200934237 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種可加密夕 尤指-種利用一多頻解調器及：力，音傳接裝置’ 多個國家頻帶功能以增加資料傳轉換器，可支援 行進-步之授權管理設定之二'，並能對資料進 置。 加费多頻影音傳接裝 Ο 〇 【先前技術·】 由於資訊之普及使得各式之資訊需求日益增加， 而相關個人資訊隱私部分，因為f訊取得之容易，已 =不少問題，因此在網路之電子商務、行動裝置、 型主機中，其資料之保護係需要利用加 你》又疋作為戈·全防範底線。 按，傳統之影音信號傳接裝置’如第2圖所示， 該影音信號傳接裝置2係包括一解調器2丄、一頻道 :馬器22轉換器23及-匯流排介面24所構 j。首士係將一類比影音信號及一類比廣播信號經由 調益2 1解調為—數位影音信號及一數位廣播信 ^並經該頻道解碼器22進行解碼後，由該轉換器 立^據以轉換為符合該匯流排介面2 4規格之數位影 曰L號及數位廣播信號，並由該g流排介面2 4輸出 電腦25作播放或儲存。其中，該解調器21僅 具有可接收美國使用之先進電視系統委員會 200934237 (Advanced Television System Commission，ATSC)、歐 洲與台灣使用之地面數位視訊廣播（Digital Vide〇200934237 IX. Description of the invention: [Technical field of the invention] The present invention relates to an encryption-capable special-purpose multi-frequency demodulator and a multi-frequency band function to increase data. The transfer converter can support the travel-step authorization management setting 2, and can be used for data entry. Adding multi-frequency video and audio transmission equipment 〇 [Previous technology·] Due to the popularity of information, various information needs are increasing, and the privacy of relevant personal information, because of the easy acquisition of f, has been a lot of problems, so In the e-commerce, mobile devices, and type hosts of the Internet, the protection of the data needs to use the plus you as the bottom line. According to the conventional video and audio signal transmission device, as shown in FIG. 2, the video signal transmission device 2 includes a demodulator 2, a channel: a horse 22 converter 23, and a bus bar interface 24. j. The first game system demodulates a class of video signal and a class of broadcast signal into a digital video signal and a digital broadcast signal via the channel decoder 2, and decodes the signal through the channel decoder 22, It is converted into a digital image of the L-number and digital broadcast signals conforming to the size of the bus interface 2 4, and the computer 25 is outputted or stored by the g-streaming interface 24. The demodulator 21 only has terrestrial digital video broadcasting (Digital Vide〇) which can be used by the Advanced Television System Commission (ATSC) 200934237 (Advanced Television System Commission, ATSC) used in the United States, Europe and Taiwan.
Broadcasting Terrestrial, DVBT )或曰本使用之整合服Broadcasting Terrestrial, DVBT) or the integrated service used by the notebook
〇 務數位廣播（lntegrated Services Dighal Br〇adcasting， ISDB)之單一規格功能。由此可知，該影音信 接 裝置2之傳輸頻帶為單一功能，僅能傳輸單一頻 不僅傳輸距離較短，且在部分地區中頻帶尚未開放 下，僅能單獨相容於某傳輸頻帶，因此其傳輸量少， 實不符合現今業界對傳輸品質之要求。 請參閱『第3圖』所示 作w 〇 ' ··八钩力一種習知之影省 係包括一職解調器31及其相 對應之頻道解碼器（ChanneIDeeGde〇 3 2、一麵了 ^調器33及其相對應之頻道解碼A single specification function for Integrated Services Dighal Br〇adcasting (ISDB). It can be seen that the transmission frequency band of the AV interface device 2 has a single function, and only a single frequency can be transmitted, not only the transmission distance is short, but also the frequency band is not open under some regions, and can only be separately compatible with a certain transmission band, so The small amount of transmission does not meet the requirements of the current transmission quality. Please refer to the figure shown in Figure 3. w 〇' ········································································· And its corresponding channel decoding
