經濟部中央標準局5E工消#合作社印製 ΐ98ϊΒι. A6 丄_B_6_ 五、發明説明（） 1 本發明關於一種外接式電腦-電視信號轉換器之電路 構造，恃別偽有關於一種具交錯掃描之外接式霣腦一電視 信號轉換器之電路構造。 按，習知外接式電腦-電視信號轉換器，固然可以將 5 外接電腦的影像輸出信號，轉換成為一般電視機可以適用 之輸入信號；然而，該電腦提供給霣視信號中之垂直同步 信號，卻不合乎電視交錯掃描（Interlace) 原理，卽將 電腦傳送來之垂直同步信號，經過霣路處理後，不能夠真 正像電視之垂直同步信號。致使電腦信號經轉換成電視信 10 號時，因交錯位置不正確，而使在電腦監視器及電視螢幕 上看不清顯示的字幕，甚或遣漏掃描線。意即在轉換時， 圖框（Frame) 的掃描線，僅奇數線或偶數線被掃描，不 管怎樣，都會有半數掃描線遭到遣漏，而造成轉換失真的 現象，此乃目前傳統此類産品之最大缺陷。 15 有鑑於此，本發明人乃基於傳統轉換器之未臻理想， 為兼顧實用暨整體之設計，致力研究，終於開發出本發明 一種外接式電腦-電視信號轉換器之電路構造.而得以解 決上述之缺點者。 即，本發明之主要目的，偽在於提供一種外接式電腦 20 -電視信號轉換器之電路構造.藉由一能産生外界振盪之 交錯装置，提供一中斷訊號，使垂直同步信號産生交錯現 象，以達成非交錯掃描之電腦輸出垂直同步信號，能完全 楔擬成電視所霈之交錯掃描方式者。 本發明之次要目的，係在於提供一種外接式電腦-電 甲 4 (21(1X297公釐）肌 5. 20,000張（H) ...................................... ........裝...........................訂..................^ ，…線' (請先閲讀背面之注意事項再填寫本頁) Ϊ98ϊ61 A 6 Β 6 經濟部中央標準局員工消費合作杜印51 五、發明説明（） 1 視信號轉換器之電路構造，將上述之交錯裝置装置於一輕 薄、短小，易於攜帶之外殼中，只要透過電腦上之印表機 輸出埠即可達成其交錯效果，使成為最簡單、最低成本、 且最好使用之唯一選擇者。 5 茲配合圖示，將本發明之外接式電腦一電視信铖轉換 器之電路構造之一較佳實施例，詳細說明如下，以期使 貴審査委員能對本創作之其他優點，目的或持擞，能播得 進一步之充分瞭解。 第一圖為本發明外接式電腦-電視倍號轉換器之電路 10 構造，其中主體部份中之硬體方塊圖。 第二圖為圖一中之垂直同步信號處理裝置，使垂直同 步信號轉換成電視的交錯掃描模式時之變化波 形圖。 第三圖為本發明外接式電腦-電視信號轉換器之電路 15 構造，其中交錯裝置之詳細線路圖。 第四圖為本發明外接式電腦-電視信號轉換器之電路 構造之産品使用示意圃。 第五圖為本發明外接式電腦-霣視信號轉換器之電路 構造，其中控制程式以中斷要求達成交錯掃描 2 0 之流程圖。 誚參閲第一圖所示，為本發明外接式電腦一電視信號 轉換器之電路構造方塊圖·配合一般電腦（如膝上型電腦 、簿記型電腦、家用電腦、以及各型與I Β Μ相容之電腦 等）之影像輸出埠所輸出之紅綠藍三個色信號R，G , Β、 水 4* ..............................................裝...........................^...................::攀 (請先閲讀背面之注意事項再填寫本頁) 甲 4 (210X297公赞）肌 5. 20,000張（Η) A 6 B 6 i8bv&i 五、發明説明（> (請先閲讀背面之注意事項再填寫本頁) 1 平同步信號HSYNC、 垂直同步信號VSYHC及接地信號。如 圖一，本發明主要包括一主體10、一交錯（Interlace)裝 置20及一控制程式30,其中，該主髏10更包括有一垂直同 步信號處理裝置101、一同步信號合成電路102、一遮抹 5 ( Blacking)控制電路103、一紅緦藍三色信號编碼器104 、一影像信號及彩色信號分離電路105、一缓銜電路106 、一影像輸出缓衝電路107、一電源電路108、一第一連 接器109及一第二逋接器110 ;其中，該垂直同步信號處 經濟部中央標準局Η工消费合作社印製 理裝置1 〇 1係利用上述電腦的水平同步信號HSYNC ,及垂直 10 同步信號 VSYHC ,配合 TTL74LS123、74F74 及 PAL16R4 等電 路將該垂直同步信號VSYNC轉換成霉視的交錯掃描楔式， 即將一個圖框分成偶顧埸（EVEN FIELD)及奇圖場（ODD FIELD), 該兩値圖場之垂直同步信號VSYNC相差1/2屆 水平掃描時間，如圖二所示，如此達到完整交錯掃描的效 15 果，使上述電腦輸出之紅綠藍三個色信號R,G,B,經轉換 成電視信號時，不致因交錯位置不正確，而使在電腦監視 器及電視螢幕上看不清顯示的宇幕，甚或遣漏掃描線者。 該同步信號合成電路102 ,偽將該電腦水平倍號HSYNC , 及上述經處理後之垂直同步信號VSYNC合成起來，送至上 20 述编碼器104 ,以進行编碼。該遮抹控制電路103 ,在較 佳的實施例中，係以74 LSI 23及74 F74所構成；當上述控 制程式30尚未執行之前，此時由電腦輸出之水平同步倍號 HSYNC頻率為31.5 KHZ,該遮抹控制電路103输出為高準 位，使上述影像輸出缓衝電路107關掉（Turn off)而輪 _£_ 〒4(2inX297&^)80_5.20,000$(H) A 6 B 6 丄 五、發明説明（） 1 出為零；而當該控制程式30致能（Enable)後，該霣腦輪 出之水平同步信號HSYNC頻率變為15.75 KHZ ,此時該遮 抹控制電路103輸出為低準位，讓視訊正常輸出，若不加 此電路10 3 ,則在控制程式尚未啓動前，電視將接收到3 1 5 .5 KHZ之水平同步信號HSYNC，將使電視畫面跳動、信號 傾斜等不規則金面出現。該紅緣藍三色信號编碼器104 , 偽以上述同步信號合成電路102所合成之同步信號為基準 ，將紅、線、藍三色信號R,G,B合成NTSC或PAL条統之合 成影像信號。該影像信號及彩色信號分離電路105 ,偽提 10 供具有高品質之電視信號輸出（即Supper VHS信號輸出） 。該緩衝電路106偽將原先輪入之VGA信號R,G,B ,再與 經上述垂直同步信號處理裝置1 0 1處理垂直同步倍號VSYNC ，以及水平同步信號HSYNC結合而接到電腦監視器之輸出 連接器，如此該電腦監視器與電視可同時顯示相同之視訊 15 ，由於垂直同步信號VSYNC亦經過待殊電路處理，故在該 監視器潁示時，保證交錯位置不致偏差，甚或迪成畫面晃 動現象。該影像輸出缓衝電路107則係設於連接電視之視 頻輸出端.以達到遮抹目的。該電源電路108 .在本實施 例中，使用電源為DC5V ,其偽經外接之轉接器（Adapter 20 )輸入DC 9V、500 mA .再將該DC 9V經内部穏壓電路轉 換成DC5V提供給電路。該第一連接器1〇9 ,其偽用來接收 由電腦VGA卡送出來之R,G,B倍號、垂直及水平信號VSYNC 、HSYNC。該第二連接器110偽用來連接電腦監視器使用 _ 心 ’卩4(2丨|1乂297公楚）80.5.20,000張（1·!) ..............................................^...........................TT.................