201027977 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種文件掃瞄控制器、文件掃瞄器、文件掃瞄 系統及文件掃瞄控制方法，特別是指一種可選擇性執行單面掃瞄 (Simplex scanning)或雙面掃瞄（Duplex scanning)之文件掃聪控制 器、文件掃瞄器、文件掃瞄系統及文件掃瞄控制方法。 【先前技術】 目前，常見的資料影像掃瞄器主要可分為兩種架構，其中一 _ 種是單面掃瞒（Simplex scanning)架構，另一種是雙面掃描（Duplex scanning)架構。如第ία圖所示，即為一種具有單面掃瞄架構的資 料影像掃瞄器1，其主要利用單一電耦合元件（Charge Coupled Device, CCD)或接觸影像感測元件（Contact Image Sensor，CIS)等 影像感測器2、單一類比前端（Analog Front End, AFE)單元4及具 有單一影像處理引擎10的掃瞄控制器6來進行單面資料的掃瞄。 在該影像掃瞄器1執行文件掃瞄的過程中，該CCD/CIS影像感測 器2感測該影像掃瞄器丨從文件上掃瞄到的類比影像資料，而該 φ 類比前端單元4用來將前述CCD/CIS影像感測器2產生的類比影 像訊號(Analog video signal)資料進一步轉換成數位訊號，並將該 數位訊號傳予該掃瞄控制器6處理。但因此種資料影像掃瞄器i 之掃瞄控制器6僅具有單一影像處理引擎1〇，所以在一些雙面資 料掃瞄的應用上，需要裝置到兩顆掃瞄控制器6才能執行雙面資 料掃晦的工作。此外’此種資料影像掃瞄器1之掃瞄控制器6大 多設有一資料壓縮單元12搭配該影像處理引擎1〇,用於將影像處 理引擎ίο處理過的影像資料作資料壓縮（c〇mpressi〇n)並將該壓縮 後的資料儲存於一影像暫存器8中，以及一 CCD/CIS時序產生器 14用於產生並控制前述CCD/CIS影像感測器2之工作時序。 3 201027977 ’、人如第2A ®所7^ ’為―種具有雙面掃猫架構的資料影像 掃聪器20’其主要利用兩個第一及第二ccD/as影像感測器拉 26、兩個第-及第二類比前端單元24，則於分別將前述第一及 第- CCD/CIS影像感測器22, ％感測到的類比影像訊號轉換成數 位資料輸出，以及具有單—影像處理引擎32的掃晦控制器29來 進订雙面資料的掃猫。正因該掃晦控制器29僅有單一影像處理引 擎32,故需加設一 2對1多工器將該第-及第二類比前端單元 24, 28之兩個數位資料輪出作多卫傳送予該單—影像處理引擎32 瘳處理。在其他案例中，該多工器3〇也可被設計在影像處理引擎32 内部中’以在適當時機對影像資料作多n而且，該第一及 第二CCD/CIS影像感測器22, 26的工作時序皆由一咖㈣時序 產生器38來產生及控制’才能依序執行雙面資料掃瞒（見第 圖）。其餘元件如該資料壓縮單元34及影像暫存器36之用途因皆 與第1A圖的資料影像掃瞄器2〇相似，故在此不再贅述。 惟，在掃瞄同一文件並使用同一解析度的基礎下，此種具有 ^面掃猫賴的資料影像掃晦器2〇纟進行雙面資料掃晦時，必須 φ 是上表面（T〇P Side)掃描及下表面（B〇tt〇m side)掃瞄兩者交錯執 行，因此所花費的掃瞄時間往往是第1A圖的具有單面掃瞄架構的 資料影像掃瞄器1進行單面（上或下表面）掃描之掃瞄時間的兩倍 或等同於該資料影像掃瞄器1依序進行兩次單面掃瞄。例如，在 第1B圖所示之具有單面掃瞄架構的資料影像掃瞄器i之雙面掃瞄 時序圖中，分成解析度600 dpi (Pixels perinch)的上表面掃描時間 T1，以及解析度600 dpi的下表面掃描時間為T2;而在第2B圖所 示之具有雙面掃瞄架構的資料影像掃瞄器20之雙面掃晦時序圖 中，產生一具有相同解析度600 dpi的上下雙表面掃描時間τ3， 其中T3=T1+T2。因此對於使用者來說’以此種習知資料影像掃晦 4 201027977 ，1120進行雙面掃晦，會花費很長的掃描時間，在操作上極為不方 便0 【發明内容】 為解決前述習知技術的問題，本發明之一主要目的在於提供 -種文件掃㈣制n、文件掃_、文件統及文件掃描控 制方法，可用於提升文件雙面資料的掃瞒速度，使操作更為方便， 其中利用本發明同時執行-文件雙面_所花f的掃義間大致 等同於執行同一文件單面掃瞄所花費的掃瞄期間。 e 本發明之另—目的在於提供一種文件掃瞄控制器、文件掃瞄 器、文件知猫系統及文件掃瞒控制方法，係使用一個整合雙影像 處理引擎之掃瞄控制器，故可提昇成本效率。 為達上述發明目的，本發明提供一種文件掃瞄控制器、文件 掃晦器及文件掃跑系統，其中該文件掃瞒系統設於文件掃瞒器中 並可用於同時掃瞄文件之第一區域及第二區域，且該文件掃瞄系 統主要包括：第一影像感測器、第一類比前端單元、第二影像感 測器、第二類比前端單元、一掃瞄控制器及—影像暫存器，其中 φ 該第一影像感測器用於以一第一影像感測時序掃瞄該文件之第一 區域以取得一第一類比影像訊號，以及第二影像感測器用於以一 第二影像感測時序掃瞄該文件之第二區域以取得一第二類比影像 訊號。該第一類比前端單元用於以一第一類比前端時序將該第一 類比影像訊號轉換成一第一數位影像訊號輸出，以及第二類比前 端單元用於以一第二類比前端時序將第二類比影像訊號轉換成一 第二數位影像訊號輸出。 前述掃瞄控制器整合了一第一影像處理單元、一第二影像處 理單元、一主影像感測時序產生器、一類比前端時序控制器、直 少一馬達控制器、一同步化控制機制、一第—資料壓縮單元，以 5 201027977 及 $貝料壓縮單TO ’其中該第—影像處理單元用於以— 理該第一類比前端單元之第-數位影像訊號輸: 並產生第-區域資料，以及第二影像處理單元用於以 忠 r:=:類比前端單一二數位影像訊號輸： 及提供第 古=!明之第—實施例中’該主影像感測時序產生器用於分 別直接^供第—影像感測時序料第—影像感測器 二影像感測時序予第二影像感測器。201027977 VI. Description of the Invention: [Technical Field] The present invention relates to a file scanning controller, a document scanner, a document scanning system and a document scanning control method, in particular to an optional single side Scanning scanning or Duplex scanning file scanning controller, document scanner, document scanning system and file scanning control method. [Prior Art] At present, common data image scanners can be mainly divided into two architectures, one of which is a simplex scanning architecture and the other is a duplex scanning architecture. As shown in the figure ία, it is a data image scanner 1 with a single-sided scanning structure, which mainly utilizes a single Coupled Device (CCD) or Contact Image Sensor (CIS). The image sensor 2, the single analog front end (AFE) unit 4, and the scan controller 6 having the single image processing engine 10 perform scanning of single-sided data. During the image scanning process performed by the image scanner 1, the CCD/CIS image sensor 2 senses the analog image data scanned by the image scanner from the file, and the φ analog front end unit 4 The analog video signal data generated by the CCD/CIS image sensor 2 is further converted into a digital signal, and the digital signal is transmitted to the scan controller 6. However, the scan controller 6 of the data image scanner i has only a single image processing engine, so in some double-sided data scanning applications, it is necessary to install the two scan controllers 6 to perform double-sided operation. Data broom work. In addition, the scan controller 6 of the data image scanner 1 is generally provided with a data compression unit 12 and the image processing engine 1 for compressing the image data processed by the image processing engine ίο (c〇mpressi 〇n) storing the compressed data in an image buffer 8 and a CCD/CIS timing generator 14 for generating and controlling the operation timing of the CCD/CIS image sensor 2. 