1286443 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種移動偵測系統及方法，特別是關於一 種用於顯示畫面之移動偵測系統及方法。 【先前技術】 參考圖1，其顯示習知之用於顯示畫面之移動偵測系統方 塊示意圖。該習知之移動偵測系統10包括：一第一視框延 遲器（Frame Delay)102、第二視框延遲器103、一減法器 104、一加法器105、一數位低通濾波器1〇6、一第一取絕對 值電路107、一第二取絕對值電路1 〇8、一第一比較器丨η、 一第二比較器112及一決定邏輯電路i i 3。一電視系統 (NTSC/PAL/SECAM)顯示畫面之視訊訊號丨〇丨通常包括亮 度訊號（Y)及彩度訊號（C)。 該視訊訊號101經過該第一視框延遲器1 〇2之延遲，該減 法器104之相減後，通過該數位低通濾波器1〇6濾除高頻成 分’再經该第一取絕對值電路1 〇 7，即可計算一亮度差值 1 〇9(Ydiff)。另外’該視訊訊號1 〇1經過該第一視框延遲器1 〇2 及該第二視框延遲器1 〇3之延遲，該加法器1 〇5之相加後， 再經§亥第一取絕對值電路10 8，即可計算一彩度差值 110(Cdiff) ° 該第一比較器111用以比較該亮度差值及一亮度臨界直 (Yth)，若該亮度差值較大，則視為晝面移動，該第一比較 器111之輸出為1 ;反之，若該亮度差值較小，則視為畫面 未移動，該第一比較器ill之輸出為0。該第二比較器112用 102807.doc 1286443 以比較該彩度差值及—姜 ^ 办度界直（cth)，若該彩度差值較 大，則視為晝面移動，兮笙一 初e亥苐一比杈态112之輸出為1 ;反之， ^彩又差值軚小，則視為畫面未移動，該第二比較器112 之輸出為0。 、疋泛輯電路113用以依據該第一比較器111及該第二 比較益112之輸出，決定二維移動控制訊號114及三維移動 控制訊號115。當轉叙@ 女υ »咕 移動時，亦即该第一比較器丨丨i或該第二 比較器1 1 2之輸出兔！ ^ - LL, ^ ^ 為1時’该一維移動控制訊號114設定為 、70王輸出一維解_訊號，該三維移動控制訊號丨丨5設定 為完全不輸出三維解調訊號；#視為未移動時，亦即該 第比車乂器111及该第二比較器i i 2之輸出為〇時，該二維移 動控制訊號114設定為〇，完全不輸出二維解調訊號，該三 維移動控制訊號115設定為丨，完全輸出三維解調訊號。 習知技術可參考美國專利編號：uS5,305，120， US4,934,667，US4,868,655，US4,775，m。該習知之移動 偵測系統10僅能於二維解調訊號及三維解調訊號間切換， 因其所採用之方式為二分法，故在動態晝面上容易出現跳 躍與抖動（jitter)現象，影響晝面品質。 因此，實有必要提供一種創新且富進步性之移動偵測系 統及方法，以解決上述問題。 【發明内容】 本發明提供一種用於顯示晝面之移動偵測方法，包括以 下步驟：（a)取得一彩度差值及一亮度差值；（b)比較該彩度 差值與一彩度臨界值，當該彩度差值大於該彩度臨界值 102807.doc -6- 1286443 時，輸出一設定比例之二維移動控制訊號；（c)當該彩度差 值小於該彩度臨界值時，比較該亮度差值與一亮度臨界 值虽该壳度差值大於該亮度臨界值時，輸出該設定比例 之二維移動控制訊號；（d)當該亮度差值小於該亮度臨界值 時，依據該亮度差值與該亮度臨界值，計算得一第一比例 值及一第二比例值；及（e)輸出一第一比例值之二維移動控 制訊號及一第二比例值之三維移動控制訊號。 本發明提供一種用於顯示畫面之移動偵測系統，其包括·· 〆除法器、一第一比較器、一第一多工器、一第二比較器、 -第二多工器及一減法器；該除法器用以依據一亮度差值 及一亮度臨界值，計算得一第一比例值；該第一比較器用 以比較該亮度差值及該亮度臨界值，輸出一第一符號位 元；該第一多工器依據該第一符號位元，選擇該第一比例 值或一第一設定值之其中之一，為一第一輸出值；該第二 比較器用以比較一彩度差值及一彩度臨界值，輸出一第二 符號位元；該第二多工器依據該第二符號位元，選擇該第 /輸出值或一第二設定值之其中之一，為二維移動控制訊 號；該減法器用以計算一第三設定值與該二維移動控制訊 號之差值，為三維移動控制訊號。 利用本發明之移動偵測方法及系統，可以分別計算得該 一維移動控制訊號及該三維移動控制訊號所佔之比例。依 據该二維移動控制訊號及該三維移動控制訊號所佔之比 例’計算得不同比例之二維解調訊號及三維解調訊號，而 非僅為在二維解調訊號或三維解調訊號二者其中之一切 102807.doc 1286443 換。因此，本發明之移動偵 夕動偵測糸統及方法可以依據實際畫 面内容進行動態調整，消除 月牙、跳動與抖動現象，以提升畫面 品質。 一 【實施方式】 參考圖2所示’其顯示本發明 _ 知月用於顯不畫面之移動偵測系 統方塊示意圖。本發明用於顯示畫面之移動债測系統20包 括：-第-視框延遲器2〇2、—第二視框延遲器2〇3、一第 二減法器204、-加法器2〇5、_數位低通渡波器細、一第 -取絕對值電路2G7、—第：取絕對值電路扇及—移動横 測器211。其中該第一視框延遲器2〇2、該第二視框延遲器 2〇3、該第二減法器204、該加法器2〇5、該數位低通渡波器 206、該第一^絕對值電路2〇7及該第二取絕對值電路谓 係用以計算得一亮度差值2〇9(Ydiff)及一彩度差值 21 〇(Cdiff) ’係與上述之習知技術相同，在此不加贅述。 參考圖3,其顯示本發明心顯示畫面之移動㈣方法之 流程不意圖。如步驟301所示，首先取得該亮度差值（Ydw) 及該彩度差值（cdiff)。該亮度差值（Ydiff)及該彩度差值（Cdiff) 可以利用上述之元件及方法計算，亦可利用其他之元件或 方法計算而得。參考步驟3〇2所示，比較該彩度差值（Cdiff) 與彩度酞界值（cth)。當該彩度差值大於該彩度臨界值時 (cdiff2 cth) ’輸出一設定比例之二維移動控制訊號。在本實 施例中，該設定比例之二維移動控制訊號為〗，且設定三維 移動控制訊號為〇，如步驟303所示。 參考步驟304，當該彩度差值小於該彩度臨界值時，再比 I02807.doc 1286443 較該亮度差值（Ydiff)與一亮度臨界值（Yth)。當該亮度差值大 於該凴度臨界值時（Ydiff- Yth)，輸出該設定比例之二維移動 控制訊號。同樣地，在本實施例中，該設定比例之二維移 動控制吼號為1，且設定三維移動控制訊號為0，如步驟3〇5 所示。 當該亮度差值小於該亮度臨界值時，依據該亮度差值 (Ydiff)與該焭度臨界值（Yth)，計算得一第一比例值及一第二 比例值。在本實施例中，該第一比例值為該亮度差值（Ydiff) 與該亮度臨界值（Yth)之比值為Ydiff/Yth，該第二比例值係為 1與該第一比例值之差值為1-Ydiff/Yth。輸出一第一比例值 之二維移動控制訊號及一第二比例值之三維移動控制訊 號’亦即，該二維移動控制訊號為Ydiff/Yth，該三維移動控 制訊號為1 - Ydiff/Yth ’如步驟306所示。 參考圖4，其顯示圖2中之移動偵測器211之方塊示意圖。 該移動偵測系統211包括：一除法器401、一第一比較器 402、一第一多工器403、一第二比較器404、一第二多工器 405及一第二減法器406。該除法器401用以依據該亮度差值 (Ydiff)與該亮度臨界值（Yth)，計算得一第一比例值。在本實 施例中，該第一比例值為該亮度差值（¥(1咐)與該亮度臨界值 (Yth)之比值為 Ydiff/Yth。 該第一比較器402用以比較該亮度差值（Ydiff)與該亮度臨 界值（Yth)，輸出一第一符號位元至該第一多工器403。該第 一多工器403之輸入為該第一比例值及一第一設定值。本實 施例中，該第一設定值為1。依據該第一符號位元，選擇該 102807.doc -9- 1286443 第一比例值或該第一設定值二者其中之一， π 昂—輸出 伹0 詳言之，當該亮度差值大於該亮度臨界值時，該第一符 號位元為〇，使得該第一多工器403輸出之該第一輸出值= 該第：設定值(等於1);當該亮度差值小於該亮度臨界值 時，《亥第符旒位元為1，使得該第一多工器4〇3輸出之哕 第一輸出值為該第一比例值（Ydiff/Yth) 〇 人 該第二比較器404用以比較該彩度差值（Cdiff)與該彩度臨 界值（cth)，輸出一第二符號位元至該第二多工器4〇5。