JPS5461823A - Ad conversion system of liquid-crystal display unit - Google Patents

Ad conversion system of liquid-crystal display unit

Info

Publication number
JPS5461823A
JPS5461823A JP12841077A JP12841077A JPS5461823A JP S5461823 A JPS5461823 A JP S5461823A JP 12841077 A JP12841077 A JP 12841077A JP 12841077 A JP12841077 A JP 12841077A JP S5461823 A JPS5461823 A JP S5461823A
Authority
JP
Japan
Prior art keywords
interval
liquid
display unit
crystal display
conversion
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
Application number
JP12841077A
Other languages
Japanese (ja)
Other versions
JPS6114708B2 (en
Inventor
Okito Naito
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
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP12841077A priority Critical patent/JPS5461823A/en
Publication of JPS5461823A publication Critical patent/JPS5461823A/en
Publication of JPS6114708B2 publication Critical patent/JPS6114708B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Liquid Crystal Display Device Control (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

PURPOSE: To obtain a low-frequency A/D conversion part, by composing data, within single scan of a liquid-crystal matrix, of video signals in two continuous horizontal synchronizing signals.
CONSTITUTION: Interval C of 2H from continuous synchronizing signal N0 till N2 is an A/D conversion interval for the 1st video signal, and also a memory interval of one shift register. Further, interval D of 2H from synchronizing signal N3 to N5 is a D/C conversion interval for the 2nd video signal, and also a memory interval of the other shift register. In an interval between signals N0 and N1, sampling is done, for example, 54 times at t1 c, t2 c...t54 c, and in an interval between N1 and N2, the same sampling is also done to compose data within single scan of a liquid- crystal matrix. Consequently, a low-frequency A/D conversion part can be obtained.
COPYRIGHT: (C)1979,JPO&Japio
JP12841077A 1977-10-26 1977-10-26 Ad conversion system of liquid-crystal display unit Granted JPS5461823A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12841077A JPS5461823A (en) 1977-10-26 1977-10-26 Ad conversion system of liquid-crystal display unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12841077A JPS5461823A (en) 1977-10-26 1977-10-26 Ad conversion system of liquid-crystal display unit

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2565287A Division JPS62271570A (en) 1987-02-06 1987-02-06 Ad conversion system for liquid crystal display device

Publications (2)

Publication Number Publication Date
JPS5461823A true JPS5461823A (en) 1979-05-18
JPS6114708B2 JPS6114708B2 (en) 1986-04-19

Family

ID=14984077

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12841077A Granted JPS5461823A (en) 1977-10-26 1977-10-26 Ad conversion system of liquid-crystal display unit

Country Status (1)

Country Link
JP (1) JPS5461823A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5250620A (en) * 1975-10-21 1977-04-22 Matsushita Electric Ind Co Ltd Image display device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5250620A (en) * 1975-10-21 1977-04-22 Matsushita Electric Ind Co Ltd Image display device

Also Published As

Publication number Publication date
JPS6114708B2 (en) 1986-04-19

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