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.
Unit: mm
15.2±0.3
36
19
0.2
–0.05
+0.10
8.4±0.3
11.93±0.3
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
1
18
1.30±0.25
1.30±0.25
0.3±0.11
0.8
Seating plane
SSOP036-P-0450A
s
Applications
•
Stand-alone VCR
s
Block Diagram
CA/MA SEL
ENVH DET
17
20
ENV ADJ.
ENVL DET
18
19
MA V LEV
CA V LEV
SYNC FIL
MA V FIL
CA V FIL
VS OUT
CL CAP
C TRAP
V DET
VMW
0.1±0.1
36
35
33
32
31
30
29
28
27
26
25
24
23
22
34
MA
CA
Clamp
LPF
Clamp
BP
Counter
Video 1
Latch 2
MM1
V-DL
MM2
V-WID
V mask
ENV mask
Amp.
Sync.
sepa.
Black video
detect
V-sync.
sepa.
E/V mask
H mask
MM3
H-DL
MM4
H-WD
LPF3
E/V mask
V mask H mask
Amp. 2
Non-audio
detect
MA
Audio 1
Latch 2
CA
MA
Counter
E/V mask
Mix.
13
14
15
ENV detector
16
CA
10
11
HMW
RA IN
PA IN
MA V LEV
MA A FIL
CA A FIL
CA A LEV
A DET
CLR IN
12
1
2
3
4
5
6
7
8
9
CLR OUT
ENV DET
PB FM IN
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.
HSW IN
V
CC
21
VMD
GND
V IN
N.C.
2.85±0.2
0.5
1
PANASONIC [ PANASONIC SEMICONDUCTOR ]