該第 二多工器405之輸入為該第一輸出值及一第二設定值。本實 施例中，該第二設定值為1。依據該第二符號位元，選擇該 第一輸出值或該第二設定值二者之其中之一，為該二維移 動控制訊號212。 詳言之，當該彩度差值大於該彩度臨界值時，該第二符 號位元為0，使得該第二多工器405輸出之該二維移動控制 訊號為該第二設定值（等於1);當該彩度差值小於該彩度臨 界值時’該第二符號位元為1，使得該第二多工器405輸出 之該二維移動控制訊號為該第一輸出值。如上所述，該第 一輸出值可能為該第一比例值（等於1)或該第一設定值 (Ydiff/Yth)。 該第二減法器406用以計算一第三設定值與該二維移動 控制訊號之差值，為該三維移動控制訊號213。在本實施例 .中，該第三設定值為1。因此，當該彩度差值大於該彩度臨 界值時（Cdiff- Cth)或該亮度差值大於該亮度臨界值時（Ydiff 102807.doc -10- 1286443 -Yth)，該二維移動控制訊號212為1，且該三維移動控制訊 號213為〇。該彩度差值小於該彩度臨界值時（Cdiff $ Cth)且該 * 亮度差值小於該亮度臨界值時（Ydiff $ Yth)，該二維移動控制 … 訊號212為Ydiff/Yth，該三維移動控制訊號213為1-Ydiff/Yth。 由於人眼對於亮度相較於彩度敏感。因此，本發明之移 動债測器211在彩度變化之偵測上係採用二分法，而在亮度 變化之彳貞測上則採用比例式的控制。也就是說，若判斷彩 φ 度偵測結果沒有移動（Cdiff$Cth)且Ydiff$ Yth時，則根據該 第一比例值（Ydiff/Yth)來達到比例式的控制。 利用本發明之移動偵測方法及系統，可以分別計算得該 二維移動控制訊號及該三維移動控制訊號所佔之比例。依 據該二維移動控制訊號及該三維移動控制訊號所佔之比 例，計算得不同比例之二維解調訊號及三維解調訊號，而 非僅為在二維解調訊號或三維解調訊號二者其中之一切 換。因此，本發明之移動偵測系統及方法可以依據實際畫 • 面内容進行動態調整，消除跳動與抖動現象，以提升晝面 品質。 !·隹上述實施例僅為說明本發明之原理及其功效，而非限 制本叙明。因此，習於此技術之人士可在不違背本發明之 精神對上述實施例進行修改及變化。本發明之權利範圍應 如後述之申請專利範圍所列。 【圖式簡單說明】 圖1係I知之用於顯不畫面之移動偵測系統方塊示意圖。 圖2係本發明用於顯示晝面之移動偵測系統方塊示意圖。 102807.doc 1286443 圖3為本發明用於顯示晝面之移動偵測方法流程示意圖 圖4為本發明之移動偵測器之方塊示意圖。 【主要元件符號說明】 10 習知之移動偵測系統 101 視訊訊號 102 第一視框延遲器 103 第二視框延遲器 104 減法器 105 加法器 106 數位低通濾波器 107 第一取絕對值電路 108 第二取絕對值電路 109 亮度差值 110 彩度差值 111 第一比較器 112 第二比較器 113 決定邏輯電路 114 二維移動控制訊號 115 三維移動控制訊號 20 本發明之移動偵測系統 201 視訊訊號 202 第一視框延遲器 203 第二視框延遲器 204 減法器 102807.doc -12- 12864431286443 IX. Description of the Invention: [Technical Field] The present invention relates to a motion detection system and method, and more particularly to a motion detection system and method for displaying a picture. [Prior Art] Referring to Figure 1, there is shown a schematic diagram of a conventional motion detection system for displaying pictures. The conventional motion detection system 10 includes: a first frame delay 102, a second frame delay 103, a subtractor 104, an adder 105, and a digital low pass filter 1〇6. A first absolute value circuit 107, a second absolute value circuit 1 〇8, a first comparator 丨η, a second comparator 112, and a decision logic circuit iii3. The video signal of a television system (NTSC/PAL/SECAM) display usually includes a luminance signal (Y) and a chroma signal (C). The video signal 101 is delayed by the first view frame delay device 1 , 2, and after subtraction by the subtractor 104, the high frequency component is filtered by the digital low pass filter 1 〇 6 and then passed through the first absolute The value circuit 1 〇7 can calculate a luminance difference value of 1 〇 9 (Ydiff). In addition, the video signal 1 〇1 is delayed by the first frame delay device 1 〇 2 and the second frame delay device 1 〇 3, and the adder 1 〇 5 is added, and then § hai first The absolute value circuit 10 8 can be used to calculate a chroma difference value 110 (Cdiff). The first comparator 111 is configured to compare the brightness difference value with a brightness threshold (Yth). If the brightness difference is large, It is regarded as a facet movement, and the output of the first comparator 111 is 1; conversely, if the brightness difference is small, it is regarded that the picture is not moved, and the output of the first comparator ill is 0. The second comparator 112 uses 102807.doc 1286443 to compare the chroma difference and the - ginger level (cth). If the chroma difference is large, it is regarded as a kneading movement. The output of the ehai 苐 杈 112 112 is 1; otherwise, if the gamma is small, the picture is not moved, and the output of the second comparator 112 is 0. The