JPS56102180A - Picture signal encoding system - Google Patents
Picture signal encoding systemInfo
- Publication number
- JPS56102180A JPS56102180A JP357980A JP357980A JPS56102180A JP S56102180 A JPS56102180 A JP S56102180A JP 357980 A JP357980 A JP 357980A JP 357980 A JP357980 A JP 357980A JP S56102180 A JPS56102180 A JP S56102180A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- picture signal
- picture
- period
- movement
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N11/00—Colour television systems
- H04N11/04—Colour television systems using pulse code modulation
- H04N11/042—Codec means
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Color Television Systems (AREA)
Abstract
PURPOSE:To make it possible to obtain pictures with high quality and less distortion by attaching a movement detecting circuit which detects the movement of picture signals when they are encoded. CONSTITUTION:Color subcarrier SC of an input picture signal is entered into clock generator 33 and, after A/D converting the picture signal with a clock signal whose frequency is 4 times larger than that of SC in A/D converter 34 to perform preparatory encoding, the converted picture signal is entered into prefilter 36. The output of filter 36 is sampled with the 1/2 frequency of the clock signal and the phase of the sampling signal is reversed in every period corresponding to integer times of horizontal scanning period h to transmit the sampling signal. In the receiving side, the input signal is preencoded by interpolating filter 39 to decode the picture signal. Filter 39 compares the sampling picture signal with the picture signal delayed by the integer times of the field period. When picture movement is detected by picture movement detecting circuit 43, switch 49 is connected to the b side, the high component is interpolated with the high component of the picture signal generated before the integer time of period h and the low component is interpolated with the low component of the neighboring picture signal in the same horizontal period.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP357980A JPS56102180A (en) | 1980-01-18 | 1980-01-18 | Picture signal encoding system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP357980A JPS56102180A (en) | 1980-01-18 | 1980-01-18 | Picture signal encoding system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56102180A true JPS56102180A (en) | 1981-08-15 |
Family
ID=11561356
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP357980A Pending JPS56102180A (en) | 1980-01-18 | 1980-01-18 | Picture signal encoding system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56102180A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS604383A (en) * | 1983-06-22 | 1985-01-10 | Matsushita Electric Ind Co Ltd | Digital magnetic recorder and reproducer of television signal |
JPS6152098A (en) * | 1984-08-22 | 1986-03-14 | Nec Corp | Color television signal transmitting device |
US4745459A (en) * | 1983-10-19 | 1988-05-17 | Nippon Hoso Kyokai | Divisionally time-compressed subsample transmission and motion-compensated reproduction system for a high definition color television picture signal |
US4989091A (en) * | 1988-11-16 | 1991-01-29 | Scientific-Atlanta, Inc. | Scan converter for a high definition television system |
US5053859A (en) * | 1987-09-02 | 1991-10-01 | Scientific-Atlanta, Inc. | High definition B-MAC television signal transmission system |
US5119197A (en) * | 1990-03-22 | 1992-06-02 | Pioneer Electronic Corporation | Cyclic noise-reducing apparatus |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5353218A (en) * | 1976-10-25 | 1978-05-15 | Nippon Telegr & Teleph Corp <Ntt> | Interpolation system for color television signal sample value |
-
1980
- 1980-01-18 JP JP357980A patent/JPS56102180A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5353218A (en) * | 1976-10-25 | 1978-05-15 | Nippon Telegr & Teleph Corp <Ntt> | Interpolation system for color television signal sample value |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS604383A (en) * | 1983-06-22 | 1985-01-10 | Matsushita Electric Ind Co Ltd | Digital magnetic recorder and reproducer of television signal |
US4745459A (en) * | 1983-10-19 | 1988-05-17 | Nippon Hoso Kyokai | Divisionally time-compressed subsample transmission and motion-compensated reproduction system for a high definition color television picture signal |
JPS6152098A (en) * | 1984-08-22 | 1986-03-14 | Nec Corp | Color television signal transmitting device |
US5053859A (en) * | 1987-09-02 | 1991-10-01 | Scientific-Atlanta, Inc. | High definition B-MAC television signal transmission system |
US4989091A (en) * | 1988-11-16 | 1991-01-29 | Scientific-Atlanta, Inc. | Scan converter for a high definition television system |
US5119197A (en) * | 1990-03-22 | 1992-06-02 | Pioneer Electronic Corporation | Cyclic noise-reducing apparatus |
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