Multipurpose digital recording method and apparatus and media therefor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 1, 2001
Grant Date -
N/A
app pub date -
Jan 24, 1997
filing date -
Jan 26, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magnetic tape (22) is formatted to be interchangeably usable by a plurality of types of devices, including an audio/visual recording/reproducing device (14), a random access recording/reproducing device (16), and a sequential access recording/reproducing device (18). The tape has frames (22) of a plurality of frame types, including control frames and user frames. Each frame has an AUX data structure (300) wherein resides a field which indicates the frame type of the frame. Selected ones of a plurality of control tables or frames (340, 342, 344, 346, 348) are present on the tape in accordance with the type of data recorded on the tape (e.g., audio/visual data and non-audio/visual data) and the particular types of devices which are to utilize the tape. The user frames of the tape have a field in the AUX data structure which specifies the nature of the data therein, e.g., as general purpose data or audio/visual data. The tape has a permanently embedded servo format whereby each of the frames are hard sectored with a permanent physical relationship to the tape.
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