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參數(shù)資料
| 型號： | GS4981-CTA |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Monolithic Video Sync Separators |
| 中文描述： | 單片視頻同步分離器 |
| 文件頁數(shù)： | 14/14頁 |
| 文件大小： | 279K |
| 代理商： | GS4981-CTA |
14
520 - 23 - 03
COMPOSITE
VIDEO INPUT
525 1 2 3 4 5 6 7 8
HORIZONTAL OUTPUT
GS4981
VERTICAL SYNC OUTPUT
GS4981
ODD/EVEN OUTPUT
START OF ODD FIELD
COMPOSITE
VIDEO INPUT
HORIZONTAL
GS4981
ODD/EVEN OUTPUT
VERTICAL SYNC OUTPUT
GS4981
START OF EVEN FIELD
263 264 265 266 267 268 269 270
(3) Deriving Odd/Even Using the GS4981
Odd/even field information can be derived using the vertical
and horizontal outputs from the GS4981 along with an external
positive edge D flip/flop. The horizontal output is used
as the D input and the vertical output as the clock, as
shown in Figure 27.
Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement.
Copyright March 1991 Gennum Corporation. All rights reserved. Printed in Canada.
DOCUMENT
IDENTIFICATION
PRODUCT PROPOSAL
This data has been compiled for market investigation purposes
only, and does not constitute an offer for sale.
ADVANCE INFORMATION NOTE
This product is in development phase and specifications are
subject to change without notice. Gennum reserves the right to
remove the product at any time. Listing the product does not
constitute an offer for sale.
PRELIMINARY
The product is in a preproduction phase and specifications are
subject to change without notice.
DATA SHEET
The product is in production. Gennum reserves the right to
make changes at any time to improve reliability, function or
design, in order to provide the best product possible.
5 - 12V
1
2
3
4
5
6
7
8
V
CC
BACK PORCH
OUTPUT
0.1μF
COMPOSITE
SYNC OUTPUT
COMPOSITE
VIDEO INPUT
VERTICAL
SYNC OUTPUT
HORIZONTAL
0.1μF
RSET
680k
GS4981
D FLIP/FLOP
ODD/EVEN
OUTPUT
V
CLK Q
D Q
At the start of an odd field the vertical output ends in the middle
of the horizontal line and a high will be latched. At the start of
an even field, the vertical output ends near the beginning of
the horizontal line and since the horizontal output is low, a low
will be latched. This timing sequence is shown in Figure 28.
Fig. 27 Derivation of Odd/Even with GS4981
Fig. 28 Timing Diagram
REVISION NOTES
The only change from 520-23-02 to 520-23-03 is that the document has been
upgraded to a full DATA SHEET. It is no longer Preliminary.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| GS4981-IDA | Monolithic Video Sync Separators |
| GS4981-IKA | Monolithic Video Sync Separators |
| GS4981-ITA | Monolithic Video Sync Separators |
| GS1881 | Monolithic Video Sync Separators |
| GS1881-CDA | Monolithic Video Sync Separators |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| GS4981-CTAE3 | 制造商:Semtech Corporation 功能描述:TAPE & REEL Sync Separators |
| GS4981-IDA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Gennum Corporation 功能描述: |
| GS4981-IKA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Gennum Corporation 功能描述: |
| GS4981-IKAE3 | 制造商:Semtech Corporation 功能描述:Sync Separators |
| GS4981ITA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
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