JPS56136043A - Receiver - Google Patents

Receiver

Info

Publication number
JPS56136043A
JPS56136043A JP3944580A JP3944580A JPS56136043A JP S56136043 A JPS56136043 A JP S56136043A JP 3944580 A JP3944580 A JP 3944580A JP 3944580 A JP3944580 A JP 3944580A JP S56136043 A JPS56136043 A JP S56136043A
Authority
JP
Japan
Prior art keywords
filter
frequency
center frequency
band
supplied
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
JP3944580A
Other languages
Japanese (ja)
Other versions
JPS6236409B2 (en
Inventor
Satoshi Yokoya
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP3944580A priority Critical patent/JPS56136043A/en
Publication of JPS56136043A publication Critical patent/JPS56136043A/en
Publication of JPS6236409B2 publication Critical patent/JPS6236409B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
    • H04H40/36—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control

Abstract

PURPOSE:To obtain horizontally symmetric frequency characteristics even in case of slight detuning, by using a digital filter as an IF filter and by setting its center frequency to a reference frequency at any time. CONSTITUTION:Between IF amplifying circuits 2A and 2B, narrow-band BPF30 is provided and IF signal S1, after band-limited by filter 30, is supplied to divider 3, and thus obtained voice signal component SA is supplied to synchronous detectors 4 and 5. Filter 30 is composed of a digital filter and as closk signal CK for driving this filter 30, a pulse obtained by frequency-dividing the oscillation output of variable oscillator 13 of PLL circuit 12 by M at counter 31 is utilized. Therefore, while circuit 12 is being locked, the center frequency of filter 30 is equal to the intermediate frequency. Then, when the intermediate frequency shifts slightly from the normal frequency in tuning, the center frequency of filter 30 shifts by the extent and filter characteristics symmetric to left and right on the center frequency can be obtained.
JP3944580A 1980-03-27 1980-03-27 Receiver Granted JPS56136043A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3944580A JPS56136043A (en) 1980-03-27 1980-03-27 Receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3944580A JPS56136043A (en) 1980-03-27 1980-03-27 Receiver

Publications (2)

Publication Number Publication Date
JPS56136043A true JPS56136043A (en) 1981-10-23
JPS6236409B2 JPS6236409B2 (en) 1987-08-06

Family

ID=12553209

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3944580A Granted JPS56136043A (en) 1980-03-27 1980-03-27 Receiver

Country Status (1)

Country Link
JP (1) JPS56136043A (en)

Also Published As

Publication number Publication date
JPS6236409B2 (en) 1987-08-06

Similar Documents

Publication Publication Date Title
CA2130871A1 (en) Method and Apparatus for a Phase-Locked Loop Circuit with Holdover Mode
EP0306249A3 (en) Frequency synthesizer
GB1507642A (en) Electrical digital data circuits
GB1335142A (en) Demodulator system
US5542114A (en) Radio receiver for suppressing frequency drift in an intermediate frequency stage
DE2962880D1 (en) Circuit for timing signal recovery in digital signal transmission
JPS56136043A (en) Receiver
JPS553238A (en) Reception frequency display system
JPS56169974A (en) Receiver for multiplex information signal
JPS5523674A (en) Correction circuit for intermediate frequency
JPS5380202A (en) Phase-locked loop for demodulation of multichannel record
GB1495203A (en) Phase locked loop circuits
JPS6412691A (en) Video signal sampling circuit
JPS6413833A (en) Frame synchronizing clock generating circuit
JPS5784695A (en) Control circuit for transmission frequency
JPS56125118A (en) Digital phase synchronizing circuit
JPS5750158A (en) Carrier reproducing circuit
JPS54122914A (en) Radio receiver of pll frequency synthesizer system
JPS55154834A (en) Radio receiver
JPS6424632A (en) Phase locked loop circuit
JPS57162841A (en) Digital pll circuit system
JPS54121610A (en) Pll circuit of radio receiver
JPS5520074A (en) Digital phase synchronous circuit
JPS57173267A (en) Afc circuit
JPS5673369A (en) Phase comparison system of decca receiving device