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Service Manual CP-785F
4 - IC description
4-1 TDA936x TV signal processor - Teletext decoder with embedded -Controller.
- TDA936x : TEXT Available
CHASSIS(MODELS)
IC MARKING
TEXT
TV STANDARD
CP-785F
TDA9365
10 PAGE TEXT
(DTE-29U1TH)
(DW9365/N2)
(Pan-Eur opeun)
PLA/SECAM
(PF-68T32)
(DW9365/CH3)
TV-signal Processor
Multi-standard vision IF circuit with alignment-free PLL demodulator
Internal (switchable) time-constant for the IF-AGC circuit
Source selection between ’Internal’ CVBS and external CVBS or Y/C signals
Integrated chrominance trap circuit
Integrated luminance delay line with adjustable delay time
Asymmetrical delay line type peaking in the luminance channel
Black stretching for non-standard luminance signals
lntegrated chroma band-pass filter with switchable centre frequency
Only one reference (12 MHz) crystal required for the -Controller, Teletext and the colour
decoder
PAL / NTSC or multistandard colour decoder with automatic search system
Internal base-band delay line
RGB control circuit with ’Continuous Cathode Calibration’, white point and black level off set
adjustment so that the colour temperature of the dark and the bright parts of the screen can
be chosen independently.
The Text/OSD signals are internally supplied from the -Controller/Teletext decoder
Contrast reduction possibility during mixed-mode of OSD and Text signals
Horizontal synchronisation with two control loops and alignment-free horizontal oscillator
Vertical count-down circuit
Vertical driver optimised for DC-coupled vertical output stages
Horizontal and vertical geometry processing
Horizontal and vertical zoom function for 16 : 9 applications
Horizontal parallelogram and bow correction for large screen picture tubes
Содержание DTE-29U1TH
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Страница 71: ...NEC Corporation 7 1 SHIBA 5 CHOME MINATO KU TOKYO 108 8001 JAPAN ...