JPS567252A - Control signal detecting system in sound reproducing device - Google Patents

Control signal detecting system in sound reproducing device

Info

Publication number
JPS567252A
JPS567252A JP7997679A JP7997679A JPS567252A JP S567252 A JPS567252 A JP S567252A JP 7997679 A JP7997679 A JP 7997679A JP 7997679 A JP7997679 A JP 7997679A JP S567252 A JPS567252 A JP S567252A
Authority
JP
Japan
Prior art keywords
signal
control signal
sound
frequency
modulation
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
JP7997679A
Other languages
Japanese (ja)
Other versions
JPS6032267B2 (en
Inventor
Yoshitoshi Yamauchi
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP54079976A priority Critical patent/JPS6032267B2/en
Publication of JPS567252A publication Critical patent/JPS567252A/en
Publication of JPS6032267B2 publication Critical patent/JPS6032267B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To make it possible to take out a control signal in distinction from the general sound signal surely for reproducing, by using the control signal obtained by amplitude-modulating the carrier signal of a sine wave within the audible frequency range by the modulation signal of a specific frequency.
CONSTITUTION: The sound signal and the control signal obtained by amplitude- modulating a carrier signal within the audible frequency range by the modulation signal of a specific frequency are recorded in one track of the recording medium. In case that the reproduced signal input to signal amplifying part 1 is the general sound signal, the sound burst wave exceeding the modulation frequency of the control signal is eliminated by sound burst wave detecting part 2 and low-pass filter part 3, and only frequency components of the modulation frequency or less are input to counter part 5; and meanwhile, the sound signal is input to part 4, which detects frequency components other than carrier components, also, and therefore, counter part 5 is cleared not to output the sound signal. When the control signal is reproduced, it is output from counter part 5.
COPYRIGHT: (C)1981,JPO&Japio
JP54079976A 1979-06-25 1979-06-25 Control signal detection method in audio playback device Expired JPS6032267B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54079976A JPS6032267B2 (en) 1979-06-25 1979-06-25 Control signal detection method in audio playback device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54079976A JPS6032267B2 (en) 1979-06-25 1979-06-25 Control signal detection method in audio playback device

Publications (2)

Publication Number Publication Date
JPS567252A true JPS567252A (en) 1981-01-24
JPS6032267B2 JPS6032267B2 (en) 1985-07-26

Family

ID=13705347

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54079976A Expired JPS6032267B2 (en) 1979-06-25 1979-06-25 Control signal detection method in audio playback device

Country Status (1)

Country Link
JP (1) JPS6032267B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0614052U (en) * 1992-07-31 1994-02-22 株式会社吉野工業所 Pill container

Also Published As

Publication number Publication date
JPS6032267B2 (en) 1985-07-26

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