解調器35及日似由 lbDB D及其相對應之頻道解碼器3 6、一多工器 37、一轉換器38及一 夕益 由該ATSC解碉器q 7 ^ J， 3 9所構成’藉 腦解調器3。 、該1)赠解調器3 3及該 格之類比影解調器接收各不同規 頻道解碼器3 23 、 κ播L號，並經各相對應之 信號及-數位廣播信號後為-數位影音 並據以輸出至該轉換 ^ / 3 7整合接收 3 9規格之數位影音信號及數位匯流排介面 流排介面39輪出至—電腦4〇作：：，再由該匯 播放或館存。相較 200934237 於上述，結構，其僅係將上述該影音信號傳接裝置2 所具有單一功能之解調器2 1 ’以分別為ATSC規格 之解調器、DVBT規格之解調器及ISDB規格之解調器 架構出’僅為增設裝置設備之架構。然而，此法雖可 接收=同規格之頻帶，但由於該影音信號傳接裝置3 必須=藉由各司其職之解調器3 1、3 3、3 5接收 各頻L號後，再由其各自對應之頻道解碼器3 3 ❹ 4、3=對其信號做解碼並輸出至該多工器，由 該多，器3 7予以連結整合各信號後再據以輸入至該 $換器3 8。因此該影音信號傳接裝置3必需得經由 夕個硬體το件彼此解碼整合後，才可將各規格信號之 原始資料轉換為數位影音信號及數位廣播 至電腦40,其間所應用之硬體元件數目繁多’且= 2自不同，因而導致該影音信號傳接裝置3之生產 成本將會相對增加許多。 Ο 過r此！L上述兩種習知技術，其在整體裝置之操作 ，，因此並無有效及安全之保護措施，極 存之重要資料或個人私密資料因此而外漏，— 量;“遭隨意讀取、非法抄襲利用及* 用1製f播，如此將造成使用者之困擾。故，一般習 用者係無法符合使用者於實際使料之所需。 200934237 【發明内容】 本發明之主要目的係在於，利用多頻解調器及加 密轉換器，可支援多個國家頻帶功能以增加資料傳輸 量，並能對資料進行進一步之授權管理設定。 本發明之次要目的係在於，該多頻解調器可接收 包括大陸使用之地面數位多媒體廣播（Digital Multi-media Broadcasting Terrestrial, DMBT )、美國使 用ATSC、歐洲與台灣使用之DVBT及手持式行動數 位視頻廣播（Digital Video Broadcasting-Handheld, DVB-Η)或曰本使用之ISDB等各國之多頻信號，使 得本裝置接收信號範圍可更為廣泛且更符合業界傳輸 品質之要求。 本發明之另一目的係在於，可經該加密轉換器對 資料進行授權管理，由使用者決定係否設定加密監控 功能，而將相關個人資訊隱私部分或重要機密作進一 步之保護，以對其他之使用者進行管理動作，進而達 到顧及資料使用之安全性。 本發明之再一目的係在於，其匯流排介面係包括 PCMCIA 或 CardBus 或 Express Card 或 Mini Card 或 HMC或USB匯流排介面。 為達以上之目的，本發明係一種可加密多頻影音 傳接裝置，係至少包含一多頻解調器、一加密轉換器 8 200934237 及一匯blL排’ I面所構成。首先係由該多頻解調器對一 類比信號進行解調並轉換輪出一第一數位信號至該加 密轉換器’由該加密轉換器先予以進行加密與否之設 定後，再將之轉換符合為該匯流排介面規格之第二數 位信號，並經由該匯流排介面輸出至一電腦，由該電 腦將接收相對應之第二數位信號進行編碼處理，並據 以產生一第三數位信號，使該電腦可以儲存或播放所 編瑪之第二數位影音信號。 ^ 【實施方式】 請參閱『第1圖』所示，係本發明之電路方塊示 意圖。如圖所示：本發明係一種可加密多頻影音傳接 裝置，該可加密多頻影音傳接裝置1至少包含有一多 頻解調器1 1、一加密轉換器1 2及一匯流排介面1 3所構成。在本發明中，該匯流排介面1 3係包括 PCMCIA 或 CardBus 或 Express Card 或 Mini Card 或 O HMC或USB匯流排介面，而該多頻解調器1 1可接 收大陸使用之地面數位多媒體廣播（Digital Multi-media Broadcasting Terrestrial, DMBT)或美國 使用之先進電視系統委員會（Advanced Television System Commission, ATSC )或歐洲與台灣使用之地面 數位視訊廣播（Digital Video Broadcasting Terrestrial, DVBT)及手持式行動數位視頻廣播（Digital Video Broadcasting-Handheld，DVB-H )或日本使用之整合服 200934237 務數位廣播（Integrated Services Digital Broadcasting, ISDB)多頻信號。 該多頻解調器1 1係用以接受一來自於天線 (Antenna)之類比電視影音信號，且將其解調為一類 比景^像彳s號及一類比聲音信號，而該多頻解調器並包 含一類比數位轉換器（Anal〇g t〇 Digita丨converter， ADC) 1 1 1，可據以輸出一相對應之第一數位影像 Ο 信號及一第一數位聲音信號，可包括一傳輸流 (Transport Stream，TS )影音信號、一 Mpeg 相關系列 壓縮影音信號或其他任何型式之數位影音信號至該加 密轉換器1 2。該多頻解調器丄丄係用以接受一來自 於天線之類比調頻廣播信號，且將其解調為一類比廣 播信號，並由該類比數位轉換器^ 1據以輸出一第 一數位廣播信號至該加密轉換器i 2，其中，該多頻 解調器11係將所接收之類比聲音信號解碼為至少一 〇 類'比右聲信號及一類比左聲信號，由該多頻解調器丄 1之類比數位轉換器i i i將所解碼之類比右聲信號 及類比左聲信號轉換為該數位聲音信號並輸出至該加 密轉換器1 2。 該加密轉換器12係包含-數位訊號處理器 (Digital Signal Processor，Dsp)工 2 工及一頻道解碼 。器（Channel Decoder)工2 2 ’用以接收該多頻解調 器11所輸出之第-數位廣推信號或相對應之第一數 200934237 位影像信號及該第一數位聲音信號，先予以進行加密 與否之設定後’再將之轉換符合該 匯流排介面1 3規 格之第二數位廣播信號或符合該匯流排介面1 3規格 之第二數位影像信號及一第二數位聲音信號以經由 该匯流排介面1 3輸出至一電腦丄4，此後，由該 ^ 1 4將接收相對應之第二數位影像信號及第二數位 聲音信號進行編碼，並據以產生一第三數位影音作 號，如Mpeg相關系列壓縮影音信號，使該電腦曰丄^ 可以儲存或播放所編碼之第三數位影音信號。另外， 該電腦1 4亦可接收該匯流排介面i 3所輸出之第二 數位廣播仏號並儲存或播放，其中，該電腦1 4係可 為一桌上型電腦（PC )、一筆記型電腦（NB )或一掌 上型電腦（PDA)’而該匯流排介面i 3之規格係可為 PCMCIA 或 CardBus 或 Express Card 或 Mini Car HMC或USB等匯流排介面規格。 