經濟部中央標隼局負工消资合作社印製 f 4 17 3^-. Α7 _______Β7 五、發明説明（） 5 _ 1發明領域及背景 A. 發明領域 本發明係為一種應用於JPEG積體電路的介面模組與 方法，尤指一種可使JPEG積體電路免除外加記憶體的介 面模組與方法 B. 發明背景 JPEG (Joint Photographic Experts Group)影像係指依 據國際標準組織（International Standard Organization)所 制定的一套壓縮演譯法（compression algorithms )而產生的 壓縮影像。由於JPEG壓縮演譯法中並不允許影像正在編 瑪時修改其編碼的參數’因此任何JPEG的程式在處理輸 入的影像時都至少需要兩次的處理程序，一次用來讀取影 像的複雜度（complexity )，另一次才真正用來執行影像的 壓縮。 目前市面上早有依據JPEG標準所設計的積趙電路 (Integrated Circuits )，且廣泛應用於靜態的影像讀取裝 置’如掃指器，或在電腦主機中搭配軟艘使用，以快速進 行影像的壓縮及解壓縮。圖1顯示一習知之JPEG壓縮裝 置的功能方塊圖。如® 1所示，JPEG壓縮裝置12係為一 積體電路，可接收來自一記憶裝置15所輸出之數位影像資 料。記憶裝置1 5可為一隨機存取記憶體或缓衝器，其主要 目的在儲存一類比/數位轉換裝置11所輸出的影像資料。 |_______2 本紙張^^4财關家辟（c:叫A4^ ( 21()><297公董） ------ ----------^------,玎------^ - (請先閲讀背面之注意事項再填寫本頁) A7 B7 41 73^ 五、發明説明（） 由於JPEG的程式在處理輪入的影像時都至少需要兩 次的處理程序，且資料傳送及壓縮的速率不同，因此jpeg 壓縮裝置12中有一暫存記憶裝置13，並有一外加的記憶裝 置I4,以作為資料在進行壓縮處理時暫存之用。以_般JPEG 的壓縮演譯法為例’通常以8 X 8圖素的影像區塊為單位來 進行壓缩。因此，暫存記憶裝置Π的大小須可容納8χ8圖 素的影像區塊’以餘存要赛縮的影像資料。而記憶裝置I5 便依據影像輸入的條數順序一條一條地將影像資料傳送至 記憶裝置14中儲存，等讀滿了 8條的影像資料後，才依序 讀取8x8圈素的影像區塊至暫存記憶裝置Π中進行影像的 壓縮運算。此方式的缺點為，須要一外加的記憶體14來搭 配暫存記憶裝置1 3的運作’才能將影像以固定大小之區塊 的方式傳送給暫存記憶裝置13。 5 — 2發明目的及概述 基於上述之問題，本發明之主要目的在提出一種介面 模組與方法’以溝通_類比/數位轉換裝置與一 jpeg壓 缩裝置，並可利用一改良的影像讀取方法，使JPEG壓縮 裝置可不須要外加記憶裝置便可讀取固定大小的影像區 塊，並可節省成本。 基於上述之目的，本發明乃藉由一介面模組來接收類 比/數位轉換器所輸出的資料，並在須要壓縮時，將資料 本纸張尺度逍用中國國家樣準（CNS > A4規格（210X297公釐） ;^.tr-----—^ (請先閱讀背面之注意事項再填寫本貰) 經濟部中央棣準局負工消費合作社印製 經濟部中央橾準扃貝工消费合作社印製 A7 __ B7 ' _ -.- - - 五、發明説明（） ' 傳送給JPEG壓縮裝置。介面模組主要包含一讀取控制裝 置’一輪出控制裝置’及一記憶裝置。讀取控制裝置從頬 比/數位轉換器所輸出的影像資料讀取—預先設定之線條 數的影像資料’並儲存於記憶裝置中。記憶裝置中所能儲 存的景像之行數與jpEG壓縮裝置中的暫存記憶裝置相 同。若壓縮的單位為8 χ8圖素的影像區塊，則記憶裝置的 大小便可儲存8條影像線條的資料。當完成讀取預先設定 之線條數的影像資料時，讀取控制裝置便輸出一控制訊號 至輸出控制裝置’以依序從該記憶裝置中讀取一設定之景; 像區塊的資料，並傳送至JPEG壓縮裝置中的暫存記憶裝 置。由於該設定之影像區塊的大小，與JpEG壓縮裝置壓 缩時所須要的影像大小相符，因此可將該影像區塊直接傳 送給JPEG壓縮裝置進行壓縮處理，而不須要外加記憶體， 因此可節省成本β 5 — 3圖式之簡單說明 圖1為習知之JPEG壓縮裝置的功能方塊固β 圖2為本發明之介面模組的功能方塊圈β 囷3為本發明之方法流程圖。 5 — 4本發明之詳細說明 本發明之介面模組21的功能方塊圖如圖2所示主 要包含：一讀取控制裝置22 ’ 一輸出控制裝置23，及— έ己憶裝置2 4。介面模組2 1的功能在作為類比/數位轉換 4 本紙張尺度適用中國國家i^TcNS )八4規格（210X29*7公釐) ^ " f靖先聞靖背面之注意事頊再绩馬本!) -裝 訂 417394 A7 B7 五、發明説明（） 器26與JPEG壓縮裝置27的介面，並為一模組化的元件， 可與JPEG壓縮裝置27結合而一起裝設於靜態影像處理 裝置中，如掃描器，或甚至數位像機，以進行影像的壓縮 處理β介面模組21接收類比/數位轉換器26所輸出之影 像資料，並在影像資料須要進行壓縮時，將資料傳送給 JPEG壓縮裝置27 d若不須要壓縮時，則介面模組2丨便 直接將影像資料傳送給一輸出/入介面25，以將影像資料 傳送至個人電腦端，進行更進一步的影像處理。 另一方面，類比/數位轉換器26接收來自影像讀取裝 置28所輸出的影像資料。影像讀取裝置28可為一電荷耦 合感應器（charge coupled device)，一接觸式影像感應器 (contact image sensor)，或數位像機。 在介面棋組21中 > 讀取控制裝置22從類比/數位轉 換器26所輪出的影像資料讀取一預先設定之線條數的影 像資料，並儲存於記憶裝置24中。記憶裝置24中所能儲 存的影像之行數（lines )與JPEG壓縮裝置27中的暫存 記憶裝置271相同》以8x8圖素的影像壓縮單元為例，記 憶裝置24的大小便可儲存8條影像線條的資料。當完成 讀取8條的影像資料時，讀取控制裝置22便輸出一控制 訊號221至輸出控制裝置23，以依序從該記憶裝置24中 讀取8x8圖素為單位的影像區塊，並傳送至jpeg壓縮裝 置.27中的暫存記憶裝置27 1 »由於該影像區塊的大小， 5 本紙張尺度適用中國國家樣準（CNS ) A4规格（210X297公釐） ---------#-- 一 (請先閲讀背面之注意事項再鲈爲本頁) 訂 經濟部中央標準局員工消費合作社印¾ 417394 經濟部中央標準局貝工消费合作社印製 A7 B7 五、發明説明（） 與JPEG壓縮裝置27在進行壓缩時所須要的影後 7'•小相 符，因此可將該影像區塊直接傳送給JPEG壓输# s 衣I 27 進行壓縮處理，而不須要外加記憶體，因此可節省士 t 有成本。 本發明之介面模組21的影像讀取流程如圖3所示 301 :設定卜0 ’ J = 〇，N=影像壓縮單元的影像條fPrinted by the Central Bureau of Standards, Ministry of Economic Affairs, Consumers and Consumers Cooperatives f 4 17 3 ^-. Α7 _______ Β7 V. Description of the invention () 5 _ 1 Field of invention and background A. Field of the invention The present invention is a circuit for JPEG integrated circuits Interface module and method, especially an interface module and method that can save JPEG integrated circuit without adding memory B. Background of the Invention JPEG (Joint Photographic Experts Group) image refers to the standard according to the International Standard Organization Compression image produced by a set of compression algorithms. Because the JPEG compression