JPH0326953B2 - - Google Patents
Info
- Publication number
- JPH0326953B2 JPH0326953B2 JP939784A JP939784A JPH0326953B2 JP H0326953 B2 JPH0326953 B2 JP H0326953B2 JP 939784 A JP939784 A JP 939784A JP 939784 A JP939784 A JP 939784A JP H0326953 B2 JPH0326953 B2 JP H0326953B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- image signal
- definition television
- frames
- frame
- 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.)
- Expired - Lifetime
Links
- 230000033001 locomotion Effects 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 8
- 238000012850 discrimination method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 230000002123 temporal effect Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
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Description
【発明の詳細な説明】
（技術分野）
本発明は、高品位テレビジヨン画像信号を所定
の間隔でサブサンプルして低密度画像信号とし、
この信号を狭帯域の伝送路などで順次に伝送する
サブサンプル伝送方式において、伝送された信号
から元の画像信号とくに動きのある画像信号をよ
り忠実に復元しようとするものである。Detailed Description of the Invention (Technical Field) The present invention subsamples a high-definition television image signal at predetermined intervals to produce a low-density image signal,
In a sub-sampling transmission method in which this signal is transmitted sequentially over a narrowband transmission path, the attempt is made to more faithfully restore the original image signal, especially an image signal with movement, from the transmitted signal.
（従来技術）
一般に、高品位テレビジヨンのサブサンプル伝
送方式においては、動き部分と静止部分とに分け
て、動き部分は空間内挿とし、静止部分はテンポ
ラル内挿とする使いわけが必要である。動き部分
の検出方法としては、高品位テレビジヨン画像信
号の隣接するフレーム間の差信号の絶対値を求め
て、その有意差を示す部分を動き部分とする方法
が有効であるが、サブサンプル方式においては、
受信側で正確な動き部分検出が困難である。その
理由は、本願発明者らが先に出願した実願昭58−
160530「サブサンプル画像信号内挿装置」の実施
例の説明の冒頭で指摘しているように、画像信号
のサブサンプルを２フレームにて一巡させ、各フ
レーム乃至フイールド内においては１点おきのサ
ンプル点データを伝送する場合の例については、
受信側では１フレーム離れた信号を得ることがで
きないからである。従つて２フレーム離れた１フ
レームおきの２フレーム間差信号を用いることに
なり、第１図のような画像信号では、実際は動い
ているのであるが、２フレーム離れた２フレーム
間差では動いていないように検出される場合があ
る。(Prior art) In general, in sub-sampling transmission systems for high-definition television, it is necessary to separate moving parts and static parts, and use spatial interpolation for the moving parts and temporal interpolation for the static parts. . An effective method for detecting moving parts is to find the absolute value of the difference signal between adjacent frames of a high-definition television image signal and treat the part that shows a significant difference as a moving part, but the sub-sampling method In,
It is difficult to accurately detect moving parts on the receiving side. The reason is that the inventors of the present application filed an earlier application filed in 1983.
As pointed out at the beginning of the explanation of the embodiment of 160530 "Sub-sample image signal interpolation device", the sub-samples of the image signal are rotated in two frames, and every other sample is inserted in each frame or field. For an example of transmitting point data,
This is because the receiving side cannot obtain a signal that is one frame apart. Therefore, the difference signal between two frames, which is every other frame two frames apart, is used.In the image signal shown in Figure 1, there is actually movement, but in the difference between two frames, which are two frames apart, there is no movement. It may be detected that there is no such thing.
これを防ぐために第２図に示したように、サブ
サンプルされた到来信号にローパスフイルターを
入れて、擬似的に隣接するフレーム間すなわち１
フレーム間差信号を作つて動き検出をすることが
考えられるが、このようにすると、サブサンプル
による折り返し成分が低域に落ちる部分において
は、静止画でも動いているように検出されてしま
うことがある。従つて単純に上述した方法による
１フレーム間差信号使用の動き検出方法は用いる
ことができない。 To prevent this, as shown in Figure 2, a low-pass filter is inserted into the subsampled incoming signal to create a pseudo-interference between adjacent frames, that is, one
It is conceivable to perform motion detection by creating an interframe difference signal, but if you do this, even still images may be detected as moving in the parts where the aliasing components due to subsamples fall into the low range. be. Therefore, the motion detection method using the one-frame difference signal simply as described above cannot be used.
（発明の要点）
本発明は、上述した従来の問題を解決して欠点
を除去し、受信側で２フレーム間差信号しか得ら
れないサブサンプル伝送方式で、１フレーム間差
信号をたくみに使用して画像の動き情報を精度よ
く得ようとするものである。すなわち、本発明の
高品位テレビジヨンサンプル伝送方式の動き検出
方法は、高品位テレビジヨン画像信号に所定の間
隔でｎフレーム（ｎ２の正の整数）一巡のサブ
サンプリングを施して形成した低密度画像信号を
狭帯域伝送路を介して伝送するサブサンプル伝送
方式において、送信側では、前記高品位テレビジ
ヨン画像信号の画面を区切る複数のブロツクの各
ブロツク毎に画像の動き量に基づく選択判別信号
を形成して前記低密度画像信号とともに伝送し、
受信側では、前記低密度画像信号から前記高品位
テビジヨン画像信号を復元する際に、前記選択判
別信号により選択した判別方法に従い、静止画像
と動き画像とを相互に判別して画像の動き検出を
行なうようにしたことを特徴とするものである。(Summary of the Invention) The present invention solves the above-mentioned conventional problems and eliminates the drawbacks, and is a sub-sample transmission method in which only a two-frame difference signal can be obtained on the receiving side, and a one-frame difference signal is skillfully used. The aim is to obtain image motion information with high accuracy. That is, the motion detection method of the high-definition television sample transmission system of the present invention is based on a low-density image formed by subjecting a high-definition television image signal to subsampling one round of n frames (a positive integer of n2) at predetermined intervals. In a sub-sampling transmission method in which a signal is transmitted via a narrowband transmission path, the transmission side sends a selection discrimination signal based on the amount of image movement to each of a plurality of blocks that partition the screen of the high-definition television image signal. forming and transmitting together with the low density image signal;
On the receiving side, when restoring the high-quality TV image signal from the low-density image signal, image motion detection is performed by mutually discriminating still images and moving images according to the discrimination method selected by the selection discrimination signal. It is characterized by what it does.
（実施例）
従来技術の項でも述べたように、画像信号のサ
ンプリングを２フレームにて一巡させ、各フレー
ム乃至フイールド内においては１点おきのサンプ
ル点データを伝送する場合の例については、動き
検出にサブサンプル信号から得られる２フレーム
間差信号を用いると、第１図の場合では動き画像
を静止画と誤判別することがある。また第２図の
ように受信側で１フレーム検出を用いた場合、高
域成分を持つたブロツクは、仮に静止部分でも１
フレーム間差が出てしまい動画と誤判別され、画
像上折り返しが発生してチラチラすることがあ
る。(Embodiment) As mentioned in the section of the prior art, for an example in which sampling of an image signal is carried out once every two frames and data of every other sample point is transmitted in each frame or field, the motion If a two-frame difference signal obtained from a sub-sampled signal is used for detection, a moving image may be erroneously determined as a still image in the case of FIG. Furthermore, when one-frame detection is used on the receiving side as shown in Figure 2, blocks with high-frequency components can be detected even in stationary parts.
Differences between frames may appear, causing the image to be misidentified as a video, causing aliasing and flickering on the image.
