A simplified hardware for adaptive closed caption data slicing

Author

Leelarasmee, Ekachbi ; Pengwon, Kanitpong

Author_Institution

Dept. of Electr. Eng., Chulalongkorn Univ., Bangkok, Thailand

Volume

3

fYear

2003

fDate

15-17 Oct. 2003

Firstpage

1127

Abstract

A CMOS shift register is used to slice and store the closed caption data from the NTSC line 21 video signals, which is adaptively shifted by the DC output of a pulse width modulator. The adaptive data slicing algorithm is achieved with the use of a high speed microcontroller. Using these two simple digital devices, a prototype general RISC microcontroller that can be used to control all functions of a closed caption TV receiver is constructed without the need for dedicated hardware.

Keywords

CMOS logic circuits; data communication; field programmable gate arrays; microcontrollers; pulse width modulation; reduced instruction set computing; shift registers; television receivers; video signal processing; CMOS shift register; DC output; RISC microcontroller; TV receiver; adaptive closed caption data slicing; adaptive data slicing algorithm; dedicated hardware; digital devices; pulse width modulator; reduced instruction set computer; video signals; Blanking; CMOS digital integrated circuits; Digital circuits; Hardware; Microcontrollers; Pulse width modulation; Shift registers; Space vector pulse width modulation; TV receivers; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

TENCON 2003. Conference on Convergent Technologies for the Asia-Pacific Region

Print_ISBN

0-7803-8162-9

Type

conf

DOI

10.1109/TENCON.2003.1273422

Filename

1273422