multiplexer circuit 113 is configured to determine the two-dimensional motion control signal 114 and the three-dimensional motion control signal 115 according to the outputs of the first comparator 111 and the second comparison benefit 112. When the retelling @女υ»咕 moves, that is, the output of the first comparator 丨丨i or the second comparator 1 1 2! ^ - LL, ^ ^ is 1 when 'the one-dimensional mobile control signal 114 is set to 70 king output one-dimensional solution_signal, the three-dimensional mobile control signal 丨丨5 is set to not output the three-dimensional demodulation signal at all; ## When the output is not moving, that is, when the output of the second ratio detector 111 and the second comparator ii 2 is 〇, the two-dimensional movement control signal 114 is set to 〇, and the two-dimensional demodulation signal is not output at all, and the three-dimensional movement is performed. The control signal 115 is set to 丨, and the three-dimensional demodulation signal is completely output. The prior art is described in U.S. Patent Nos.: U.S. Patent Nos. 5,305,120, 4,934,667, 4,868,655, 4,775,m. The conventional motion detection system 10 can only switch between the two-dimensional demodulation signal and the three-dimensional demodulation signal. Because the method used is a dichotomy, jump and jitter phenomenon are easy to occur on the dynamic surface. Affect the quality of kneading. Therefore, it is necessary to provide an innovative and progressive motion detection system and method to solve the above problems. SUMMARY OF THE INVENTION The present invention provides a motion detection method for displaying a facet, comprising the steps of: (a) obtaining a chroma difference value and a brightness difference value; (b) comparing the chroma difference value with a color a threshold value, when the chroma difference is greater than the chroma threshold 102807.doc -6 - 1286443, outputting a set ratio of the two-dimensional motion control signal; (c) when the chroma difference is less than the chroma limit a value, comparing the brightness difference value with a brightness threshold value, when the shell difference value is greater than the brightness threshold value, outputting the set ratio of the two-dimensional motion control signal; (d) when the brightness difference value is less than the brightness threshold value And calculating a first ratio value and a second ratio value according to the brightness difference value and the brightness threshold value; and (e) outputting a first ratio value of the two-dimensional motion control signal and a second ratio value Three-dimensional motion control signal. The invention provides a motion detection system for displaying a picture, comprising: a 〆 divider, a first comparator, a first multiplexer, a second comparator, a second multiplexer and a subtraction method The divider is configured to calculate a first ratio value according to a luminance difference value and a luminance threshold value; the first comparator is configured to compare the luminance difference value and the luminance threshold value, and output a first symbol bit; The first multiplexer selects one of the first scale value or a first set value as a first output value according to the first symbol bit; the second comparator is configured to compare the chroma value And a chroma threshold, outputting a second sign bit; the second multiplexer selects one of the first/output value or a second set value according to the second sign bit for two-dimensional movement