本発明の基本的な考え方は、受信側の内挿選択
のための動き情報判別に、画面のブロツク毎に、
２フレーム間差信号を使用するのみにするか、１
フレーム間差信号と２フレーム間差信号との両者
を併用するかを選択判別するもので、この選択判
別信号を、送信側で、高品位テレビジヨン画像信
号の１画面を複数のブロツクに分割し、そのブロ
ツク毎に画像の動き量にもとづき、上記使いわけ
のための前記選択判別信号をサブサンプルされた
低密度画像信号とともに伝送し、受信側ではブロ
ツク毎に上記選択判別信号を用いてより忠実に元
の高品位テレビジヨン画像信号を復元せんとする
ものである。 The basic idea of the present invention is to determine motion information for interpolation selection on the receiving side by
Either use only the difference signal between two frames, or
It selects and determines whether to use both the inter-frame difference signal and the two-frame difference signal together, and this selection determination signal is used on the transmitting side to divide one screen of the high-definition television image signal into multiple blocks. , the selection discrimination signal for the above-mentioned usage is transmitted together with the subsampled low-density image signal based on the amount of image movement for each block, and on the receiving side, the selection discrimination signal is used for each block to achieve higher fidelity. The aim is to restore the original high-definition television image signal.
以下に図面を参照して実施例につき本発明を詳
細に説明する。 The invention will be explained in detail below by way of example embodiments with reference to the drawings.
なお、説明を簡単かつ具体的にするため、画像
信号のサンプリングを２フレームにて一巡させ、
各フレーム乃至フイールド内においては１点おき
のサンプル点データを伝送し、さらに、受信側で
サブサンプル伝送されてきた信号より、画面のブ
ロツク毎に空間内挿またはテンポラル内挿して次
落信号部を補間し、原高品位テレビジヨン画像信
号を復元するため、前記ブロツク毎の原高品位テ
レビジヨン画面が、動画か静止画かを判別する情
報を、２フレーム間差信号のみから得るか（２フ
レーム間差判別方法）、１フレーム間差信号と２
フレーム間差信号との両者を比較してより大なる
信号を判別に用いるか（併用判別方法）、いずれ
かを選択判別する信号を送信側で用意する例につ
いて本発明を説明するが、本発明はこの例に限ら
れるものではない。 In addition, in order to make the explanation simple and concrete, the sampling of the image signal is performed once in two frames,
Every other sample point data is transmitted within each frame or field, and the receiving side performs spatial or temporal interpolation for each block of the screen from the sub-sample transmitted signal to obtain the next dropped signal part. In order to interpolate and restore the original high definition television image signal, is it possible to obtain information for determining whether the original high definition television screen for each block is a moving image or a still image only from the difference signal between two frames? (interval difference determination method), 1 frame difference signal and 2
The present invention will be described with reference to an example in which the transmitting side prepares a signal for selecting and determining one of the interframe difference signals and comparing the two and using the larger signal for discrimination (combined discrimination method). is not limited to this example.
第３図に本発明構成の上述実施例の送信側のブ
ロツク線図を示す。本実施例では前記選択判別信
号を送信側で発生しサブサンプルした低密度画像
信号とともに伝送している。さらに第４図に、送
信側実施例ブロツク線図に第３図を用いた場合の
対応する受信側の実施例ブロツク線図を示す。 FIG. 3 shows a block diagram of the transmitting side of the above-described embodiment of the present invention. In this embodiment, the selection discrimination signal is generated on the transmitting side and transmitted together with the subsampled low-density image signal. Furthermore, FIG. 4 shows a block diagram of an embodiment of the receiving side corresponding to the case where FIG. 3 is used as the block diagram of the transmitting side embodiment.
