JPS648783A - Video signal reproducing device - Google Patents
Video signal reproducing deviceInfo
- Publication number
- JPS648783A JPS648783A JP62164816A JP16481687A JPS648783A JP S648783 A JPS648783 A JP S648783A JP 62164816 A JP62164816 A JP 62164816A JP 16481687 A JP16481687 A JP 16481687A JP S648783 A JPS648783 A JP S648783A
- Authority
- JP
- Japan
- Prior art keywords
- period
- video signal
- memory
- horizontal scanning
- readout
- 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
- Television Signal Processing For Recording (AREA)
Abstract
PURPOSE:To attain high speed reproduction without skew by setting an address reset period, a write period and a readout period to be an integral multiple of a horizontal scanning period of a video signal. CONSTITUTION:In reproducing a video signal while a recording medium is run at a speed being an even multiple of the speed at recording, a signal reproduced from rotary heads HA, HB at a period corresponding to the speed is written into a memory 42 and a signal stored in the memory 42 is read out alternately. In this case, a timing controller 26 and an address counter 46 set the address reset period, the write period and the readout period to be an integral multiple of the horizontal scanning period of the video signal. Thus, the write/readout of the memory is applied in the unit of horizontal scanning lines and the address control of the memory is decided in the unit of horizontal scanning lines, then excellent high speed reproduction is attained, in which no adverse effect due to skew is caused on the reproduced pattern.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62164816A JPH07105934B2 (en) | 1987-06-30 | 1987-06-30 | Video signal playback device |
US07/209,274 US5034827A (en) | 1987-06-30 | 1988-06-20 | Video signal processing apparatus with memory read/write timing related to horizontal scanning period |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62164816A JPH07105934B2 (en) | 1987-06-30 | 1987-06-30 | Video signal playback device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS648783A true JPS648783A (en) | 1989-01-12 |
JPH07105934B2 JPH07105934B2 (en) | 1995-11-13 |
Family
ID=15800465
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62164816A Expired - Fee Related JPH07105934B2 (en) | 1987-06-30 | 1987-06-30 | Video signal playback device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07105934B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02230394A (en) * | 1990-01-26 | 1990-09-12 | Nohmi Bosai Ltd | Device for testing function of scattered light type smoke sensor |
JPH02230396A (en) * | 1990-01-26 | 1990-09-12 | Nohmi Bosai Ltd | Device for testing function of scattered light type smoke sensor |
JPH02230395A (en) * | 1990-01-26 | 1990-09-12 | Nohmi Bosai Ltd | Device for testing function of scattered light type smoke sensor |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5949576A (en) * | 1982-09-14 | 1984-03-22 | Matsushita Electric Ind Co Ltd | Cleaning device of copying machine |
JPS60157382A (en) * | 1984-01-27 | 1985-08-17 | Hitachi Ltd | Rotary head type magnetic video recorder and reproducer |
JPS627277A (en) * | 1985-07-03 | 1987-01-14 | Matsushita Electric Ind Co Ltd | Magnetic reproducing device |
JPS6271388A (en) * | 1985-09-25 | 1987-04-02 | Toshiba Corp | Picture memory controller |
-
1987
- 1987-06-30 JP JP62164816A patent/JPH07105934B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5949576A (en) * | 1982-09-14 | 1984-03-22 | Matsushita Electric Ind Co Ltd | Cleaning device of copying machine |
JPS60157382A (en) * | 1984-01-27 | 1985-08-17 | Hitachi Ltd | Rotary head type magnetic video recorder and reproducer |
JPS627277A (en) * | 1985-07-03 | 1987-01-14 | Matsushita Electric Ind Co Ltd | Magnetic reproducing device |
JPS6271388A (en) * | 1985-09-25 | 1987-04-02 | Toshiba Corp | Picture memory controller |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02230394A (en) * | 1990-01-26 | 1990-09-12 | Nohmi Bosai Ltd | Device for testing function of scattered light type smoke sensor |
JPH02230396A (en) * | 1990-01-26 | 1990-09-12 | Nohmi Bosai Ltd | Device for testing function of scattered light type smoke sensor |
JPH02230395A (en) * | 1990-01-26 | 1990-09-12 | Nohmi Bosai Ltd | Device for testing function of scattered light type smoke sensor |
Also Published As
Publication number | Publication date |
---|---|
JPH07105934B2 (en) | 1995-11-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |