TWI401956B - Transport stream processing apparatus capable of storing transport stream before the transport stream is descrambled and then descrambling the stored transport stream for playback - Google Patents

Description

Ability to store the transport stream before the transport stream is descrambled and descramble the stored transport stream for playback Transport stream processing device

The present invention relates to the processing of a Transport Stream (TS) derived from a digital television signal, and more particularly to a transport stream processing apparatus capable of storing a transport stream before the transport stream is descrambled. The stored transport stream is descrambled for playback.

The development of multiplexing techniques enables video data, audio data, and system information transmitted through a transport stream to be combined in parallel. Accordingly, the digital data broadcasting industry has overcome the difficulties of traditional analog broadcasting and can provide high value-added multimedia services to service users. For example, the United States uses the Advanced Television Systems Committee (ATSC) standard to transmit television programs to receivers via broadcast wireless communication signals; Europe uses Digital Video Broadcasting (DVB) standards to The television program is transmitted to the receiver through a broadcast wireless communication signal.

In general, the provider of the television program content wishes to protect the various multimedia materials that it broadcasts, and only provides the above-mentioned multimedia material to authorized users. Therefore, a conditional access system has been developed to meet the above requirements. Conditional access systems are designed to control each receiver to determine whether to give viewers a view The right to a particular broadcast television program. The conditional access system is based on the transmission of a program disturbed by control words, which are provided with a set-top box and a personal computer memory card association (Personal Computer Memory Card International Association) inserted in the set-top box. , the PCMCIA) card is received by the user, and the card can be, for example, an ATSC receiver Point Of Deployment (POD) card or a cable card (CableCARD), or a digital television (DTV) receiver universal interface ( Common Interface, CI). The above-described PCMCIA-like cards may allow disturbed programs transmitted through broadcast wireless communication signals to be disturbed and viewed.

With the development of digital broadcasting, the specifications associated with conditional access systems may be modified, requiring a new processing flow for the disrupted transport stream, which is solved by a demodulation transformer. Modulation is generated by the input signal provided by the tuner. Therefore, how to design a device compatible with the updated conditional access specification becomes an important issue for designers.

In order to provide a device that is compatible with the updated conditional access specification, the following technical solution is provided: the embodiment of the present invention provides a transport stream processing device, including: a demodulator module, a transport stream storage module, a multiplexer, Conditional access system interface and transport stream demultiplexer. The demodulator module is configured to demodulate the variable input signal to generate a first transport stream; the transport stream storage module is configured to store the second transport stream; the multiplexer has an output port, and is configured to receive the first transport stream. An input port and a second input port for receiving the second transport stream, wherein the multiplexer optionally couples the first input port or the second input port to the output port; the conditional access system interface is coupled to the multiplexer The output of the device is configured to be coupled to the conditional access module. When the conditional access module is coupled to the conditional access system interface, the conditional access system interface transmits the output of the multiplexer and outputs The transport stream is sent to the conditional access module for signal processing. The transport stream demultiplexer is coupled to the demodulation module and the conditional access system interface; when the conditional access module is coupled to the conditional access system interface and complies with the first conditional access specification, The transport stream demultiplexer is configured to process the output of the conditional access module to record the second transport stream to the transport stream storage module; when the conditional access module is coupled to the conditional access system interface and comply with the In the case of the two conditional access specifications, the transport stream demultiplexer is configured to process the output of the demodulation module to record the second transport stream to the transport stream storage module.

Another embodiment of the present invention provides a transport stream processing apparatus, including a transport stream storage module, a transport stream demultiplexer, a conditional access system interface, and a conversion module. The transport stream storage module is configured to store the transport stream; the transport stream demultiplexer is configured to demultiplex the information transmitted by the first input transport stream; the conditional access system interface is coupled to the transport stream demultiplexer and configured to be coupled The conditional access module, wherein when the conditional access module is coupled to the conditional access system interface, the conditional access system interface transmits the second input transport stream to the conditional access module for use in the signal Processing, and transmitting the processed transport stream generated by the conditional access module to the transport stream demultiplexer; the conversion module is coupled to the transport stream storage module and configured to receive the transport stream stored in the transport stream storage module The input port is coupled to the first output port of the transport stream demultiplexer and the second output port coupled to the conditional access system interface, wherein the conversion module is optionally transmitted and received from the input through the first output port传输Transport stream to transport stream solution multiplexing The transmission stream received from the input port is transmitted to the conditional access system interface through the second output port.