第３図の入力はサブサンプルされる前の高品位
テレビジヨン画像信号で、この入力信号から図示
のようにＡ，Ｂ，Ｃの３種の絶対値差信号を作
る。Ａは画像信号の２フレーム間差信号であり、
Ｂは画像信号の１フレーム間差信号である。また
さらに、Ｃは原画像信号をサブサンプルした信号
C2、これを内挿処理して欠落信号部をソフトに
復元した信号（原画像信号をローバスフイルタ処
理したものとほぼ等しい、擬似現フレーム信号と
呼称する）C1と原画像信号を直接ローパスフイ
ルタ処理した信号（原画像信号の低域成分）C3
との差信号（現フレーム差信号と呼称する）であ
る。前記現フレーム差信号Ｃは通常は大きくはな
いが、原画像が静止画で高域成分を多く含む場合
には、サブサンプリング処理時に折り返し成分が
低域におちて、信号C1と信号C3との差、すなわ
ちＣが異常に大きくなり、この情報にもとづく選
択判別信号を受信側に送信することにより、従来
問題とされたきた一欠点を除去することができ
る。 The input in FIG. 3 is a high-definition television image signal before being subsampled, and from this input signal, three types of absolute value difference signals A, B, and C are generated as shown. A is the difference signal between two frames of the image signal,
B is a one-frame difference signal of the image signal. Furthermore, C is a signal obtained by subsampling the original image signal.
C 2 , a signal obtained by interpolating this and softly restoring the missing signal part (which is almost equivalent to the low-pass filter processing of the original image signal, and is called a pseudo-current frame signal) C 1 and the original image signal directly Low-pass filtered signal (low frequency component of original image signal) C 3
(referred to as the current frame difference signal). The current frame difference signal C is usually not large, but if the original image is a still image and contains many high-frequency components, the aliasing component falls in the low-frequency range during subsampling processing, resulting in signal C 1 and signal C 3. By transmitting a selection determination signal based on this information to the receiving side, one of the conventional drawbacks can be eliminated.
次に上記Ａ，Ｂ，C3種の信号をロジツク回路
１０に導入する。ロジツク回路に導入されたＡ，
Ｂ，C3種の信号は、あらかじめ設定された夫々
の基準値と比較され、１または０の論理値に変換
される（１は基準値より大、０は基準値より小）。
これらの論理値は、次に論理演算されるのである
が、その論理演算の構成はその入力、出力が以下
の条件を満足するように組立てられる。 Next, the three types of signals A, B, and C mentioned above are introduced into the logic circuit 10. A introduced into logic circuit,
The three types of signals B and C are compared with respective preset reference values and converted into logical values of 1 or 0 (1 is greater than the reference value, 0 is smaller than the reference value).
These logical values are then subjected to logical operations, and the configuration of the logical operations is such that the inputs and outputs satisfy the following conditions.
(1) Ａが１，Ｂが１のとき出力は常に１、 (2) Ａが０，Ｂが１，Ｃが０のとき出力は１、 (3) Ａが０，Ｂが１，Ｃが１のとき出力は０、 (4) 入力が他の条件では出力は０。(1) When A is 1 and B is 1, the output is always 1, (2) When A is 0, B is 1, and C is 0, the output is 1, (3) When A is 0, B is 1, and C is 1, the output is 0, (4) If the input is under other conditions, the output is 0.
ここでＡ＝１とは２フレーム間差信号に、Ｂ＝
１とは１フレーム間差信号に夫々有意差がある時
で、本発明で一応動面と判別される領域で、静止
画と区別されるものである。またＣ＝１はＣが非
常に大なる時に対応する。すなわち原画像が静止
画で高域成分を多く含む場合に対応する。 Here, A=1 means the difference signal between two frames, and B=
1 means that there is a significant difference between the frame-to-frame difference signals, and is an area that is tentatively determined to be a moving surface in the present invention, and is distinguished from a still image. Further, C=1 corresponds to the case where C is very large. In other words, this corresponds to the case where the original image is a still image and contains many high-frequency components.
