參數(shù)資料
型號(hào): LC7442
廠商: Sanyo Electric Co.,Ltd.
英文描述: PIP(Picture in Picture) Controllers(應(yīng)用于電視機(jī)和VCR 畫(huà)中畫(huà)的存儲(chǔ)控制器)
中文描述: 畫(huà)中畫(huà)(畫(huà)中畫(huà))控制器(應(yīng)用于電視機(jī)和錄像機(jī)畫(huà)中畫(huà)的存儲(chǔ)控制器)
文件頁(yè)數(shù): 23/23頁(yè)
文件大?。?/td> 317K
代理商: LC7442
P. 3
Block Diagram
1
2
3
4
A/D converter
Loop filter
Loop filter
Micro-
processor
Input data
timing control
A/D control
Sub-screen PLL
Field
determination
Main screen PLL
Serial data
controller
Vertical filter
(calculation and line memory)
Write address
Read address
Output buffer
Control register
Write data
control
Selector
Memory control
Read data
control
20,21,22
D/A converter
23
Output control
24
Dual port
DRAM:
256 kbytes
or 1 Mbyte
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
D/A converter
D/A converter
P. 4
Component-Type PIP System Structural Diagram
1
A/D clamp
2
Reset
3
Main vertical synchronization
4
Main horizontal synchronization
5
Sub-screen vertical synchronization
6
Sub-screen horizontal synchronization
7
Micro-
processor
8
Dual port RAM
9
Main/sub switching (blanking)
10 Frame
P. 7
Function Descriptions
(1)
Main screen
(2)
Or:
P. 8
Frame control
(6)
1
Sub-screen
Sub-screen
(7)
1
There are 4 wipe types.
2
An operating time of about 1.0 seconds.
3
V wipe
4
H wipe
5
VH wipe
6
D wipe
7
Off
Off
Off
Off
LC7442
No. 4412-23/12
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