JPS5630378A - Sound pcm transmission system - Google Patents

Sound pcm transmission system

Info

Publication number
JPS5630378A
JPS5630378A JP10596479A JP10596479A JPS5630378A JP S5630378 A JPS5630378 A JP S5630378A JP 10596479 A JP10596479 A JP 10596479A JP 10596479 A JP10596479 A JP 10596479A JP S5630378 A JPS5630378 A JP S5630378A
Authority
JP
Japan
Prior art keywords
signal
output
section
buffer
video 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.)
Pending
Application number
JP10596479A
Other languages
Japanese (ja)
Inventor
Muneyuki Okuda
Yasutaka Kato
Yoshihiro Murakami
Junzo Uno
Kunihiro Shirata
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.)
Oki Electric Industry Co Ltd
Japan Broadcasting Corp
Original Assignee
Nippon Hoso Kyokai NHK
Oki Electric Industry Co Ltd
Japan Broadcasting 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 Nippon Hoso Kyokai NHK, Oki Electric Industry Co Ltd, Japan Broadcasting Corp filed Critical Nippon Hoso Kyokai NHK
Priority to JP10596479A priority Critical patent/JPS5630378A/en
Publication of JPS5630378A publication Critical patent/JPS5630378A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/084—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the horizontal blanking interval only
    • H04N7/085—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the horizontal blanking interval only the inserted signal being digital

Abstract

PURPOSE:To improve picture quality by compressing the band and time of a horizontal video signal section and superposing a sound PCM signal in the specific section of a specific line while a video signal in the specific section of other lines. CONSTITUTION:LPF12 separates a luminance signal from the output of A/D converter 11 and HPF13 separates a color signal from the output of converter 11. Then, sampling circuit 14 samples the output of LPF12 and stores the data in buffer memory 15, and a signal obtained by delaying 16 the color signal passed through HPF13 and its phase-inverted signal are added and averaged at 18, whose output is added 19 to the output of buffer 15. The output of circuit 19, the output of converter 11 passed through buffer 20 and an audio signal passed through buffer 21 are sent to D/A23 under switching control 22. Consequently, the band and time of the horizontal video signal section are compressed to superpose the sound PCM signal in the specific section of a specific line while superposing the video signal in the specific section of other lines, so that the picture quality can be improved.
JP10596479A 1979-08-22 1979-08-22 Sound pcm transmission system Pending JPS5630378A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10596479A JPS5630378A (en) 1979-08-22 1979-08-22 Sound pcm transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10596479A JPS5630378A (en) 1979-08-22 1979-08-22 Sound pcm transmission system

Publications (1)

Publication Number Publication Date
JPS5630378A true JPS5630378A (en) 1981-03-26

Family

ID=14421467

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10596479A Pending JPS5630378A (en) 1979-08-22 1979-08-22 Sound pcm transmission system

Country Status (1)

Country Link
JP (1) JPS5630378A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58116823A (en) * 1981-12-16 1983-07-12 ジヤツク・グルミレ Recording information remote distance distributing method and system for performing same method
JPS62243493A (en) * 1986-04-16 1987-10-23 Canon Inc Information transmission system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58116823A (en) * 1981-12-16 1983-07-12 ジヤツク・グルミレ Recording information remote distance distributing method and system for performing same method
JPS62243493A (en) * 1986-04-16 1987-10-23 Canon Inc Information transmission system

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