3 201027977 ', people like 2A ® 7^' is a kind of data image scanner 20' with double-sided scanning cat architecture, which mainly uses two first and second ccD/as image sensors to pull 26, The two first- and second analog front-end units 24 respectively convert the analog image signals sensed by the first and second-CCD/CIS image sensors 22, % into digital data output, and have single-image The broom controller 29 of the processing engine 32 is used to order the sweeping cat of the double-sided material. Because the broom controller 29 has only a single image processing engine 32, a two-to-one multiplexer is needed to make the two-digit data of the first and second analog front-end units 24, 28 Transfer to the single-image processing engine 32 瘳 processing. In other cases, the multiplexer 3 can also be designed to be 'in the interior of the image processing engine 32' to multiply the image data at the appropriate time, and the first and second CCD/CIS image sensors 22, The working sequence of 26 is generated and controlled by a coffee (four) timing generator 38 to perform a double-sided data broom in sequence (see the figure). The other components, such as the data compression unit 34 and the image buffer 36, are similar to the data image scanner 2 of FIG. 1A, and therefore will not be described again. However, when scanning the same file and using the same resolution, the data image broom 2 with the surface scanning must be φ is the upper surface (T〇P) The side scan and the lower surface scan are interleaved. Therefore, the scan time spent is often one-sided with the single-sided scan structure of the data image scanner 1 for one-sided scanning. The scan time of the (upper or lower surface) scan is twice or equivalent to the data image scanner 1 to perform two single-sided scans in sequence. For example, in the double-sided scanning timing chart of the data image scanner i having the single-sided scanning structure shown in FIG. 1B, the upper surface scanning time T1 of resolution 600 dpi (Pixels perinch), and the resolution are divided. The lower surface scan time of 600 dpi is T2; and in the double-sided broom timing chart of the data image scanner 20 with the double-sided scanning structure shown in FIG. 2B, a top and bottom with the same resolution of 600 dpi is generated. The double surface scan time τ3, where T3 = T1 + T2. Therefore, it is extremely inconvenient for the user to perform a double-sided broom on the conventional image broom 4 201027977, 1120, which is extremely inconvenient in operation. [Invention] To solve the aforementioned conventional knowledge Technical problem, one of the main purposes of the present invention is to provide a file sweep (four) system n, file scan _, file system and file scanning control method, which can be used to improve the broom speed of double-sided data of the file, and the operation is more convenient. Wherein the simultaneous scanning performed by the present invention - the double sided of the document - is equivalent to the scanning period of the single-sided scanning of the same document. e Another object of the present invention is to provide a file scanning controller, a document scanner, a document-like cat system, and a file broom control method, which use a scanning controller integrated with a dual image processing engine, thereby increasing the cost. effectiveness. To achieve the above object, the present invention provides a document scanning controller, a file broom, and a file sweeping system, wherein the file broom system is disposed in a file broom and can be used to simultaneously scan a first area of a document. And the second area, and the file scanning system mainly comprises: a first image sensor, a first analog front end unit, a second image sensor, a second analog front end unit, a scan controller and a video temporary register Wherein the first image sensor is configured to scan the first region of the file at a first image sensing timing to obtain a first analog image signal, and the second image sensor is configured to use a second image sensor The timing scan scans the second area of the file to obtain a second analog image signal. The first analog front end unit is configured to convert the first analog image signal into a first digital image signal output by a first analog front end timing, and the second analog front end unit is configured to use a second analog front end timing to form a second analogy The image signal is converted into a second digital image signal output. The scan controller integrates a first image processing unit, a second image processing unit, a main image sensing timing generator, an analog front end timing controller, a direct motor controller, a synchronization control mechanism, a first-data compression unit, which compresses a single TO' with 5 201027977 and $before materials, wherein the first image processing unit is configured to input the first-digital image signal of the first analog front-end unit: and generate the first-region data And the second image processing unit is configured to input a single binary image signal with a loyal r:=: analog front end: and provide an ancient image of the first image in the embodiment - the main image sensing timing generator is used for direct ^ For the first image sensing timing material-image sensor two image sensing timing to the second image sensor.
