201230806 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種監控攝影機 4匕從/、貝科傳輸方法，尤 才曰一種無須壓縮影像以確保監控影像 本之全高晝質監控攝影機及其資料傳輸相關技術目對降低成 【先前技術】 各種ΪΓ台安與保全的理由’監控攝影機被廣泛地運用在 種“ ’以拍攝現場影像供即時監看與錄影存證 監控攝影機與監控中心的主機之間是採取網路架構，音即 監控㈣機拍_影像後’是先經過壓縮再轉換成封^， 以便透過網路通信協様如TCP/IP)傳送給主機。儘管前 述監控攝影機採取的網路傳輸架構非常普遍，但其普及程 度並不代表使用成本相對較低： 曰 以屢縮格式而言’既有監控攝影機大多使用H 264或 M J P E G，但格故·卜；I μ _ ， 式上部不統-’復以高階壓縮晶片組售價昂 貴，造成監控攝影機的成本居高不下。 一再者為了在網路傳輸架構下，讓主機能接收到流暢 的高清監控畫面，必須要求網路頻寬，在此狀況下，不使 用專線幾乎是不可能的（非專用線路會有封包碰撞、遺失、 重傳等問題，即使是專線，亦難絕對避免)。故由上述可知 ，既有監控攝影機與主機之間採取網路傳輸架構，且在要 求同π现控畫面的前提下，必須採用昂貴的高階壓縮晶片 及網路專線，因而使成本提高，故有待進一步檢討，並謀 求可行的解決方案。 201230806 【發明内容】 因此本發明主要目的在提供一種全高畫質監控攝影機 ，其可不經壓縮地將監控畫面傳送給主機， y 1虿政解決既 有監控攝影機成本昂貴的問題。 為達成前述目的採取的主要技術手段係令前述監控 影機包括有： 一影像擷取模組，包括一影像擷取晶片及一影像訊號 處理器； 夕 … 一 TMDS編碼器，係與前述影像擷取模組的影像處理 器連接，用以將影像擷取模組輸出的影像編碼； 一訊號傳送器，係與前述TMDS編碼器的輸出端連接 當影像擷取晶片擷取影像後是直接由TMDS編碼器進 行最小化傳輸差分訊號編碼，再經由訊號傳送器將tmds 訊號轉換為可經由雙絞線傳送的格式，以便透過雙絞線送 出；由於影像擷取模組擷取的影像完全沒有經過壓縮，即 直接以TMDS格式進行傳輸，因而可確保監控影像的高畫 質，由於無須使用昂貴影像壓縮引擎，故可有效降低成本 ’另透過訊號傳送器的訊號轉換可延長TMDS訊號的傳輸 距離。 本發明的又一目的在提供一種全高畫質監控攝影機的 資料傳輸方法，其令影像訊號不經壓縮地傳送，以提供全 高畫質’並可有效降低成本。 為達成前述目的採取的技術手段係令前述方法包括： 201230806 一訊號傳送手段，含有以下步驟： 擷取一監控影像訊號； 對前述監控影像訊號進行TMDS編碼，以產生一 TMDS訊號； 將前述TMDS訊號轉換為可經由雙絞線傳送的格式後 送出； 一訊號接收手段，含有以下步驟： 經由雙絞線接收未經壓縮的TMDS訊號； Φ 對前述TMDS訊號作等化處理； 將經過等化處理的TMDS訊號直接傳送至一支援全高 晝質介面的顯示終端播放； 利用前述技術可將影像訊號無壓縮地傳送，滿足監控 監控畫面的高清晰度要求’且因無須使用高階壓縮引擎晶 片進行壓縮及透過網路專線傳送，故可有效降低成本。 【實施方式】 關於本發明監控攝影機的一較佳實施例，請參閱圖1 所不，主要係由一影像擷取模組1 〇、一 TMDS編碼器20 及一訊號傳送器（CAT-5Transmitter)30所組成；其中： 该影像擷取模組10包括一影像擷取晶片（CMOS” 1及 〜像訊號處理器（Image Sjgnal Pro cess or)12 ;該影像掏 取曰日片11刖知可進一步設有一光學鏡頭（匕㊀叩）〗〗，供影 像擷取晶片11透過該光學鏡頭13擷取監控影像，而影像 "頁取曰a片11掏取影像汛號後係送至影像訊號處理器1 2作 影像處理後送至TMDS編碼器2〇進行編碼。 201230806 該TMDS編碼器20係用以對影像擷取模組彳〇輸出的 影像進行TMDS編碼，所謂TMDS是指”最小化傳輸差分 訊號"（Transition Minimized Diffe「entia丨 Signa|ing)為高清 晰度多媒體介面（HDMI，以下簡稱HDM丨介面）支援的訊號 傳送技術，HDMI介面又支援傳送未經壓縮的影像訊號 。又TMDS具備四個通道，包括三個資料通道，一個時序 (CLOCK)通道’每個資料通道最大傳輸速度{ [65(5响 ，因而經由TMDS編碼器20編碼後的影像訊號，可以充 为滿足全向畫質（Full- HD)的要求。 再者，由於咼清晰度多媒體介面（HDMI)的訊號鐵線有 長度限制，一般不超過1 〇公尺，甚至有測試顯示超過5 公尺以後即會出現訊號衰減的現象；而監控攝影機一般而 言需要較長的傳輸距離，以便將訊號正常地傳送到監控中 〜的主機，若纟覽線有長度限制，將對其運用造成影響。 為解決前述問題’本發明的監控攝影機係在Tmds編 碼器20的輸出端設有一訊號傳送器3〇，由該訊號傳送器 • 30將TMDS訊號轉換成可經由雙絞線（如CAT_5或CAT_ 6)傳送的資料格式，透過雙絞線傳送tmds訊號的距離可 超過15公尺，40公尺，甚至100公尺，視該訊號傳送器 30的構成技術而有所差異： 如圖2A所示’揭示該訊號傳送器3〇A主要係由一 RJ45插座31所構成’該RJ45插座31是直接以直流輕合 (DC coupling)方式與TMDS編碼器20輸出端連接，除直 流麵合方式外，該RJ45插座31與TMDS編碼器20間的 各通道上可分別串接一電容（如圖3A所示），而以交流耦合 201230806 (AC coup丨ing)方式連接。利用上述技術所構成的簡易型訊 號傳送器30Α，其成本最低，而傳送距離達15公尺。當 主機端採用主動式等化接收器時，其傳送距離則可達 公尺。 如前述圖2Β、圖3Β所示，係主機端所設的主動式等 化接收器40,其包括一 RJ45插座41及一丁MDs等化器 42’該RJ45插座41與TMDS等化器42亦可採用直流耗 合或交流耦合方式連接，視傳送端的格式而定；而tmds 等化器42輪出端可直接與主機上的HDM丨介面埠連接。 再者，若欲因應超長的傳輸距離時，該訊號傳送器 亦可採用高階編碼晶片（如Hdbase 丁 VSi〇〇sk)對丁 訊號進行編碼時，其傳送距離在高清晰度要求下 (1〇80p@60)可達100公尺；如圖4A所示，該訊號傳送器 3〇B主要係由一 RJ45插座31及一編碼晶片32所組成， 該編碼晶片32係、採㈣似QAM方式處理，將訊號調制為 不同的強度及相位差再進行傳送，可滿足未來需求。 至於主機端的接收器50則由一 RJ45插座51及一解 碼晶片52組成，輯碼晶片52具有—組輸入端及一組輸 出端’該組輸入端係與RJ45插座51連接，輸出端則與可 直接與主機上的HDM丨介面埠連接。 經上述說明可知，本發明的監控攝影機是將擷取影像 直接進行TMDS編碼，再透過訊號轉換以 —TMOS,^^4Kx2K (3340xJ0p^ 25HZ/30HZ或4096x2160P@24HZ)，其解析度為經過壓縮 後在網路架構下傳送的現有監控攝影機之45倍，且其傳 201230806 送資料可包括視訊 '音訊，滿足未來20年，甚至50年内 監控任務的需求。 又利用訊號傳送器將TMDS訊號轉換為可通過雙絞線 傳送的格式，其無須使用網路專線，且TMDS編碼器及各 種訊號傳送器的價格低廉，故可大幅降低整體應用成本。 