The control signal is used to calculate a difference between the third set value and the two-dimensional motion control signal as a three-dimensional motion control signal. With the motion detection method and system of the present invention, the ratio of the one-dimensional mobile control signal and the three-dimensional motion control signal can be separately calculated. According to the ratio of the two-dimensional motion control signal and the three-dimensional motion control signal, two-dimensional demodulation signals and three-dimensional demodulation signals are calculated in different proportions, instead of only two-dimensional demodulation signals or three-dimensional demodulation signals All of them 102807.doc 1286443 change. Therefore, the mobile detection system and method of the present invention can dynamically adjust according to the actual picture content, thereby eliminating the phenomenon of crescent, jitter and jitter to improve the picture quality. [Embodiment] Referring to Figure 2, there is shown a block diagram of a motion detection system for displaying a picture of the present invention. The mobile debt measurement system 20 for displaying pictures of the present invention comprises: a first-frame delayer 2〇2, a second view frame delayer 2〇3, a second subtractor 204, an adder 2〇5, The _ digital low-pass waver is fine, the first-to-absence circuit 2G7, the first: the absolute value circuit fan and the - moving cross-detector 211. The first view frame delay unit 2〇2, the second view frame delay unit 2〇3, the second subtractor 204, the adder 2〇5, the digital low-pass waver 206, the first ^ absolute The value circuit 2〇7 and the second absolute value circuit are used to calculate a luminance difference value 2〇9 (Ydiff) and a chroma difference value 21 C(Cdiff)′ are the same as the above-mentioned prior art. I will not repeat them here. Referring to Fig. 3, there is shown a flow of the method of moving (4) the display screen of the present invention. As shown in step 301, the luminance difference value (Ydw) and the chroma difference value (cdiff) are first obtained. The difference in luminance (Ydiff) and the difference in chroma (Cdiff) can be calculated using the components and methods described above, or can be calculated using other components or methods. Compare the chroma difference (Cdiff) with the chroma threshold (cth) as shown in step 3〇2. When the chroma difference is greater than the chroma threshold (cdiff2 cth)', a set ratio of the two-dimensional motion control signal is output. In this embodiment, the set ratio of the two-dimensional motion control signal is 〗, and the three-dimensional motion control signal is set to 〇, as shown in step 303. Referring to step 304, when the chroma difference is less than the chroma threshold, the luminance difference (Ydiff) and the luminance threshold (Yth) are further compared to I02807.doc 1286443. When the luminance difference is greater than the threshold value (Ydiff-Yth), the set ratio of the two-dimensional motion control signal is output. Similarly, in this embodiment, the two-dimensional movement control nickname of the set ratio is 1, and the three-dimensional movement control signal is set to 0, as shown in step 3〇5. When the brightness difference is less than the brightness threshold, a first ratio value and a second ratio value are calculated according to the brightness difference value (Ydiff) and the threshold value (Yth). In this embodiment, the first ratio value is a ratio of the luminance