TW535435B - Universal digital broadcast system and methods - Google Patents

Abstract

The present invention teaches methods and systems for providing full digital services such as VOD, digital broadcast, as well as a universal set-top-box (STB) capable of handling this variety of digital services. The present invention relates to video-on-demand and broadcast technology. A plurality of hardware architectures and complimentary data transmission methods identifying the distinct services through an electric program guide enable such transmission. The universal STB of the present invention is capable of distinguishing the different services based upon information received in the electric program guide, and designed with unique hardware architecture including a large buffer. The present invention further provides viewing options such as multiple broadcast and virtual VCR timing-shifting features including pausing recording, and freeze framing a broadcast without suffering the volatility and poor quality of an Internet streaming broadcast. Still further, this variety of digital services is provided via a uni-directional communication link.

Description

535435

There are many mechanisms for coding and transmitting digital data. For example, the I said national 〇rganization for Standardizati〇n (or 疋 the Organisation Internationale De

Normal I sat ion (hereinafter referred to as ISO / IEC) is a standard (M PEG-2) for encoding dynamic images and sounds. Because of the existence of this MPEG-2 standard 'and the establishment of its correlation with the present invention, the discussion proposed by the present invention for the first time has its significance. This ISO / IEC MPEG-2 standard was prepared in four documents. The number I SO / I EC 1 3 8 1 8 -1 (system) file specifies the system coding of this specification. It defines a multiplexed (mu 11 i p 1 e X) structure for combining audio and video data and several presentation methods for real-time reproduction of the time information required for a synchronized sequence. The IS 0 / IE C 1 3 81 8-2 (video) document clearly specifies the encoding method of the video data and the decoding process used to reconstruct the day and the day. The ISO / IEC 13818-3 (audio) document clearly specifies the encoding method of the audio data and the decoding procedure used to reconstruct our data. Finally, the procedures for determining the characteristics of the coded bit stream are clearly specified in the No. I / IEC 13818-4 (consistency) document, and the tests are No. IS0 / IEC 13818-1, 13818- 2. Procedures for consistency of requirements set out in the 13818-3 document. These four documents (collectively referred to as the MPEG-2 standard) have been included in the final reference. / In the context of digital broadcasting systems, a multiplexed "bitstream" is performed in accordance with the rules in the MPEG-2 standard, which refers to the basic streaming via packetization

535435 _ _Case No. 90123281_Year. Month: V. Description of the Invention (2) Transport stream consisting of packets (packetized elementary stream or PES) and packets containing other necessary data. The so-called packetized basic stream packet is a data structure used to present elementary stream data. So-called elementary stream — words collectively referred to as (a) coded scenes, (b) coded sounds, or (c) coded bitstreams with a sequence of unique stream identification codes p £ s packets . The transmission stream supports streaming of video and audio streams at the same time. As shown in FIG. 1 of the prior art, the compressed video data 106 of a video sequence 〇2 is decapsulated into a PES packet stream 108, and then decapsulated into another transport stream packet string 112. It should be particularly noted that this video sequence 102 includes a plurality of titles 104 and a combined compressed video data 106. The video sequence is divided into data segments of different lengths, and each segment contains a set of PES packet headers 110 to form a PES packet stream 108. The pES packet stream 1 0 8 is then further divided into several segments, each segment is given a transmission string to show 11 4 to form a transmission stream 11 2 ′, and each group of transmission stream packets 112 is 188 in length Bytes. The transmission stream allows one or more programs with one or more independent time bases to be combined into a single stream. This streaming stream can come in handy when the data is stored or the transmission method is noisy. The rate of the stream and its constituent sub-encapsulated basic streams (PESs) can be fixed or variable. This rate is determined by the program timing reference section in the transmission stream ^^ by ㈣ clack reference fields, or pcR fields) The value and position are defined.

