AN3275SB Datasheet, PDF (1/15 Pages) Panasonic Semiconductor – CM detection IC for VCRs in the North American market

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
15.2±0.3
36
19
Unit: mm
0.2^{+–00..0150}
1
18
1.30±0.25
1.30±0.25
0.3±0.11
0.8
Seating plane
SSOP036-P-0450A
Clamp
LPF
H mask
Amp. 2
MA
CA
Counter
Clamp
Amp.
Black video
detect
Video 1
Latch 2
BP
MM3
H-DL
Sync.
sepa.
MM4
H-WD
LPF3
V mask _{H mask}
Non-audio
detect
V-sync.
sepa.
E/V mask
Audio 1
Latch 2
MM1
V-DL
E/V mask
MM2
V-WID
V mask
MA
CA
CA
ENV mask
Counter Mix.
MA
E/V mask
ENV detector
Note)
is a trademark registered by SRT, Inc., invented by Jerry Iggulden who closed a licensing contract under
the cooperation of Arthur D. Little Enterprises, Inc.
1