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公开(公告)号:US5144500A
公开(公告)日:1992-09-01
申请号:US728304
申请日:1991-07-05
申请人: Kentaro Odaka , Shinya Ozaki , Brian Milthorp
发明人: Kentaro Odaka , Shinya Ozaki , Brian Milthorp
CPC分类号: G11B20/1803 , G11B20/1209 , G11B27/3027 , G11B27/3063 , G11B20/1211 , G11B2220/90 , G11B2220/913
摘要: A digital audio tape recorder is used as a digital data storage recorder and digital signals containing main data and sub-data are recorded in separate areas in each track of a plurality of tracks formed on a recording medium, wherein a predetermined number of tracks constitute a group and a plurality of groups are recorded on the medium. In the sub-area an identification signal is further recorded which indicates whether or not main data recorded in the main areas of a given group is same as the main data recorded in the main areas of preceding and subsequent adjacent groups. When identical data is multiply written for a plurality of units, a division of the multiply written portions is detected, and signal processing is facilitated.
摘要翻译: 使用数字音频磁带记录器作为数字数据存储记录器,并且将包含主数据和子数据的数字信号记录在形成在记录介质上的多个磁道的每个磁道中的分离区域中,其中预定数量的磁道构成 组和多个组被记录在介质上。 在子区域中,进一步记录识别信号,其指示记录在给定组的主要区域中的主要数据是否与记录在前一个和后续相邻组的主要区域中的主要数据相同。 当对于多个单元对相同的数据进行多次写入时,检测乘法写入部分的划分,并且便于信号处理。
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公开(公告)号:US5144501A
公开(公告)日:1992-09-01
申请号:US745991
申请日:1991-08-08
CPC分类号: G11B20/10 , G11B20/1209 , G11B27/3063 , G11B20/1211 , G11B2220/90 , G11B2220/913
摘要: In this invention, a predetermined amount of data is given as one frame, and data having a predetermined format is recorded for each frame. A first area recording main data and a second area recording sub data are formed in each frame. Plural types of units each consisting of a plurality of frames are set, and a number of first units from a leading end of a recording medium and the numbers of other units from the leading end of the recording medium to a trailing end of the first units are recorded in the second area of a frame constituting the unit including the trailing end, thus facilitating a high-speed search operation.
摘要翻译: 在本发明中,作为一帧给出预定数量的数据,并且每帧记录具有预定格式的数据。 在每个帧中形成记录主数据和第二区记录子数据的第一区。 设置由多个帧组成的多种类型的单元,以及来自记录介质的前端的多个第一单元和从记录介质的前端到第一单元的后端的其它单元的数量 被记录在构成包括尾端的单元的帧的第二区域中,从而便于高速搜索操作。
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公开(公告)号:US4958244A
公开(公告)日:1990-09-18
申请号:US294053
申请日:1989-01-05
IPC分类号: G11B15/087 , G11B15/02 , G11B27/10 , G11B27/28 , G11B27/30
CPC分类号: G11B27/3063 , G11B15/026 , G11B27/107 , G11B27/3027 , G11B2220/90 , G11B2220/913
摘要: A method of position detection on a recording medium is performed by moving the recording medium alternately in normal and reverse directions, while searching for a target position, and decreasing the travel speed of the recording medium with each change in direction. Immediately after a target position has been finally passed, a report signal of the search completion is generated, thereby shortening the search time.
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