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A PES packet defined in accordance with the mpeg-2 standard includes a pES packet header consisting of a 24-bit start coding section, an 8-bit stream, and a 16-bit pes packet length area of the J & segment. Paragraphs, an operational jpgs title, and loading or data paragraphs 706. These sections are interpreted in the MpEG-2 standard. ^ The main focus of this MPEG-2 standard is on the encoding and transmission of video and audio data. In general, the MPEG_2 standard uses compression algorithms to allow video and audio data to be stored or transmitted more efficiently. Advanced Uranium Technology Figure 2 shows a block diagram showing a digital broadcast system 2 including a digital broadcast server 202 and a video receiver (STB) 204 that can be used to process digital broadcast data. . Figure 2 contains the system's various components, encoding process flow, communication (from digital broadcast server 202 to video receiver 204), and decoded video and audio data in accordance with the MPEG-2 standard. In this unique first proposed broadcast ^ ^ the streaming method used is MPEG-2 transmission streaming. / In the digital broadcast server 202, the video data is transmitted to the video encoder 2 06 'to encode the video data according to the MPEG-2 standard (determined in the document I number 0 / IEC 13818-2), This video encoder 20 sends the encoded video 2 08 to the decapsulator 2 1 0 to decapsulate the encoded video 2 08, and then the decapsulator 210 sends the deblocked encoded video 212 to the transmission stream multiplexer 214. Office. Similarly, in a digital broadcast server, audio data is sent to an audio encoder 216, which is encoded in accordance with the MPEG-2 standard (MPEG-2 standard is specified in the ISO / IEC 13818-3 document). This audio encoder 216 provides editing

53543-5 Amendment No. 1 90123 Deng 1_Year 5. Description of the invention (4) Coded audio 218 goes to decapsulator 22 0, and then the coded audio 218 is decapsulated. The encapsulated encoded audio 2 2 2 is generated by the demultiplexer 2 2 0 and sent to the transmission stream multiplexer 2 1 4. The evening transmission stream multiplexer 214 converts the encoded audio and video packets and transmits the multiplexed data through a distribution facility 2 2 4 A video receiver 204 (set — top — b〇x ), And the so-called distribution facility ^ 4, may be a telephone network or a cable television (catv) system, which uses optical fiber for transmission and uses an asynchronous transfer mode (ATM) transmission protocol. A video receiver (STB) located at the other end of the distribution facility 224 receives a multiplexed transmission stream from a dedicated input stream demultiplexer 230. The transmission stream demultiplexer 230 can separate the encoded audio and video packets according to the packet identification code of a specific packet, send the video packet to the video decoder 232 through the link 238, and send the audio packet through the link 24. Send to the audio decoder 2 3 6 ° Demultiplexing 230 of the transmission stream and send the time information to the clock control unit 234. This timing control unit 234 provides the demultiplexing 230 according to the transmission stream. The time information (for example, based on the value of the pCR field) is used to send the timing output (timing training to seven) to the video decoder 232 and the audio decoder 236. The video decoder 232 generates the same video data before the video encoder is initially fed. Similarly, the audio decoding module 236 also generates the same audio data as before the audio encoder 216 is initially fed. In the video-on-demand VOD architecture of a common protocol, a server or a network of servers is organized in a standard class (hierachicai)

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Case No. 901232S1 V. Description of the invention (5) The client server model communicates with the client to create a request for a data server to the server (Bull) 1. For a client to send a server, a video data file is sent. Video data file), and in the standard client server model, users respond to customer needs. To the data files required by the customer, 2 or more servers can use non-volat memory to local U households, which may be able to file. Compared with the standard client server architecture = received data, at present, due to the existing electric double σ processing (two-way flooding Han Shibi), S%, // Shi Jiacheng *, this provides one-way communication, so people弋 伞 _ $ $ FI k π And the two-way communication facilities just like the mixed cables must consume a lot of money. Instead of the current cost, the services provided are not-affordable for most users. The previous technique is shown in Figure 3 to illustrate a simplified on-demand video i. The center of this system is the video server 31o, and the digital movie distribution route & 0 ^ 6) stored in the movie storage system 314 will be distributed to the distribution facility 314. The so-called distribution facility 3 14 may, for example, be a telephone network or even a cable television (CATV) system (for example, based on the value of PCR fierd), and use optical fiber for transmission and adopt asynchronous transmission mode ( ATM). This distribution facility 314 uses the routing information provided by the video server 310 to deliver movies to various homes. The video on-demand system 300 includes a plurality of video on-demand system video receivers (V0D STB) 304 suitable for processing on-demand video. Each group of video receivers 304 receives and decodes digital movies, and Into a signal that can be displayed on a TV or camp screen. In addition, this distribution facility 31 4 also contains a