一 :…峰 (請先閲讀背面之注意事項再填寫本頁) 經濟郎中央標準局Μ工消t合作社印製 A6 B6 五、發明説明（） 1 其次，該交錯装置20 ,再請參閲第三圖示，主要為一 簡單之振盪電路，設置於電腦印表機之25支接脚連接器上 。該印表機埠之第10接腳用來接收上述交錯装置20輪出之 振盪頻率，該振盪頻率可從10KHZ〜20KHZ之任一頻率；其 5 第8、9接脚即透過控制程式30設定在高電壓，以提供1C 74LS04之電源；而其第18〜25接腳偽連接於該IC 74LS04 之接地端，電壓為零。 在此值得一提的是，該交錯裝置20主要偽在産生一連 串的中斷（Interrupt),配合控制程式30的處理，使本發明 10 完全能做到交錯的目的。克服外接式電腦電視信號轉換器 所遭遇的問題，且本發明之外殼（BOX)設計相當輕薄、短 小，易於攜帶；與筆記型電腦配合時，非常適合作商業介 紹、教育訓練等透過大型電視機使用。同時本發明之視頻 合成影像可經錄影機將電腦TV視訊錄製於錄影帶上作各 15 種商業、教育等應用（如公司産品介紹此外.本發明 如與家用型電腦PC 1或PC 2配合，亦可作各種娛樂功 能（.如玩電腦遊戯）。而有關達成上述使用之連接，請參 照第四圖所示之産品使用示意圖。 經濟部中央標爭局員工消f合作社印製 (請先閲讀背面之注竞事項再填两本页) 如上所述，本發明之外接式電腦一電視信號轉換器之 20 電路構造，為使 貴初審委員深入瞭解本發明之精義及優 點，在此配合圖五所示之流程，更進一步説明如下： 1.由於VGA畫面输出為非交錯掃描，在同一晝面下，掃 描線由第一條起連缅輸出到最後一條。其掃描頻率為31.5 KHZ,此一頻率及掃描方式，經本發明轉換後，成為NTSC ( 本紙張尺度適用中國國家標準（CNS)甲4規格（210x297公釐) A6 B6 iSBv6i 五、a·明説明（） 1 或PAL)之交錯式掃描輸出，即在同一畫面下，僅輸出奇數 (請先聞讀背面之注意事項再填辉本頁) 條（1,3,5.....)之掃描線，而在下一艏晝面時，再輸出偶 數條（2,4,6,....)之掃描線，其掃描頻率成為15.75KHZ。 2. 上述VGA之像素（PIXEL)輸出時，乃是依據該VGA控 5 制晶Η内之各皙存器之值，以決定螢幕上某一點所對應到 該VGA記億體之位址，而輸出該位址内所存放之位元組之 值。故原則上只要改變控制暫存器内有關位址對應之值， 即可改變螢幕上整個簠面之位置。 3. 當上述掃描頻率減半（從31.5KHZ降為15.75KHZ )時 10 , —個盡面之時間内只夠輸出半數之掃描線。故利用第2 •訂* 項中所述之原理，在第一畫面時，可調整控制暫存器之值 ，使VGA從第零條掃描線開始輸出，並每隔一條掃描線輸 出一次，如此則構成了由偶數條掃描線所組成之畫面。在 第二盡面時，再調整該控制暫存器之值，使該VGA從第一 15 條掃描線起，毎隔一條輸出一次，則可構成由奇數條掃描 線所構成之畫面。至第三畫面時，再依上述方法，豳回第 零條開始輸出。依此方式處理，便可將該VGA之非交錯掃 描，模擬成NTSC或PAL之交錯式掃描。 •線· 經濟部中央標準局員工消費合作杜印製 4. 再者，為能確實掌握上述畫面讕整之時機，以取得正 20 確之同步，本發明偽採用硬體中斷之觸發方式，選用以下 方式 ： (1) .VGA控制晶Η所發出之垂直中斷訊號（Vertical Inte rrupt)〇 (2) .外界自行振置龙生之觸發訊號。 _ S__ 本紙張尺度適用中國國家標準（CNS)甲4規格（210 X297公贽） 19876.Printed by the Central Standards Bureau of the Ministry of Economic Affairs 5E 工 消 # Cooperative Sole 98ϊΒι. A6 丄 _B_6_ V. Description of the invention () 1 The present invention relates to the circuit structure of an external computer-TV signal converter. Circuit structure of external connection type brain-to-television signal converter. Press to know the external computer-TV signal converter, of course, it can convert the image output signal of 5 external computers into an input signal suitable for general TV sets; however, this computer provides the vertical synchronization signal in the envisioned signal, However, it does not conform to the principle of TV interlace (Interlace). The vertical sync signal transmitted from the computer cannot be really like the vertical sync signal of the TV after being processed by the way. As a result, when the computer signal is converted into TV signal No. 10, the subtitles are not clearly displayed on the computer monitor and TV screen due to the incorrect interlace position, or even the scanning line is omitted. This means that during conversion, only the odd or even lines of the scanning lines of the frame are scanned. In any case, half of the scanning lines will be missed, which will cause the phenomenon of conversion distortion. The biggest defect of the product. 