Title :
Multi scanning TV processor IC
Author :
Berland, P.A. ; Berger, Ph ; Rufray, J.C.
Author_Institution :
Thomson Consumer Electron. Res. & Dev. Lab., Strasbourg, France
fDate :
8/1/1989 12:00:00 AM
Abstract :
A novel concept for a microprocessor-controlled deflection processor intended for a microprocessor-controlled TV receiver or monitor is described. This concept is implemented in an IC providing horizontal and vertical control signals, switched-mode power supply (SMPS) control pulses, and the usual identification or synchronization signals. This IC receives standard TV video signals at 16 kHz, 50/60 Hz and delivers line, field, and SMPS drive signals at the same frequency or at the doubled frequency 32 kHz, 50/60 Hz or 100/120 Hz. Doubling of line and/or field frequency is necessary in double-scanning or flicker-free TV concepts. The setting of picture geometry parameters and SMPS adjustment is accomplished by a microprocessor over a bus. This approach greatly reduces component count
Keywords :
colour television receivers; computerised picture processing; digital signal processing chips; microprocessor chips; telecommunications computer control; video signals; 100 Hz; 120 Hz; 16 kHz; 32 kHz; 50 Hz; 60 Hz; SMPS; bus; control pulses; field frequency; flicker-free TV; horizontal control signals; identification signal; microprocessor-controlled TV receiver; microprocessor-controlled deflection processor; monitor; multiscanning TV processor IC; picture geometry parameters; standard TV video signals; switched-mode power supply; synchronization signals; vertical control signals; Frequency synchronization; Microprocessors; Pulse circuits; Pulse generation; Pulse width modulation; Signal generators; Signal processing; Switched-mode power supply; TV; Timing;
Journal_Title :
Consumer Electronics, IEEE Transactions on
