JPS54100201A - Field intensity discrimination device - Google Patents
Field intensity discrimination deviceInfo
- Publication number
- JPS54100201A JPS54100201A JP680578A JP680578A JPS54100201A JP S54100201 A JPS54100201 A JP S54100201A JP 680578 A JP680578 A JP 680578A JP 680578 A JP680578 A JP 680578A JP S54100201 A JPS54100201 A JP S54100201A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- field intensity
- input
- circuit
- output
- 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 ensure the discrimination for the input field intensity from the weak input to the intermediate input for the field intensity discrimination device which is used for the automatic channel selection of the TV picture receiver, by utilizing the changing part of both the IFAGC voltage and the detection output of the video detector circuit.
CONSTITUTION: The voltage which gave the peak detection to the detection output of video detector circuit 1 and the AGC voltage given from IFAGC circuit 7 are applied to different voltage comparator 4 and 8, and receive application of the reference voltage in common from variable resistor 5. The reference voltage to be applied to comparator 4 and 8 is varied by resistor 5, and these output voltage are drawn out to output terminal 6 via the OR circuit consisting of diode 9 and 10. Thus, the input field intensity can be discriminated from the weak input to the intermediate input.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP680578A JPS54100201A (en) | 1978-01-24 | 1978-01-24 | Field intensity discrimination device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP680578A JPS54100201A (en) | 1978-01-24 | 1978-01-24 | Field intensity discrimination device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54100201A true JPS54100201A (en) | 1979-08-07 |
JPS5756970B2 JPS5756970B2 (en) | 1982-12-02 |
Family
ID=11648399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP680578A Granted JPS54100201A (en) | 1978-01-24 | 1978-01-24 | Field intensity discrimination device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54100201A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57112125A (en) * | 1980-12-29 | 1982-07-13 | Seiko Epson Corp | Broadcast receiver |
JPS61195632U (en) * | 1985-05-29 | 1986-12-05 | ||
JPH0230641U (en) * | 1989-06-12 | 1990-02-27 |
-
1978
- 1978-01-24 JP JP680578A patent/JPS54100201A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57112125A (en) * | 1980-12-29 | 1982-07-13 | Seiko Epson Corp | Broadcast receiver |
JPH0322095B2 (en) * | 1980-12-29 | 1991-03-26 | Seiko Epson Corp | |
JPS61195632U (en) * | 1985-05-29 | 1986-12-05 | ||
JPH0311950Y2 (en) * | 1985-05-29 | 1991-03-22 | ||
JPH0230641U (en) * | 1989-06-12 | 1990-02-27 |
Also Published As
Publication number | Publication date |
---|---|
JPS5756970B2 (en) | 1982-12-02 |
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