JPS61105933A - Service channel signal extracting system - Google Patents

Service channel signal extracting system

Info

Publication number
JPS61105933A
JPS61105933A JP22820184A JP22820184A JPS61105933A JP S61105933 A JPS61105933 A JP S61105933A JP 22820184 A JP22820184 A JP 22820184A JP 22820184 A JP22820184 A JP 22820184A JP S61105933 A JPS61105933 A JP S61105933A
Authority
JP
Japan
Prior art keywords
loop
sc
signal
service channel
pll
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
JP22820184A
Inventor
Kenichi Oide
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP22820184A priority Critical patent/JPS61105933A/en
Publication of JPS61105933A publication Critical patent/JPS61105933A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To extract stably an SC signal and to attain demodulation by incorporating a loop to a service channel (SC) signal into one and increasing the loop gain of a PLL.
CONSTITUTION: The orthogonal center tap of the Ich and Qch of a transversal filer is, e.g., eliminated to incorporate the loop to the SC signal into one and the SC signal is extracted from the PLL loop. Further, the PLL loop gain is increased to compensate the function by the loop of the orthogonal tap so as to avoid hindrance to the demodulation. In addition to the elimination above, the loop gain including, e.g., the orthogonal center tap is decreased or the frequency characteristic of the loop is set so as not to be overlapped with the frequency band of the SC signal.
COPYRIGHT: (C)1986,JPO&Japio
JP22820184A 1984-10-30 1984-10-30 Service channel signal extracting system Pending JPS61105933A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22820184A JPS61105933A (en) 1984-10-30 1984-10-30 Service channel signal extracting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22820184A JPS61105933A (en) 1984-10-30 1984-10-30 Service channel signal extracting system

Publications (1)

Publication Number Publication Date
JPS61105933A true JPS61105933A (en) 1986-05-24

Family

ID=16872781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22820184A Pending JPS61105933A (en) 1984-10-30 1984-10-30 Service channel signal extracting system

Country Status (1)

Country Link
JP (1) JPS61105933A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008072716A (en) * 2006-09-14 2008-03-27 Altera Corp Digital adaptation circuitry and method for programmable logic devices

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008072716A (en) * 2006-09-14 2008-03-27 Altera Corp Digital adaptation circuitry and method for programmable logic devices
US7920621B2 (en) 2006-09-14 2011-04-05 Altera Corporation Digital adaptation circuitry and methods for programmable logic devices
JP2011103678A (en) * 2006-09-14 2011-05-26 Altera Corp Digital adaptation circuitry and method for programmable logic device
US8208523B2 (en) 2006-09-14 2012-06-26 Altera Corporation Digital adaptation circuitry and methods for programmable logic devices

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