difference value (Ydiff) to the luminance threshold value (Yth), and the second ratio value is a difference between 1 and the first ratio value. The value is 1-Ydiff/Yth. And outputting a first-order two-dimensional motion control signal and a second-scale three-dimensional motion control signal, that is, the two-dimensional motion control signal is Ydiff/Yth, and the three-dimensional motion control signal is 1 - Ydiff/Yth As shown in step 306. Referring to FIG. 4, a block diagram of the motion detector 211 of FIG. 2 is shown. The motion detection system 211 includes a divider 401, a first comparator 402, a first multiplexer 403, a second comparator 404, a second multiplexer 405, and a second subtractor 406. The divider 401 is configured to calculate a first ratio value according to the brightness difference value (Ydiff) and the brightness threshold value (Yth). In this embodiment, the first ratio value is a ratio of the brightness difference value (¥(1咐) to the brightness threshold value (Yth) is Ydiff/Yth. The first comparator 402 is configured to compare the brightness difference value. (Ydiff) and the brightness threshold (Yth), output a first sign bit to the first multiplexer 403. The input of the first multiplexer 403 is the first ratio value and a first set value. In this embodiment, the first set value is 1. According to the first symbol bit, one of the first proportional value or the first set value of the 102807.doc -9- 1286443 is selected, π ang—output伹0 In detail, when the brightness difference is greater than the brightness threshold, the first sign bit is 〇 such that the first output value of the first multiplexer 403 is output: the first: set value (equal to 1); when the brightness difference value is less than the brightness threshold value, the "Hier symbol bit is 1, so that the first output value of the first multiplexer 4〇3 output is the first ratio value (Ydiff /Yth) The second comparator 404 is configured to compare the chroma difference value (Cdiff) with the chroma cutoff value (cth), and output a second sign bit to The second multiplexer 4 〇 5. The input of the second multiplexer 405 is the first output value and a second set value. In this embodiment, the second set value is 1. According to the second sign bit And selecting one of the first output value or the second set value as the two-dimensional motion control signal 212. In detail, when the chroma difference is greater than the chroma threshold, the first The second symbol bit is 0, such that the two-dimensional motion control signal output by the second multiplexer 405 is the second set value (equal to 1); when the chroma difference value is less than the chroma threshold value, the first The two-symbol bit is 1, such that the two-dimensional motion control signal output by the second multiplexer 405 is the first output value. As described above, the first output value may be the first ratio value (equal to 1). Or the first set value (Ydiff/Yth). The second subtractor 406 is configured to calculate a difference between a third set value and the two-dimensional motion control signal, which is the three-dimensional motion control signal 213. In this embodiment. The third set value is 1. Therefore, when the chroma difference is greater than the chroma threshold (Cdiff-Cth) or the bright When the difference is greater than the brightness threshold (Ydiff 102807.doc -10- 1286443 -Yth), the two-dimensional motion control signal 212 is 1, and the three-dimensional motion control signal 213 is 〇. The chroma