专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH0991848A DATA MEMORY DEVICE 失效
公开(公告)号：JPH0991848A
公开(公告)日：1997-04-04
申请号：JP27197295
申请日：1995-09-25
申请人： TEAC CORP
发明人： ASANO NAOTAKE
IPC分类号： G06F12/08 , G06F12/00 , G11B19/02 , G11B20/10 , G11B20/18
摘要： PROBLEM TO BE SOLVED: To improve the effect of shortening access time in a CD-ROM driving device having a cache memory. SOLUTION: The cache memory is connected between the CD-ROM driving device 3 and a host device 1. The data memory device is provided with a CPU 12 for executing the processing to transfer data from the cache memory 4 to the host device 1 and the processing to form management data for managing the cache memory 4. The interruption for the processing to form the management data is not unconditionally made on the CPU when a synchronizing signal is detected from the reproduced output from the CD-ROM driving device 3. This interruption processing is provided with an inhibition section. While the interruption processing is inhibited in the period when commands, data, status and messages are being transferred, the interruption processing is inhibited in other periods.

2. 发明专利

JPH08227561A OPTICAL DISK REPRODUCING DEVICE 失效
公开(公告)号：JPH08227561A
公开(公告)日：1996-09-03
申请号：JP3231995
申请日：1995-02-21
申请人： TEAC CORP
发明人： ONDA HIROYUKI , FUJIMOTO MAKOTO , ASANO NAOTAKE , HOSONO YASUSHI
IPC分类号： G11B19/28 , G11B7/00 , G11B7/005 , G11B19/02 , G11B20/18
摘要： PURPOSE: To make a device have a high speed reproducing function of data and to reduce incidence of a read error which cannot be corrected. CONSTITUTION: An optical disk reproducing means 1 reproduces data with the prescribed data reproducing speed set by the optical disk or a data reproducing rate faster than a prescribed data reproducing rate. An error correction processing means 2 performs error detection and error correction for the prescribed data length, outputs reproduced data in which an error is already corrected, when error correction cannot be performed, a correction impossible error signal is outputted. A reproduction control means 3 sets the fastest data reproducing speed for the optical disk reproducing means 1 in an initial stage state, when reproduction cannot be performed without causing a correction impossible error even if reproduction is repeated by controlling the optical disk reproducing means 1 for data of the prescribed length in which a correction impossible error is caused, the means 3 sets a data reproducing speed slower than the present data reproducing rate for the optical disk reproducing means 1.

你已经成功收藏专利！

检索式保存成功!

IPRDB