3 D 當本發明於運用時，若信號來源非類比信號而為 數位信號，如一第四數位影音信號或一第三數位廣播 信號時’係不需經由該多頻解調器i i解碼而由該加 密轉換器12直接接收該第四數位影音信號或第三數 位廣播信號，並由該加密轉換器i2先予以進行:密 與否之設定後，再將之轉換為符合該匯流排介面1 3 之匯流排介面規格之第五數位影音信號或第四數位廣 播h號，以經由該匯流排介面i 3輸出至該電腦1 200934237 4，使該電腦1 4可儲存或播放所接收之第五數位影 音信號或第四數位廣播信號，其中，該第四數位影音 信號或第三數位廣播信號係可為該傳輸流影音信號、 該Mpeg相關系列壓縮影音信號或其他任何型式之數 位影音信號。 Ο Ο 該多頻解調器11係可接收一來自於類比影音輸 出裝置之類比影像信號及類比聲音信i，而該類比聲 音信號係至少包含相對於該類比影像信號之一類比右 聲信號及-類比左聲信號，由該多頻解調器i工對所 接收之類比右聲信號及類比左聲信號進行解碼，並據 以輸出—第—數位左右聲音信號至該加密轉換器i 2。另外，該多頻解調器！ 2亦對所接收之類 解碼’並據以輸出一第六數位影像信號至該 Μ轉換器1 2 ’由該加密轉換n } 2將所接收之第 ^數位左右聲音信號或帛六數㈣像彳t縣進行加密 與否之設定，再分_換為符合該匯流排介 2 匯流排介面規格之相對應第二數位左右 ^ :數位影像信號，以經由該匯流排介面13‘ = 電腦14,最後經由該電…處理過，可 =斤接收之第二數位左右聲音信號或第七數位影像信 多頻月可加密多頻影音傳接裝置1所採用之 〜1 1可接收包括大陸DMBT、美國atsc、 200934237 歐洲與台灣DVBT及DVB-Η或日本ISDB-Τ等各國之 多頻信號，具有可支援多個國家之頻帶功能，除了可 增加傳輸量’使得本裝置接收信號範圍可更為廣泛且 更符合業界傳輸品質之要求外，並可在解調轉換此信 號後，經由該加密轉換器1 2對資料進行授權管理， 除了可由使用者決定係否設定加密監控功能，而將相 關個人資訊隱私部分或重要機密作進一步之保護外， 亦可根據電視廣播系統之需求作加密之動作，以對其 〇 他之使用者進行管理動作，進而達到顧及資料使用之 安全性。 另本發明之加密轉換器1 2可由以下方式所完 成：該加密轉換器12可為單晶片、可由fpga所構 成、可由數位邏輯電路與數位循序電路所構成、可由 積體電路元件所構成、可由AND邏輯元件' 〇r邏 輯元件與NOT邏輯元件所構成、可由D型正反器與 〇言己憶體元件所構成、可由正反器與邏輯元件以及;己憶 體所構成、可由二極體元件所構成或可由電阻、電容 或電感元件所構成。 又該加密轉換器12與該多頻解調器11係可為 -積體電路。且該多頻解調器i “系可由電 與電感所組成。 綜上所述，本發明係一括·^ ^ 係#可加密多頻影音傳接裝 置，可有效改善習用之種種缺點 種缺^,利用多頻解調器及 200934237 加密轉換器，一方而·^ ±如夕， 資科傳輸量，另一方面資國:頻帶二力能以增加 定，除了可由使用者決定係否：；定=:::理: 將相關個人#㈣私部分或$要機密作進—步=保護 外，亦可依電視廣播系統之需求作加密之動作以、對 其他之使用者進行管理監控而達到顧及資料使用之安The demodulator 35 and the like are composed of lbDB D and its corresponding channel decoder 36, a multiplexer 37, a converter 38, and the ATSC decoder q 7 ^ J, 39 'By brain demodulator 3. The 1) demodulator 3 3 and the same type of demodulator receive the different channel decoders 3 23 , κ broadcast L number, and the corresponding signals and - digital broadcast signals are - digital The audio and video are output to the conversion ^ / 3 7 integrated receiving 3 9 digital video signal and digital bus interface interface 30 round to - computer 4 operation::, then by the conference play or library. Compared with 200934237, the structure is only a demodulator 2 1 ' having a single function of the above-mentioned video signal transmission device 2, respectively, a demodulator of the ATSC standard, a demodulator of the DVBT specification, and an ISDB specification. The demodulator architecture is just an architecture for adding device devices. However, although this method can receive the frequency band of the same specification, since the video signal transmission device 3 must = receive the frequency L numbers by the respective demodulator 3 1 , 3 3 , 3 5 , The channel decoders 3 3 ❹ 4, 3= are respectively decoded by their respective channels and output to the multiplexer, and the multi-processors 7 7 are connected to integrate the signals, and then input to the converter. 