method does not allow the encoding parameters to be modified while the image is being edited, any JPEG program requires at least two processing procedures when processing the input image, once to read the complexity of the image (Complexity), another time is really used to perform image compression. Currently, Integrated Circuits based on the JPEG standard have been designed on the market, and they are widely used in static image reading devices such as finger scanners, or used with computer ships in the host computer to quickly perform image processing. Compression and decompression. FIG. 1 shows a functional block diagram of a conventional JPEG compression device. As shown in ® 1, JPEG compression device 12 is an integrated circuit that can receive digital image data output from a memory device 15. The memory device 15 may be a random access memory or a buffer, and its main purpose is to store image data output by an analog / digital conversion device 11. | _______ 2 This paper ^^ 4Fei Guanjiapi (c: called A4 ^ (21 () > < 297 public director) ------ ---------- ^ ---- -, 玎 ------ ^-(Please read the precautions on the back before filling this page) A7 B7 41 73 ^ V. Description of the invention () Because the JPEG program needs at least to process the rounded image Two processing procedures, and the rate of data transmission and compression are different, so the jpeg compression device 12 has a temporary storage memory device 13 and an additional memory device I4 for temporary storage of data during compression processing. _Common JPEG compression method is used as an example. 'Usually 8 x 8 pixels are used as the unit of compression. Therefore, the size of the temporary storage device Π must be able to accommodate 8 x 8 pixels of image blocks.' The image data to be shrunk is stored, and the memory device I5 transmits the image data to the memory device 14 one by one according to the number of image inputs, and reads them in order after reading 8 image data. An 8x8 circle image block is compressed into the temporary storage device Π for image compression. The disadvantage of this method is that it requires an additional memory 14 With the operation of the temporary storage device 13, the image can be transmitted to the temporary storage device 13 in the form of a block of a fixed size. 5-2 Objectives and Summary of the Invention Based on the above problems, the main purpose of the present invention is to propose an interface Modules and methods' to communicate_analog / digital conversion device and a jpeg compression device, and can use an improved image reading method, so that JPEG compression devices can read fixed-size image blocks without the need for an additional memory device, Based on the above-mentioned purpose, the present invention uses an interface module to receive the data output by the analog / digital converter, and when compression is needed, the data is used in accordance with the national standard of the paper. CNS > A4 size (210X297 mm); ^ .tr ------- ^ (Please read the notes on the back before filling in this card.) Printed by the Central Ministry of Economic Affairs, Central Bureau of Work, Consumer Cooperatives, and the Ministry of Economic Affairs. Printed by the Zhuanyi Beigong Consumer Cooperative A7 __ B7 '_ -.