PCM SIGNAL RECORDING AND REPRODUCING DEVICE专利检索-..脉冲调制记录或重现的（脉冲编码调制记录的入G11B20/10）专利检索查询-专利查询网

PCM SIGNAL RECORDING AND REPRODUCING DEVICE
申请号	JP15812485	申请日	1985-07-19	公开(公告)号	JPS6220180A	公开(公告)日	1987-01-28
申请人	HITACHI LTD;			发明人	OKAMOTO HIROO; KIMURA HIROYUKI; YAMAZAKI SHIGERU; NOGUCHI TAKAHARU; KOBAYASHI MASAHARU;
摘要	PURPOSE:To accomplish high-speed copying without increasing the speed accessing to a storage circuit by using two storage circuits, and executing the error correction of PCM signals stored in one of the said circuits during the PCM signals are being written in or read out from the other circuit. CONSTITUTION:In case of copying the PCM signal recorded in a magnetic tape 1 to a magnetic tape 2, the signal reproduced from the tape 1 is stored in a RAM 10 or 11, thereafter errors are corrected then the results are read again from the RAM 10 or 11 to be recorded in the tape 2. In such a case, the RAMs 10 and 11 are switched and are alternately used for the writing and reading or error-correcting to slow down the speed accessing to the RAMs and the circuits. Also, only one recording and reproducing circuit and one error- correcting circuit are used, therefore, the scale of the circuitry does not become large.
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