3 8. Therefore, the video signal transmission device 3 must be decoded and integrated with each other through the hardware, so that the original data of each specification signal can be converted into a digital audio signal and a digital broadcast to the computer 40, and the hardware components used therebetween. A large number of 'and = 2 are different, thus resulting in a relatively large increase in the production cost of the video signal transmission device 3. Ο Over this! L. The above two conventional technologies operate on the whole device, so there is no effective and safe protection measure. Therefore, important information or personal private information is leaked out, and the quantity is; The plagiarism and use of the plagiarism and the use of the 1 system f will cause confusion for the user. Therefore, the general practitioner cannot meet the needs of the user in actual use. 200934237 [Summary of the Invention] The main object of the present invention is to utilize The multi-frequency demodulator and the encryption converter can support multiple national frequency band functions to increase the data transmission amount, and can further perform authorization management setting on the data. The second object of the present invention is that the multi-frequency demodulator can Receiving Digital Multi-media Broadcasting Terrestrial (DMBT) for use in the mainland, ATSC for the United States, DVBT for Europe and Taiwan, and Digital Video Broadcasting-Handheld (DVB-Η) or 曰The multi-frequency signals of countries such as ISDB used in this country make the receiving signal range of the device wider and more in line with the transmission quality of the industry. Another object of the present invention is that the data can be authorized and managed by the encryption converter, and the user decides whether to set the encryption monitoring function, and further protects the relevant personal information privacy part or important secret to Management actions are taken for other users to achieve security in view of data usage. A further object of the present invention is that the bus interface includes PCMCIA or CardBus or Express Card or Mini Card or HMC or USB bus interface. For the purpose of the above, the present invention is an cryptographic multi-frequency video transmission device, which comprises at least a multi-frequency demodulator, an encryption converter 8 200934237 and a blL row I face. The multi-frequency demodulator demodulates a class of analog signals and converts a first digital signal to the encryption converter. The encryption converter first performs encryption or not, and then converts it into the convergence. The second digit signal of the interface specification is output to a computer via the bus interface, and the computer receives the corresponding second number The bit signal is encoded, and a third digit signal is generated to enable the computer to store or play the second digital video signal. ^ [Embodiment] Please refer to the "Fig. 1" The circuit block diagram of the invention. As shown in the figure, the present invention is an cryptographic multi-frequency video and audio transmission device, and the cryptographic multi-frequency video transmission device 1 includes at least one multi-frequency demodulator 1 1 and an encryption converter. 