15 In view of this, the present inventor is based on the unsatisfactory ideal of the traditional converter. In order to take into account both practical and overall design, he is devoted to research and finally developed the circuit structure of an external computer-TV signal converter of the present invention. The shortcomings mentioned above. That is, the main purpose of the present invention is to provide a circuit structure of an external computer 20-TV signal converter. By an interleaving device capable of generating external oscillation, an interrupt signal is provided to cause the interleaving phenomenon of the vertical synchronization signal, A computer that achieves non-interlaced scanning outputs a vertical synchronization signal, which can be completely wedge-shaped into an interlaced scanning method that is imagined by televisions. The secondary purpose of the present invention is to provide an external computer-electric armor 4 (21 (1X297 mm) muscle 5. 20,000 sheets (H) ................. ................................. Pretend ........................ ....... book .................. ^,… line '(please read the notes on the back before filling in this page) Ϊ98ϊ61 A 6 Β 6 Economy Ministry of Central Standards Bureau employee consumer cooperation Du Yin 51 V. Description of invention () 1 The circuit structure of the signal converter, the above interleaving device is installed in a thin, thin, and easy-to-carry case, as long as it is printed through the computer The output port of the computer can achieve its interleaving effect, making it the simplest, lowest cost, and the best choice for the best use. 5 The circuit configuration of the external computer-TV signal converter of the invention is matched with the icon A preferred embodiment is described in detail below, with a view to enabling your reviewing committee to fully understand the other advantages, purposes, or persistence of this creation. The first picture is the external computer-to-TV multiplier converter of the present invention Circuit 10 structure, in which the hardware side of the main part Fig. 2 is the vertical sync signal processing device in Fig. 1 which changes the vertical sync signal into the interlace scan mode of the TV. Fig. 3 is the circuit 15 of the external computer-TV signal converter of the present invention Structure, including the detailed circuit diagram of the interleaved device. The fourth picture is a schematic diagram of the product structure of the circuit structure of the external computer-TV signal converter of the present invention. The fifth picture is the circuit of the external computer-to-eye signal converter of the present invention. Structure, in which the control program uses an interrupt request to achieve a flow chart of interleaved scanning 20. I refer to the first figure, which is a block diagram of the circuit structure of an external computer-TV signal converter of the present invention. With a general computer (such as a laptop) Type computer, bookkeeping computer, home computer, and various types of computers compatible with I Β Μ, etc.) the red, green and blue signals R, G, Β, water 4 * ... .................................... Pretend ...... .............. ^ ................... :: Pan (please read the notes on the back first Please fill out this page again) A 4 (210X297 praise) muscle 5. 