m 實例中，該第一及第二類比前端單元内部 —影像感測時序產生ϋ及U像感測時序產生 器，用於分別提供第一影像感測時抑該第—影像感測器以及提 供第一影像感測時序予該第二影像感測器；此時該掃瞄控制器内 的主影像感測時序產生器只產生掃_的同步訊號給該第一及第 一類比前端單疋内部的第_及第二影像感測時序產生器，以間接 產生第—影像感測時序及第二影像感測時序。在其他應用案例 中，主影像感㈣序產生器會提供工作時脈給該第-及第二類比 前端單元内部的第一及第二影像感測時序產生器。 在本發明之各實施例中，該類比前端時序控制器，用於分別 控希j第類比刚端單元所需的—第一類比前端時序，以及控制第 二類比前端單元所需的一第二類比前端時序。 該同步化控制機制’係控制該等影像感測時序產生器直接或 間接產生的第-影像感測時序及第二影像感測時序同步，以及控 制該類比前端時序㈣W第―類比前端時序及第三類比前端時 序同步’以及控制第-影像處理單元與第二影像處理單元之第一 影像處理時序及第二影像處理時相步^藉由制步化控制機制 之各同步化時序控制及雙影像處理單元，本發明執行文件雙面掃 201027977 * 瞄所花費的掃瞄期間大致等同於單面掃瞄所花費的掃瞄期間。該 同步化控制機制可以是單一整合處理單元，也可以是分散在各個 單元内。 在本發明之第三實施例中，該同步化控制機制係控制該等影 像感測時序產生器的第一影像感測時序及第二影像感測時序兩者 之間存在一個固定偏移量，以及控制該類比前端時序控制器的第 一類比前端時序及第二類比前端時序兩者之間存在一個固定偏移 量，以及控制第一影像處理單元與第二影像處理單元之第一影像 Φ 處理時序及第二影像處理時序兩者之間存在一個固定偏移量，且 前述各固定偏移量皆一致，且利用本發明文件雙面掃瞄所花費的 掃瞄期間大致等同於單面掃瞄所花費的掃瞄期間。 此外，本發明提供一種文件掃瞄控制方法，適用於一文件掃 瞄器以掃瞄至少一具有第一區域及第二區域之文件，包括下列步 驟： 利用一同步化控制機制控制各項時序； 利用一第一影像感測器以一第一影像感測時序掃瞄該文件之 Φ 第一區域以取得一第一類比影像訊號，以及同時利用一第二影像 感測器以一第二影像感測時序掃瞄該文件之第二區域以取得一第 二類比影像訊號，其中該第一影像感測時序及第二影像感測時序 係同步化或是兩者之間存在一個固定的偏移量； 利用一第一類比前端單元以一第一類比前端時序將第一類比 影像訊號轉換成一第一數位影像訊號輸出，以及同時利用一第二 類比前端單元以一第二類比前端時序將第二類比影像訊號轉換成 一第二數位影像訊號輸出，其中該第一類比前端時序及第二類比 前端時序係同步或是兩者之間存在有一個固定的偏移量； 利用一第一影像處理單元以一第一影像處理時序處理該第一 7 201027977 數位影像訊號輸出並產生—第一區域資料，以及同時利用一第二 〜像處理單元以—第二影像處理時序處理該第二數位影像訊號輸 出並產生一第二區域資料，其中該第一影像處理時序及第二影像 處理時序係同步，或是兩者之間存在有一個固定的偏移量；以及 同時執行該文件之第一區域及第二區域的雙區域掃瞄所花費 的掃瞄期間是大致等同於執行該文件之第一區域及第二區域之中 單一區域掃瞄所花費的掃瞄期間。 【實施方式】 φ 以下將參照所附圖式詳細說明本發明之技術内容。 明參考第3A圖，係顯示一種依據本發明之第一較佳實施例之 文件掃瞄系統60，設於一文件掃瞄器中並可用於同時掃瞄每一頁 文件之上下雙表面（如同第一區域及第二區域）或單獨掃瞄單一表 面’且該文件掃瞄器具有一組或多組掃瞄機構88連結該文件掃瞄 系統60之一部份、一個或多個馬達90用於驅動對應的掃瞄機構 88以連接影像感測器’以及一個或多個馬達驅動器92用於以一對 應的馬達驅動時序驅動對應的馬達90。 φ 該文件掃瞄系統60之主要結構包括：第一影像感測器62、第 —類比前端單元64、第二影像感測器66、第二類比前端單元68、 —掃瞄控制器及影像暫存器86，其中該第一影像感測器62及 第二影像感測器66可為電叙合元件(Charge Coupled Device，CCD) 或接觸影像感測元件（Contact Image Sensor，CIS)兩者其中之一，且 該第一影像感測器62是以一第一影像感測時序(Timing)自該被掃 瞄文件之上表面上進行光學掃猫以對應取得一第一類比影像訊 號，以及該第二影像感測器66用於以一第二影像感測時序自該被 掃瞄文件之相對下表面上進行光學掃瞄以對應取得一第二類比影 像訊號。 8 201027977 該第〆類比前端(Analog Front End，AFE)單元64係連接該第 一影像感測器62，主要用於以一第一類比前端時序將該第—類比 影像訊號轉換成一第一數位影像訊號輸出，以及該第二類比前端 單元68係連接該第二影像感測器66’用於以一第二類比前端時序 將第二類比影像訊號轉換成一第二數位影像訊號輸出。In the m example, the first and second analog front-end unit internal-image sensing timing generation and U-image sensing timing generators are used to respectively provide the first image sensing and the first image sensor and provide The first image sensing timing is applied to the second image sensor; at this time, the main image sensing timing generator in the scan controller generates only the sync signal of the scan_to the first and first analog front end unit The first and second image sensing timing generators indirectly generate the first image sensing timing and the second image sensing timing. In other application cases, the main image sensing (four) sequence generator provides a working clock to the first and second image sensing timing generators within the first and second analog front end units. In various embodiments of the present invention, the analog front-end timing controller is configured to respectively control the first analog front end timing required by the first analog unit and the second analog front end unit. Analog front end timing. The synchronization control mechanism controls the first image sensing timing and the second image sensing timing synchronization directly or indirectly generated by the image sensing timing generators, and controls the analog front end timing (4) W-analog front end timing and The three types are synchronized with the front end timing and the first image processing timing and the second image processing timing of the first image processing unit and the second image processing unit are controlled by the synchronization timing control and the dual image by the step control mechanism. The processing unit, the present invention performs a double-sided scan of the file 201027977. * The scanning period required for the aiming is roughly equivalent to the scanning period taken by the single-sided scanning. The synchronization control mechanism can be a single integrated processing unit or can be dispersed in each unit. In a third embodiment of the present invention, the synchronization control mechanism controls a fixed offset between the first image sensing timing and the second image sensing timing of the image sensing timing generators. And controlling a first offset between the first analog front end timing and the second analog front end timing of the analog front end timing controller, and controlling the first image Φ processing of the first image processing unit and the second image processing unit There is a fixed offset between the timing and the second image processing timing, and the foregoing fixed offsets are all consistent, and the scanning period required for the double-sided scanning using the document of the present invention is substantially equivalent to the single-sided scanning. The scanning period spent. In addition, the present invention provides a file scanning control method for a file scanner to scan at least one file having a first area and a second area, including the following steps: controlling a sequence by using a synchronization control mechanism; Detecting a first region of the Φ image of the file by using a first image sensor at a first image sensing timing to obtain a first analog image signal, and simultaneously using a second image sensor with a second image sense Measuring a second area of the file to obtain a second analog image signal, wherein the first image sensing timing and the second image sensing timing are synchronized or there is a fixed offset between the two Converting the first analog image signal into a first digital image signal output by using a first