The embodiment of the invention further provides a transport stream processing device, which comprises a transport stream storage module, a transport stream demultiplexer, a multiplexer and a conditional access system interface. The transport stream storage module is configured to store the transport stream; the transport stream demultiplexer is configured to solve the information transmitted by the multiplex through the input transport stream; the multiplexer has a coupling to the transport stream storage module and is configured to receive and store in the transport stream storage. a first input port, a second input port, and an output port coupled to the transport stream demultiplexer, wherein the multiplexer selectively couples the first input port or the second input port to the output The conditional access system interface is coupled to the second input port of the transport stream storage module and the multiplexer, and is configured to be coupled to the conditional access module, wherein the conditional access module is coupled to the condition When accessing the system interface, the conditional access system interface transfers the transport stream stored in the transport stream storage module to the conditional access module for signal processing, and transfers the processing generated by the conditional access module Flow to the second input port of the multiplexer.

An embodiment of the present invention further provides a transport stream processing apparatus, including a first transport stream storage, a second transport stream storage, a conditional access system interface, and a transport stream demultiplexer. a first transport stream store for storing the first transport stream; a second transport stream store for storing the second transport stream, wherein the second transport stream store is physically separate from the first transport stream store; the conditional access system interface The method is coupled to the second transport stream storage device and configured to be coupled to the conditional access module, wherein when the conditional access module is coupled to the conditional access system interface, the conditional access system interface is transmitted and stored The second transport stream of the second transport stream storage module is sent to the conditional access module for signal processing, and the output conditional access module is generated The processed transport stream; the transport stream demultiplexer is coupled to the first transport stream store and the conditional access system interface for demultiplexing information transmitted through the first transport stream or the processed transport stream.

The embodiment of the invention further provides a transport stream processing device, which comprises a demodulation module, a transport stream storage module, a transport stream demultiplexer and a conditional access module. The demodulator module is configured to demodulate the variable input signal to generate a first transport stream; the transport stream demultiplexer is coupled to the demodulator module for processing the first transport stream to record the second transport stream to the transport stream The storage module, wherein the second transport stream is a scrambled transport stream; the conditional access module is coupled to the transport stream storage module and the transport stream demultiplexer, and the conditional access module is stored and stored in the transport stream. The second transport stream of the module is configured to generate a transport stream to the processing of the transport stream demultiplexer, and the transport stream demultiplexer demultiplexes the information transmitted by the processed transport stream.

The transport stream processing apparatus described above is capable of selectively transmitting a transport stream so as to be compatible with updated conditional access specifications.

Certain terms are used throughout the description and following claims to refer to particular elements. It should be understood by those of ordinary skill in the art that hardware manufacturers may refer to the same elements by different nouns. The scope of this specification and the subsequent patent application do not use the difference of the names as the means for distinguishing the elements, but the difference in function of the elements as the criterion for distinguishing. The term "including" as used throughout the specification and subsequent claims is an open term and should be interpreted as "including but not limited to". In addition, "coupling" The term here includes any direct and indirect electrical connection means. Therefore, if a first device is coupled to a second device, it means that the first device can be directly electrically connected to the second device or indirectly electrically connected to the second device through other devices or connection means.

The present invention provides a transport stream processing apparatus that is compatible with the specifications of different conditional access systems. In particular, the present invention provides a transport stream processing device that is a cost effective system for processing personal video recordings when inserted into a Common Interface Plus (CI+) card, a CI/POD card, or without card insertion ( Personal Video Recording (PVR) function and playback function of recorded transport stream. Moreover, the present invention can process the disturbed transport stream stored in the transport stream storage module and the descrambled transport stream stored in the transport stream store. The details of the above technical solutions are detailed below.

Figure 1 is a schematic diagram of a transport stream processing apparatus according to a first embodiment of the present invention. The transport stream processing apparatus 100 includes a demodulation module 102, a multiplexer (MUX) 104, a conditional access system interface 106, a transport stream demultiplexer 108, a transport stream storage module 110, and a conversion module 112. But not limited to this. The demodulation module 102 is configured to receive an input signal S_IN from a preamble component (eg, a tuner for receiving a wireless communication signal broadcast by a television program content provider, and then downconverting the received wireless communication signal to an input signal S_IN), and then The received input signal S_IN is modulated. The output of the demodulation module 102 is passed to the multiplexer 104 or the transport stream demultiplexer 108, which depends on the operational state of the transport stream processing device 100. As shown, the multiplexer 104 has two inputs 埠P1, P2 and an output 埠P3. The conversion module 112 has one input 埠Q1 and two outputs 埠Q2. Q3. The multiplexer 104 is selectively coupled to the output port 3P3 to the input port 1P1 or the input port 埠P2, wherein the input port 1P1 is coupled to the demodulation module 102 for receiving the output of the demodulation module 102. P2 is coupled to the output 埠Q3 of the conversion module 112 for receiving the recorded transport stream, and the output 埠P3 is coupled to the conditional access system interface 106. The conversion module 112 is selectively coupled to the input port Q1 or the output port Q3, wherein the input port Q1 is coupled to the transport stream storage module 110 for receiving and recording in the transport stream storage module 110. Transport stream. In other words, the conversion module 112 is implemented to transmit the recorded transport stream in the transport stream storage module 110 to the input stream multiplexer 108 of the transport stream demultiplexer 108 or the multiplexer 104. The conditional access system interface 106 is used to couple the conditional access module 101, such as a PCMCIA card that conforms to the POD specification, the CI specification, or the CI+ specification. When the conditional access module 101 is coupled to the conditional access system interface 106, it can descramble the disrupted transport stream provided by the television program content provider, thereby allowing the protected television program to be played on the display. Therefore, when the conditional access module 101 is coupled to the conditional access system interface 106, the conditional access system interface 106 transmits the output of the multiplexer 104 to the conditional access module 101 for signal processing. And the processed transport stream (e.g., the transport stream processed with the descrambling procedure) is then transmitted to the transport stream demultiplexer 108 for further signal processing.