【圖式簡單說明】201230806 VI. Description of the Invention: [Technical Field] The present invention relates to a surveillance camera 4/, a Becco transmission method, and particularly a full-height surveillance camera that does not need to compress an image to ensure monitoring of a video image and Data transmission related technology has been reduced to [previous technology] Reasons for various ΪΓ台安和保保' surveillance cameras are widely used in the kind of '" to take live video for real-time monitoring and video storage monitoring camera and monitoring center host The network architecture is adopted, and the sound is monitored. (4) The camera image is compressed and then converted into a package to be transmitted to the host through a network communication protocol such as TCP/IP. The network transmission architecture is very common, but its popularity does not mean that the cost of use is relatively low: 曰 In the case of repeated formats, most of the existing surveillance cameras use H 264 or MJPEG, but Ge·Bu·I μ _ , The upper part is not expensive - the high-end compression chipset is expensive, which causes the cost of surveillance cameras to remain high. Under the transmission architecture, the host can receive smooth HD monitoring images, and the network bandwidth must be required. In this case, it is almost impossible to not use the dedicated line (non-dedicated lines will have packet collision, loss, retransmission, etc.) Even if it is a dedicated line, it is difficult to avoid it absolutely. Therefore, as can be seen from the above, both the surveillance camera and the host computer adopt a network transmission architecture, and on the premise of requiring the same π current control screen, expensive high-order compression chips must be used. The network line, which increases the cost, is subject to further review and seeks a feasible solution. 201230806 SUMMARY OF THE INVENTION Accordingly, it is a primary object of the present invention to provide a full-height surveillance camera that can transmit a monitoring screen without compression. The host computer, y 1 虿 解决 解决 解决 解决 解决 解决 解决 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 Signal processor; eve... a TMDS encoder connected to the image processor of the image capturing module Connected to encode the image output by the image capture module; a signal transmitter is connected to the output of the TMDS encoder. When the image capture chip captures the image, the TMDS encoder directly minimizes the transmission difference. The signal is encoded, and the tmds signal is converted into a format that can be transmitted via the twisted pair via the signal transmitter for transmission through the twisted pair; since the image captured by the image capture module is not compressed at all, the TMDS format is directly used. Transmission, thus ensuring high image quality of the surveillance image, which can effectively reduce the cost by eliminating the need for an expensive image compression engine. The signal transmission by the signal transmitter can extend the transmission distance of the TMDS signal. Another object of the present invention is to provide A data transmission method for a full-height quality surveillance camera, which allows image signals to be transmitted without compression to provide full-height quality and can effectively reduce costs. The technical means for achieving the foregoing purposes are as follows: 201230806 A signal transmission means includes the following steps: capturing a monitoring image signal; performing