analog front end unit with a first analog front end timing, and simultaneously using a second analog front end unit to form a second analog ratio with a second analog front end timing The image signal is converted into a second digital image signal output, wherein the first analog front end timing and the second analog front end timing system are synchronized or exist between the two Having a fixed offset; processing the first 7 201027977 digital image signal output by a first image processing unit with a first image processing sequence and generating a first region data, and simultaneously utilizing a second image processing The unit processes the second digital image signal output by the second image processing timing and generates a second area data, wherein the first image processing timing and the second image processing timing are synchronized, or there is a fixed relationship between the two The offset period; and the scan period of the dual area scan of the first area and the second area simultaneously executing the file is substantially equivalent to the single area scan of the first area and the second area where the file is executed The scanning period spent. [Embodiment] φ Hereinafter, the technical content of the present invention will be described in detail with reference to the accompanying drawings. Referring to FIG. 3A, there is shown a document scanning system 60 in accordance with a first preferred embodiment of the present invention, which is disposed in a document scanner and can be used to simultaneously scan the upper and lower surfaces of each page of documents (like The first area and the second area) or individually scan a single surface' and the document scanner has one or more sets of scanning mechanisms 88 coupled to a portion of the document scanning system 60, one or more motors 90 for A corresponding scanning mechanism 88 is driven to connect the image sensor 'and one or more motor drivers 92 for driving the corresponding motor 90 at a corresponding motor drive timing. φ The main structure of the file scanning system 60 includes: a first image sensor 62, a first analog front end unit 64, a second image sensor 66, a second analog front end unit 68, a scan controller and an image temporary The memory device 86, wherein the first image sensor 62 and the second image sensor 66 can be both a Charge Coupled Device (CCD) or a Contact Image Sensor (CIS). And the first image sensor 62 optically sweeps the cat from the upper surface of the scanned document to obtain a first analog image signal, and the first image sensing timing (Timing) The second image sensor 66 is configured to perform optical scanning from the opposite lower surface of the scanned document to obtain a second analog image signal at a second image sensing timing. The first image sensor 62 is connected to the first image sensor 62, and is mainly used for converting the first analog image signal into a first digital image by a first analog front end timing. The signal output, and the second analog front end unit 68 is coupled to the second image sensor 66' for converting the second analog image signal into a second digital image signal output by a second analog front end timing.
於本實施例中，該掃瞄控制器70可為一控制晶片並整合了一 第一影像處理單it 72、-第二影像處理單元74、—主影像感測時 序產生器76、一類比前端時序控制器77、至少一馬達控制器78、 一同步化控制機制80、一第一資料壓縮單元82，以及一第二資料 壓縮單元84’其中該同步化控制機制80可以是一整合的同步化控 制單元或者是分散在各個前述單元内。 該第一影像處理單元72連接該第 頰比前端單元64並以一 第-影像處理時序專屬處理該第-類比前端單元64之第—數位发 像訊號輸出以對應產H區域資料，以及第二影像處= 74係連接第二類比前端單元68並以―第二影像處科序 理該第二類Μ端單元68之第二數位影像訊號輸出崎應產生一 第二區域資料’其中第-影像處理單元72與第二影像處理單元Μ 是作為處理影像資料的雙處理引擎 且組成一多管線化 (multi-pipelined)架構來同時平行處理第一 夂弟二數位影像訊號輸 出並產生第-區域資料及第二區域資料；惟，不因此限定本發明 之第-影像處理單元72與第二影像處理單元％僅屬於多管線化 架構’只要是任何架構能達成影像資料的平行處理應皆屬本發明 精神之㈣。前述第-影像處理時序與第二影像處理時序可以是 相同時序訊號或不同時序訊號。 於本實施例之掃瞒控制器7〇中，該第一資料壓縮單元82之 第—㈣壓縮時序壓縮 201027977 ’第一影像處理單元72產生之第-區域資料以形成一第一區域覆縮 資料。該第二資料壓縮單元84之輸入端連接該第二影像處理單元 74並以一第二資料壓縮時序壓縮第二影像處理單元74產生之第 二區域資料以形成一第二區域壓縮資料。同時該第—及第二資料 壓縮單元82’ 84輪出之第一區域壓縮資料及第二區域壓縮資料岣 儲存於前述影像暫存器86中。惟，於其他實施例中，該掃瞄控制 器的設計可以不包含該第一及第二資料壓縮單元，即該第—影像 處理單元72，74直接輸出第一及第二區域資料至該前述影像暫存 φ 器86中。此外，在其他應用案例中，該前述影像暫存器86亦可 改設於掃瞄控制器70中。 該主影像感測時序產生器76分別連接該第一影像感測器幻 及第二影像感測器66，並提供第一影像感測時序予該第一影像感 測器62及提供第二影像感測時序予第二影像感測器66,其中該第 一影像感測時序與第二影像感測時序可以是相同時序訊號或不同 時序訊號。該類比前端時序控制器77分別連接第一類比前端單元 64及第二類比前端單元68並提供且控制第一類比前端單元64所 φ 需的第一類比前端時序，以及提供且控制第二類比前端單元68所 需的第二類比前端時序，其中該第一類比前端時序與第二類比前 端時序可以是相同時序訊號或不同時序訊號。至少一馬達控制器 78用於提供該對應的馬達驅動時序予該馬達驅動器92。需注意的 是’於本實施例中’所提到的各種時序可以是一種工作時脈頻率 或是一種固定週期訊號。 於本實施例中，該同步化控制機制80係連接該主影像感測時 序產生器76以控制該主影像感測時序產生器76輸出之第一影像 感測時序及第二影像感測時序兩者同步化(Synchronization)。該同 步化控制機制80亦可以連接該類比前端時序控制器77以控制該 201027977 •類比前端時序控制器77輸出的第-類比前端時序及第二類比前端 日夺序兩者同步。該同步化控制機制80亦連接第一影像處理單元72 與第二影像處理單元74以控制第-影像處理單元72與第二影像 處理單元74使用的第-影像處理時序及第二影像處理時序兩者同 步。該同步化控制機制80亦可連接該第一資料壓縮單元82及第 二資料壓縮單元84以同步化第-資料壓縮時序及第二資料壓縮時 序。該同步化控制機制80亦可連接該馬達控制器78以同步化該 馬達控制器78所控制的對應馬達驅動時序，進而同步化該至少一 φ 馬達90之驅動。 因此如第4圖所示之各_時序圖，藉由本發明提供的同步 化控制機制如同步化控制單元)之各同步化時序控制及該雙影 像處理單兀72，74之影像資料平行處理，可使本系統6〇之第一 雜感測器62與第二影像感測器66 —起完成文件雙面掃猫所花 費的一第一掃瞄期間Td大致等同於第—影像感測器02單獨掃瞄 上表面所化費的一第二掃瞄期間Tt或第二影像感測器66單獨掃瞄 下表面所花費的一第三掃瞄期間Tb，即亦Tdi?Tt4Tbe於其他案 φ 例中，當第一影像感測器62和第二影像感測器66在感測每一頁 文件之上下雙表面時，如果該兩者之間的位置是有錯開時Td會略 大於Tt或Tb。 