JPS6473870A - Input signal selecting device - Google Patents
Input signal selecting deviceInfo
- Publication number
- JPS6473870A JPS6473870A JP23017787A JP23017787A JPS6473870A JP S6473870 A JPS6473870 A JP S6473870A JP 23017787 A JP23017787 A JP 23017787A JP 23017787 A JP23017787 A JP 23017787A JP S6473870 A JPS6473870 A JP S6473870A
- Authority
- JP
- Japan
- Prior art keywords
- video signal
- external video
- input terminal
- separated
- input
- 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.)
- Granted
Links
Abstract
PURPOSE:To improve the workability and the operability of a device, by constituting a device so that a first external video signal input terminal is separated automatically by connecting the output terminal of an external video signal to a second external video signal input terminal, and a second external video signal can be supplied to a cathode-ray tube. CONSTITUTION:By connecting the output terminal of an AV selector to a second input terminal 14, first input terminals 1a-1d are separated from a video signal processing circuit 9, and the second external video signal is supplied to the video signal processing circuit 9, and is displayed on the cathode-ray tube 10. Meanwhile, at this time, a resistor 21 is separated from a resistor 15 by opening between contacts 14a and 14b, then, a transistor 19 is energized. As a result, the collector potential of the transistor is set a low level, thereby, a microcomputer 23 detects the connection of the input to the second input terminal, and performs the same on-screen display as the above. Even when a signal to be switched to a changeover switch 2 is issued from a remote control transmitter, its output signal is not issued, and no switching of the change-over switch 2 occurs.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23017787A JP2563372B2 (en) | 1987-09-14 | 1987-09-14 | Input signal selector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23017787A JP2563372B2 (en) | 1987-09-14 | 1987-09-14 | Input signal selector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6473870A true JPS6473870A (en) | 1989-03-20 |
JP2563372B2 JP2563372B2 (en) | 1996-12-11 |
Family
ID=16903812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23017787A Expired - Lifetime JP2563372B2 (en) | 1987-09-14 | 1987-09-14 | Input signal selector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2563372B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0172777U (en) * | 1987-11-02 | 1989-05-16 |
-
1987
- 1987-09-14 JP JP23017787A patent/JP2563372B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0172777U (en) * | 1987-11-02 | 1989-05-16 |
Also Published As
Publication number | Publication date |
---|---|
JP2563372B2 (en) | 1996-12-11 |
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