Virtual control apparatus for automating video editing stations

Details Virtual control apparatus for automating video editing stations Virtual control apparatus for automating video editing stations

1992-08-04

1993-11-16

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358185, H04N 5222

Patent

active

052628655

ABSTRACT:
A virtual control apparatus for emulating a video mixer through a computer, wherein the computer can receive data and command information from its own command input devices. The data and command information are mapped into data in format recognizable by the CPU within the computer. The resulting data and command are stored in the memory of the computer and/or transferred to the video mixer for immediate video manipulation. Data transfer between the video mixer and the computer is implemented through a communication tool, which establishes the protocol of communication between the computer and the video mixer. Edit decisions from the video mixer can be transferred to and saved in the computer memory for subsequent use. Also disclosed is a video communication tool between a video mixer and a computer. When serial data and control signals are transferred from the video mixer to the computer, serial data are converted into parallel data through a state machine and control logic unit, upon the beginning of a new frame. The parallel data are transferred to a FIFO. Upon the end of frame the FIFO is ported to the computer. When parallel data and control signals are transferred from the computer to the video mixer, parallel data are stored in a FIFO. Upon an appropriate control signal from the state machine, parallel data are converted into serial data. The serial data are clocked to the video mixer on the rising edge of the clock.

REFERENCES:
patent: 4698664 (1987-10-01), Nichols
patent: 4745478 (1988-05-01), Nakagawa
Sony Edit Gear XV-Z10000, Apr. 1989.

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