---V. Description of the invention ()' Send to JPEG compression device. The interface module mainly includes a reading control device 'a round out control device 'And a memory device. The reading control device reads the image data output from the ratio / digital converter—the image data of a preset number of lines' and stores it in the memory device. The scenes that can be stored in the memory device The number of lines is the same as the temporary storage device in the jpEG compression device. If the unit of compression is an image block of 8 x 8 pixels, the size of the memory device can store data of 8 image lines. When the reading is completed and preset When the number of lines of image data, the read control device outputs a control signal to the output control device 'to sequentially read a set scene from the memory device; the data of the block is transmitted to the JPEG compression device Temporary storage device. Because the size of the set image block is consistent with the image size required by the JpEG compression device, the image block can be directly sent to the JPEG compression device for compression processing without additional memory, so it can save Cost β 5 — 3 Brief description of the diagram. Figure 1 is a functional block diagram of a conventional JPEG compression device. Figure 2 is a functional block circle of the interface module of the present invention. Β 囷 3 is a flowchart of the method of the present invention. 5-4 Detailed description of the present invention The functional block diagram of the interface module 21 of the present invention is shown in FIG. 2 and mainly includes: a reading control device 22 ′, an output control device 23, and — a hand-memory device 24. The function of the interface module 2 1 is analog / digital conversion. 4 This paper size is applicable to China's national standard i ^ TcNS) 8 specifications (210X29 * 7 mm) ^ " f (This!)-Binding 417394 A7 B7 V. Description of the invention () The interface between the device 26 and the JPEG compression device 27 is a modular component that can be combined with the JPEG compression device 27 and installed in a still image processing device , Such as a scanner, or even a digital camera, to perform image compression processing. The β interface module 21 receives the image data output by the analog / digital converter 26, and sends the data to JPEG compression when the image data needs to be compressed. If the device 27 d does not need to be compressed, the interface module 2 丨 directly transmits the image data to an output / input interface 25 to transmit the image data to the personal computer terminal for further image processing. On the other hand, the analog / digital converter 26 receives image data output from the image reading device 28. The image reading device 28 may be a charge coupled device, a contact image sensor, or a digital camera. In the interface chess set 21 > The reading control device 22 reads image data of a preset number of lines from the image data rotated by the analog / digital converter 26, and stores it in the memory device 24. The number of lines of images that can be stored in the memory device 24 is the same as the temporary memory device 271 in the JPEG compression device 27. Taking an image compression unit of 8x8 pixels as an example, the size of the memory device 24 can store 8 lines. Information about image lines. When the reading of 8 pieces of image data is completed, the reading control device 22 outputs a control signal 221 to the output control device 23 to sequentially read the image blocks of 8 × 8 pixels from the memory device 24, and Send to jpeg compression device. 