Title :
A simplified hardware for adaptive closed caption data slicing
Author :
Leelarasmee, Ekachbi ; Pengwon, Kanitpong
Author_Institution :
Dept. of Electr. Eng., Chulalongkorn Univ., Bangkok, Thailand
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;
Conference_Titel :
TENCON 2003. Conference on Convergent Technologies for the Asia-Pacific Region
Print_ISBN :
0-7803-8162-9
DOI :
10.1109/TENCON.2003.1273422