TMDS encoding on the monitoring image signal to generate a TMDS signal; and using the TMDS signal Converted to a format transmittable via twisted pair; a signal receiving means includes the steps of: receiving an uncompressed TMDS signal via a twisted pair; Φ equating the TMDS signal; equalizing The TMDS signal is directly transmitted to a display terminal supporting a full-height interface; the above technology can be used to transmit the video signal uncompressed to meet the high-definition requirements of the monitoring and monitoring picture' and is compressed and transmitted without using a high-order compression engine chip. Network line transmission, so it can effectively reduce costs. [Embodiment] Regarding a preferred embodiment of the surveillance camera of the present invention, please refer to FIG. 1 , mainly by an image capture module 1 , a TMDS encoder 20 and a signal transmitter ( CAT-5 Transmitter ) The image capturing module 10 includes an image capturing chip (CMOS) 1 and an image signal processor (Image Sjgnal Pro cess or) 12; the image capturing film 11 is further known. An optical lens is provided for the image capturing chip 11 to capture the monitoring image through the optical lens 13 , and the image is taken from the image slice 11 and the image signal is sent to the image signal processing. The device 1 2 is image processed and sent to the TMDS encoder 2 for encoding. 201230806 The TMDS encoder 20 is used for TMDS encoding the image output by the image capturing module, and the so-called TMDS refers to "minimizing the transmission difference". "Transition Minimized Diffe "entia丨Signa|ing" is a signal transmission technology supported by a high-definition multimedia interface (HDMI, hereinafter referred to as HDM interface), and the HDMI interface supports transmission of uncompressed video signals. The TMDS has four channels, including three data channels, and one timing (CLOCK) channel 'the maximum transmission speed of each data channel { [65 (5 rings), so the image signal encoded by the TMDS encoder 20 can be filled. The requirement for Full-HD (Full-HD). Moreover, since the signal quality of the HDMI-based multimedia interface (HDMI) has a length limit, it generally does not exceed 1 〇 meter, and even after the test shows that it exceeds 5 meters, There is a phenomenon of signal attenuation; in general, surveillance cameras require a long transmission distance in order to transmit the signal to the host in the monitoring mode. If the length of the cable is limited, it will affect its operation. The aforementioned problem is that the monitoring camera of the present invention is provided with a signal transmitter 3 at the output of the Tmds encoder 20, and the signal transmitter 30 converts the TMDS signal into a twisted pair (such as CAT_5 or CAT_6). The data format, the distance of the tmds signal transmitted through the twisted pair can exceed 15 meters, 40 meters, or even 100 meters, depending on the composition of the signal transmitter 30: Figure 2A Show that the signal transmitter 3A is mainly composed of an RJ45 socket 31. The RJ45 socket 31 is directly connected to the output of the TMDS encoder 20 by DC coupling, except for the DC face-to-face mode. A capacitor (shown in FIG. 3A) can be connected in series between the RJ45 socket 31 