US5153872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Information recording device that eliminates cross-talk using inverse components thereof
Assignee: Pioneer Corp
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Filing: 1990-06-12
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Granted: 1992-10-06
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Expires: 2010-06-12
Abstract
Abstract There is disclosed an information recording device composed of a memory for storing an original signal from a plurality of adjacent tracks, and a computational circuit for generating an inverse number component of a crosstalk component which is considered to be mixed in during a reproduction process on the basis of storage data from the memory to provide an actual recording signal as a product of the inverse number component and the original signal to record the actual recording signal onto the recording medium, thereby canceling a crosstalk component produced at the time of reading by the inverse number component of the crosstalk component included in the actual recording signal when the actual recording signal has been read.
Inventors
- 👤 Takanori Maeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:49
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/22; G11B20/10; G11B7/00; G11B7/004; G11B7/005
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
146 words
An information recording device comprising signal processing means for processing an original signal to be recorded onto a recording medium so as to generate an actual recording signal to be actually recorded onto the recording medium, and recording means for recording, in a track form, the actual recording signal onto the recording medium, the device comprising: memory means for memorizing original signals, corresponding to a plurality of tracks of the recording medium, the original signals comprising a target original signal to be recorded on a target track and adjacent original signals to be recorded on tracks adjacent thereto; and computation circuit means for computing a linear combination of a target original signal and a coupling coefficient generated from the adjacent original signals on the basis of storage data from said memory means to output a target actual recording signal to be recorded onto the target track.
Claim 2
Dependent Claim
146 words
An information recording device comprising signal processing means for processing an original signal to be recorded onto a recording medium so as to generate an actual recording signal to be actually recorded onto the recording medium, and recording means for recording, in a track form, the actual recording signal onto the recording medium, the device comprising: memory means for memorizing original signals, corresponding to a plurality of tracks of the recording medium, the original signals comprising a target original signal to be recorded on a target track and adjacent original signals to be recorded on tracks adjacent thereto; and computation circuit means for computing a linear combination of a target original signal and a coupling coefficient generated from the adjacent original signals on the basis of storage data from said memory means to output a target actual recording signal to be recorded onto the target track.
Claim 3
Dependent Claim
32 words
An information recording device as set forth in claim 1, wherein the coupling coefficient is an inverse of a crosstalk component which is considered to be mixed in during a reproduction process.
Claim 4
Dependent Claim
41 words
An information recording device as set forth in claim 2, wherein the target actual recording signal is a product of the original signal and an inverse of a crosstalk component which is considered to be mixed in during a reproduction process.
Claim 5
Dependent Claim
40 words
An information recording device as set forth in claim 3, wherein the target actual recording signal cancels the crosstalk component produced at the time of reading by the inverse of the crosstalk component included in the target actual recording signal.
Claim 6
Dependent Claim
40 words
An information recording device as set forth in claim 1, wherein said computation circuit means includes a signal extraction circuit for extracting the original signals from the storage data in said memory means to deliver it to a computation circuit.
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) | 1995-10-06 | 1996-04-06 | 1996-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-06 | 2000-04-06 | 2000-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-06 | 2004-04-06 | 2004-10-06 | $7700.00 | Window Closed / Lapsed |