Coded data generation or conversion – Digital code to digital code converters – Tree structure
Patent
1995-11-29
1998-09-22
Geckil, Mehmet B.
Coded data generation or conversion
Digital code to digital code converters
Tree structure
395842, 395834, 341143, G06F 1300
Patent
active
058128735
ABSTRACT:
An address generating circuit generates addresses. A decoder reads compressed data from a recording medium according to the addresses supplied by the address generating circuit and decodes thus-read data. An address switching circuit selects one of an address supplied by the address generating circuit and an address supplied from an external address bus. A data switching circuit selects one of data supplied from the recording medium and data supplied by the decoder. The decoder circuits enters one of a through mode and a decoding mode, input data being output as it is in the through mode, input compressed data being decoded and the thus-decoded data being output in the decoding mode. When an address relevant to the recording medium is given externally, the decoder circuit enters the through mode and data thus read out from the recording medium is output to the data bus, and when an address relevant to the recording medium is given from the address generating circuit, the decoder circuit enters the decoding mode, reads compressed data from the recording medium, decodes it and outputs the decoded data to the data bus.
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patent: 5177480 (1993-01-01), Clark
patent: 5359420 (1994-10-01), Kim
patent: 5414686 (1995-05-01), Iitsuka
patent: 5446557 (1995-08-01), Haze
patent: 5550363 (1996-08-01), Obata
patent: 5627650 (1997-05-01), Nosaki et al.
Geckil Mehmet B.
Ricoh & Company, Ltd.
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