The transport stream multiplexer 108 is coupled to the demodulation module 102, the conditional access system interface 106, and the output 埠Q2 of the conversion module 112 for performing PVR operations to record audio data and video data in the form of a transport stream. And system information, and is used to perform a multiplex operation to solve the multiplexed video data, audio data, and system information transmitted through the recorded transport stream. In addition, the transport stream demultiplexer 108 can also perform a filtering operation to extract an input transport stream. a desired packet; performing an encryption operation on the transport stream before the transport stream is recorded to the transport stream storage module 110; and performing a decryption operation on the encrypted transport stream before being output.

In this embodiment, the transport stream demultiplexer 108 can selectively perform a PVR operation on the output of the demodulation module 102 or the output of the conditional access system interface 106 to record the transport stream to the transport stream storage module. 110. For example, when no conditional access module is coupled to the conditional access system interface 106, or the conditional access module 101 is coupled to the conditional access system interface 106 and complies with the second conditional access specification. (eg, CI+ specification), the transport stream demultiplexer 108 processes the output of the demodulation module 102 to record the transport stream to the transport stream storage module 110; and when the conditional access module 101 is coupled to The conditional access system interface 106 and the first conditional access specification (eg, POD/CI specification) different from the second conditional access specification, the transport stream demultiplexer 108 processes the conditional access system interface The output of 106 is to record the processed transport stream to the transport stream storage module 110.

In addition, the transport stream demultiplexer 108 can also selectively demultiplex the information transmitted through the output of the conditional access system interface 106 or the transport stream recorded by the transport stream storage module 110 to generate an output signal S_OUT. For example, when no conditional access module is coupled to the conditional access system interface 106, or the conditional access module 101 is coupled to the conditional access system interface 106 and complies with the first conditional access specification. (For example, POD/CI specification), the transport stream demultiplexer 108 performs a demultiplexing operation on the transport stream stored in the transport stream storage module 110; when the conditional access module 101 is coupled to the conditional access Transport stream demultiplexer when the system interface 106 complies with the second conditional access specification (eg, CI+ specification) 108 performs a demultiplexing operation on the transport stream processed by the conditional access module 101. Further, the transport stream demultiplexer 108 can also perform a demultiplexing operation on the output of the demodulation module 102 to generate an output signal S_OUT for subsequent signal processing stages (eg, decoding and display).

The transport stream processing apparatus 100 in FIG. 1 can perform the PVR function and the playback function of the recorded transport stream under different conditions. Please refer to Figure 2 in conjunction with Figure 1. Fig. 2 is a schematic diagram showing the operation of the transport stream processing apparatus 100 in the first diagram when the conditional access module is inserted. Since no conditional access module is coupled to the conditional access system interface 106, the demodulation module 102 demodulates the variable input signal S__IN to generate a first transport stream TS_1 to the transport stream demultiplexer 108. The transport stream demultiplexer 108 performs a PVR operation on the first transport stream TS_1 to record the second transport stream TS_2 to the transport stream storage module 110. In this embodiment, the conversion module 112 is controlled to couple the input 埠Q1 to the output 埠Q2. As for the playback of the second transport stream TS_2 recorded in the transport stream storage module 110, the transport stream demultiplexer 108 demultiplexes the information transmitted through the input transport stream (eg, the recorded second transport stream TS_2) to generate an output. Signal S_OUT to the subsequent signal processing stage. For example, the system information included in the second transport stream TS_2 is output to a microcontroller (not shown); the audio data included in the second transport stream TS_2 is output to an audio decoder (not shown); And the video data included in the second transport stream TS_2 is output to a video decoder (not shown).

