JPS54105922A - Television picture receiving system - Google Patents
Television picture receiving systemInfo
- Publication number
- JPS54105922A JPS54105922A JP1241478A JP1241478A JPS54105922A JP S54105922 A JPS54105922 A JP S54105922A JP 1241478 A JP1241478 A JP 1241478A JP 1241478 A JP1241478 A JP 1241478A JP S54105922 A JPS54105922 A JP S54105922A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- supplied
- oscillator
- ifamp3
- 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
- Television Receiver Circuits (AREA)
Abstract
PURPOSE: To improve the linearity of the video signal component by securing a circuit constitution which is suited to form a semiconductor monolithic integrated circuit for the tuning circuit of the TV picture receiver and thus realizing an automatic fine adjustment and random channel selection.
CONSTITUTION: The voltage control oscillator circuit 6 and 6' which form a local oscillator circuit is provided along with high-frequency amplifier circuit 1 and mixer circuit 2. Then the control signal of the PLL circuit is supplied to circuit 6 and 6'. The PLL circuit comprises program devider 9 which is controlled based on the channel information of the digital value, 1st phase detector circuit 10 which supplies the input of divider 9 and the signal of reference signal oscillator 13 via divider 12, and 2nd phase detector circuit 11 which supplies the output of IFAMP3 and oscillator 13 with the output of circuit 10 used as the input. Then the output of FRAMP1 and circuit 6 and 6' is supplied to circuit 2 via frequency multiplying circuit 5 and 5'; the output of IFAMP3 and phase control circuit 15 is supplied to video detector circuit 4; and the output of circuit 4 is supplied to jungle circuit 16.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1241478A JPS54105922A (en) | 1978-02-08 | 1978-02-08 | Television picture receiving system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1241478A JPS54105922A (en) | 1978-02-08 | 1978-02-08 | Television picture receiving system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54105922A true JPS54105922A (en) | 1979-08-20 |
Family
ID=11804595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1241478A Pending JPS54105922A (en) | 1978-02-08 | 1978-02-08 | Television picture receiving system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54105922A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5119468A (en) * | 1974-08-09 | 1976-02-16 | Hitachi Ltd | DOKIKENPA SOCHI |
JPS52105714A (en) * | 1976-02-27 | 1977-09-05 | Rca Corp | Twoomode frequency synthesizer for television tuner |
-
1978
- 1978-02-08 JP JP1241478A patent/JPS54105922A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5119468A (en) * | 1974-08-09 | 1976-02-16 | Hitachi Ltd | DOKIKENPA SOCHI |
JPS52105714A (en) * | 1976-02-27 | 1977-09-05 | Rca Corp | Twoomode frequency synthesizer for television tuner |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5321852A (en) | Circuit and method for converting a radio frequency signal into a baseband signal | |
EP0124332A3 (en) | A double conversion tuner | |
ES485498A1 (en) | Aft circuit | |
JPS5564477A (en) | Television receiver | |
CA1041237A (en) | Electronic system for automatically tuning to a selected television channel | |
NO845128L (en) | VOTING SYSTEM FOR TELECOMMUNICATIONS TECHNOLOGY DEVICES | |
CA1151328A (en) | Aft arrangement for a phase locked loop tuning system | |
JPS54105922A (en) | Television picture receiving system | |
US4249259A (en) | Digital channel selection apparatus | |
US3944931A (en) | Multi-channel frequency converter having automatic control | |
US4320533A (en) | Frequency stabilized downconverter facilitating output frequency alteration | |
JPS5883446A (en) | Receiver | |
US4158211A (en) | Automatic frequency control apparatus for television receiver | |
US3073895A (en) | Television receiver having fine tuning apparatus | |
JPS5879325A (en) | Tuner and its adjusting method | |
JPS5451715A (en) | Channel selector | |
JPS6136427B2 (en) | ||
JPS57193132A (en) | Television channel selecting device | |
JPS6136426B2 (en) | ||
JPS5560390A (en) | Color television receiver | |
JPS57193131A (en) | Television channel selecting device | |
JPH05183905A (en) | Local oscillator/frequency mixer integrated circuit for tuner | |
JPS5592081A (en) | Adjustment unit of television receiver | |
JPS55161415A (en) | Tuner | |
JPS5560389A (en) | Color television receiver |