JPS5482116A - Transmission system for narrow-band still picture - Google Patents

Transmission system for narrow-band still picture

Info

Publication number
JPS5482116A
JPS5482116A JP14919977A JP14919977A JPS5482116A JP S5482116 A JPS5482116 A JP S5482116A JP 14919977 A JP14919977 A JP 14919977A JP 14919977 A JP14919977 A JP 14919977A JP S5482116 A JPS5482116 A JP S5482116A
Authority
JP
Japan
Prior art keywords
binary
conversion
signal
memory
control circuit
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
JP14919977A
Other languages
Japanese (ja)
Inventor
Masaaki Takahashi
Kazunari Atsuta
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co Ltd
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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP14919977A priority Critical patent/JPS5482116A/en
Publication of JPS5482116A publication Critical patent/JPS5482116A/en
Pending legal-status Critical Current

Links

Landscapes

  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

PURPOSE:To obtain the reception picture image with the optimum resolution by switching the velocity of the clock signal according to the binary and multi-value conversion circuits as well as their reverse conversion circuits and also giving the signal process according to the properties of the subjects. CONSTITUTION:Control circuit 24 is controlled via the operation of switch 26 which switches the mode according to the fact whether the subject features the binary information formed only with the white and black of the drawing or document, etc. or the multi-value information featuring gradations. Here, A/O converter 21 receives the control of the binary and multi-value information to carry out the binary and multi-value conversion. The output of the conversion is recorded in memory 22, and the contents are transmitted to the transmission line via modulator 23. While the reception signal is recorded in memory 32 at the receiving device under the control of control circuit 34 to make the mode of the receiving device equal to that of the transmitting device. Then the contents of memory 32 undergo D/A conversion 33 via read-out data control circuit 36, and thus the signal equivalent to the input signal of the transmitting device is reproduced. In such way, the reception picture image can be obtained with the optimum resolution.
JP14919977A 1977-12-14 1977-12-14 Transmission system for narrow-band still picture Pending JPS5482116A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14919977A JPS5482116A (en) 1977-12-14 1977-12-14 Transmission system for narrow-band still picture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14919977A JPS5482116A (en) 1977-12-14 1977-12-14 Transmission system for narrow-band still picture

Publications (1)

Publication Number Publication Date
JPS5482116A true JPS5482116A (en) 1979-06-30

Family

ID=15469980

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14919977A Pending JPS5482116A (en) 1977-12-14 1977-12-14 Transmission system for narrow-band still picture

Country Status (1)

Country Link
JP (1) JPS5482116A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114362324A (en) * 2022-01-24 2022-04-15 深圳创维－Rgb电子有限公司 Panel charging circuit and panel charging terminal device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5147317A (en) * 1974-10-22 1976-04-22 Nippon Telegraph & Telephone
JPS52127116A (en) * 1976-04-19 1977-10-25 Hitachi Denshi Ltd Transmitting system of static picture

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5147317A (en) * 1974-10-22 1976-04-22 Nippon Telegraph & Telephone
JPS52127116A (en) * 1976-04-19 1977-10-25 Hitachi Denshi Ltd Transmitting system of static picture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114362324A (en) * 2022-01-24 2022-04-15 深圳创维－Rgb电子有限公司 Panel charging circuit and panel charging terminal device

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