JPS6425685A - Transmission method for high-definition television signal - Google Patents

Transmission method for high-definition television signal

Info

Publication number
JPS6425685A
JPS6425685A JP62182523A JP18252387A JPS6425685A JP S6425685 A JPS6425685 A JP S6425685A JP 62182523 A JP62182523 A JP 62182523A JP 18252387 A JP18252387 A JP 18252387A JP S6425685 A JPS6425685 A JP S6425685A
Authority
JP
Japan
Prior art keywords
frequency
signal
result
modulation
modulator
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
JP62182523A
Other languages
Japanese (ja)
Inventor
Yoshio Yasumoto
Teiji Kageyama
Hideo Inoue
Yoshio Abe
Hideyo Uehata
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 JP62182523A priority Critical patent/JPS6425685A/en
Priority to CA000562168A priority patent/CA1314620C/en
Priority to KR1019880003286A priority patent/KR910004291B1/en
Publication of JPS6425685A publication Critical patent/JPS6425685A/en
Pending legal-status Critical Current

Links

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  • Television Systems (AREA)

Abstract

PURPOSE:To attain high-definition broadcasting without giving effect on existing television broadcast by sending multiplexedly a reference signal used for frequency conversion together with a high-definition luminance signal and chrominance signal in the standard band of the existing television broadcast. CONSTITUTION:After a wide band luminance signal (a) and a modulation color signal (d) are synthesized by a synthesizer 6, the result is separated into a high-frequency component (f) and a low-frequency component by a frequency separator 7. The high frequency component (f) is multiplied with a converted frequency (k) and converted into a low frequency. The said converting frequency (k) is sent multiplexedly for vertical blanking period divided into a fraction of an integral number by a frequency divider 31. Thus, the result is added to the signal subjected to low frequency conversion by an adder 32 and the result is fed to a modulator 3. The modulator 3 and the modulator 4 applying modulation with a conventional NTSC signal are applied as orthogonal modulation by using orthogonal carriers l, m. The output signals of the modulators 3, 4 are synthesized by the synthesizer 2 via an inverse Nyquist filter 11 and a VSB filter 12 and the result is sent to the reception side as a synthesis modulation signal.
JP62182523A 1987-03-27 1987-07-22 Transmission method for high-definition television signal Pending JPS6425685A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP62182523A JPS6425685A (en) 1987-07-22 1987-07-22 Transmission method for high-definition television signal
CA000562168A CA1314620C (en) 1987-03-27 1988-03-23 Multiplex tv signal processing apparatus
KR1019880003286A KR910004291B1 (en) 1987-03-27 1988-03-26 Multi-television signal processing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62182523A JPS6425685A (en) 1987-07-22 1987-07-22 Transmission method for high-definition television signal

Publications (1)

Publication Number Publication Date
JPS6425685A true JPS6425685A (en) 1989-01-27

Family

ID=16119791

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62182523A Pending JPS6425685A (en) 1987-03-27 1987-07-22 Transmission method for high-definition television signal

Country Status (1)

Country Link
JP (1) JPS6425685A (en)

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