論理演算後の信号は選択判別信号（１または
０）となり、原画像信号のサブサンプルした低密
度画像信号とともに伝送される。この時選択判別
信号は先にも述べたように原画面のブロツク毎に
付加される。原画面はなるべく小さいブロツクに
分割するのが望ましいが、実際にはたとえば１ブ
ロツクが16ライン×32画素程度である。１ブロツ
ク領域の大きさは、たとえば動画部と静止画部と
が同一ブロツク領域に共存していても、復元画面
の不自然さが目立たぬ程度であればよい。 The signal after the logical operation becomes a selection determination signal (1 or 0) and is transmitted together with a low-density image signal obtained by subsampling the original image signal. At this time, the selection determination signal is added to each block of the original screen as described above. It is desirable to divide the original screen into as small blocks as possible, but in reality, one block is approximately 16 lines x 32 pixels, for example. The size of one block area may be such that, for example, even if a moving image part and a still image part coexist in the same block area, the unnaturalness of the restored screen will not be noticeable.
第４図の入力は伝送されてきた高品位テレビジ
ヨンサブサンプル信号であり、これらからまず２
フレーム間差信号Ａおよび擬似１フレーム間差信
号Ｂを用意する。一方データ分離回路６を使つて
入力信号より選択判別信号を分離し、一端コント
ロール用メモリ５に蓄えられた後に、映像信号と
タイミングを合わせて切替器７を制御する。送信
側より送られてくる選択判別信号の論理値が１の
時切替器７のスイツチは閉であり、０の時は開で
ある。切替器７のスイツチが閉の時は、Ａ，Ｂ両
信号が比較され、より大なる信号が最大値検出４
により選択される。また切替器７のスイツチが開
の時は、Ａ信号が常時出力される。第４図の出力
信号は別途動き判別回路に誘導され、サブサンプ
ル受信信号の欠落信号部を空間内挿かテンポラル
内挿かして元の高品位テレビジヨン信号を復元す
る。 The input in Figure 4 is the transmitted high-definition television sub-sampled signal.
An inter-frame difference signal A and a pseudo one-frame difference signal B are prepared. On the other hand, the selection discrimination signal is separated from the input signal using the data separation circuit 6, and after being stored in the control memory 5, the switch 7 is controlled in synchronization with the video signal. When the logical value of the selection discrimination signal sent from the transmitting side is 1, the switch of the switch 7 is closed, and when it is 0, the switch is open. When the switch of the selector 7 is closed, both the A and B signals are compared, and the larger signal is detected as the maximum value 4.
Selected by Further, when the switch 7 is open, the A signal is always output. The output signal of FIG. 4 is separately guided to a motion discrimination circuit, and the missing signal portion of the sub-sampled received signal is spatially interpolated or temporally interpolated to restore the original high-definition television signal.
以上上述の実施例では、原高品位テレビジヨン
画像信号のサブサンプルを２フレームにて一巡さ
せ、各フレーム乃至フイールド内においては１点
おきのサンプル点データを伝送する例について述
べたが、本発明はこの例に限られることなく、サ
ンプリング一巡のフレーム数は３フレームでも４
フレームでも一般にはｎフレーム（ｎ２の正の
整数）でよい。 In the embodiments described above, an example has been described in which the subsamples of the original high-definition television image signal are passed around in two frames, and every other sample point data is transmitted in each frame or field. is not limited to this example, the number of frames in one round of sampling can be 4 even if it is 3 frames.
In general, there may be n frames (n2 is a positive integer).
ｎフレーム一巡の場合、２フレーム一巡の２フ
レーム間差に対応するものはｎフレーム間差とな
り、併用判別方法はｎフレーム間差と１フレーム
間差との比較になる。すなわち現フレームが（ｎ
＋１）フレームとすれば、ｎフレーム間差は１フ
レームと（ｎ＋１）フレームとの差であり、１フ
レーム間差はｎフレームと（ｎ＋１）フレームと
の差にある。 In the case of one round of n frames, the difference between two frames corresponding to the one round of two frames is the difference between n frames, and the method for determining the combination is a comparison between the difference between n frames and the difference between one frame. That is, the current frame is (n
+1) frame, the n-frame difference is the difference between 1 frame and (n+1) frame, and the 1-frame difference is the difference between n frame and (n+1) frame.
