JPS57183188A - Generating circuit for signal for discriminating data - Google Patents

Generating circuit for signal for discriminating data

Info

Publication number
JPS57183188A
JPS57183188A JP6754781A JP6754781A JPS57183188A JP S57183188 A JPS57183188 A JP S57183188A JP 6754781 A JP6754781 A JP 6754781A JP 6754781 A JP6754781 A JP 6754781A JP S57183188 A JPS57183188 A JP S57183188A
Authority
JP
Japan
Prior art keywords
data
discrimination
amplitude
positive
peak
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
JP6754781A
Other languages
Japanese (ja)
Inventor
Shigeharu Eguri
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor 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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP6754781A priority Critical patent/JPS57183188A/en
Publication of JPS57183188A publication Critical patent/JPS57183188A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/025—Systems for the transmission of digital non-picture data, e.g. of text during the active part of a television frame
    • H04N7/035—Circuits for the digital non-picture data signal, e.g. for slicing of the data signal, for regeneration of the data-clock signal, for error detection or correction of the data signal
    • H04N7/0355—Circuits for the digital non-picture data signal, e.g. for slicing of the data signal, for regeneration of the data-clock signal, for error detection or correction of the data signal for discrimination of the binary level of the digital data, e.g. amplitude slicers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)

Abstract

PURPOSE:To automatically obtain a discrimination signal which has an adequate discrimination level even when data varies in amplitude, by forcibly setting the terminal voltage of a peak-value holding capacitor for data to a specific voltage value at prescribed intervals of time. CONSTITUTION:While the pedestal part of a positive composite video signal supplied to an input terminal 2 is fixed at a potential EC by a clamping circuit CRC, the positive-side peak value is detected by a positive peak detecting circuit PDP and it is held by a peak value holding capacitor C. Resistances R1 and R2 are connected across the capacitor C in series and a potential at their connection point Z has an intermediate value between data 0 and 1 all the time. Therefore, a discrimination signal supplied from a point Z to a voltage comparator COMP is set to the best level (a half as great as the amplitude of data) for data discrimination and even when the data varies in amplitude, invariably excellent discrimination is achieved.
JP6754781A 1981-05-02 1981-05-02 Generating circuit for signal for discriminating data Pending JPS57183188A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6754781A JPS57183188A (en) 1981-05-02 1981-05-02 Generating circuit for signal for discriminating data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6754781A JPS57183188A (en) 1981-05-02 1981-05-02 Generating circuit for signal for discriminating data

Publications (1)

Publication Number Publication Date
JPS57183188A true JPS57183188A (en) 1982-11-11

Family

ID=13348090

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6754781A Pending JPS57183188A (en) 1981-05-02 1981-05-02 Generating circuit for signal for discriminating data

Country Status (1)

Country Link
JP (1) JPS57183188A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60245383A (en) * 1984-05-18 1985-12-05 Matsushita Electric Ind Co Ltd Separating circuit of data signal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60245383A (en) * 1984-05-18 1985-12-05 Matsushita Electric Ind Co Ltd Separating circuit of data signal
JPH0518315B2 (en) * 1984-05-18 1993-03-11 Matsushita Electric Ind Co Ltd

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