JPS5718184A - Recording and reproducing device of color video signal - Google Patents
Recording and reproducing device of color video signalInfo
- Publication number
- JPS5718184A JPS5718184A JP9297280A JP9297280A JPS5718184A JP S5718184 A JPS5718184 A JP S5718184A JP 9297280 A JP9297280 A JP 9297280A JP 9297280 A JP9297280 A JP 9297280A JP S5718184 A JPS5718184 A JP S5718184A
- Authority
- JP
- Japan
- Prior art keywords
- delay
- fsc
- line
- delay line
- extent
- 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
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/87—Regeneration of colour television signals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
Abstract
PURPOSE:To apply a device to all systems of NTSC, PAL and SECAM, by using a part of delay lines in common. CONSTITUTION:Relation between horizontal scanning frequency fh and chrominnance subcarrier frequency fsc of a PAL system is 1/4 line off-set of fsc=(n-1/4) fh+25Hz, and on the other hand, it is 1/2 line off-set in case of an NTSC system. Accordingly, when fsc of the NTSC system is converted to that which is equal to fsc of the PAL system, the extent of delay of a delay line 10 is made 1H-1/4lambda, (lambda=1/fsc) by disregarding a component of 25Hz. Since a chrominance subcarrier is 180 deg. out of phase at input/output sides of the delay line 10, a chrominance signal can be obtained from a subtracter 24. When the extent of delay of a delay line 11 is made 1H-1/4lambda, a total extent of delay of the delay lines 10, 11 becomes 2H-1/2lambda the chrominance subcarrier becomes in phase at an input side of the delay line 10 and an output side of the delay line 11, and a chrominance signal can be obtained from an adder 12.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9297280A JPS5718184A (en) | 1980-07-07 | 1980-07-07 | Recording and reproducing device of color video signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9297280A JPS5718184A (en) | 1980-07-07 | 1980-07-07 | Recording and reproducing device of color video signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5718184A true JPS5718184A (en) | 1982-01-29 |
Family
ID=14069313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9297280A Pending JPS5718184A (en) | 1980-07-07 | 1980-07-07 | Recording and reproducing device of color video signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5718184A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61236290A (en) * | 1985-04-06 | 1986-10-21 | ノキア ウンテルハルトゥングスエレクトロニック(ドイッチュランド)ゲー.エム.ベー.ハー | Comb-shaped filter circuit |
US4691238A (en) * | 1982-10-21 | 1987-09-01 | Dainippon Screen Mfg. Co., Ltd. | Method and apparatus of storing image data into a memory in a layout scanner system |
JPH0221820U (en) * | 1988-07-14 | 1990-02-14 | ||
JPH06348071A (en) * | 1993-06-08 | 1994-12-22 | Tohoku Ricoh Co Ltd | Electrostatic latent image developing device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5433617A (en) * | 1977-08-20 | 1979-03-12 | Akai Electric | Video tape recorder |
JPS5472623A (en) * | 1977-11-21 | 1979-06-11 | Sony Corp | Record regenerative device for color video signal |
-
1980
- 1980-07-07 JP JP9297280A patent/JPS5718184A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5433617A (en) * | 1977-08-20 | 1979-03-12 | Akai Electric | Video tape recorder |
JPS5472623A (en) * | 1977-11-21 | 1979-06-11 | Sony Corp | Record regenerative device for color video signal |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4691238A (en) * | 1982-10-21 | 1987-09-01 | Dainippon Screen Mfg. Co., Ltd. | Method and apparatus of storing image data into a memory in a layout scanner system |
JPS61236290A (en) * | 1985-04-06 | 1986-10-21 | ノキア ウンテルハルトゥングスエレクトロニック(ドイッチュランド)ゲー.エム.ベー.ハー | Comb-shaped filter circuit |
JPH0221820U (en) * | 1988-07-14 | 1990-02-14 | ||
JPH06348071A (en) * | 1993-06-08 | 1994-12-22 | Tohoku Ricoh Co Ltd | Electrostatic latent image developing device |
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