27 temporary storage device 27 1 »Due to the size of the image block, 5 paper sizes are applicable to China National Standard (CNS) A4 (210X297 mm) ------- -#-I (Please read the notes on the back first, and then this is the page) Ordered by the Consumer Standards Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 417394 Printed by the Central Standards Bureau of the Ministry of Economic Affairs Printed by the Bayer Consumer Cooperatives A7 B7 5. Description of the invention ( ) It is in line with the 7 ′ • minimum required by the JPEG compression device 27 for compression. Therefore, the image block can be directly transmitted to the JPEG compression # s clothing I 27 for compression processing without additional memory. This saves costs. The image reading process of the interface module 21 of the present invention is shown in Fig. 3 301: Set 0 ′ J = 〇, N = image bar f of the image compression unit
、双 ’ 1VU 影像厪縮單元的影像寬度； 302:讀取類比/數位轉換器所輸出的影像資料，1 = 1 1 +1 ； 3 0 3 :依序儲存該影像資料於一記憶裝置中； 3 04 :判定I = N?如果是，執行步驟305，否則，勃〜 302 ； 305:判定是否要執行影像壓縮？如果是，執行步級· ^ J 〇6 . 否則，執行步驟3 0 7 ; 306 : J = M，自該記憶裝置傳送J*N影像資料至jpE(}壓 縮裝置，M = M + M ; 307:將該記憶裝置中的資料傳送至一電腦主機處理。 綜上所述，本發明利用新的記憶體配置與讀取方法， 可利用一介面模組來控制 JPEG壓縮裝置所須的輸入資 料，因此，可省去外加一個記憶裝置的所須的成本》而且， 本發明之介面模組中的記憶裝置因具有緩衝的效用，亦可 解決JPEG壓縮裝置的壓縮速率與資料傳送速率不一致的 問題。另外，本發明之介面模組更可與JPEG壓縮裝置搭 配於任何靜態影像處理裝置中使用，如掃描器，傳真機， 6 本纸張尺度適用中國國家標準（CNS ) A4礼格（2丨0X297公釐） -------^---^------訂------Μ Γ靖先閑靖背面之注ϋ?再¥考本耳j 1 4 1 7 ^ Q Λ Α7 Β7 五、發明説明（） 或數位像機等。 以上所述僅為本發明之較佳實施例而已，且已達廣 泛之實用功效，凡依本發明申請專利範圍所作之均等變 化與修飾’皆仍屬本發明專利涵蓋之範圍内° 裝 ^ 訂 ~~~~~~'線 (請先聞讀背面之注意事項再瑣寫本頁) 經濟部中央標準局員工消費合作杜印製 7 本紙張尺度適用中固國家揉準（CNS ) A4規格（210X297公釐)2. The image width of the double 1VU image shrinking unit; 302: read the image data output by the analog / digital converter, 1 = 1 1 +1; 3 0 3: sequentially store the image data in a memory device; 3 04: Determine I = N? If yes, go to step 305; otherwise, go to 302; 305: decide whether to perform image compression? If yes, execute step · ^ J 〇6. Otherwise, go to step 307; 306: J = M, send J * N image data from this memory device to jpE (} compression device, M = M + M; 307 : Transmitting the data in the memory device to a computer host for processing. In summary, the present invention utilizes a new memory configuration and reading method, and can use an interface module to control the input data required by the JPEG compression device. Therefore, the cost required for an additional memory device can be eliminated. Moreover, the memory device in the interface module of the present invention can also solve the problem of inconsistency between the compression rate and the data transmission rate of the JPEG compression device due to its buffering effect. In addition, the interface module of the present invention can be used with JPEG compression devices in any static image processing device, such as scanners, fax machines, 6 paper standards applicable to China National Standards (CNS) A4 Lige (2 丨 0X297 (Mm) ------- ^ --- ^ ------ Order ------ M Γ Jingxian Jingjing's note on the back? Then ¥ test this ear j 1 4 1 7 ^ Q Λ Α7 Β7 V. Description of the invention () or digital camera, etc. The above description is only the best practice of the present invention. This is just an example, and it has achieved a wide range of practical effects. Any equal changes and modifications made in accordance with the scope of the patent application of the present invention are still within the scope of the patent of the present invention. First read the notes on the back and write this page again.) The consumer cooperation of the Central Bureau of Standards of the Ministry of Economic Affairs has been printed by Du Duan 7 This paper size is applicable to China Solid State Standard (CNS) A4 (210X297 mm)