Page 10 535435 m ::, ——---- Segue _90123281 _ ^ Month day amendment V. Description of the invention (6) — · ^ Back channel, allowing viewers to pass through this feedback channel Only then did he control and play digital movies. This feedback channel assigns the instruction sent by the on-demand video system video receiver 3 04 to the feedback server 3 10 through the distribution facility 3 1. The main function of the video server 3 丨 〇 is to specify the compressed digital video signal from its storage location and send it to the demanding view. As a result of the above discussion, there is no main method that can provide both on-demand video and digital broadcasting in a single system. In other words, these methods are being limited by various factors, the most critical of which is the type of stream ^ utilization This is the main method of MPEG-2 streaming. In addition, since the first selected video system requires a two-way communication link for operation, a system is needed to use any existing broadcast media to provide digital broadcasting to a large number of users without replacing existing facilities. On-demand video table service. In addition, a method is needed to provide viewers with features such as multi-channel broadcasting and the time-shifting features actually possessed by VCRs, such as operation functions such as pause, recording, and picture freezing, without having to suffer from poor network streaming propagation stability and The quality is not painful, and it is even more necessary to provide a guide function through a one-way communication link. Summary of the Invention Tong Guangxi particularly proposed methods and systems capable of providing complete digital services, broadcasting systems (VOD), digital broadcasting, and time shifting by any ', one line, or, for example, a universal video receiver (STB), etc.

銮 号 9_〇123_ggl

535435 V. Description of the Invention (7) Generally can handle various digital services. The first embodiment of the present invention is a general-purpose broadcast system that reads one-way communication links with too many channels and provides complete digital services. These channels can be used to provide on-demand video systems vOD or digital broadcasting, but Other channels may be licensed for other uses, so the invention does not provide additional services. That, "This so-called universal broadcast system includes a digital broadcast circuit system that can be used to order digital broadcast broadcast transmissions in this system. This digital broadcast circuit system contains multiple sets of digital broadcast data sources, and from the base :, = Material encoder, group, basic data combining device, basic channel servo number, basic channel frequency increasing inverter, etc. k and material editing hi-hat are more than eight seconds above + + for negative broadcasting materials, these digital assets = code Connect with —zhizhiwei—data source, and can; “丄: The shellfish received is encoded into a digital program stream format. The data merge in the main stream format basically merges the digital stream data. The number of attacks f. The feeder of this channel is combined with the data. The basic channel is combined with the digital Qinliu data. It is used to connect the basic modulation server of Jiang, and it can update the frequency signal of this universal broadcast system. The connected person amplifies 3§ L is connected to the basic channel circuit system. Received & 1 frequency = combined amplifier can be used to amplify, process and combine the second, ίδ, and basic audio frequency signals of the amplifier. The combination of the universal broadcast system and the second communication system is transmitted via a unidirectional communication medium.

525435 901232R1 a Amendment 5. Description of the invention (8) t 阙 jg 3 " JK + on the day of issue, through a second frequency step by step: this universal broadcast system :, a central control server,-special /, General selection of poor materials. This function is transparent = On-demand circuit system storage f ί — Channel on-demand data supply and data selection circuit system package; set to achieve. This equipment is equipped with a server, -local memory, one; = feed = cp: the second channel is wide. The two-channel server can set up 1 ^ and a network interface. This step becomes the digital data of the second modulation order frequency in local memory. This data is converted to Gd on the second channel linked with the selected circuit, and is provided to the second channel feeder. ==== The second audio frequency signal i channel is calculated and stored; first, the transmission matrix of the second material file is selected. The 2nd Central 2nd Middle School is used to transfer the round funds for the 2nd Central Controlled Feeder China: more]: can step forward to provide information. The soil of the Department is to add, modify, and update the sergeant: One of the points clearly refers to * '— the computer can use a broadcast station channel to transmit digital broadcast data, = Department, first-channel to transmit on-demand data. In the broadcast system, the UU also uses the basic channels to communicate with each other, a basic channel server, and a server through the: === 播 '::::;: one more two; Γ heart内 ==; Second to pass the electronic program finger bow with interest | = Page 13 535435 ^ & mt 90123281 V. Description of the invention (9) Combination of channel data with on-demand data, then the basic channel and the first and Send. Detailed description of the invention The following embodiments are described in detail, and they are also part of the embodiments. $ 图 图 二 二 考; No, you can copy this through the proposed embodiments; Second: This embodiment has been fully detailed in order to make use of the This example may be used, and modifications of those structural, logical, and electronic changes may also be made, but it cannot be deviated from the spirit and scope of the present invention. The present invention proposes a method and system capable of providing full digital services. On-demand video systems (VOD), digital broadcasting, and time shifting by any broadcast media, or generally capable of processing such as a general-purpose video receiver (STB), etc. Various digital services, most of the hardware architecture and data transmission methods, are distinguished for different services through an electronic program guide, which makes this transmission feasible. The universal video (STB) proposed by the present invention can be based on the The information received in the electronic program guide to distinguish different services, and this universal video receiver (STB) is a single hardware structure design with a large buffer 'further explained, the difference between these digital services' is Provided through a one-way communication link. The discussion of the broadcast server will start from Figure 4 of the digital broadcast server suitable for providing digital broadcast stylization according to the present invention.