此外，如第3B圖所示之本發明之一第二實施例，其相較於前 述第一實施例不同之處在於：第二實施例之文件掃瞄系統6〇之第 一及第二類比前端單元64，68内部可以分設一第一影像感測時序 產生器642提供第一影像感測時序予該第一影像感測器62 ,以及 一第二影像感測時序產生器682提供第二影像感測時序予該第二 影像感測器的’且此時該掃瞄控制器内的主影像感測時序產生 器76只分別產生同步訊號予前述各類比前端單元64, 68 ’使前述 201027977 各類比前端單元64，68内的第一影像感測時序產生器642依據同 步訊號產生第一影像感測時序予該第一影像感測器62 ’以及第二 影像感測時序產生器682依據同步訊號產生第二影像感測時序予 第二影像感測器66，藉此可間接經由前述各類比前端單元64，68 同步化第一及第二影像感測時序。在其他應用案例中，主影像感 測時序產生器76會提供工作時脈給該第一及第二類比前端單元内 部的第一及第二影像感測時序產生器。至於第二實施例中的其餘 單元因為與第一實施例相同，因此在此不再重述。In this embodiment, the scan controller 70 can be a control chip and integrates a first image processing unit IT 72, a second image processing unit 74, a main image sensing timing generator 76, and an analog front end. The timing controller 77, the at least one motor controller 78, a synchronization control mechanism 80, a first data compression unit 82, and a second data compression unit 84' wherein the synchronization control mechanism 80 can be an integrated synchronization The control unit is either dispersed within each of the aforementioned units. The first image processing unit 72 is connected to the first cheek ratio front end unit 64 and exclusively processes the digital-to-digital image signal output of the first analog-like front end unit 64 to correspond to the H-region data, and the second Image area = 74 is connected to the second analog front end unit 68 and the second digital image signal of the second type of end unit 68 is outputted by the second image processing unit. The second area data should be generated. The processing unit 72 and the second image processing unit Μ are dual processing engines for processing image data and form a multi-pipelined architecture to simultaneously process the first two-digit digital image signal output and generate the first-region data. And the second area data; however, the first image processing unit 72 and the second image processing unit % are not limited to the multi-pipelined architecture, as long as any architecture can achieve parallel processing of image data. Spirit (4). The first image processing timing and the second image processing timing may be the same timing signal or different timing signals. In the broom controller 7 of the embodiment, the first (fourth) compression timing of the first data compression unit 82 compresses the first region data generated by the first image processing unit 72 to form a first region of the data. . The input end of the second data compression unit 84 is connected to the second image processing unit 74 and compresses the second area data generated by the second image processing unit 74 by a second data compression timing to form a second area compressed data. At the same time, the first area compressed data and the second area compressed data 轮 which are rotated by the first and second data compressing units 82' 84 are stored in the image buffer 86. However, in other embodiments, the scan controller is designed not to include the first and second data compression units, that is, the first image processing unit 72, 74 directly outputs the first and second region data to the foregoing The image is temporarily stored in the φ device 86. Moreover, in other application cases, the aforementioned image register 86 can also be modified in the scan controller 70. The main image sensing timing generator 76 is connected to the first image sensor and the second image sensor 66, and provides a first image sensing timing to the first image sensor 62 and provides a second image. The sensing timing is applied to the second image sensor 66, wherein the first image sensing timing and the second image sensing timing may be the same timing signal or different timing signals. The analog front end timing controller 77 is connected to the first analog front end unit 64 and the second analog front end unit 68, respectively, and provides and controls the first analog front end timing required by the first analog front end unit 64, and provides and controls the second analog front end. The second analog front end timing required by unit 68, wherein the first analog front end timing and the second analog front end timing may be the same timing signal or different timing signals. At least one motor controller 78 is operative to provide the corresponding motor drive sequence to the motor driver 92. It should be noted that the various timings mentioned in the 'in this embodiment' may be a working clock frequency or a fixed period signal. In this embodiment, the synchronization control mechanism 80 is connected to the main image sensing timing generator 76 to control the first image sensing timing and the second image sensing timing output by the main image sensing timing generator 76. Synchronization. The synchronization control mechanism 80 can also be coupled to the analog front end timing controller 77 to control the synchronization of the first analog-like front end timing and the second analog front end day ordering output of the 201027977 analog analog front end timing controller 77. The synchronization control mechanism 80 is also connected to the first image processing unit 72 and the second image processing unit 74 to control the first image processing timing and the second image processing timing used by the first image processing unit 72 and the second image processing