1 2 and a bus interface 13 are formed. In the present invention, the bus interface 13 includes PCMCIA or CardBus or Express Card or Mini Card or O HMC or USB bus interface, and the multi-frequency demodulator 1 1 can receive Digital Multi-media Broadcasting Terrestrial (DMBT) used in the mainland or the Advanced Television System Commission (ATSC) used in the United States or terrestrial digital video broadcasting (Digital Video) used in Europe and Taiwan Broadcasting Terrestrial, DVBT) and Digital Video Broadcasting-Handheld (DVB-H) or used in Japan Combined service 200 934 237 Services Digital Broadcasting (Integrated Services Digital Broadcasting, ISDB) multi-frequency signals. The multi-frequency demodulator 11 is configured to receive an analog television audio signal from an antenna and demodulate it into an analog image and an analog sound signal, and the multi-frequency solution The modulator includes an analog-to-digital converter (Anal〇gt〇Digita丨converter, ADC) 1 1 1, and can output a corresponding first digital image Ο signal and a first digital sound signal, which can include a transmission A Transport Stream (TS) video signal, a Mpeg related series compressed video signal or any other type of digital video signal is transmitted to the encryption converter 12. The multi-frequency demodulator is configured to receive an analog FM broadcast signal from an antenna and demodulate it into an analog broadcast signal, and output the first digital broadcast by the analog digital converter Signaling to the encryption converter i 2, wherein the multi-frequency demodulator 11 decodes the received analog sound signal into at least one '-type right-right signal and an analog-like left-sound signal, and the multi-frequency demodulation The analog-to-digital converter iii of the unit 转换1 converts the decoded analog sound signal and the analog left sound signal into the digital sound signal and outputs it to the encryption converter 12. The encryption converter 12 includes a Digital Signal Processor (Dsp) and a channel decoding. Channel Decoder 2 2 ' is configured to receive the first-digit wide-push signal output by the multi-frequency demodulator 11 or the corresponding first number 200934237 bit image signal and the first digital sound signal, and first perform After the setting of the encryption or not, the second digital broadcast signal conforming to the specification of the bus interface 13 or the second digital video signal conforming to the specification of the bus interface 13 and a second digital sound signal are converted into The bus interface 1 3 outputs to a computer 丄4, after which the corresponding second digital image signal and the second digital sound signal are encoded by the ^1 4, and a third digital audio and video number is generated accordingly. For example, the Mpeg related series compresses the video signal, so that the computer can store or play the encoded third digital video signal. In addition, the computer 14 can also receive and store or play a second digit broadcast nickname output by the bus interface i3, wherein the computer system can be a desktop computer (PC), a notebook type The computer (NB) or a palmtop computer (PDA)' and the bus interface i 3 can be a busbar interface specification such as PCMCIA or CardBus or Express Card or Mini Car HMC or USB. 3 D when the present invention is used, if the signal source is a non-analog signal and is