Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1992-01-06
1994-12-27
Chin, Tommy P.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358312, 348409, H04N 5783, H04N 713
Patent
active
053770145
ABSTRACT:
An apparatus provides digital data representative of a compressed high definition video image signal in a manner such that a conventional video tape recorder (VTR) employing current electrical and mechanical technologies is adaptable for reading this data for display in special modes such as fast forward, reverse and still frame. To minimize the loss of data while the VTR is operating in one of these special modes, the data representative of the high definition image signal is decoded by the apparatus to yield available time slots in the data stream. These time slots are then filled with data which duplicates the most important of the original transmitted data then existing in other time slots in the data stream. This duplicating of the data increases the likelihood that the important picture information will be read by the VTR while operating in a special mode. To facilitate fast recovery from lost of synchronization, the apparatus utilizes a small fraction of the original image which is included in each section or slice of the transmitted image. As synchronization is reacquired, the high definition video image is built from the image found in the slices.
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Knauer Scott C.
Matthews Kim N.
Netravali Arun N.
Petajan Eric D.
AT&T Corp.
Chin Tommy P.
Nguyen Huy
Williamson Samuel R.
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