unit 74. Synchronized. The synchronization control mechanism 80 can also be coupled to the first data compression unit 82 and the second data compression unit 84 to synchronize the first data compression timing and the second data compression timing. The synchronization control mechanism 80 can also be coupled to the motor controller 78 to synchronize the corresponding motor drive timings controlled by the motor controller 78 to synchronize the drive of the at least one φ motor 90. Therefore, as shown in FIG. 4, the synchronization timing control mechanism provided by the present invention, such as the synchronization timing control of the synchronization control unit, and the image data of the dual image processing unit 72, 74 are processed in parallel. The first scanning sensor 62 of the system and the second image sensor 66 can be used to complete the first scanning period Td of the document double-sided scanning the mouse is substantially equivalent to the first image sensor 02 alone. Scanning a second scan period Tt of the upper surface or a third scan period Tb of the second image sensor 66 separately scanning the lower surface, that is, Tdi?Tt4Tbe in other cases φ When the first image sensor 62 and the second image sensor 66 sense the lower surface of each page file, the Td may be slightly larger than Tt or Tb if the position between the two is staggered. In addition, a second embodiment of the present invention as shown in FIG. 3B differs from the first embodiment in that: the first and second analogies of the document scanning system 6 of the second embodiment The first image sensing timing generator 642 can be provided with a first image sensing timing generator 642 to provide a first image sensing timing to the first image sensor 62, and a second image sensing timing generator 682 to provide a second The image sensing timing is applied to the second image sensor and the main image sensing timing generator 76 in the scanning controller generates the synchronization signal to the foregoing various types of front end units 64, 68' respectively. The first image sensing timing generator 642 of the various types of front end units 64, 68 generates a first image sensing timing according to the synchronization signal to the first image sensor 62' and the second image sensing timing generator 682. The second image sensing sequence is generated according to the synchronization signal to the second image sensor 66, whereby the first and second image sensing timings can be synchronized indirectly via the foregoing various types of front end units 64, 68. In other application cases, the primary image sensing timing generator 76 provides a working clock to the first and second image sensing timing generators within the first and second analog front end units. As for the remaining units in the second embodiment, since they are the same as those of the first embodiment, they will not be repeated here.
於本發明之第三實施例中，相較於前述第一實施例不同之處 在於：第三實施例之該同步化控制機制80係控制該等影像感測時 序產生器76(或642, 682)輸出之第一影像感測時序及第二影像感 測時序兩者之間頻率不同且存在一個固定偏移量，且該固定偏移 量約等同於至少一條掃除線；同時，該同步化控制機制8〇亦可控 掃瞄期間Td大致等同於第 制該類比前端時序控制器77輸出的第一類比前端時序及第二類比 前端時序兩者之間頻率不同且存在一個固定偏移量，且該固定偏 移量約等同於至少一條掃除線；同時，該同步化控制機制8〇亦控 制第一影像處理時序及第二影像處理時序兩者之間頻率不同且存 在一個固定偏移量；同時，該同步化控制機制8〇亦控制第一資料 壓縮時序及第二資料壓縮時相者之關料同且存在—個固定 偏移量’且腳定偏移量約等同於至少—條掃除線；同時，該同 步化控制機制8〇亦可控制各馬達軸時序之間的頻率不同裏存在 :個：疋偏移量，進而同步化該至少一馬達9〇之驅動。需涑意的 ^二述各狀偏移量可以皆—致。利用本發明之第三實處例， 可Γ達到如第4圖所示之各掃瞒時序圖，亦即第―影像感測 一一!广f像感測器661完成文件雙面掃猫所花費『第 影像感測器62單獨掃瞒上表面戶斤 12 201027977 • 花費的一第二掃瞄期間Tt或第二影像感測器66單獨掃瞄下表面所 花費的一第三掃齡期間Tb ’即亦Td与Tt与Tb。惟，於其他案例中， 當第一影像感測器62和第二影像感測器66在感測每一頁文件之 上下雙表面時，兩者之間的位置若是錯開時^會略大於Tt或Tb。 此外，如第5圖所示’為一種本發明之較佳實施例之文件掃 瞄控制方法之流程圖，其中為方便了解，請配合參考第3A及3B 圖之文件掃瞄系統之各元件’該方法適用於一文件掃瞄器以掃瞄 至少一頁具有第一區域及第二區域之文件，其包括下列步驟： φ 步驟S760，啟動文件掃瞄； 步驟S765，藉由一同步化控制機制控制各項時序控制，其進 一步細分成下列步驟； (1) 步驟S770，藉由該同步化控制機制控制單個或是數個驅動 控制器驅動對應馬達時所需的各馬達驅動時序； (2) 步驟S772,藉由該同步化控制機制控制第一影像感測時序 及第二影像感測時序； (3) 步驟S774,藉由該同步化控制機制控制第一類比前端時序 及第二類比前端時序； (4) 步驟S776,藉由該同步化控制機制控制第一影像處理時序 及第二影像處理時序；以及 (5) 步驟S778’藉由該同步化控制機制控制第一資料壓縮時序 及第二資料壓縮時序； 步驟S780 ’利用該單個或是數個驅動控制器以單個或是數個 對應的馬達驅動時序驅動對應的馬達，其中藉由該同步化控制機 制控制單個或是數個馬達驅動時序同步化或是單個或是數個馬達 驅動時序之間存在一個約等同於至少一條掃猫線的固定偏移量； 13 201027977 • 步驟S800,利用一第一影像感測器以第一影像感測時序掃瞄 該文件之第一區域以取得一第一類比影像訊號，以及同時進行步 驟S802，利用一第二影像感測器以第二影像感測時序掃瞄該文件 之第二區域以取得一第二類比影像訊號，其中該第一影像感測時 序與第二影像感測時序係同步化或是兩者之間可以存在一個約等 同於至少一條掃瞄線的固定偏移量； 步驟S806，利用一第一類比前端單元以第一類比前端時序將 第一類比影像訊號轉換成一第一數位影像訊號輸出，以及同時進 φ 行步驟S808，即利用一第二類比前端單元以第二類比前端時序將 第二類比影像訊號轉換成一第二數位影像訊號輸出，其中該第一 類比前端時序與第二類比前端時序係同步化或是兩者之間存在一 個約等同於至少一條掃瞄線的固定偏移量； 步驟S812，利用一第一影像處理單元以第一影像處理時序處 理該第一數位影像訊號輸出並產生一第一區域資料，以及同時進 行步驟S814，利用一第二影像處理單元以第二影像處理時序處理 該第二數位影像訊號輸出並產生一第二區域資料，其中該第一影 φ 像處理時序與第二影像處理時序同步化或是兩者之間存在一個約 等同於至少一條掃瞄線的固定偏移量； 步驟S818，利用一第一資料壓縮單元以第一資料壓縮時序壓 縮第一區域資料以形成一第一區域壓縮資料，以及同時進行步驟 S820，利用一第二資料壓縮單元以第二資料壓縮時序壓縮第二區 域資料以形成一第二區域壓縮資料，其中該第一資料壓縮時序與 第二資料壓縮時序同步或是兩者之間存在一個約等同於至少一條 掃瞄線的固定偏移量； 步驟S824，分別儲存該第一區域壓縮資料及第二區域壓縮資 料於一影像暫存器中；以及 201027977 * 步驟S826，（如第4圖所示）利用第一影像感測器與第二影像 感測器一起完成文件雙面掃瞄所花費的一第一掃瞎期間Td大致等 同於第一影像感測器單獨掃瞄上表面所花費的一第二掃猫期間Tt 或第二影像感測器單獨掃瞄下表面所花費的一第三掃猫期間Tb， 即亦Td¥Tt与Tb。在其他案例中，第一影像感測器62和第二影像 感測器64是分別感測每一頁文件之上下雙表面時’如果該兩者之 位置有錯開時Td仍可能略大於Tt或Tb。 由前述可知，本發明之文件掃瞄系統及其方法’可提升雙面 〇 資料掃瞄速度，而使操作更為方便，其中以本發明執行文件雙面 掃晦所花費的掃瞄期間大致等同於單面掃瞄所花費的掃瞄期間。 此外，因本系統係使用一個整合雙影像處理引擎之掃瞄控制器， 故可提昇成本效率。 