JPS5765969A - Signal processing device - Google Patents

Signal processing device

Info

Publication number
JPS5765969A
JPS5765969A JP14349080A JP14349080A JPS5765969A JP S5765969 A JPS5765969 A JP S5765969A JP 14349080 A JP14349080 A JP 14349080A JP 14349080 A JP14349080 A JP 14349080A JP S5765969 A JPS5765969 A JP S5765969A
Authority
JP
Japan
Prior art keywords
circuit
slice
bias
output
sample hold
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
JP14349080A
Other languages
Japanese (ja)
Other versions
JPS625505B2 (en
Inventor
Masayoshi Hirashima
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP14349080A priority Critical patent/JPS5765969A/en
Publication of JPS5765969A publication Critical patent/JPS5765969A/en
Publication of JPS625505B2 publication Critical patent/JPS625505B2/ja
Granted 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

Landscapes

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

Abstract

PURPOSE:To shape a waveform accurately independently of the amplitude difference among plural signals added in plural horizontal scanning times during the vertical blanking interval, by providing a bias generating circuit which applies an optimum bias voltage to a binary signal slice circuit. CONSTITUTION:A slice bias adjusting circuit 23 detects the white level and the black level in the output of a detecting circuit 1 by detecting circuits 84 and 85 respectively, and an approximately average value of both levels is formed as a slice bias by a slice bias generating circuit 86. The output of the slice bias generating circuit 86 is smaple-held by a sample hold circuit 87. The output of a gate 70 is inputted to the sample hold circuit 87 to hold a DC bias corresponding to a constant waveform between a clock line signal CRI and a framing signal FC in the sample hold circuit 87. This output is used as the comparison reference voltage of a slice circuit 4 to receive desired information accurately between binary information different in amplitude.
JP14349080A 1980-10-13 1980-10-13 Signal processing device Granted JPS5765969A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14349080A JPS5765969A (en) 1980-10-13 1980-10-13 Signal processing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14349080A JPS5765969A (en) 1980-10-13 1980-10-13 Signal processing device

Publications (2)

Publication Number Publication Date
JPS5765969A true JPS5765969A (en) 1982-04-21
JPS625505B2 JPS625505B2 (en) 1987-02-05

Family

ID=15339913

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14349080A Granted JPS5765969A (en) 1980-10-13 1980-10-13 Signal processing device

Country Status (1)

Country Link
JP (1) JPS5765969A (en)

Also Published As

Publication number Publication date
JPS625505B2 (en) 1987-02-05

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