JPS6444184A - Video printer - Google Patents

Video printer

Info

Publication number
JPS6444184A
JPS6444184A JP20025987A JP20025987A JPS6444184A JP S6444184 A JPS6444184 A JP S6444184A JP 20025987 A JP20025987 A JP 20025987A JP 20025987 A JP20025987 A JP 20025987A JP S6444184 A JPS6444184 A JP S6444184A
Authority
JP
Japan
Prior art keywords
frequency
sampling clock
horizontal
horizontal frequency
vertical
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
Application number
JP20025987A
Other languages
Japanese (ja)
Inventor
Shoji Yokoyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP20025987A priority Critical patent/JPS6444184A/en
Publication of JPS6444184A publication Critical patent/JPS6444184A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electronic Switches (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

PURPOSE:To automatically obtain a sampling clock synchronizing with several types of dot clocks by automatically detecting a horizontal frequency and a vertical frequency and automatically generating the sampling clock. CONSTITUTION:The horizontal frequency and the vertical frequency of a video signal are detected by a horizontal frequency detecting part 101 and a vertical frequency detecting part 102. A sampling clock generating part 103 generates the sampling clock for quantizing to video signal. The frequency dividing ratio of a frequency divider 104 is changed by the detected horizontal frequency and the vertical frequency to divide the frequency of the sampling clock and have a frequency equal to the horizontal frequency. The signal of the frequency equal to this horizontal frequency is fed back to the sampling clock generating part 103. In the sampling clock generating part 103, the sampling clock is synchronized with the dot clock by the signal and of the frequency equal to this horizontal frequency and the horizontal frequency.
JP20025987A 1987-08-11 1987-08-11 Video printer Pending JPS6444184A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20025987A JPS6444184A (en) 1987-08-11 1987-08-11 Video printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20025987A JPS6444184A (en) 1987-08-11 1987-08-11 Video printer

Publications (1)

Publication Number Publication Date
JPS6444184A true JPS6444184A (en) 1989-02-16

Family

ID=16421384

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20025987A Pending JPS6444184A (en) 1987-08-11 1987-08-11 Video printer

Country Status (1)

Country Link
JP (1) JPS6444184A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0397376A (en) * 1989-09-11 1991-04-23 Hitachi Ltd Video signal processor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0397376A (en) * 1989-09-11 1991-04-23 Hitachi Ltd Video signal processor

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