US Patent No: 6,700,721
Number of patents in Portfolio can not be more than 2000
Magnetic recording and reproducing apparatus and semiconductor integrated circuit for use in the same comprising a read/write signal processor having an interleave write data generator
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Mar 2, 2004
Issued date -
Jul 10, 2002
filing date -
10/191,562
serial no -
In Force
status
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Abstract
A magnetic recording and reproducing apparatus includes a R/W signal processor having a write data generator arranged to be of an interleave system and transmitting/receiving data to/from the R/W amplifier via a plurality of signal lines. In addition, the R/W amplifier has a compound circuit provided for the write data of the interleave system from the R/W signal processor and is formed as an integrated circuit, moreover, a 1/2 prescaler is provided at the output of the write data generator, making transmitting and receiving write data in NRZI CODE.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,243,604 On-the-fly error correction | 8 | 1990 | |
| 5,530,600 Signal processing system including adaptive read equalizer with shut off mode for disk drives | 5 | 1995 | |
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| 5,355,263 Rotary head type magnetic tape apparatus | 6 | 1990 | |
| 5,481,554 Data transmission apparatus for transmitting code data | 94 | 1993 | |
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| 5,694,064 Peak detection circuit and magnetic storage medium playback apparatus | 4 | 1995 | |
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| 5,359,631 Timing recovery circuit for synchronous waveform sampling | 55 | 1992 | |
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| 5,307,214 Magnetic recording apparatus | 6 | 1992 | |
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| 5,028,922 Multiplexed encoder and decoder with address mark generation/check and precompensation circuits | 46 | 1989 | |
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| 4,964,107 Relative timing precompensation of high-speed pulse signals for digital magnetic recoding | 19 | 1990 | |
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| 5,680,264 Dynamically damped magnetic recording circuit | 8 | 1995 | |
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| 5,488,518 Programmable pre-amplifier using a serial shift register to output a plurality of control signals | 20 | 1994 | |
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| 5,340,940 Musical tone generation apparatus capable of writing/reading parameters at high speed | 8 | 1991 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 2, 2015 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |