JPS6484992A - Transmission and reception system for television signal - Google Patents
Transmission and reception system for television signalInfo
- Publication number
- JPS6484992A JPS6484992A JP62026275A JP2627587A JPS6484992A JP S6484992 A JPS6484992 A JP S6484992A JP 62026275 A JP62026275 A JP 62026275A JP 2627587 A JP2627587 A JP 2627587A JP S6484992 A JPS6484992 A JP S6484992A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- luminance signal
- circuit
- limited
- band
- 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
Links
Landscapes
- Color Television Systems (AREA)
Abstract
PURPOSE:To improve largely picture quality by frequency-converting a high frequency luminance signal exceeding the transmission band width by a specific frequency and multiplexing the high frequency luminance signal onto a television signal in the transmission band. CONSTITUTION:A luminance signal Y and color difference signals I, Q are outputted from a matrix 101. A prescribed band is limited to the signals I, Q by LPFs 102, 103 and the spread of a vector is limited by band limit circuits 104, 105, orthogonal modulation is applied by an orthogonal modulation circuit 107 to form a chrominance carrier signal. On the other hand, components below 4.2MHz in the luminance signal Y passes through an LPF 106 and is fed to an adder circuit 108. A high frequency luminance signal YH exceeding 4.2MHz is extracted by a BPF 111 and the spread of the spectrum is limited by a band limit circuit 112 and subjected to frequency modulation by a balanced modulation circuit 113 and a BPF 114. Thus, the signals YH and Y are superimposed on each other. In this case, the carrier frequency mu0 to the circuit 113 is to be selected as an integral number of multiple of the horizontal synchronizing frequency fH.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62026275A JP2539407B2 (en) | 1987-02-09 | 1987-02-09 | Television signal transmitter, recorder, receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62026275A JP2539407B2 (en) | 1987-02-09 | 1987-02-09 | Television signal transmitter, recorder, receiver |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6484992A true JPS6484992A (en) | 1989-03-30 |
JP2539407B2 JP2539407B2 (en) | 1996-10-02 |
Family
ID=12188733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62026275A Expired - Fee Related JP2539407B2 (en) | 1987-02-09 | 1987-02-09 | Television signal transmitter, recorder, receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2539407B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5067018A (en) * | 1989-06-07 | 1991-11-19 | Kabushiki Kaisha Toshiba | Frequency-division multiplexing arrangement for preventing interference between a main television signal and a helper signal thereof |
US5093986A (en) * | 1990-02-05 | 1992-03-10 | Murata Manufacturing Co., Ltd. | Method of forming bump electrodes |
US5227879A (en) * | 1990-01-26 | 1993-07-13 | Tokyo Broadcasting System Inc. | Apparatus for transmitting an extended definition TV signal having compatibility with a conventional TV system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6062284A (en) * | 1983-09-14 | 1985-04-10 | Hitachi Ltd | Frequency shifting circuit |
JPS62250790A (en) * | 1986-04-24 | 1987-10-31 | Nippon Hoso Kyokai <Nhk> | Television signal multiplexing system |
-
1987
- 1987-02-09 JP JP62026275A patent/JP2539407B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6062284A (en) * | 1983-09-14 | 1985-04-10 | Hitachi Ltd | Frequency shifting circuit |
JPS62250790A (en) * | 1986-04-24 | 1987-10-31 | Nippon Hoso Kyokai <Nhk> | Television signal multiplexing system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5067018A (en) * | 1989-06-07 | 1991-11-19 | Kabushiki Kaisha Toshiba | Frequency-division multiplexing arrangement for preventing interference between a main television signal and a helper signal thereof |
US5227879A (en) * | 1990-01-26 | 1993-07-13 | Tokyo Broadcasting System Inc. | Apparatus for transmitting an extended definition TV signal having compatibility with a conventional TV system |
US5093986A (en) * | 1990-02-05 | 1992-03-10 | Murata Manufacturing Co., Ltd. | Method of forming bump electrodes |
Also Published As
Publication number | Publication date |
---|---|
JP2539407B2 (en) | 1996-10-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |