New software servo system with a single-chip microprocessor for VCRs

Author

Tomitaka, Tadafusa ; Kikuchi, Akihiro ; Yanai, Mamiko ; Takada, Shinji ; Machida, Yukihiko

Author_Institution

Sony Corp., Tokyo, Japan

Volume

34

Issue

3

fYear

1988

fDate

8/1/1988 12:00:00 AM

Firstpage

571

Lastpage

579

Abstract

A video cassette recorder (VCR) servosystem was designed using th integral optimal regulator technique of modern control theory. The servosystem is optimized such that quantization noise in digital processing of the VCR signal is small and the accuracy of the frequency generator for the dynamic random-access memory (DRAM) speed sensor is kept at a certain value. The resulting optimized design was used to implement a system controller that incorporates an 8 bit single-chip microprocessor.

Keywords

microprocessor chips; optimal control; servomechanisms; telecommunications computer control; video tape recorders; 8 bit; DRAM; VCR signal; VCRs; control theory; digital processing; dynamic random-access memory; frequency generator; integral optimal regulator; quantization noise; single-chip microprocessor; software servo system; speed sensor; system controller; video cassette recorder; Control theory; Microprocessors; Noise generators; Quantization; Regulators; Servomechanisms; Servosystems; Signal processing; Software systems; Video recording;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.20156

Filename

20156