a digital signal, such as a fourth digital video signal or a third digital broadcast signal, the system does not need to be decoded by the multi-frequency demodulator ii. The encryption converter 12 directly receives the fourth digital video signal or the third digital broadcast signal, and is first performed by the encryption converter i2: after setting the security, it is converted into the bus interface 13 The fifth digit video signal or the fourth digit broadcast h number of the bus interface specification is output to the computer 1 200934237 4 via the bus interface interface i 3, so that the computer 14 can store or play the received fifth digit video and audio. The signal or the fourth digit broadcast signal, wherein the fourth digit video signal or the third digit broadcast signal may be the transport stream video signal, the Mpeg related series compressed video signal or any other type of digital video signal. The multi-frequency demodulator 11 can receive an analog image signal and an analog sound signal i from an analog video output device, and the analog sound signal includes at least one analogy to the right sound signal with respect to the analog image signal and - analogy to the left acoustic signal, the multi-frequency demodulator is used to decode the received analog right-sound signal and the analog left-sound signal, and accordingly, the -first-order left and right sound signals are output to the encryption converter i 2 . In addition, the multi-frequency demodulator! 2 also decodes the received image and outputs a sixth digital image signal to the chirp converter 1 2 'by the encrypted conversion n } 2 to receive the received left and right sound signals or a six-four (four) image彳t County is set to encrypt or not, and then divided into _ corresponding to the corresponding second digit of the bus interface interface specification ^: digital image signal, through the bus interface 13' = computer 14, Finally, it can be processed by the electric ..., can receive the second digit sound signal or the seventh digit image signal multi-frequency monthly encrypted multi-frequency video transmission device 1 used to receive the DMBT, including the mainland DMBT, the United States Atsc, 200934237 European and Taiwan DVBT and DVB-Η or Japan ISDB-Τ multi-frequency signals, with the ability to support the frequency band of multiple countries, in addition to increasing the amount of transmission 'so that the device can receive a wider range of signals and More in line with the requirements of the industry's transmission quality, and after demodulating and converting this signal, the data can be authorized and managed via the encryption converter 12, except that the user can decide whether to set the encryption monitoring function. Off personal information or privacy section for further important secrets of protection, it can also be made according to the needs of the television broadcast encryption system of actions to manage the operation of its billion users of him, and then to take into account the safety of the use of information. The encryption converter 12 of the present invention can be implemented