JPS55110482A - Pilot signal identifying unit of audio multiplex broadcast - Google Patents

Pilot signal identifying unit of audio multiplex broadcast

Info

Publication number
JPS55110482A
JPS55110482A JP10627579A JP10627579A JPS55110482A JP S55110482 A JPS55110482 A JP S55110482A JP 10627579 A JP10627579 A JP 10627579A JP 10627579 A JP10627579 A JP 10627579A JP S55110482 A JPS55110482 A JP S55110482A
Authority
JP
Japan
Prior art keywords
signal
fed
detector
detected
pilot signal
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
JP10627579A
Other languages
Japanese (ja)
Other versions
JPS6133423B2 (en
Inventor
Toyohiko Terada
Koichi Ryu
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP10627579A priority Critical patent/JPS55110482A/en
Publication of JPS55110482A publication Critical patent/JPS55110482A/en
Publication of JPS6133423B2 publication Critical patent/JPS6133423B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
    • H04N5/607—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for more than one sound signal, e.g. stereo, multilanguages

Abstract

PURPOSE:To make easy circuit integration without using reed filter, by the identification of display signal for the program content based on the frequency difference between the detection signal and the reference signal of a given frequency at the production of detection signal. CONSTITUTION:The pilot signal fA having the carrier is picked up with BPF 1 from the composite signal in FM detection with the detector, and the single tone frequency signal of signal fA is detected at the AM detector 2, This detected signal is fed to the wave shape circuit 4 via BPF 3 to convert into rectangular pulse signal fT. Further, the signal fA is converted into rectangular wave pulse signal with the wave shape circuit 5, it is fed to the delayed D-FF7 as the reference signal fQ at the frequency divider 6 to produce the signal fD having the difference signal from the signal fT from the circuit 4. This signal fD is fed to the counter in cascade connection of FF8, 9 to identify the display content detected at the pilot signal detector 11 based on the content of this counter.
JP10627579A 1979-08-21 1979-08-21 Pilot signal identifying unit of audio multiplex broadcast Granted JPS55110482A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10627579A JPS55110482A (en) 1979-08-21 1979-08-21 Pilot signal identifying unit of audio multiplex broadcast

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10627579A JPS55110482A (en) 1979-08-21 1979-08-21 Pilot signal identifying unit of audio multiplex broadcast

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP54018014A Division JPS6056352B2 (en) 1979-02-19 1979-02-19 Audio multiplex broadcast pilot signal identification device

Publications (2)

Publication Number Publication Date
JPS55110482A true JPS55110482A (en) 1980-08-25
JPS6133423B2 JPS6133423B2 (en) 1986-08-01

Family

ID=14429520

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10627579A Granted JPS55110482A (en) 1979-08-21 1979-08-21 Pilot signal identifying unit of audio multiplex broadcast

Country Status (1)

Country Link
JP (1) JPS55110482A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293873A2 (en) * 1987-06-03 1988-12-07 Sanyo Electric Co., Ltd A signal distinction circuit
EP0369451A2 (en) * 1988-11-16 1990-05-23 Sanyo Electric Co., Ltd. Signal distinction circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293873A2 (en) * 1987-06-03 1988-12-07 Sanyo Electric Co., Ltd A signal distinction circuit
EP0369451A2 (en) * 1988-11-16 1990-05-23 Sanyo Electric Co., Ltd. Signal distinction circuit

Also Published As

Publication number Publication date
JPS6133423B2 (en) 1986-08-01

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