The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 22, 1998
Filed:
Nov. 29, 1995
Tadanori Ryu, Ikeda, JP;
Ricoh Company, Ltd., Tokyo, JP;
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.