US5375017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for duplication of bit-pattern on recording medium
Assignee: Ed Contrive and Co Ltd
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Filing: 1994-02-25
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Granted: 1994-12-20
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Expires: 2014-02-25
Abstract
Abstract In accordance with the duplication of bit-patterns on a recording medium of the present invention, presence of gaps as defined by one or more words of predetermined code in data is judged, then with having these gaps as the write-succession points, and placing an unwritable bit-pattern in these respective gaps, data is written in onto the recording medium of the transfer-destination. Thus, the write-succession points can be determined, and the occurrence of bit-shift can be avoided. In addition, transmission of data on the recording media over a long distance become possible.
Inventors
- 👤 Ayumu Kawai
- 👤 Saburo Iwano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:16
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/06; G06F3/0601; G11; G11B; G11B20/00; G11B20/10; G06F3/0668; G06F3/0671; G06F3/0673
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
201 words
Apparatus for transfer of binary bit-pattern data stored on a recording medium at a transfer dispatcher to a recording medium at a transfer-destination comprising: means for reading out one track of data of a particular length from the data stored on the recording medium at the transfer-dispatcher, memory means for storing said read out one-track of data, means for reading out said stored one-track of data from said memory means and means for judging the presence in said one-track of data read out from said memory means of gap code data, means for re-storing in said memory means said one-track of data read out from the recording medium at said transfer dispatcher, the re-storing of said one-track of data starting from said gap code data as judged by said judging means, means for replacing a part of said gap code data of the restored one-track data with a pattern of bits which can be read out by, but cannot be written over by, a recording medium controller, and means for writing in on a recording medium at the transfer-destination said re-stored one-track of data from said memory means with said pattern of bits at the head of the data written in.
Claim 2
Dependent Claim
201 words
Apparatus for transfer of binary bit-pattern data stored on a recording medium at a transfer dispatcher to a recording medium at a transfer-destination comprising: means for reading out one track of data of a particular length from the data stored on the recording medium at the transfer-dispatcher, memory means for storing said read out one-track of data, means for reading out said stored one-track of data from said memory means and means for judging the presence in said one-track of data read out from said memory means of gap code data, means for re-storing in said memory means said one-track of data read out from the recording medium at said transfer dispatcher, the re-storing of said one-track of data starting from said gap code data as judged by said judging means, means for replacing a part of said gap code data of the restored one-track data with a pattern of bits which can be read out by, but cannot be written over by, a recording medium controller, and means for writing in on a recording medium at the transfer-destination said re-stored one-track of data from said memory means with said pattern of bits at the head of the data written in.
Claim 3
Dependent Claim
27 words
Apparatus as in claim 1 further comprising means for transmitting the re-stored data read out from said memory means to a recording medium at a distant location.
Claim 4
Dependent Claim
317 words
Apparatus for transfer of binary bit-pattern data stored on a recording medium at a transfer-dispatcher to a recording medium at a transfer-destination comprising: read-out means for reading out one-track of data of a particular length from the recording medium at the transfer-dispatcher; a recording medium controller circuit for receiving the data read out by .said read-out means; judging means for judging whether said one-track of data can be processed by said recording medium controller circuit; change over means for selecting one of first and second output-destinations, said change over means forwarding the data read out by said read-out means to said recording medium controller circuit as the first output-destination when a result of a judgment of said judging means is a first value, said change over means forwarding the data read out by said read-out means to a second output-destination when a result of a judgment of said judging means is a second value, said second output-destination including memory means for storing said one-track of data; means for reading out said one-track of data from said memory means and judging the presence of gap code data in said one track of data read out from said memory means; means for re-storing in said memory means said one-track of data read out from the recording medium at said transfer-dispatcher, the re-storing of said one-track data starting from said gap code data as judged by said judging means; means for replacing a part of said gap code data of the re-stored one-track of data with a pattern of bits which can be read out, but cannot be written over, by a recording medium controller; and means for writing on said recording medium at the transfer-destination one of said data processed by said recording medium controller circuit or said re-stored one-track of data from said memory means with said pattern of bits at the head of the data written in.
Claim 5
Dependent Claim
317 words
Apparatus for transfer of binary bit-pattern data stored on a recording medium at a transfer-dispatcher to a recording medium at a transfer-destination comprising: read-out means for reading out one-track of data of a particular length from the recording medium at the transfer-dispatcher; a recording medium controller circuit for receiving the data read out by .said read-out means; judging means for judging whether said one-track of data can be processed by said recording medium controller circuit; change over means for selecting one of first and second output-destinations, said change over means forwarding the data read out by said read-out means to said recording medium controller circuit as the first output-destination when a result of a judgment of said judging means is a first value, said change over means forwarding the data read out by said read-out means to a second output-destination when a result of a judgment of said judging means is a second value, said second output-destination including memory means for storing said one-track of data; means for reading out said one-track of data from said memory means and judging the presence of gap code data in said one track of data read out from said memory means; means for re-storing in said memory means said one-track of data read out from the recording medium at said transfer-dispatcher, the re-storing of said one-track data starting from said gap code data as judged by said judging means; means for replacing a part of said gap code data of the re-stored one-track of data with a pattern of bits which can be read out, but cannot be written over, by a recording medium controller; and means for writing on said recording medium at the transfer-destination one of said data processed by said recording medium controller circuit or said re-stored one-track of data from said memory means with said pattern of bits at the head of the data written in.
Claim 6
Dependent Claim
29 words
Apparatus as in claim 3 further comprising means for transmitting the data processed by said processing medium controller and said re-stored one track of data to a remote location.
References Cited (Backward Citations)
US4375655A
Cited
US9725899B2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-12-19 | 1998-06-20 | 1998-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-19 | 2002-06-20 | 2002-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-19 | 2006-06-20 | 2006-12-20 | $7700.00 | Window Closed / Lapsed |