JPS5511629A - Automatic tuning device - Google Patents
Automatic tuning deviceInfo
- Publication number
- JPS5511629A JPS5511629A JP8404078A JP8404078A JPS5511629A JP S5511629 A JPS5511629 A JP S5511629A JP 8404078 A JP8404078 A JP 8404078A JP 8404078 A JP8404078 A JP 8404078A JP S5511629 A JPS5511629 A JP S5511629A
- Authority
- JP
- Japan
- Prior art keywords
- oscillation frequency
- local oscillation
- point
- malfunction
- frequency control
- 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
- Circuits Of Receivers In General (AREA)
- Television Receiver Circuits (AREA)
Abstract
PURPOSE: To secure the normal operation even in case the power switch is made in the state under which the lower adjacent signal exists, by installing the malfunction preventing circuit in the automatic tuning device.
CONSTITUTION: When the power switch is made, the local oscillation frequency of tuner part 1 is controlled to point (b) distant away from the reference local oscillation frequency by fL. While for DC power source 7A of malfunction circuit 7, voltage VH is applied to the local oscillation frequency control element of part 1 by connecting terminal 6 to 7B for an extremely short time after making of the power source. Thus 7A shifts instantaneously to point (d) of the local oscillation frequency opposing to VH. Then 7A is released by connecting terminal 6 to terminal 4 and then reset to the normal circuit comprising turner part 1, video IF amplification part 2 and local oscillation frequency control part 3. In this case, the voltage applied to the local oscillation frequency control element of part 1 lowers down from point (d) on characteristic curve L1 and then controlled to point (e), thus preventing the malfunction.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8404078A JPS5511629A (en) | 1978-07-12 | 1978-07-12 | Automatic tuning device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8404078A JPS5511629A (en) | 1978-07-12 | 1978-07-12 | Automatic tuning device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5511629A true JPS5511629A (en) | 1980-01-26 |
Family
ID=13819393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8404078A Pending JPS5511629A (en) | 1978-07-12 | 1978-07-12 | Automatic tuning device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5511629A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4386020A (en) * | 1979-05-10 | 1983-05-31 | Max Planck Gesellschaft Zur Forderung Der Wissenschaften E.V. | Process for the production of thermodynamically stable solid ion conductor materials |
JPS5972073U (en) * | 1982-11-02 | 1984-05-16 | ソニー株式会社 | television receiver |
JPS6183348U (en) * | 1984-11-07 | 1986-06-02 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50146216A (en) * | 1974-05-14 | 1975-11-22 | ||
JPS516026U (en) * | 1974-06-29 | 1976-01-17 |
-
1978
- 1978-07-12 JP JP8404078A patent/JPS5511629A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50146216A (en) * | 1974-05-14 | 1975-11-22 | ||
JPS516026U (en) * | 1974-06-29 | 1976-01-17 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4386020A (en) * | 1979-05-10 | 1983-05-31 | Max Planck Gesellschaft Zur Forderung Der Wissenschaften E.V. | Process for the production of thermodynamically stable solid ion conductor materials |
JPS5972073U (en) * | 1982-11-02 | 1984-05-16 | ソニー株式会社 | television receiver |
JPS6183348U (en) * | 1984-11-07 | 1986-06-02 | ||
JPH0221819Y2 (en) * | 1984-11-07 | 1990-06-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5617506A (en) | Digital type gain control device | |
JPS54102477A (en) | Sequence controller output device | |
JPS54154922A (en) | Television tuner circuit | |
JPS5511629A (en) | Automatic tuning device | |
JPS5534507A (en) | Electronic tuning television picture receiver | |
JPS5438701A (en) | Automatic channel selector for electronic tuner | |
JPS5525279A (en) | Automatic frequency tuning defeat device | |
ES8104695A1 (en) | Surveillance circuitry for an input voltage. | |
JPS5492358A (en) | Electronic watch | |
JPH06236225A (en) | Electronic equipment | |
JPS5684074A (en) | Antenna mixer | |
JPS55126862A (en) | Frequency-voltage converting circuit | |
JPS56117659A (en) | Discharge piercing-type plate making machine | |
JPS55143821A (en) | Automatic frequency control unit | |
JPS54137228A (en) | Protective circuit for horizontal circuit of television picture receiver | |
JPS5467309A (en) | Aft circuit | |
JPS5737980A (en) | Automatic tuning circuit | |
JPS5567223A (en) | Electronic tuning unit | |
JPS54115749A (en) | Source voltage monitor | |
JPS57186822A (en) | Automatic channel searching device | |
JPS5563927A (en) | Wire breaking detector for lamp | |
JPS5562573A (en) | Picture recording and reproducing device | |
JPS53117929A (en) | Power circuit | |
JPS553269A (en) | Afc device | |
JPS5278312A (en) | Automatic frequency control circuit |