Page 14 535435 Five, invention description (10) —- Selective ™, a universal broadcast feed for multiple channels 'Receiver's test chart &' Suitable for use as on-demand video _ Road server will be proposed discuss. ^ < frequency

• T first look directly at Figure 4. The channel part of a digital broadcast server 400 includes multiple video sources 402, multiple digital devices 404, a data integration device 408, and a channel server 41. , _II: Inverter 412 and combined amplifier 414. This video source 402 can provide more than video data (such as cameras, VCRs or TV programs, etc.), or digital data (such as MPEG crotch or MPEG transmission stream). These digital secondary encoders 404 are typical MPEG encoding / conversion hardware device, even if his encoding standard can even use software to complete encoding.

The MPEG program stream output of the digital data encoder 404 is passed to a data combining device 408 to generate a combined data stream 416. The data combining device 408 may have any type suitable for a specific application. For example, if the output of the digital data encoder 4 04 and the input of the channel server 41 0 are both compatible with the Ethernet, the data combination device 408 can be an Ethernet switch. This data merging device 408 may be used again by a computer system having a suitable interface. The channel server 410 is operated on the combined data stream 416 and is used to generate an output 418 composed of packets with sub-blocks and blocks. In the first embodiment, these block numbers will be increased in order. At the end, when the 32-bit or 64-bit width or larger block number is added,

Page 15 No. 535435 9012π «1_ May 5th, invention description (11) is full (such as 232-1, 264-1, 2η-1), then the number returns to zero, each by the channel server 41 〇 The generated packet will have a consistent program identification code [this program identification code will enable the universal video receiver STB to indicate the nature of the received data packet, such as digital broadcast data or on-demand data. In one embodiment, each data combination device 408 and the associated channel server 410 will be in a single device 406. These devices may be generated by individual devices. Block ... and vnn Figure 52 shows the architecture of an on-demand video server 45o according to an embodiment of the present invention. This on-demand video VOD server 450 includes a plurality of video servers corresponding to one channel. Qichuan's exhaust cooling 506, and vehicle technology combined amplifier 414, as shown in the figure through the data assembly i, 〇4, a central control server 502, and-central storage 2 system #, f # will be explained This central control server 502, "5, 5-2-Γ: offline operation", once the channel server 411 is ready for f, it initializes the real-time transmission and stores the data file in a digital format. In the exemplary embodiment, the Y-day storage device 504 uses the central control device 5G2 to store the broadcast to the interface through an authorized computer such as a road (for example, the Ethernet device 411 provides From the central storage in the central storage device 504. The instructions provided by this channel servo 502 are received by J504. The digital data for the video selected by the central control server is sent to the program broadcast by V: /: Each channel server 4 丨 丨 come to the line to complete, to complete the feeder 4U ready to mention 4 = namely ^ shellfish transmission, every-channel eight think, see the flood VOD, send a confirmation to the 1 Page 535435

The central control server 5 02, at this time, China and Macao announced 丨 丨 and ^ Λ. Τ only control the server 5 02 to control the channel server 411 to start the on-demand video vOD transmission. / In a better implementation, the central control server 502 includes a graphical messenger interface (all available) to allow the server provider to arrange for the data transferred by drag-and-drop operation = In addition, The central control server 502 confirms or controls the start or stop of the channel server 4 according to the transmission matrix. The system and method for providing a one-way on-demand video VOD broadcast matrix has been developed in Ho Kui Khoi ) Was proposed in a patent application entitled "Systems and methods for providing videio on demand services for br〇adcast systems". An application was filed on March 31, 2009, with application number 09 / 584,832, and has been incorporated into the final reference. The central control server 502 automatically selects the channel and calculates the transmission matrix for the transmission of the poor material files in the channel. The central control server 502 provides offline information such as the addition, deletion, and modification of data slots (such as interval, type, level). Or a short description, etc.) In addition, the central control server uses the updated data file and the database therein to control the central storage device 504. Each channel server is assigned to a channel and connected to an up-converter 412. The output of each channel server is a modulated intermediate frequency (qAMadrature amplitude modulation (QAM)) frequency, IF), which has a suitable frequency for the corresponding frequency-increasing frequency converter 412. This QAM-modulated IF belongs to the adopted standard. The standard currently used in the United States is DOCSIS (data-〇ver-cable- systems-interface-