20,000 sheets (Η) A 6 B 6 i8bv & i V. Description of the invention (> (Please read the precautions on the back before filling in this page) 1 Horizontal sync signal HSYNC, vertical sync signal VSYHC and ground signal. 1. The present invention mainly includes a main body 10, an interlace device 20 and a control program 30, wherein the main skeleton 10 further includes a vertical synchronization signal processing device 101, a synchronization signal synthesis circuit 102, and a mask 5 (Blacking) control circuit 103, a red and blue three-color signal encoder 104, an image signal and color signal separation circuit 105, a buffer circuit 106, an image output buffer circuit 107, a power circuit 108, a first A connector 109 and a second connector 110; wherein, the vertical synchronization signal is printed by the Central Standardization Bureau of the Ministry of Economic Affairs of the Hgong Consumer Cooperative Printing and Processing Device 101. The horizontal synchronization signal HSYNC of the above computer is used to synchronize with the vertical 10 Signal VSYHC, cooperate with TTL74LS123, 74F74 and PAL16R4 and other circuits to convert the vertical sync signal VSYNC into a mild-looking interlaced scanning wedge, that is, a frame is divided into EVEN FIELD and odd field (ODD FIELD), the vertical sync signal VSYNC of the two field values differs by 1/2 session of the horizontal scanning time, as shown in Figure 2, so that the effect of complete interleaved scanning is achieved, so that the three red, green and blue output by the above computer When the color signals R, G, B are converted into television signals, the interlaced position will not be correct, so that the screen will not be clearly displayed on the computer monitor and TV screen, or even the scanning line will be omitted. The synchronizing signal synthesizing circuit 102 pseudo synthesizes the computer horizontal multiplier HSYNC and the processed vertical synchronizing signal VSYNC, and sends them to the encoder 104 described above for encoding. The obscuration control circuit 103, in a preferred embodiment, is composed of 74 LSI 23 and 74 F74; before the above control program 30 has not been executed, the horizontal synchronization multiple number HSYNC output by the computer at this time is 31.5 KHZ , The output of the obscuration control circuit 103 is at a high level, so that the image output buffer circuit 107 is turned off (Turn off) and turns _ £ _ 〒4 (2inX297 & ^) 80_5.20,000 $ (H) A 6 B 6丄 五. Description of invention (1) 1 is zero; and when the control program 30 is enabled (Enable), the frequency of the horizontal synchronization signal HSYNC of the brain brain wheel becomes 15.75 KHZ, and the obscuration control circuit 103 outputs It is a low level for normal video output. If this circuit 10 3 is not added, the TV will receive a horizontal sync signal HSYNC of 3 1 5 KHZ before the control program is started, which will cause the TV screen to jump and tilt the signal Wait for the irregular golden face to appear. The red edge blue tri-color signal encoder 104 pseudo-synthesizes the red, line and blue tri-color signals R, G and B into NTSC or PAL synthesis based on the synchronizing signal synthesized by the synchronizing