JPS5636275A - Acoustic image expanding unit - Google Patents

Acoustic image expanding unit

Info

Publication number
JPS5636275A
JPS5636275A JP11188779A JP11188779A JPS5636275A JP S5636275 A JPS5636275 A JP S5636275A JP 11188779 A JP11188779 A JP 11188779A JP 11188779 A JP11188779 A JP 11188779A JP S5636275 A JPS5636275 A JP S5636275A
Authority
JP
Japan
Prior art keywords
circuit
impression
acoustic image
image expanding
noise
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
JP11188779A
Other languages
Japanese (ja)
Other versions
JPS6142469B2 (en
Inventor
Makoto Kikuchi
Norio Kawaguchi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP11188779A priority Critical patent/JPS5636275A/en
Publication of JPS5636275A publication Critical patent/JPS5636275A/en
Publication of JPS6142469B2 publication Critical patent/JPS6142469B2/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Stereophonic System (AREA)

Abstract

PURPOSE:To eliminate the discordant noise of the acoustic image expanding circuit to prevent uncomfortable impression of the audience, by adding noise eliminating rotation to the acoustic image expanding circuit. CONSTITUTION:The difference signal of L-R input is delayed by BBD 11 and is mixed into left and right sound signals as indirect sound at a stereo broadcast receiving time. Therefore, attendance impression and expanding impression can be obtained, and then, uncomfortable impression is given due to noise for idle channel. For the purpose of preventing this uncomfortable impression, video signal detecting circuit 20 is provided which outputs a low-level voltage for synchronizing signal ''presence'' of the television signal and outputs a high-level voltage for synchronizing signal ''absence''. This circuit is connected to video detecting circuit 19, and the output of video signal detecting circuit 20 is connected to the base of transistor 21. The collector side of transistor 21 is connected to acoustic image expanding switch 12 which issues indirect sound for high-level input and issues the command to cut off indirect sound for low-level input under the grounded state, and a noise eliminating circuit is provided which is connected to DC power source VCC through the collector side and resistance R.
JP11188779A 1979-08-31 1979-08-31 Acoustic image expanding unit Granted JPS5636275A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11188779A JPS5636275A (en) 1979-08-31 1979-08-31 Acoustic image expanding unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11188779A JPS5636275A (en) 1979-08-31 1979-08-31 Acoustic image expanding unit

Publications (2)

Publication Number Publication Date
JPS5636275A true JPS5636275A (en) 1981-04-09
JPS6142469B2 JPS6142469B2 (en) 1986-09-20

Family

ID=14572629

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11188779A Granted JPS5636275A (en) 1979-08-31 1979-08-31 Acoustic image expanding unit

Country Status (1)

Country Link
JP (1) JPS5636275A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6123384U (en) * 1984-07-13 1986-02-12 三和機材株式会社 Large diameter excavator for bedrock
JPS62271568A (en) * 1986-05-20 1987-11-25 Sony Corp Television receiver
JPH07109883A (en) * 1993-10-14 1995-04-25 Tomotake Shigemori Vibration/rotation type excavator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU4528889A (en) * 1988-11-02 1990-05-28 Extrude Hone Corporation Orbital and/or reciprocal machining with a viscous plastic medium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6123384U (en) * 1984-07-13 1986-02-12 三和機材株式会社 Large diameter excavator for bedrock
JPS62271568A (en) * 1986-05-20 1987-11-25 Sony Corp Television receiver
JPH07109883A (en) * 1993-10-14 1995-04-25 Tomotake Shigemori Vibration/rotation type excavator

Also Published As

Publication number Publication date
JPS6142469B2 (en) 1986-09-20

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