Page 17 535435

Case No. 90123281 V. (13) specification) standard, this standard requires an intermediate frequency of about 43.75MHz, a better channel server 4 11 is described in more detail in Figure 7 of the reference. This up-converter 412 converts the IF signal received from the channel server into a radio frequency (RF) signal. This RF signal including frequency and bandwidth is subordinate to the required channel and the standard used. For example, 'the current standard for cable telephone channel 80 in the United States, the frequency of the μ signal is about 559 · 25MHz, and the bandwidth is about 6MHz. The output of this up-converter 41 2 is transmitted to the combined amplifier 4 丨 4, the combined amplified state 41 4 amplifies, processes, and combines the received! ^ Signals, and then sends its output to a transmission medium. 'Figure 6 illustrates a universal broadcast server 500 established according to an embodiment of the present invention. This universal broadcast server 500 provides on-demand and digital data broadcasted by the signal broadcast server. The server includes a video source 402, several digital data encoders 404, and several broadcast devices 406, each of which has a data combination device 408 and a frequency = server 410, and multiple channel servers 411 , Multiple up-converter 412, one. It coincides with the amplifier 414, a central control server 502, and a central storage device 504 connected with a current bank. (2) The data integration devices 408, 410, and 411 are controlled by the central control server 502 of Behrerhui. When the on-demand video service includes the channel '5 when the service is ready', digital broadcasts are combined through serial data flow == Departing from the old line is a better method. Universal Broadcasting System 500 will provide complete digital services such as video-on-demand and digital broadcasting in this way.

Page 18 535435 Case No. 90123281_ V. Description of the invention (14) Figure 7 illustrates an exemplary channel i feeder 4U according to an embodiment of the present invention. This channel feeder combines a cpu55 and a QM modulation. Device 5 5 2, a regional memory 5 5 4 and a network interface 5 5 6, the central control server 502 instructs the CPU 550 to divide the data slot into blocks (or even sub blocks or data packets). To control the entire operation of the channel server 41}. In the case of poor on-demand services, the data block is selected and transmitted according to the transmission matrix provided by the central control server 502. The selected data is encoded and compressed. Data, and then compress the data to the QAM modulator 5 5 2 ° This QAM modulator 552 receives the data transmitted through a bus (such as a PCI, cpu regional bus) or an Ethernet connection. In an exemplary embodiment, This QAM modulator 552 should include a frequency-reduced QAM modulator, two frequency-increased QAM / QPSK burst demodulators with a forward error correction decoder (fror error decoder), or An up-converter, this QAM modulator 55 The output of 2 is a direct input frequency

IF signal of the device 412. Said U network interface 55 6 connects the channel server 411 and other channel servos ^ 1 and the central control server 502 to execute the ordering and control instructions issued by the central control server g 〇2 and sets the status Report to the central control server 502, as well as files received from the central storage device 5 () 4. Files that can be received from the central storage device 504 can be compressed before the instructions of the controller 502 are compressed. In the area 5 of the body, the body 554, in the embodiment of this example, the channel 5 service 411 can be adjusted according to the cable channel bandwidth (6, 6, 5, or 8MHz), qAM page 19 535435 amendment number 90123g ^ V. Description of the invention (15), cross bandwidth (such as QAM64 or QAM256), and the compression standard bit rate of a DOD data stream (such as MPEG-1 or MPEG-2), send one or more DOD Data streaming. y Digital program numbers are broadcast via digital channels according to their bandwidth, modulation system, and required program bit rate (MPEG). For example, in a CATV channel using QAM64 at 6MHz, the maximum channel production疋 27Mb / s' If the required bit rate * 2Mb / s, theoretically 13 digital programs can be transmitted through analog channels, but in reality this number will be smaller due to the above protocol. FIG. 8 illustrates a general STB60 0 ′ proposed according to an embodiment of the present invention. The STB6 0 0 includes a QAM demodulator 602, a CPU 604, a domain memory 608, a buffer memory 61, and Video and audio decoding decoder 612, a graphics overlay module 614, a user interface 618, a communication link 62, and a fast bus 622 connected to these devices. The CPU602 controls all the operations of the general STB600, which is used to select data = in response to the customer's request, decode the selected data, reassemble the decoded data, and store the decoded data to the local memory 608 or the buffer memory. Stupid sends the stored data to the decoder 6 1 2. In this exemplary embodiment, the 'region memory 608 includes a non-volatile memory (such as a hard disk) and a buffer memory 610 composed of volatile memory.