signal synthesizing circuit 102 as a reference Image signal. The video signal and color signal separation circuit 105 pseudo provides a high-quality TV signal output (ie, Supper VHS signal output). The buffer circuit 106 virtually combines the VGA signals R, G, and B that were originally input, and then processes the vertical synchronization multiple number VSYNC and the horizontal synchronization signal HSYNC through the vertical synchronization signal processing device 101 to receive a computer monitor. The output connector, so that the computer monitor and the TV can display the same video at the same time. 15 Because the vertical synchronization signal VSYNC is also processed by a special circuit, so when the monitor is displayed, ensure that the interlaced position does not deviate, or even make the picture. Shaking phenomenon. The image output buffer circuit 107 is provided at the video output terminal connected to the TV to achieve the purpose of obliteration. The power supply circuit 108. In this embodiment, the power supply is DC5V, which is input to DC 9V and 500 mA via an external adapter (Adapter 20). The DC 9V is converted into DC5V by an internal pressure circuit to provide Give the circuit. The first connector 109 is used to receive the R, G, B multiple numbers, vertical and horizontal signals VSYNC and HSYNC sent by the computer VGA card. The second connector 110 is used to connect a computer monitor to use _ 心 '卩 4 (2 丨 | 1297chu) 80.5.20,000 sheets (1 ·!) ............ ................................. ^ .................. ............ TT ................. One: ... peak (please read the notes on the back before filling this page) A6 B6 printed by the Cooperative Society of the Bureau of Standards V. Description of the invention () 1 Secondly, the interleaving device 20, please refer to the third illustration again, mainly a simple oscillation circuit, which is installed on the 25th of the computer printer Pin on the connector. The 10th pin of the printer port is used to receive the oscillation frequency of the interleaving device 20. The oscillation frequency can be any frequency from 10KHZ to 20KHZ; its 5th pins 8 and 9 are set through the control program 30 At high voltage, to provide the power of 1C 74LS04; and its 18th to 25th pins are pseudo-connected to the ground of the IC 74LS04, the voltage is zero. It is worth mentioning here that the interleaving device 20 mainly generates a series of interrupts (Interrupt), and cooperates with the processing of the control program 30, so that the present invention 10 can completely achieve the purpose of interleaving. Overcoming the problems encountered by external computer TV signal converters, and the design of the box (BOX) of the present invention is quite light, thin, short, and easy to carry; when used with a notebook computer, it is very suitable for commercial introduction, education, training, etc. through large TV sets use. At the same time, the video composite image of the present invention can record the computer TV video on the video tape through a video recorder for 15 kinds of commercial, educational and other applications (such