ICs for VCR AN3275SB CM detection IC for VCRs in the North American market s Overview The AN3275SB is an IC which detects both a low luminance of video signal and a low sound amplitude based on that is ADLE Inc.
's patent of the CM detection technology.
Using this IC and a free memory area in a microcomputer, you can easily carry out a CM detection for VCRs used in the North America.
s Features • Video black detection • Low sound detection • Generation of various masking pulses (Detecting H-mask, V-mask and envelope) • Generation of the pulse (CLR pulse) for an event latch • Usable for COMMERCIAL ADVANCE, MOVIE AD- VANCE and CA-LITE s Applications • Stand-alone VCR s Block Diagram...

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