In this embodiment, the QAM demodulator includes a transmitter and a receiver module ^ ^ one or more of the following items: a secret encoding / decoding module, a forward error board positive decoding / encoder, and an adjuster Control, frequency reduction and frequency increase processor, CPU and memory interface circuit. This QAM demodulator 602 receives the modulated IF

Page 20 535435 Amendment No. 90123281 Fifth, the description of the invention (16) signal, and simplified and demodulated it into recovery data. In this exemplary embodiment, when this entry right is obtained, I can at least decode-data, and convert / merge / instruction 'such as play, stop, pause, step, rewind, former house-out Decode = 6〗 2 and output decoded data to an output device 624 for guests = 2: 'These output devices 624 can be any suitable device computer, other suitable display monitor, or cassette recorder TV, this graphic The overlay module 614 uses, for example, to increase the overlap (alh does not consume only bismuth orders. This graphics overlay module 614 can also be used to accelerate graphics in video game materials. For example, when Service 4 is used, this invention also proposes When the system is used to provide on-demand game services. The main host 618 can make users of the STB600 and devices such as remote controls, keyboards, badges, and other devices available. Taxi 6j provides additional communication links. This may be linked to. Second, the use of one-way communication to implement the 'data bus 622 is a better second-hand real-time data communication, several people used to order as necessary in the present invention and so on. Examples such as universal serial bus Φ In this non-standard embodiment, although the data files are broadcast to all J TV users, only the users who own the TV can broadcast to all users who have decoded and enjoy the data on-demand service. In the case of = users, the data will be transmitted along with the data. The selected license can be obtained through a user ;: page 21, 535435. Case No. 90123281 V. Description of the invention (17) Smart card store or a fixed rate system from the service provider Data file. In the preferred embodiment, any desired data can be obtained at any time to start broadcasting. When more and more response time will follow the evaluation assigned by the source more and more, the above example illustrates that it will not be affected by this. This is discussed above to obtain the system. The smart card may be sold and installed by the owner. In another demonstration: Xing Shi provides users with unlimited access rights to all the data that can be accessed. The amount of time between the data slot case 'from the time the customer presses the selection key to the time' is the so-called response is configured to provide the DOD service. This is short. In an exemplary embodiment, Quality and service time can be determined. Particular embodiments of the present invention exemplary, limiting embodiment of the present invention on the specific embodiment,

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Figure 1 (previous technique) illustrates the process of compressing the packet stream with caution. σ 4 knives Sealed into a seal Figure 2 (previous technique) is created with the graphic% a day, a simplified M system that is based on the MPEG-2 standard and expressed as a block flow chart. Figure 3 (previous technique) illustrates the flow chart of the video on-demand v function block diagram. "Figure 4 is a block flow diagram of a server according to the present invention. Figure 5 is a block flow diagram of another server according to the present invention. The digital propagation established by the embodiment serves the on-demand video created by the embodiment. Fig. 6 is a block flow diagram of a general-purpose digital data server created according to yet another embodiment of the present invention. Fig. 7 is a channel server established according to an embodiment of the present invention and used to transmit on-demand video data Block diagram. Figure 8 is a block diagram of the hardware structure of a universal video receiver STB, which is established according to another implementation of the present invention. Explanation of drawing numbers: 1 0 2 video sequence I 0 6 compressed video Data 110 PES Packet Header II 4 Transmission Stream Header 202 Digital Broadcast Server 1 04 Header I 08 PES Packet Stream II 2 Round-Robin Streaming 20 0 Digital Broadcasting System

Page 23 535435 Case No. 90123281 92 / Battle: Λ: _ Revision diagram Simple description 204 Video receiver 2 0 8 Coded video 2 1 4 Transmission stream multiplexer 2 1 8 Coded audio 2 2 2 Coded audio 2 3 0 Transmission Stream Demultiplexer 234 Timing Control Unit 238, 240 Link 3 1 0 Video Server 3 1 4 Distribution Facility Receiver (VOD STB) 4 0 0 Server 404 Data Encoder 408 Data Merging Device 412 Frequency Inverter 4 1 6 Data Stream 450 VOD Server 5: 0 0 Universal Broadcast Server 504 Central Storage Device 5 52 QAM Modulator 5 5 6 Network Interface 6 02 QAM Demodulator 6 0 8 Regional Memory 6 1 2 Decoder 2 0 6 Video encoder 2 1 0 Packetizer 2 1 6 Audio encoder 2 2 0 Packetizer 2 2 4 Distribution facility 2 3 2 Video decoder 2 3 6 Audio decoder 3 0 0 Video on-demand system 3 1 2 Storage System 3 0 4 On-demand video system Video connection 4 0 2 Video source 40 6 Digital broadcasting device 41 0, 411 Channel server 4 1 4 Combined amplifier 418 output

