JPS558181A - Channel program device - Google Patents
Channel program deviceInfo
- Publication number
- JPS558181A JPS558181A JP8178678A JP8178678A JPS558181A JP S558181 A JPS558181 A JP S558181A JP 8178678 A JP8178678 A JP 8178678A JP 8178678 A JP8178678 A JP 8178678A JP S558181 A JPS558181 A JP S558181A
- Authority
- JP
- Japan
- Prior art keywords
- memory
- channel
- broadcast signal
- local oscillation
- oscillation frequency
- 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
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
PURPOSE: To secure an automatic memorization the tuning data corresponding to the transmission signal channel and the tuning data of the fixed channel where no broadcast signal exists by installing the detecting means to detect that the local oscillation frequency fratures the prescribed value and that the broadcast signal exists.
CONSTITUTION: When search start switch SW2 is turned on, the tuning voltage codes corresponding to all receivable broadcast stations are written automatically into station memory 3. The frequency code preset via channel frequency memory 18 is compared with the bit number corresponding to the value obtained by dividing 12 the local oscillation frequency of tuner 11 at comparator counter 17, and the local oscillation frequency is changed to the normal value via decision circuit 20 and station counter 6 to produce signal P2. At the same time, the tuning voltage data is written into memory 3 via detection signal P5 and P2 detecting the presence or absence of the broadcast signal through broadcast signal detection circuit 30. In case no broadcast signal exists, it is memorized in user-use channel detection memory unit 31, and the tuning data of the channel is memorized in memory 3 via unit 31 to be then used for VTR or the like.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8178678A JPS6021486B2 (en) | 1978-07-05 | 1978-07-05 | channel programming device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8178678A JPS6021486B2 (en) | 1978-07-05 | 1978-07-05 | channel programming device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS558181A true JPS558181A (en) | 1980-01-21 |
JPS6021486B2 JPS6021486B2 (en) | 1985-05-28 |
Family
ID=13756159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8178678A Expired JPS6021486B2 (en) | 1978-07-05 | 1978-07-05 | channel programming device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6021486B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0325332A2 (en) * | 1988-01-22 | 1989-07-26 | Philips Electronics Uk Limited | Video signal recorder/player devices |
EP1026892A1 (en) * | 1999-02-03 | 2000-08-09 | Pace Micro Technology PLC | Vacant broadcast channel searching system |
-
1978
- 1978-07-05 JP JP8178678A patent/JPS6021486B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0325332A2 (en) * | 1988-01-22 | 1989-07-26 | Philips Electronics Uk Limited | Video signal recorder/player devices |
EP1026892A1 (en) * | 1999-02-03 | 2000-08-09 | Pace Micro Technology PLC | Vacant broadcast channel searching system |
Also Published As
Publication number | Publication date |
---|---|
JPS6021486B2 (en) | 1985-05-28 |
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