difference is less than the chroma. When the threshold value is (Cdiff $ Cth) and the * luminance difference value is less than the luminance threshold value (Ydiff $ Yth), the two-dimensional motion control... signal 212 is Ydiff/Yth, and the three-dimensional motion control signal 213 is 1-Ydiff/ Yth. Since the human eye is sensitive to brightness compared to chroma. Therefore, the mobile debt detector 211 of the present invention uses a dichotomy method for detecting chroma changes, and a proportional method for detecting luminance changes. control. That is to say, if it is judged that the color φ degree detection result does not move (Cdiff$Cth) and Ydiff$Yth, the proportional control is achieved according to the first proportional value (Ydiff/Yth). With the motion detection method and system of the present invention, the ratio of the two-dimensional motion control signal and the three-dimensional motion control signal can be separately calculated. According to the ratio of the two-dimensional motion control signal and the three-dimensional motion control signal, different ratios of the two-dimensional demodulation signal and the three-dimensional demodulation signal are calculated, instead of only the two-dimensional demodulation signal or the three-dimensional demodulation signal One of them switches. Therefore, the motion detection system and method of the present invention can dynamically adjust according to the actual content of the surface to eliminate the phenomenon of jitter and jitter to improve the quality of the face. The above embodiments are merely illustrative of the principles and effects of the invention, and are not intended to be limiting. Therefore, those skilled in the art can make modifications and changes to the above embodiments without departing from the spirit of the invention. The scope of the invention should be as set forth in the appended claims. [Simple Description of the Drawings] Figure 1 is a block diagram of a motion detection system for displaying a picture. 2 is a block diagram of a motion detection system for displaying a facet according to the present invention. 102807.doc 1286443 FIG. 3 is a schematic diagram of a flow detection method for displaying a facet according to the present invention. FIG. 4 is a block diagram of a motion detector of the present invention. [Major component symbol description] 10 conventional motion detection system 101 video signal 102 first view frame delay 103 second view frame delayer 104 subtractor 105 adder 106 digital low pass filter 107 first absolute value circuit 108 Second absolute value circuit 109 brightness difference 110 chroma difference value 111 first comparator 112 second comparator 113 decision logic circuit 114 two-dimensional motion control signal 115 three-dimensional motion control signal 20 motion detection system 201 of the present invention Signal 202 first view frame delay 203 second view frame delay 204 subtractor 102807.doc -12- 1286443
205 加法器 206 數位低通濾波器 207 第一取絕對值電路 208 第二取絕對值電路 209 亮度差值 210 彩度差值 211 移動偵測器 212 二維移動控制訊號 213 三維移動控制訊號 401 除法器 402 第一比較器 403 第一多工器 404 第二比較器 405 第二多工器 406 減法器 102807.doc -13-205 adder 206 digital low pass filter 207 first absolute value circuit 208 second absolute value circuit 209 brightness difference 210 chroma difference 211 motion detector 212 two-dimensional motion control signal 213 three-dimensional motion control signal 401 division 402 first comparator 403 first multiplexer 404 second comparator 405 second multiplexer 406 subtractor 102807.doc -13-