综上所述，本發明符合發明專利要件，爰依法提出專利申請。 准以上所述者僅為本發明之較佳實施例，舉凡熟悉此項技藝之人 士 ’在爰依本發明精神架構下所做之等效修飾或變化’皆應包含 於以下之申請專利範圍内。 φ 【圖式簡單說明】 第1A圖係顯示一種具有單面掃瞄架構的習知資料影像掃晦 器之架構簡圖。 第1B圖係顯示以第1A圖之習知資料影像掃瞄器依序進行 次單面掃瞄之掃瞄時序圖。 。第2Α圖係顯示一種具有雙面掃瞄架構的習知資料影像择嘴 器之架構簡圖。 第2Β圖係顯示以第2Α圖之習知資料影像掃瞄器依序進 - 人雙面掃瞄之掃瞄時序圖。 第3Α圖係顯示一種依據本發明之第一較佳實施例之文件棒 15 201027977 瞄系統之架構簡圖。 第3B圖係顯示一種依據本發明之第二較佳實施例之文件掃 越系統之架構簡圖。 第4圖係顯示以第3A及3B圖之本發明之文件掃瞄系統進行 一次雙面掃瞄之掃瞄時序圖。 第5圖係顯示一種依據本發明之文件掃瞄控制方法之步驟流 程圖。 【主要元件符號說明】In the third embodiment of the present invention, the difference from the foregoing first embodiment is that the synchronization control mechanism 80 of the third embodiment controls the image sensing timing generators 76 (or 642, 682). The frequency between the first image sensing timing and the second image sensing timing of the output is different and there is a fixed offset, and the fixed offset is approximately equal to at least one sweeping line; meanwhile, the synchronization control The mechanism 8 〇 can also control the scanning period Td is substantially equal to the frequency difference between the first analog front end timing and the second analog front end timing output by the analog front end timing controller 77, and there is a fixed offset, and The fixed offset is approximately equal to the at least one scan line; at the same time, the synchronization control mechanism 8 also controls the frequency between the first image processing timing and the second image processing timing to be different and there is a fixed offset; The synchronization control mechanism 8 also controls the first data compression timing and the second data compression phase, and there is a fixed offset and the foot offset is approximately equal to at least— Sweep line; the same time, the synchronization control mechanism may control the frequency 8〇 between the motor shaft in the presence of different timing: a: Cloth offset, at least a further synchronizing the driving of the motor 9〇. Need to be comfortable ^ two kinds of offsets can be all. By using the third embodiment of the present invention, each of the broom timing charts as shown in FIG. 4 can be achieved, that is, the first image sensing one by one; the wide f image sensor 661 is required to complete the file scanning on both sides of the file. 『Image sensor 62 separate broom upper surface 12 12 201027977 • A second scan period Tt taken by the second scan period Tt or the second image sensor 66 separately scans the lower surface Tb ' That is also Td and Tt and Tb. However, in other cases, when the first image sensor 62 and the second image sensor 66 sense the lower surface of each page of the document, if the position between the two is staggered, the ^ will be slightly larger than Tt. Or Tb. In addition, as shown in FIG. 5, it is a flowchart of a file scanning control method according to a preferred embodiment of the present invention. For the sake of convenience, please refer to the components of the document scanning system of the drawings 3A and 3B. The method is applicable to a file scanner for scanning at least one page of files having a first area and a second area, comprising the steps of: φ step S760, initiating a file scan; step S765, by a synchronization control mechanism Controlling each timing control, which is further subdivided into the following steps; (1) Step S770, by the synchronization control mechanism, controlling each motor driving sequence required for driving a corresponding motor by a single or several driving controllers; (2) Step S772, the first image sensing timing and the second image sensing timing are controlled by the synchronization control mechanism; (3) Step S774, the first analog front end timing and the second analog front end timing are controlled by the synchronization control mechanism (4) Step S776, controlling the first image processing timing and the second image processing timing by the synchronization control mechanism; and (5) Step S778' controls the first by the synchronization control mechanism a material compression timing and a second data compression timing; step S780 'Using the single or several drive controllers to drive the corresponding motor with a single or a plurality of corresponding motor drive timings, wherein the single control is controlled by the synchronization control mechanism Is a plurality of motor drive timing synchronizations or a fixed offset equal to at least one sweep line between a single or several motor drive timings; 13 201027977 • Step S800, utilizing a first image sensor Scanning the first area of the file with the first image sensing timing to obtain a first analog image signal, and simultaneously performing step S802, scanning the file with the second image sensing timing by using a second image sensor The second area is configured to obtain a second analog image signal, wherein the first image sensing timing is synchronized with the second image sensing timing or a fixed offset corresponding to at least one scanning line may exist between the two In step S806, the first analog video signal is converted into a first digital video signal by using a first analog front end unit with a first analog front end timing. And performing a step S808 at the same time, that