in the following manner: the encryption converter 12 can be a single chip, can be composed of fpga, can be composed of a digital logic circuit and a digital sequential circuit, can be composed of integrated circuit components, can be AND logic element ' 〇r logic element and NOT logic element, can be composed of D-type flip-flop and rumor memory element, can be composed of flip-flop and logic element, and memory, can be diode The components may be constructed of resistors, capacitors or inductive components. Further, the encryption converter 12 and the multi-frequency demodulator 11 may be an integrated circuit. Moreover, the multi-frequency demodulator i can be composed of electricity and inductance. In summary, the present invention is a multi-frequency video transmission device that can be used to effectively improve various disadvantages of the conventional use. , using multi-frequency demodulator and 200934237 encryption converter, one side ^ ^ ± 夕 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , =::: Reason: The relevant individual #(4) private part or $ confidentiality should be entered as step-by-step protection. It can also be encrypted according to the needs of the TV broadcasting system to manage and monitor other users. Data security
=用=而使本發明之產生能更進步、更實用、更符 σ使用者之所須，確已符合發明專利申請之要 依法提出專利申請。 惟以上所述者，僅為本發明之較佳實施例而已， 當▲不能以此限^本發明實施之範圍；&，凡依本發明 申請專利範圍及發明說明書内容所作之簡單的等效變 化與修飾，皆應仍屬本發明專利涵蓋之範圍内。 〇 14 200934237 【圖式簡單說明】 第1圖’係本發明之電路方塊示意圖。 第2圖，係第一習知技術之電路方塊示意圖。 第3圖，係第二習知技術之電路方塊示意圖。 【主要元件符號說明】 (本發明部分） 可加密多頻影音傳揍裝置丄 多頻解調器1 1 類比數位轉換器1 i i 加密轉換器1 2 數位訊號處理器121 頻道解碼器122 匯流排介面1 3 電腦1 4 (習用部分） 影音信號傳接裝置2 解調器2 1 頻道解碼器2 2 轉換器2 3 匯流排介面2 4 200934237 電腦2 5 影音信號傳接裝置3 ATSC解調器3 1 頻道解碼器3 2 DVBT解調器3 3 頻道解碼器3 4 ISDB解調器3 5 頻道解碼器3 6 多工器3 7 轉換器3 8 匯流排介面3 9= With the use of = to make the invention more progressive, more practical, more suitable for σ users, it is indeed in line with the invention patent application to file a patent application according to law. However, the above is only the preferred embodiment of the present invention, and ▲ is not limited to the scope of the present invention; &, the simple equivalent of the scope of the invention and the content of the invention Changes and modifications are still within the scope of the invention. 〇 14 200934237 [Simplified illustration of the drawings] Fig. 1 is a block diagram of the circuit of the present invention. Fig. 2 is a block diagram showing the circuit of the first prior art. Figure 3 is a block diagram of a second conventional technique. [Main component symbol description] (part of the present invention) Encryptable multi-frequency video transmission device 丄 multi-frequency demodulator 1 1 analog digital converter 1 ii encryption converter 1 2 digital signal processor 121 channel decoder 122 bus interface 1 3 Computer 1 4 (conventional part) AV signal transmission device 2 Demodulator 2 1 Channel decoder 2 2 Converter 2 3 Bus interface 2 4 200934237 Computer 2 5 AV signal transmission device 3 ATSC demodulator 3 1 Channel Decoder 3 2 DVBT Demodulator 3 3 Channel Decoder 3 4 ISDB Demodulator 3 5 Channel Decoder 3 6 Multiplexer 3 7 Converter 3 8 Bus Interface 3 9