Other

Digital Engineering, Ltd.

Victor E Jo Chiong

David J Hedberg

Edward P Denta, Jr

A real-time magnetic digital video disk recording system has been developed for applications in on-line digital imaging systems and off-line fast access image storage and retrieval buffers. The disk recorder uses new high density recording technology and Winchester computer drive technology in a unique peripheral configuration which is fully synchronized to video system timing, provides for flexible formatting, achieves fast random access to a large video image file, and eliminates the need for complex data controllers. The recorder includes two independent actuator and head assemblies for alternately recording successive video fields on separate tracks on separate zones A and B of a disk stack. Movement of one of the actuators and head assemblies is controlled and occurs within a field time to skip tracks containing media flaws to achieve real time digital video recording. The invention bidirectionally receives and transmits data from buses of one size into buses of another size and formats the data into a recordable, compatible format, all under program control. The invention provides unique spindle speed timing acquisition. The invention provides a new circuit for the magnetic read/write head.

Digital formatter, controller, and head assembly for video disk

A real-time magnetic digital video disk recording system has been developed for applications in on-line digital imaging systems and off-line fast access image storage and retrieval buffers. The disk recorder uses new high density recording technology and Winchester computer drive technology in a unique peripheral configuration which is fully synchronized to video system timing, provides for flexible formatting, achieves fast random access to a large video image file, and eliminates the need for complex data controllers. The recorder includes two independent actuator and head assemblies for alternately recording successive video fields on separate tracks on separate zones A and B of a disk stack. Movement of one of the actuators and head assemblies is controlled and occurs within a field time to skip tracks containing media flaws to achieve real time digital video recording. The invention bidirectionally receives and transmits into buses of another size and formats them into recordable, compatible format, as received, and under program control. The invention provides unique spindle speed timing acquisition. The invention provides a new circuit for the magnetic read/write head.

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Torrance, CA, United States of America

Victor E Jo Chiong