as company product introduction. In addition, the present invention can be used with a home-use computer PC 1 or PC 2, It can also be used for a variety of entertainment functions (such as playing computer games). For the connection to achieve the above use, please refer to the product usage diagram shown in the fourth figure. Printed by the Employees ’Cooperative of the Central Standardization Bureau of the Ministry of Economic Affairs (please read first (Fill in two pages on the back of the competition.) As mentioned above, the circuit structure of the external computer-TV signal converter of the present invention is 20. In order to enable your first-instance committee members to deeply understand the essence and advantages of the present invention, here is a combination of Figure 5. The process shown is further explained as follows: 1. Because the VGA screen output is non-interlaced scanning, the scan line is output from the first to the last one in the same day. Its scanning frequency is 31.5 KHZ. The frequency and scanning method become NTSC after the conversion of the present invention (this paper scale is applicable to the Chinese National Standard (CNS) A4 specifications (210x297 mm) A6 B6 iSBv6i V. a. 1 or PAL) interlaced scanning output, that is, only the odd number (please read the precautions on the back and fill in this page) scan lines (1,3,5 ...) on the same screen , And output the even number of scanning lines (2,4,6, ...) at the next day, the scanning frequency becomes 15.75KHZ. 2. When the above VGA pixel (PIXEL) is output, it is According to the value of each memory in the VGA control crystal H, the address of the VGA memory corresponding to a certain point on the screen is determined, and the value of the byte stored in the address is output. So in principle, as long as you change the corresponding value of the relevant address in the control register, you can change the position of the entire screen on the screen. 3. When the above scanning frequency is halved (from 31.5KHZ to 15.75KHZ) 10, one Only half of the scan lines can be output in the full time. Therefore, using the principle described in Item 2 • Order *, the value of the control register can be adjusted on the first screen to make the VGA go from the zeroth scan line Start to output, and output every other scan line, so that it constitutes a picture composed of even scan lines. At the second end, adjust again Adjust the value of the control register so that the VGA starts from the first 15 scan lines and outputs once every other, so that it can form a screen composed of an odd number of scan lines. To the third screen, follow the above method , Binhui will start to output the zeroth article. Processing in this way can simulate the non-interlaced scanning of the VGA into the interlaced scanning of NTSC or PAL. • Line · Printed by the consumer cooperation of the Central Standards Bureau of the Ministry of Economic Affairs 4. In addition, in order to be able to grasp the timing of the above-mentioned image smoothing and obtain the correct synchronization, the present invention pseudo adopts the triggering method of hardware interrupt, and selects the following methods: (1). The vertical interrupt issued by VGA control crystal Η Signal (Vertical Inte rrupt) 〇 (2). The outside world vibrates the trigger signal of Longsheng. _ S__ This paper scale is applicable to China National Standard (CNS) A 4 specifications (210 X297 Gongzhi) 19876.
