected as in error by said detecting means with data of "n" number of bits in which all the bits except the most significant bit are "0".
Claim 13
Dependent Claim
10 words
An apparatus according to claim 1, wherein l=6 and m=3.
Claim 14
Dependent Claim
26 words
An apparatus according to claim 12, wherein the above mentioned binary data of m bits are one of 6 kinds of bit patterns excluding 000, 111.
References Cited (Backward Citations)
US4389681A
Cited
US4622600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-21 | 1992-08-22 | 1993-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-21 | 1996-08-22 | 1997-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-21 | 2000-08-22 | 2001-02-21 | $7700.00 | Window Closed / Lapsed |