JPS6441391A - Noise reduction circuit for color television signal - Google Patents
Noise reduction circuit for color television signalInfo
- Publication number
- JPS6441391A JPS6441391A JP19619087A JP19619087A JPS6441391A JP S6441391 A JPS6441391 A JP S6441391A JP 19619087 A JP19619087 A JP 19619087A JP 19619087 A JP19619087 A JP 19619087A JP S6441391 A JPS6441391 A JP S6441391A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- input
- frame memory
- circuit
- utilizing
- 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
Abstract
PURPOSE:To reduce noise correctly even with respect to a tilt pattern by utilizing an input/output signal of a frame memory retarding an output signal whose noise is reduced by one frame from an arithmetic circuit as an input signal of a color phase correction circuit and controlling the phase circuit by a movement detection circuit utilizing the input/output signal of the frame memory. CONSTITUTION:The noise reduction is operated by utilizing a signal B (2nd signal) whose noise is reduced in one preceding frame while the polarity of the chrominance carrier signal is inverted at a color phase correction circuit 5 for a composite color television signal (1st signal A) inputted to an input terminal 1 by means of an arithmetic circuit 2 and a signal C (3rd signal) whose noise is reduced is outputted at an output terminal 3. A 3rd signal C whose noise is reduced is inputted to a frame memory 4. A color phase correction circuit 5 utilizes the input/output signal of the frame memory to output the signal B where the chrominance carrier signal of one preceding frame is inverted by utilizing the input/output signal of the frame memory. The color phase correction circuit 5 is controlled by a movement coefficient (k) representing the movement information extracted by the movement detection circuit 6. Thus, noise reduction is attained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19619087A JP2574803B2 (en) | 1987-08-07 | 1987-08-07 | Noise reduction circuit for color television signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19619087A JP2574803B2 (en) | 1987-08-07 | 1987-08-07 | Noise reduction circuit for color television signal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6441391A true JPS6441391A (en) | 1989-02-13 |
| JP2574803B2 JP2574803B2 (en) | 1997-01-22 |
Family
ID=16353689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19619087A Expired - Lifetime JP2574803B2 (en) | 1987-08-07 | 1987-08-07 | Noise reduction circuit for color television signal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2574803B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5020976A (en) * | 1989-05-26 | 1991-06-04 | Diesel Kiki Co., Ltd. | Variale capacity vane compressor |
| JP2002330447A (en) * | 2001-04-27 | 2002-11-15 | Sony Corp | Luminance chrominance signal separation and noise reduction circuit |
-
1987
- 1987-08-07 JP JP19619087A patent/JP2574803B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5020976A (en) * | 1989-05-26 | 1991-06-04 | Diesel Kiki Co., Ltd. | Variale capacity vane compressor |
| JP2002330447A (en) * | 2001-04-27 | 2002-11-15 | Sony Corp | Luminance chrominance signal separation and noise reduction circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2574803B2 (en) | 1997-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| MY111827A (en) | Reproduction circuit for skin color in video signals | |
| CA1246734A (en) | Apparatus for detecting movement in a television signal | |
| JPS6441391A (en) | Noise reduction circuit for color television signal | |
| JPS5279729A (en) | Color adjusting circuit of color television | |
| JPS5762680A (en) | Display controller | |
| JPS6460088A (en) | Automatic white balance control circuit | |
| JPS53125724A (en) | Color television receiver | |
| JPS5417623A (en) | Scanning-speed modulator circuit | |
| GB1512149A (en) | Colour television | |
| JPS5550795A (en) | Rbg chroma key signal generator | |
| JPS53126817A (en) | Level controller of video signal | |
| JPS5546621A (en) | Shading correction circuit | |
| JPS53118927A (en) | Video detecting unit | |
| JPS5397A (en) | Luminance control signal formation method for gradation display | |
| JPS5748153A (en) | Picture element density converting system | |
| JPS5412518A (en) | Scanning velocity modulating circuit | |
| JPS6424681A (en) | Sharpness improving device for video signal | |
| JPS5541059A (en) | Color television camera | |
| JPS53144624A (en) | Signal processing system | |
| JPS57164666A (en) | Synthesizing method for video signal using two- dimensional charge transfer element | |
| JPS6427387A (en) | Noise reduction circuit for chrominance carrier signal | |
| JPS574669A (en) | Superimposing system between superimposed signal and picture control signal | |
| JPS55127786A (en) | Frequency characteristic improving circuit of color signal | |
| JPS57142077A (en) | Boarder signal generator | |
| JPS6432590A (en) | Magnetic recording and reproducing circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 11 Free format text: PAYMENT UNTIL: 20071024 |