5 0 2 Central control server 550 CPU 5 5 4 Area memory

6 0 0 Universal STB 604 CPU 6 1 0 Buffer memory 6 1 4 Graphics overlay module

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Claims (1)

535435 ☆ Into it l :: & services are provided through a one-way communication link through multiple channels, purely through a variety of channels, and its channels provide either on-demand video or digital transmission. This universal communication system includes: The digital transmission circuit is an f digital transmission channel used as a basic channel of a universal transmission system. The basic digital transmission circuit includes: a basic digital transmission data source, which respectively provides transmission on the basic channel. A set of digital lean encoders is connected to one of the only related multiple sources. Each digital data encoder can be used to encode the received raw data into a digital program stream format. ^ This lean material merging device is connected to the plurality of sets of digital data encoders. This data merging device can combine the data received in the digital program stream format into a basic merged digital stream data; a basic channel server, connected to all The data merging device described above, the basic channel server can be generated from the basic merging of digital streaming data; a basic frequency increase A frequency converter connected to the basic channel server, the basic frequency-increasing frequency converter can be used to convert the basic modulation intermediate frequency signal into a basic audio frequency signal; and a combined amplifier connected to the basic channel circuit, The combined amplifier can process and combine the received audio frequency signals, such as the above-mentioned basic audio frequency signals. The combined amplifier is suitable for transmitting the above-mentioned multiple channels through a single communication medium. ‘2. The universal communication system as described in the first item of the patent application, Page 53543S Basic Digital Propagation Source 'is at least 1 an analog video source. 3 · If the second item of the scope of the patent application is m. The source of the video is the general communication system of phase a ", where the kind of wooden camera is the analog video camera. The second source of the scope of the video is the _ analog video broadcast system recorder. 5 · If the scope of the patent application is-the general broadcast system of the video broadcast source m You 木 Muhara TV source. 6 items; : =; The general communication system around item-, where the-multiple basic digital transmission sources, at least-the item is-digital video source.: Ϊ́ :: The general communication system of the sixth item of the patent scope, where the digital The video source is the _MPEG data slot. &Amp; If the universal communication system of the sixth item in the scope of patent application, the digital video source is-mpeg streaming stream. Propagation system, in which at least one of the plurality of digital lean encoders is an MpEG encoder. 10. The general propagation system according to the first item in the scope of patent application, wherein 535435 1 ^ 90123281 VI. Scope of patent application Basic information combining device and the basic device described therein are basically a single device. The channel server is assembled with the S system, the circuit of which is described in the above. First, it is 11. The basic digital transmission circuit such as the general transmission system in the item 范围 of the patent application is the above-mentioned multiple digital transmission. Part of the passage. 1 2 · As for the universal communication system in the scope of the patent application, the universal communication system further includes: a central control server as described in,, / /; a central storage device stores data as a pre-selected data The basic data on-demand circuit is used as the first backup of this universal transmission system. The second channel described here is a data on-demand channel. The United States: j On-demand circuits include: " ^ A second channel The server includes a second channel servo CPU, a region memory, a modulator, and a network interface. The second channel server can generate a second channel from the digital data stored in the region memory. Modulate the intermediate frequency signal; a second channel up-converter is connected to the above-mentioned second channel server, this second channel up-converter can convert the above-mentioned second modulated intermediate frequency signal into a second audio signal The frequency signal is provided to the above-mentioned combination amplifier. 1 3 · The general communication system according to item 12 of the scope of patent application, wherein said 535435 The central control server sends the array to the first pass, which can be used to select the central storage channel of the second and second channels, and calculates the transmission asset on the device. The "reporting server" can further perform offline addition, deletion and update of the shell material on the second control server. 15. If the universal dissemination system of item 12 of the scope of patent application, the central control server described by the customer in A, manages the files stored on this central storage device. 0 16 · —A universal dissemination system ' Provides full digital services to communication links' and its channels provide either on-demand video or digital broadcasting. This universal broadcasting system includes: The basic digital broadcasting circuit is a digital broadcasting channel used as the basic channel of the universal broadcasting system. 