System for controlling continuous data input of an optical disk

Details System for controlling continuous data input of an optical disk System for controlling continuous data input of an optical disk

1991-03-13

1993-12-28

Chun, Debra A.

Boots, shoes, and leggings

364DIG1, 3642362, 3642383, 3642391, 3642494, 3642397, 3642719, G06F 506

Patent

active

052747646

ABSTRACT:
A continuous data input control system for an optical disk comprising an optical disk digital signal processor for outputting serial data, beat clock signal and left/right clock signal, an optical disk ROM decoder for decoding and transmitting the data from the processor, a microprocessor for controlling the whole system, and a data input controller for controlling the output of the digital signal processor. The data input controller includes a clock generator, a counter, a first control signal generator, an AND gate, a stop point detector for shifting the serial data of the digital signal processing unit by synchronization with the clock pulse signal of an AND gate, for latching the data when the buffer RAM is in the overflow state in response to the output level of the control signal generating unit, and for detecting the data of the stop point by comparing the latched data with the data being presently inputted, when the overflow of the buffer RAM is released. It also includes a second control signal generator, and a switching unit.
By these arrangements, digital audio data on the optical disk can be reinputted from the data input stop point after the data input operation is stopped due to a buffer overflow.

REFERENCES:
patent: 4835757 (1989-05-01), Abiko
patent: 4841513 (1989-06-01), Hassan et al.
patent: 4956808 (1990-09-01), Aakre et al.
patent: 4974197 (1990-11-01), Blount et al.
patent: 5034914 (1991-07-01), Osterlund
IBM Technical Disclosure Bulletin; vol. 22, No. 1, Jun. 1979, New York, J. Pertzborn: "Buffer Overrun Detection" pp. 299-301.

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