A B 經濟部中央標準局員工消費合作社印製 五、發明説明（） 1 上述訊號可依其不同性質接入不間之硬體中斷線，如IRQ2 、IRQ7等，當該中斷要求IRQ2、IRQ7産生時，如圖五所示 ，控制程式30首先會作奇數/偶數掃描交換，再作奇數/ 偶數圖場交換，然後跳回主程式，以達成電視糸统之交錯 5 掃描之目的。 由上述VGA控制晶Η所發出之垂直中斷訊號，在硬體 之作法，偽使用硬體中斷線要求IRQ2 ,本發明之控制程式 30可偵測出該VGA控制晶片之垂直中斷訊號輸出是否有與 電腦之IRQ2之接點相連，若有相連，即可逹到電視交錯式 10 掃描，但不幸的是大部份的霣腦都沒有這樣設計。故最安 全最實際的作法就是用上述外界自行振盪産生之觸發訊號 ,透過印表機界面之中斷要求IRQ 7 ,而達成電視条统之交 錯掃描之功能，乃最簡單、最低成本、且最好使用之唯一 選擇。 15 綜上所述，本發明確藉所掲露之構造，達到預期之使 用目的，且本案於申請前並未見於刊物或公開使用在先， 正確符合專利法所述新穎且實用之精神，並已達到産業上 實施之階段，爰依法提出發明專利之申請，懇請惠於審査 並祈早賜發明專利楢為播； 20 惟，以上所述者，僅為本創作之較佳實施例而已，大 凡熟悉此項技藉之人仕，利用本發明之精神所做成之各種 變化，仍應包含於本案專利之内。 (請先聞讀背面之注意事項再填寫本頁) .蛑. 本紙張尺度適用中國國家標準（CNS)甲4規格（210x297公釐）AB Printed by the Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (1) The above signals can be connected to uninterrupted hardware interrupt lines according to their different properties, such as IRQ2 and IRQ7. At this time, as shown in Fig. 5, the control program 30 will first perform the odd / even scan exchange, then the odd / even field exchange, and then jump back to the main program to achieve the purpose of interlace 5 scan of the TV system. The vertical interrupt signal sent by the above-mentioned VGA control crystal H, in the practice of hardware, pseudo use of hardware interrupt line requires IRQ2, the control program 30 of the present invention can detect whether the vertical interrupt signal output of the VGA control chip is It is connected to the IRQ2 connection point of the computer. If there is a connection, you can go to the TV interleaved 10 scan, but unfortunately most of the brains are not designed like this. Therefore, the safest and most practical method is to use the trigger signal generated by the above-mentioned external self-oscillation to request IRQ 7 through the interruption of the printer interface, and to achieve the interlaced scanning function of the TV system, which is the simplest, lowest cost, and best. The only choice to use. 15 In summary, the present invention has indeed achieved its intended use with the disclosed structure, and this case was not found in the publications or public use prior to the application, and it correctly conforms to the novel and practical spirit described in the Patent Law, and Has reached the stage of industrial implementation, I filed an application for an invention patent in accordance with the law, and pleaded for the review and prayed for the early grant of the invention patent. 20 However, the above mentioned are only the preferred embodiments of this creation, ordinary Those who are familiar with this technology and make use of the spirit of the present invention to make various changes should still be included in the patent of this case. (Please read the precautions on the back and then fill out this page). Insects. This paper scale is applicable to China National Standard (CNS) A 4 specifications (210x297 mm)