すなわち本発明を一般化すると、ｎフレーム一
巡のサブサンプル伝送方式において、受信側での
判別情報にｎフレーム間差信号のみを使用するか
（ｎフレーム間差判別方法）、１フレーム間差信号
とｎフレーム間差信号との比較も行なうか（併用
判別方法）、いずれかを選択判別する信号を送信
側で用意するということになる。 In other words, if the present invention is generalized, in a sub-sample transmission system of one round of n frames, only the n-frame difference signal is used for discrimination information on the receiving side (n-frame difference determination method), or the 1-frame difference signal and Either a comparison with the n-frame difference signal is performed (combined determination method), or a signal for selectively determining one of them is prepared on the transmitting side.
ｎフレーム一巡のｎを大きくとればそれだけ伝
送帯域は狭帯域化されるが、対象が高品位テレビ
ジヨン画像信号ということで、実用的にはｎは
高々４どまりであろう。 The transmission band becomes narrower as n for one round of n frames is increased, but since the target is a high-definition television image signal, practically n will be no more than 4.
また上述の２フレーム一巡の実施例で述べてき
た論理値１または０のとり方は逆でもよく、第４
図切替器７のスイツチ開，閉との関連で選択すれ
ばよい。 Furthermore, the method of taking the logical value 1 or 0 described in the above-mentioned example of one round of two frames may be reversed, and the fourth
The selection may be made in relation to whether the switch of the figure changer 7 is opened or closed.
（効果）
以上の説明から明らかなように、本発明によれ
ば、サブサンプルされて伝送されてきた高品位テ
レビジヨン受信信号から、サブサンプル受信信号
の欠落信号部を空間内挿かテンポラル内挿かして
元の画像信号を従来よりより忠実に復元すること
ができる。特に従来静止画でも高域成分を有する
場合とか、第１図のような動きをする高品位テレ
ビジヨン画像信号の場合に、動画静止画の判別を
誤つて忠実な復元のできなかつたものでも、動か
静かの正しい判別をして忠実に元の高品位テレビ
ジヨン画像信号を復元することができる。(Effects) As is clear from the above description, according to the present invention, from a high-definition television reception signal that has been subsampled and transmitted, the missing signal portion of the subsampled reception signal can be replaced by spatial interpolation or temporal interpolation. In this way, the original image signal can be restored more faithfully than before. In particular, in the case of conventional still images that have high-frequency components, or in the case of high-definition television image signals with movement as shown in Figure 1, even if a moving still image was misjudged and faithful restoration could not be performed. The original high-definition television image signal can be faithfully restored by correctly determining whether it is moving or not.
第１図は２フレーム相関の態様の例を順次に示
す信号波形図、第２図はサブサンプルされた到来
信号から疑似的に１フレーム間差信号を作つて動
き検出をする従来構成の例を示すブロツク線図、
第３図は本発明構成の１例を示す送信側のブロツ
ク線図（選択判別信号発生の実施例）、第４図は
本発明構成の１例を示す受信側のブロツク線図
（選択判別信号受信の実施例）である。
１……フレームメモリ、２……ローパスフイル
タ、３……絶対値検出、４……最大値検出、５…
…コントロール用メモリ、６……データ分離回
路、７……切替器、８……サブサンプリングエン
コーダ、９……内挿回路、１０……ロジツク回
路、１１……メモリコントロール。
Fig. 1 is a signal waveform diagram sequentially showing examples of aspects of two-frame correlation, and Fig. 2 is an example of a conventional configuration in which motion detection is performed by creating a pseudo one-frame difference signal from a subsampled incoming signal. A block diagram showing
FIG. 3 is a block diagram of the transmitting side (an example of generation of selection discrimination signal) showing an example of the configuration of the present invention, and FIG. 4 is a block diagram of the receiving side (selection discrimination signal generation) showing an example of the configuration of the present invention. Example of reception). 1...Frame memory, 2...Low pass filter, 3...Absolute value detection, 4...Maximum value detection, 5...
