JPS56166674A - Television ghost eliminator - Google Patents
Television ghost eliminatorInfo
- Publication number
- JPS56166674A JPS56166674A JP7101680A JP7101680A JPS56166674A JP S56166674 A JPS56166674 A JP S56166674A JP 7101680 A JP7101680 A JP 7101680A JP 7101680 A JP7101680 A JP 7101680A JP S56166674 A JPS56166674 A JP S56166674A
- Authority
- JP
- Japan
- Prior art keywords
- memory
- signal
- speed
- low
- stored
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
- H04N5/211—Ghost signal cancellation
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Picture Signal Circuits (AREA)
Abstract
PURPOSE:To simplify a device by temporarily storing the digital waveform of a character broadcast signal, etc., inserted in the vertical flyback time of a TV signal in a memory, by reading it at a low speed, eliminating a ghost in a video period by such as a low-speed automatic equalizer. CONSTITUTION:To a terminal 20, a TV signal after demodulation having an inserted character broadcast signal in a vertical flyback time is inputted and the one- line signal of the input containing a character broadcast is brought under timing control 21 to be stored in an analog memory 22 at a high speed. The signal in the memory 22 is read out at a low speed and inputted to an automatic equalizer 100 to eliminate a ghost; and it is converted A/D-converted at a low speed and stored in a memory 24 as contents Xm. The contents Xm are processed by a convolution arithmetic circuit 26 through a discriminator 27 and correlator 29 to correct a filter coefficient to be stored in a memory 25. As a result, distortion is minimized and an outputted from a terminal 30. The low-speed automatic equalizer like this is used to simplify the device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7101680A JPS56166674A (en) | 1980-05-28 | 1980-05-28 | Television ghost eliminator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7101680A JPS56166674A (en) | 1980-05-28 | 1980-05-28 | Television ghost eliminator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56166674A true JPS56166674A (en) | 1981-12-21 |
JPH0159789B2 JPH0159789B2 (en) | 1989-12-19 |
Family
ID=13448287
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7101680A Granted JPS56166674A (en) | 1980-05-28 | 1980-05-28 | Television ghost eliminator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56166674A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59194580A (en) * | 1983-04-19 | 1984-11-05 | Toshiba Corp | Automatic waveform equalizer |
EP0166555A2 (en) * | 1984-06-15 | 1986-01-02 | Matsushita Electric Industrial Co., Ltd. | Digital data reproducing system |
JPS6218174A (en) * | 1985-07-16 | 1987-01-27 | Matsushita Electric Ind Co Ltd | Method for transmitting and receiving reference signal for ghost elimination |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5470727A (en) * | 1977-11-16 | 1979-06-06 | Toshiba Corp | Television ghost signal erasing device |
-
1980
- 1980-05-28 JP JP7101680A patent/JPS56166674A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5470727A (en) * | 1977-11-16 | 1979-06-06 | Toshiba Corp | Television ghost signal erasing device |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59194580A (en) * | 1983-04-19 | 1984-11-05 | Toshiba Corp | Automatic waveform equalizer |
JPH0523101B2 (en) * | 1983-04-19 | 1993-03-31 | Tokyo Shibaura Electric Co | |
EP0166555A2 (en) * | 1984-06-15 | 1986-01-02 | Matsushita Electric Industrial Co., Ltd. | Digital data reproducing system |
US4673979A (en) * | 1984-06-15 | 1987-06-16 | Matsushita Electric Industrial Co., Ltd. | Digital data reproducing system |
JPS6218174A (en) * | 1985-07-16 | 1987-01-27 | Matsushita Electric Ind Co Ltd | Method for transmitting and receiving reference signal for ghost elimination |
Also Published As
Publication number | Publication date |
---|---|
JPH0159789B2 (en) | 1989-12-19 |
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