JPS54116130A - Signal processing circuit - Google Patents

Signal processing circuit

Info

Publication number
JPS54116130A
JPS54116130A JP2300378A JP2300378A JPS54116130A JP S54116130 A JPS54116130 A JP S54116130A JP 2300378 A JP2300378 A JP 2300378A JP 2300378 A JP2300378 A JP 2300378A JP S54116130 A JPS54116130 A JP S54116130A
Authority
JP
Japan
Prior art keywords
attenuation
signal
dispersion
phase
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
JP2300378A
Other languages
Japanese (ja)
Inventor
Hiroshi Gomi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2300378A priority Critical patent/JPS54116130A/en
Publication of JPS54116130A publication Critical patent/JPS54116130A/en
Pending legal-status Critical Current

Links

Landscapes

  • Processing Of Color Television Signals (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE: To reduce the number of pins and to enable to connect in multi-stages, by forming and constituting AC coupling circuits so that the attenuation and phase rotation of circuit can not be given effect to the signal processed through the use of the capacitors constituted into IC.
CONSTITUTION: Taking the delivery performance (attenuation) of the AC coupling circuits P1 and P2 as P1 and P2. The input signal e5 to the burst phase detection circuit A5 at greater signal e1 is independently of the attenuation P2 and constant regerdless of the dispersion in P2. Further, the input signal e4 of the demodulation circuit A4 is determined with the ratio of attenuation P1 and P2. In case of IC, the ratio of capacitances can be made with a good accuracy and the constituent element of P1 and P2 has disperision toward the trend in the same direction, then e4 is not almost affected by P1 and P2 either. Further, the phase θp1 and θp2 between the input and output of the circuits P1 and P2 have the same dispersion, resulting is very small dispersion for θP1-θP2. That is, no dispersion of the phase difference between the burst signal and the chroma signal is caused. Accordingly, even if the capacitor in the AC coupling circuits has an impedance and causes attenuation or phase rotation, no effect on the overall circuit performance is made.
COPYRIGHT: (C)1979,JPO&Japio
JP2300378A 1978-03-01 1978-03-01 Signal processing circuit Pending JPS54116130A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2300378A JPS54116130A (en) 1978-03-01 1978-03-01 Signal processing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2300378A JPS54116130A (en) 1978-03-01 1978-03-01 Signal processing circuit

Publications (1)

Publication Number Publication Date
JPS54116130A true JPS54116130A (en) 1979-09-10

Family

ID=12098316

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2300378A Pending JPS54116130A (en) 1978-03-01 1978-03-01 Signal processing circuit

Country Status (1)

Country Link
JP (1) JPS54116130A (en)

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