'This basic digital propagation circuit includes: multiple sources of basic digital propagation data, each of which provides data in a digital propagation mode on the basic channel described; multiple sets of digital data encoders, each connected to a single related multiple data source One of them, each digital data encoder can be used to encode the received data into a digital program stream format; a basic data combining device is connected to multiple sets of digital data encoders, and the data combining device can receive the digital program Streaming format data is merged into a basic merged digital streaming data Page 29, 535435, case number 901 ?, amended in 1981. 6. Patent application scope. 1. A basic channel server, which is connected to the data merging device. This basic channel server can be generated by basically merging digital streaming data. A basic up-converter is connected to the basic channel server, and this basic up-converter can be used to convert this basic modulation intermediate frequency signal into two basic audio frequency signals; and, a combined amplifier is connected to the said Basic channel circuit. This combined amplifier can process and combine the received audio frequency signals, such as the above-mentioned basic audio frequency signals. The combined amplifier is suitable for transmitting the above multiple channels through two single communication media; a central control servo For basic use, the on-demand circuit-first area memory server can be changed from variable intermediate frequency to first-time device. The central storage data on-demand option includes: a channel feed, a modulator, and a network storage data as a circuit. As the two channels, the data is transmitted on demand and is stored on the selected frequency. Signal; the second channel is added to the second channel is replaced by the second server, which contains a digital frequency converter in the data domain memory of the second frequency interface, and the connected frequency converter can send the audio frequency signal to the first And provide the preparation of data; the second channel of the system, this basic data channel servo CPU, a 'this second channel server' generates a second channel of the second channel servo two modulation to change the intermediate frequency to the above-mentioned combined amplifier Π. For example, the universal communication system for the sixteenth item of the scope of patent application, in which the household is described on page 30, 535435 ^ S_i012328I_. Sixth, the patent application scope of the foolproof material merging device and the basic channel servo described therein form a single device. Installed as a corrector is a universal propagation system, where the a is the sixteenth of the patent scope of ... -m: The bit propagation circuit is a part of the general transmission circuit of the above-mentioned various digital propagation circuits. . The broadcasting system's application for the universal communication system of the sixteenth patent application, the array described in the above is stored in the channel f to select the first channel, and calculate a transmission data transmitted on the central storage device of the first channel. . 2 of 0 φΙΙ ^ The 16th item of the universal transmission of the patent, and the centrally controlled feeding device described in the above, can be called the "first" information file, and perform offline research. Second, add, delete and update the engraving on the control server. 21. The central control server of the sixteenth in the scope of application for a patent, which manages the German communication system, as described in the above. File 22 stored on this central storage device — a universal communication system that provides full digital services, and its one-way communication link to the channel ^ channel provides one of the two, this universal communication system is for on-demand video Or digital transmission of multiple groups of digital transmission circuits, each one: two corresponding channels in multiple groups of channels: is a tool of the above-mentioned general transmission system, each group is a digital transmission frequency. Page 31 535435 i No. 901M9S1 VI. The scope of patent application, which can be produced through the corresponding channel-central control feeders; raw digital transmission of data; a central storage device stores data as a preparation for on-demand data. Multiple sets of poor materials on-demand The circuit, as a preparation for Bu, + ,, SM, and Ten, the corresponding part 'each-group is-data p # H system's channel corresponding channel generates on-demand data, each of which can pass the relative nTT ^ Τ Ganbei The on-demand circuits include a corresponding channel server, a local memory server, and a network interface of the right-handed servo CPU. The centrally-controlled servo drives mentioned above are widely used to select special features. The data is on-demand channels and calculated ;; :: with; the transfer fee on the central storage device of r =; control the data broadcast on the feeder to increase offline: Contains the following actions: Digital transmission of data transmission 2 3 · —A method of general data transmission via a computer is provided, which provides a basic channel server suitable for performing through the basic channel; for a server suitable for using a chip and two channels; providing transmission of information before data transmission; Two channels perform on-demand data transmission. One basic channel server for data on-demand transmission.-Contains an electronic program guide with interest. The channel contains on-demand data indicating that this basic channel contains digital dissemination data. 1st; and —k The above basic channel and the second channel combine and transmit data 535435, --- _Case No. 90123281_Year Month Day Amendment Page 33