JPS60170394A - Processing system of television signal - Google Patents
Processing system of television signalInfo
- Publication number
- JPS60170394A JPS60170394A JP59025024A JP2502484A JPS60170394A JP S60170394 A JPS60170394 A JP S60170394A JP 59025024 A JP59025024 A JP 59025024A JP 2502484 A JP2502484 A JP 2502484A JP S60170394 A JPS60170394 A JP S60170394A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- component
- highly precise
- information
- 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
Links
Landscapes
- Color Television Systems (AREA)
- Television Systems (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明はテレビジョン信号の処理方式に係り、特に現在
のNTSC方式に完全に交信性があり、広帯域の画像信
号狭帯域の周波数帯で伝送し、広帯域の画像を復調する
信号処理方式に係る。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a television signal processing system, and in particular to a television signal processing system that is fully compatible with the current NTSC system and transmits a wideband image signal in a narrow frequency band. , relates to a signal processing method for demodulating wideband images.
従来、NTSCテレビジョン方式と完全に交信性のある
高精細のテレビジョン方式として、電子通信学会技術報
告C383−61r完全交信性を有する高精細TV方式
の提案」 (昭和58年7月29日発表)に述べられた
方式がある。As a high-definition television system that is fully compatible with the conventional NTSC television system, IEICE technical report C383-61r "Proposal of a high-definition TV system that is fully compatible with the NTSC television system" (published on July 29, 1982) ).
上記方式の1つは第1図の3次元周波数領域の図に示す
ように、輝度信号の高域成分YH(高精細情報)を(C
)のYH′ に示すように、周波数変換して、輝度信号
の低調波成分(現行のテレビ信号の輝度信号)と多重化
して伝送するものである。One of the above methods converts the high-frequency component YH (high-definition information) of the luminance signal into (C
), the frequency is converted and multiplexed with the lower harmonic component of the luminance signal (the luminance signal of the current television signal) and transmitted.
上記方式の他の1つは、第1図と同様の表現による第2
図のYu’で示した所に高精細信号を周波数シフトして
挿入したものである。すなわち、時間周波数fと垂直周
波数νの関係は色信号と同じ場所の水平周波数μの低周
波部分に、高精細信号YHをYHに変換して挿入したも
のである。Another one of the above methods is a second
A high-definition signal is frequency-shifted and inserted at the location indicated by Yu' in the figure. That is, the relationship between the temporal frequency f and the vertical frequency ν is such that the high-definition signal YH is converted to YH and inserted into the low frequency part of the horizontal frequency μ at the same location as the color signal.
本発明の目的は、前述の方法を更に発展させ現在のNT
SCテレビジョン方式で、あまり有効に利用されていな
い周波数帯域を見出し、:こに高精細情報を(輝度信号
の高域成分)を挿入する。It is an object of the present invention to further develop the aforementioned method and to
In the SC television system, we find a frequency band that is not very effectively used, and insert high-definition information (high-frequency components of the brightness signal) into it.
そして受信側でこれをもとに戻し高精細画像として受信
再生するものである。このとき、挿入することによって
既存受像機で受像したときの画質が劣化しないようにす
るものである。Then, on the receiving side, this is returned to its original state and received and reproduced as a high-definition image. At this time, the insertion prevents the image quality from deteriorating when the image is received by an existing receiver.
以上の目的を達成するため、NTSCテレビジョン信号
の信号成分を、時間−垂直周波数領域で表現するときの
色信号成分と共役ならび同じ領域の水平周波数の低い領
域に高精細情報を変調して多重化するようにしたもので
ある。In order to achieve the above objectives, the signal component of the NTSC television signal is conjugated with the color signal component when expressed in the time-vertical frequency domain, and high-definition information is modulated and multiplexed in the low horizontal frequency region of the same region. It was designed to make it easier to understand.
、〔発明の実施例〕
以下、第3図に示す実施例により構成を説明する。この
例は最も多くの情報をつめ込む場合を示している。, [Embodiments of the Invention] The configuration will be described below with reference to the embodiment shown in FIG. This example shows the case where the most amount of information is packed.
図においては、時間−垂直周波数(f−ν)領域におい
て、まず第1章限、第3章限にY旧′と示した部分に、
Y H1と記した4、4 MHz〜8.4MHzの成分
を移す。これには、従来方式に類似の方法により周知の
周波数シフトの手法を用いることができる。In the figure, in the time-vertical frequency (f-ν) domain, first, in the parts indicated as Y old' in the first and third chapters,
Transfer the 4,4 MHz to 8.4 MHz component marked as Y H1. For this purpose, a well-known frequency shifting technique can be used in a manner similar to the conventional method.
