US Patent No: 6,807,584
Number of patents in Portfolio can not be more than 2000
Apparatus and method for exchanging status information between boards
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Oct 19, 2004
Issued date -
Dec 26, 2001
filing date -
10/025,884
serial no -
In Force
status
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Abstract
An apparatus and method for exchanging information between printed circuit board assemblies of the present invention are disclosed. According to the invention, the number of address pins are assigned according to the amount of information to be exchanged between the boards. In a preferred embodiment, where data is transferred in 8 bit words, the amount of data that can be transferred using an address bits is given by 8.times.2.sup.n. Thus, more status information can be exchanged with fewer edge pins. The duplication function between boards can so be more effectively implemented.
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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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| 6,242,950 Bidirectional data transfer path having increased bandwidth | 3 | 1999 | |
| 6,515,515 Bidirectional data transfer path having increased bandwidth | 3 | 1999 | |
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| 6,335,720 Data transfer method, display driving circuit using the method, and image display apparatus | 17 | 2000 | |
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| 5,850,154 Data transmission method and data transmission circuit | 5 | 1996 | |
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| 5,446,859 Register addressing control circuit including a decoder and an index register | 12 | 1992 | |
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| 5,844,856 Dual port memories and systems and methods using the same | 21 | 1996 | |
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| 5,537,557 Interface between unsynchronised devices | 5 | 1994 | |
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| 6,381,293 Apparatus and method for serial data communication between plurality of chips in a chip set | 34 | 1999 | |
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 | Apr 19, 2016 |
| 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 |
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