...Control memory, 6...Data separation circuit, 7...Switcher, 8...Subsampling encoder, 9...Interpolation circuit, 10...Logic circuit, 11...Memory control.
Claims (1)
ｎフレーム（ｎ２の正の整数）一巡のサブサン
プリングを施して形成した低密度画像信号を狭帯
域伝送路を介して伝送するサブサンプル伝送方式
において、送信側では、前記高品位テレビジヨン
画像信号の画面を区切る複数のブロツクの各ブロ
ツク毎に画像の動き量に基づく選択判別信号を形
成して前記低密度画像信号とともに伝送し、受信
側では、前記低密度画像信号から前記高品位テレ
ビジヨン画像信号を復元する際に、前記選択判別
信号により選択した判別方法に従い、静止画像と
動き画像とを相互に判別して画像の動き検出を行
なうようにしたことを特徴とする高品位テレビジ
ヨンサブサンプル伝送方式における動き検出方
法。1. In a sub-sampling transmission method in which a low-density image signal formed by subjecting a high-definition television image signal to subsampling for one round of n frames (a positive integer of n2) at predetermined intervals is transmitted via a narrowband transmission path, On the transmitting side, a selection discrimination signal is formed based on the amount of image movement for each block of a plurality of blocks dividing the screen of the high-definition television image signal, and is transmitted together with the low-density image signal, and on the receiving side, When restoring the high-definition television image signal from the low-density image signal, image motion is detected by mutually discriminating still images and moving images according to the discrimination method selected by the selection discrimination signal. A motion detection method in a high-definition television sub-sample transmission system, characterized in that:
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59009397A JPS60153682A (en) | 1984-01-24 | 1984-01-24 | Detection system of movement in high-definition tv subsample transmission system |
| EP84112565A EP0146713B2 (en) | 1983-10-19 | 1984-10-18 | Multiplex subsampling transmission system for a high definition color television picture signal |
| DE8484112565T DE3479953D1 (en) | 1983-10-19 | 1984-10-18 | Multiplex subsampling transmission system for a high definition color television picture signal |
| CA000465762A CA1213359A (en) | 1983-10-19 | 1984-10-18 | Multiplex subsampling transmission system for a high definition color television picture signal |
| US07/033,878 US4745459A (en) | 1983-10-19 | 1987-04-02 | Divisionally time-compressed subsample transmission and motion-compensated reproduction system for a high definition color television picture signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59009397A JPS60153682A (en) | 1984-01-24 | 1984-01-24 | Detection system of movement in high-definition tv subsample transmission system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60153682A JPS60153682A (en) | 1985-08-13 |
| JPH0326953B2 true JPH0326953B2 (en) | 1991-04-12 |
Family
ID=11719285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59009397A Granted JPS60153682A (en) | 1983-10-19 | 1984-01-24 | Detection system of movement in high-definition tv subsample transmission system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60153682A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62235886A (en) * | 1986-04-04 | 1987-10-16 | Nippon Tv Housoumou Kk | High resolution television system |
| JPS62245786A (en) * | 1986-04-17 | 1987-10-27 | Nippon Tv Housoumou Kk | High resolution television system |
| JPS6313590A (en) * | 1986-07-04 | 1988-01-20 | Nippon Tv Housoumou Kk | High definition television system |
| JPS6313595A (en) * | 1986-07-04 | 1988-01-20 | Nippon Tv Housoumou Kk | Television system |
| JPS6313596A (en) * | 1986-07-04 | 1988-01-20 | Nippon Tv Housoumou Kk | Television system |
| JP2540809B2 (en) * | 1986-07-30 | 1996-10-09 | ソニー株式会社 | High efficiency encoder |
| JP2814482B2 (en) * | 1987-07-20 | 1998-10-22 | ソニー株式会社 | High efficiency code decoding apparatus and decoding method |
-
1984
- 1984-01-24 JP JP59009397A patent/JPS60153682A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60153682A (en) | 1985-08-13 |
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