また、第2.第4章限には、YB2(8,4MHz−1
0,4MHz)成分を、C成分の下方の周波数領域YH
2に移す。すなわち、この2つの章限では、断面Iでは
、YB2が、断面■ではC成分が多重化されることにな
る。Also, the second. For Chapter 4, YB2 (8,4MHz-1
0.4MHz) component in the frequency region YH below the C component.
Move to 2. That is, in these two chapters, the YB2 component is multiplexed in the section I, and the C component is multiplexed in the section ■.
これらの周波数シフトされた信号をもとに戻す処理、特
に時空間フィルタ等についてはすでに公知であるから省
略する。Processing to return these frequency-shifted signals to their original state, especially spatio-temporal filters, etc., are already known and will therefore be omitted.
本発明によれば、従来の第1方式、第2方式の類推によ
り、さらに多くの周波数領域を高精細情報のために利用
することにより、水平方向に高精細なTV情報を送るこ
とができる。According to the present invention, by analogy with the conventional first and second methods, it is possible to send high-definition TV information in the horizontal direction by using more frequency regions for high-definition information.
なお、現実には1本発明の実施例は最も多くつめ込んだ
場合であり、その中間段階、すなわち、一部つめ込まず
に空けておくなどの方法もとり得ることは明らかである
。Incidentally, in reality, one embodiment of the present invention is a case in which the largest number of containers are packed, and it is clear that an intermediate stage between the two, that is, a method in which a portion is left empty without being packed, is also possible.
第1図、第2図は、従来の公知の方式において、高精細
情報をつめ込む方法を、水平−垂直一時間周波数(μm
v−f)領域で示した説明図である。
第3図は第1図、第2図と同様の手法で本発明に第 2
餡
第 3 国Figures 1 and 2 show a method of packing high-definition information in a conventional known method using a horizontal-vertical temporal frequency (μm).
FIG. FIG. 3 shows the second embodiment of the present invention using the same method as in FIGS. 1 and 2.
Bean paste 3rd country
Claims (1)
周波数領域で表現するときの色信号成分と共役な位置な
らびに同じ位置の水平周波数の低い領域に、高精細情報
を変調して多重化することを特徴とするテレビジョン信
号の処理方式。The signal component of an NTSC television signal is modulated and multiplexed with high-definition information at a position conjugate with the color signal component when expressed in the time-vertical frequency domain, and at a low horizontal frequency region at the same position. A distinctive television signal processing method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59025024A JPS60170394A (en) | 1984-02-15 | 1984-02-15 | Processing system of television signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59025024A JPS60170394A (en) | 1984-02-15 | 1984-02-15 | Processing system of television signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS60170394A true JPS60170394A (en) | 1985-09-03 |
Family
ID=12154340
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59025024A Pending JPS60170394A (en) | 1984-02-15 | 1984-02-15 | Processing system of television signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60170394A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6271391A (en) * | 1985-09-25 | 1987-04-02 | Hitachi Ltd | Television receiver |
JPS62250790A (en) * | 1986-04-24 | 1987-10-31 | Nippon Hoso Kyokai <Nhk> | Television signal multiplexing system |
JPS6378685A (en) * | 1986-09-22 | 1988-04-08 | Matsushita Electric Ind Co Ltd | Method for forming television signal |
JPS6379488A (en) * | 1986-09-22 | 1988-04-09 | Matsushita Electric Ind Co Ltd | Television signal forming method |
JPS63144686A (en) * | 1986-11-29 | 1988-06-16 | ドイチエ・トムソン‐ブラント・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Method of improving resolution compatibly in television system |
US4926244A (en) * | 1987-09-14 | 1990-05-15 | General Electric Company | Extended definition widescreen television signal processing system with alternate subcarrier |
-
1984
- 1984-02-15 JP JP59025024A patent/JPS60170394A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6271391A (en) * | 1985-09-25 | 1987-04-02 | Hitachi Ltd | Television receiver |
JPS62250790A (en) * | 1986-04-24 | 1987-10-31 | Nippon Hoso Kyokai <Nhk> | Television signal multiplexing system |
JPS6378685A (en) * | 1986-09-22 | 1988-04-08 | Matsushita Electric Ind Co Ltd | Method for forming television signal |
JPS6379488A (en) * | 1986-09-22 | 1988-04-09 | Matsushita Electric Ind Co Ltd | Television signal forming method |
JPS63144686A (en) * | 1986-11-29 | 1988-06-16 | ドイチエ・トムソン‐ブラント・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Method of improving resolution compatibly in television system |
JP2559772B2 (en) * | 1986-11-29 | 1996-12-04 | ドイチエ・トムソン‐ブラント・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | How to make resolution compatible in television systems |
US4926244A (en) * | 1987-09-14 | 1990-05-15 | General Electric Company | Extended definition widescreen television signal processing system with alternate subcarrier |
US5025309A (en) * | 1987-09-14 | 1991-06-18 | Rca Licensing Corporation | Extended definition widescreen television signal processing system |
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