JPS55153465A - Facsimile unit - Google Patents

Facsimile unit

Info

Publication number
JPS55153465A
JPS55153465A JP6207179A JP6207179A JPS55153465A JP S55153465 A JPS55153465 A JP S55153465A JP 6207179 A JP6207179 A JP 6207179A JP 6207179 A JP6207179 A JP 6207179A JP S55153465 A JPS55153465 A JP S55153465A
Authority
JP
Japan
Prior art keywords
circuit
vsb filter
reception
transmission
binary
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
JP6207179A
Other languages
Japanese (ja)
Other versions
JPH0122790B2 (en
Inventor
Asao Watanabe
Sadasuke Kurabayashi
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP6207179A priority Critical patent/JPS55153465A/en
Publication of JPS55153465A publication Critical patent/JPS55153465A/en
Publication of JPH0122790B2 publication Critical patent/JPH0122790B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00095—Systems or arrangements for the transmission of the picture signal

Abstract

PURPOSE:To make small the size of unit and to decrease the cost, by using the modulator and VSB filter used at transmission, for the demodulation and the rejection of harmonics at reception respectively. CONSTITUTION:At transmission, the video signal obtained through the scanning of original 25a with the image sensor 25 is the modulation signal rejected for high frequency componets by means of the MODEM34, VSB filter 35 through the switch 30a and via the binary-ternary value conversion circuit 26, amplitude control circuit 28 and LPF29, and is transmitted to the line 39 via the switch 32a and NCU38. At reception, the switches 30-32 are respectively selected to the positions 30b- 32b. The input signal from NCU38 passes through the AGC circuit 42, is demodulated at the MODEM34 with the carrier signal extracted at the carrier extracting circuit 43, is rejected for the high frequency components at the VSB filter 35, and is input to the ternary-binary value conversion circuit 44. The circuit 44 outputs the input signal as the binary video signal. Since the MODEM and VSB filter are commonly used for transmission and reception, the cost can be decreased and the video quality can be improved.
JP6207179A 1979-05-18 1979-05-18 Facsimile unit Granted JPS55153465A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6207179A JPS55153465A (en) 1979-05-18 1979-05-18 Facsimile unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6207179A JPS55153465A (en) 1979-05-18 1979-05-18 Facsimile unit

Publications (2)

Publication Number Publication Date
JPS55153465A true JPS55153465A (en) 1980-11-29
JPH0122790B2 JPH0122790B2 (en) 1989-04-27

Family

ID=13189481

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6207179A Granted JPS55153465A (en) 1979-05-18 1979-05-18 Facsimile unit

Country Status (1)

Country Link
JP (1) JPS55153465A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5321513A (en) * 1976-08-11 1978-02-28 Nec Corp Digital circuit for vestigial side-band amplitude modulation and demodulation of facsimile signal
JPS53149707A (en) * 1977-06-02 1978-12-27 Sony Corp Am-ssb common-use transmitter-receiver

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5321513A (en) * 1976-08-11 1978-02-28 Nec Corp Digital circuit for vestigial side-band amplitude modulation and demodulation of facsimile signal
JPS53149707A (en) * 1977-06-02 1978-12-27 Sony Corp Am-ssb common-use transmitter-receiver

Also Published As

Publication number Publication date
JPH0122790B2 (en) 1989-04-27

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