is, using a second analog front end unit to convert the second analog image signal into a second digital image signal output by using a second analog front end timing, wherein the first analog front end timing and the second analog ratio The front-end timing system is synchronized or there is a fixed offset corresponding to at least one scan line between the two; in step S812, the first digital image processing unit processes the first digital image signal with a first image processing sequence. Outputting and generating a first area data, and performing step S814 at the same time, using a second image processing unit to process the second digital image signal output at a second image processing timing and generating a second area data, wherein the first image φ The processing sequence is synchronized with the second image processing timing or there is a fixed offset corresponding to at least one scan line between the two; step S818, compressing with the first data compression unit by the first data compression timing The first area data is used to form a first area compressed data, and step S820 is simultaneously performed, using a second data pressure The unit compresses the second area data by using the second data compression timing to form a second area compressed data, wherein the first data compression timing is synchronized with the second data compression timing or there is an approximately equivalent to at least one scan between the two. a fixed offset of the line; step S824, storing the first area compressed data and the second area compressed data in an image buffer respectively; and 201027977 * step S826, (as shown in FIG. 4) using the first image A first broom period Td taken by the sensor together with the second image sensor to perform double-sided scanning of the document is substantially equivalent to a second sweeping period spent by the first image sensor separately scanning the upper surface Tt or the second image sensor separately scans the lower surface for a third sweeping period Tb, that is, Td¥Tt and Tb. In other cases, the first image sensor 62 and the second image sensor 64 respectively sense the upper and lower surfaces of each page file. 'If the positions of the two are staggered, the Td may still be slightly larger than Tt or Tb. It can be seen from the foregoing that the document scanning system and the method thereof of the present invention can improve the scanning speed of the double-sided 〇 data, and the operation is more convenient, wherein the scanning period for performing the double-sided scanning of the document by the present invention is substantially equivalent. During the scan of the single-sided scan. In addition, because the system uses a scan controller that integrates a dual image processing engine, it increases cost efficiency. In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above-mentioned preferred embodiments are merely preferred embodiments of the present invention, and those skilled in the art should be included in the following claims. . φ [Simple description of the diagram] Figure 1A shows a schematic diagram of a conventional data image broom with a single-sided scanning architecture. Fig. 1B is a scanning timing chart showing the sequential single-sided scanning in the order of the conventional data image scanner of Fig. 1A. . The second diagram shows a schematic diagram of a conventional data image selector with a double-sided scanning architecture. The second figure shows the scanning sequence of the double-sided scanning in the order of the conventional image scanner of the second drawing. Figure 3 is a block diagram showing the architecture of a file stick 15 201027977 aiming system in accordance with a first preferred embodiment of the present invention. Fig. 3B is a block diagram showing the structure of a file scanning system in accordance with a second preferred embodiment of the present invention. Fig. 4 is a scanning timing chart showing a double-sided scanning by the document scanning system of the present invention in Figs. 3A and 3B. Figure 5 is a flow chart showing the steps of a document scanning control method in accordance with the present invention. [Main component symbol description]
60 文件掃猫系統 62 第一影像感測器 64 第一類比前端單元 66 第二影像感測器 68 第二類比前端單元 70 掃瞄控制器 72 第一影像處理單元 74 第二影像處理單元 76 主影像感測時序產生器 77 類比前端時序控制器 78 馬達控制器 80 同步化控制機制 82 第一資料壓縮單元 84 第二資料壓縮單元 86 影像暫存器 88 掃瞄機構 90 馬達 92 馬達驅動器 642 第一影像感測時序產生器 682 第二影像感測時序產生器 Td 雙面掃瞄期間 Tt 上表面掃瞄期間 Td 下表面掃瞄期間 S760- -S826 步驟 1660 Document sweeping system 62 First image sensor 64 First analog front end unit 66 Second image sensor 68 Second analog front end unit 70 Scan controller 72 First image processing unit 74 Second image processing unit 76 Main Image sensing timing generator 77 analog front end timing controller 78 motor controller 80 synchronization control mechanism 82 first data compression unit 84 second data compression unit 86 image register 88 scanning mechanism 90 motor 92 motor driver 642 first Image sensing timing generator 682 Second image sensing timing generator Td Double-sided scanning period Tt Upper surface scanning period Td Lower surface scanning period S760--S826 Step 16