JPS5451320A - Television receiver capable of automatic reception of broadcast different in number of scanning lines - Google Patents
Television receiver capable of automatic reception of broadcast different in number of scanning linesInfo
- Publication number
- JPS5451320A JPS5451320A JP11661077A JP11661077A JPS5451320A JP S5451320 A JPS5451320 A JP S5451320A JP 11661077 A JP11661077 A JP 11661077A JP 11661077 A JP11661077 A JP 11661077A JP S5451320 A JPS5451320 A JP S5451320A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- systems
- television receiver
- scanning lines
- separator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Details Of Television Scanning (AREA)
Abstract
PURPOSE: To enable a method to receive both E and L systems through automatic switching to receiver circuits appropriate for both the systems, by detecting the difference between both vertical synchronizing signals obtained from sychronizing separator cuircuits on both the E and L systems.
CONSTITUTION: A synchronizing signal from the synchronizing separator circuit, inputted to terminal 10, is applied to transistor 5 via integrating circuit 13, rectifier circuit 16 and amplifier 4, thereby driving system switching relay 7. Here, the vertical synchronizing signal from the synchronizing separator circuit gains its width of approximate 20μs on the E system, but extremely large its width of 16μs on the L system, so that a voltage integrated and rectified by integrating circuit 13 and rectifier circuit 16 will be small on the E system and extremely large on the L system. This difference is used for turning ON-OFF transistor 5 so as to control relay 6, thereby achieving the alternation between L-system exclusively-used circuit 8 and E-system exclusively-used circuit 9
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11661077A JPS5451320A (en) | 1977-09-30 | 1977-09-30 | Television receiver capable of automatic reception of broadcast different in number of scanning lines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11661077A JPS5451320A (en) | 1977-09-30 | 1977-09-30 | Television receiver capable of automatic reception of broadcast different in number of scanning lines |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5451320A true JPS5451320A (en) | 1979-04-23 |
Family
ID=14691421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11661077A Pending JPS5451320A (en) | 1977-09-30 | 1977-09-30 | Television receiver capable of automatic reception of broadcast different in number of scanning lines |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5451320A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58178775U (en) * | 1982-05-26 | 1983-11-30 | 日立電子株式会社 | video monitor |
JPS59148468A (en) * | 1983-02-15 | 1984-08-25 | Nippon Telegr & Teleph Corp <Ntt> | Video reproducing device |
-
1977
- 1977-09-30 JP JP11661077A patent/JPS5451320A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58178775U (en) * | 1982-05-26 | 1983-11-30 | 日立電子株式会社 | video monitor |
JPS59148468A (en) * | 1983-02-15 | 1984-08-25 | Nippon Telegr & Teleph Corp <Ntt> | Video reproducing device |
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