and the TMDS encoder 20, and connected in an AC coupling 201230806 (AC coup丨ing) manner. The simple type of signal transmitter 30, which is constructed by the above technique, has the lowest cost and a transmission distance of 15 meters. When the host uses an active equalization receiver, the transmission distance is up to a meter. As shown in FIG. 2A and FIG. 3B above, the active equalization receiver 40 provided on the host end includes an RJ45 socket 41 and a DCs equalizer 42'. The RJ45 socket 41 and the TMDS equalizer 42 are also It can be connected by DC or AC coupling, depending on the format of the transmitting end; and the round output of the tmds equalizer 42 can be directly connected to the HDM interface on the host. Furthermore, in order to respond to a long transmission distance, the signal transmitter can also use a high-order coded chip (such as Hdbase DVV〇〇sk) to encode the Ding signal, and its transmission distance is under high definition requirements (1) 〇80p@60) up to 100 meters; as shown in FIG. 4A, the signal transmitter 3〇B is mainly composed of an RJ45 socket 31 and a coded chip 32, and the coded chip 32 is based on the Q4 mode. Processing, the signal is modulated into different intensity and phase difference and then transmitted to meet future needs. The receiver 50 of the host side is composed of an RJ45 socket 51 and a decoding chip 52. The code chip 52 has a set of input terminals and a set of output terminals. The input terminals are connected to the RJ45 socket 51, and the output terminals are Connect directly to the HDM interface on the host. According to the above description, the surveillance camera of the present invention directly performs TMDS encoding on the captured image, and then converts the signal to -TMOS, ^^4Kx2K (3340xJ0p^25HZ/30HZ or 4096x2160P@24HZ), and the resolution is after compression. The existing surveillance camera transmitted under the network architecture is 45 times, and its transmission 201230806 can include video 'information' to meet the needs of monitoring tasks in the next 20 years or even 50 years. The signal transmitter is also used to convert the TMDS signal into a format that can be transmitted over a twisted pair. It does not require a network dedicated line, and the TMDS encoder and various signal transmitters are inexpensive, which can greatly reduce the overall application cost. [Simple description of the map]
圖1係本發明的系統架構示意圖。 圖2A、2B係本發明第—較佳實施例的結構示意圖。 圖3A、3B係本發明第二較佳實施例的結構示意圖。 圖4 A 4 B係本發明第三較佳實施例的結構示意圖。 【主要元件符號說明】 1 〇影像掘取模組 1 2影像訊號處理器 2 0 T M D S編碼器 11影像擷取晶片 13光學鏡頭1 is a schematic diagram of the system architecture of the present invention. 2A and 2B are schematic views showing the structure of a first preferred embodiment of the present invention. 3A and 3B are schematic views showing the structure of a second preferred embodiment of the present invention. Figure 4 is a schematic view showing the structure of a third preferred embodiment of the present invention. [Main component symbol description] 1 〇 image capturing module 1 2 image signal processor 2 0 T M D S encoder 11 image capturing chip 13 optical lens
30,30Α，30Β訊號傳送器 31 RJ45插座 40,50接收器 42 TMDS等化器 32蝙碼晶片 41,51 RJ45 插座 52解碼晶片30, 30 Α, 30 Β signal transmitter 31 RJ45 socket 40, 50 receiver 42 TMDS equalizer 32 bat chip 41, 51 RJ45 socket 52 decoder chip