Please refer to Figure 3 in conjunction with Figure 1. Fig. 3 is a view showing the operation of the transport stream processing apparatus 100 in Fig. 1 when the CI/POD card is inserted. In this embodiment, the conditional access module 101 conforming to the CI or POD specification is coupled to the conditional access system interface 106. therefore, The multiplexer 104 is controlled to couple the input 埠P1 to the output 埠P3, and the conversion module 112 is controlled to couple the input 埠Q1 to the output 埠Q2. The demodulation module 102 demodulates the variable input signal S_IN to generate a first transport stream TS_1 to the conditional access module 101 for signal processing (eg, descrambling). Next, the conditional access system interface 106 transmits the processed transport stream TS_1' generated by the conditional access module 101 to the transport stream demultiplexer 108. The transport stream demultiplexer 108 then performs a PVR operation on the processed transport stream TS_1' to record the second transport stream TS_2 to the transport stream storage module 110. It should be noted that the second transport stream TS_2 stored in the transport stream storage module 110 under the above conditions may be a descrambled transport stream. As for the playback of the second transport stream TS_2 recorded in the transport stream storage module 110, the transport stream demultiplexer 108 demultiplexes the information transmitted through the input transport stream (eg, the recorded second transport stream TS_2) to generate an output. Signal S_OUT to the subsequent signal processing stage for further signal processing.

Please refer to Figure 4 in conjunction with Figure 1. Fig. 4 is a view showing the operation of the transport stream processing apparatus 100 in Fig. 1 when the CI+ card is inserted. In this embodiment, the conditional access module 101 complying with the CI+ specification is coupled to the conditional access system interface 106. Therefore, the multiplexer 104 is controlled to couple the input 埠P2 to the output 埠P3, and the conversion module 112 is controlled to couple the input 埠Q1 to the output 埠Q3. The demodulation module 102 demodulates the variable input signal S__IN to generate a first transport stream TS_1 to the transport stream demultiplexer 108. Next, the transport stream demultiplexer 108 then performs a PVR operation on the first transport stream TS_1 to record the second transport stream TS_2 to the transport stream storage module 110. It should be noted that the second transport stream TS_2 stored in the transport stream storage module 110 under the above conditions may be a scrambled transport stream. As for the playback of the second transport stream TS_2 recorded in the transport stream storage module 110, the second transport stream TS_2 is transmitted to the conditional access The module 101 is used for signal processing (e.g., descrambling), and then the conditional access system interface 106 transmits the processed transport stream TS_2' generated by the conditional access module 101 to the transport stream demultiplexer 108. Next, the transport stream demultiplexer 108 demultiplexes the information transmitted through the input transport stream (e.g., the processed transport stream TS_2') to produce the output signal S_OUT to a subsequent signal processing stage for further signal processing.

It should be noted that the signal processing scheme implemented when the transport stream processing apparatus 100 operates together with the inserted CI+ card is not limited to the embodiment shown in FIG. For example, in an alternative design, when the transport stream processing apparatus 100 operates on the inserted conditional access module 101 as a CI+ card, the same hardware configuration as shown in FIG. 3 can be implemented. The recording of the transport stream that has been processed by the conditional access module 101, and the playback of the recorded transport stream in the transport stream storage module 110. In other words, even if the conditional access module coupled to the conditional access system interface is a CI+ card, the descrambled transport stream can be recorded to the transport stream store by the PVR operation.

In the embodiment shown in FIG. 1, the transmission of the recorded transport stream stored in the transport stream storage module 110 is controlled by the conversion module 112. However, the above situation is for illustrative purposes only, and other alternative designs are also possible. Please refer to Figure 5. Figure 5 is a schematic diagram of a transport stream processing apparatus in accordance with a second embodiment of the present invention. The configuration of the transport stream processing apparatus 500 in FIG. 5 is similar to the configuration of the transport stream apparatus 100 in FIG. 1, the main difference being that the multiplexer 502 replaces the conversion module 112 to control the data path of the transport stream. As shown, the multiplexer 502 has two inputs R1, R2 and an output R3, wherein the input R1 is coupled to the transport stream storage module 110 for receiving transmissions stored in the transport stream storage module 110. The input port R2 is coupled to the conditional access system interface 106 for receiving the transport stream of the processing generated by the conditional access module 101; and the output port R3 is coupled to the transport stream demultiplexer 108. The multiplexer 502 is implemented to selectively couple the output 埠R3 to the input 埠R1 or the input 埠R2. In other words, the multiplexer 502 transmits the transport stream recorded in the transport stream storage module 110 or the transport stream generated by the conditional access module 101 to the transport stream demultiplexer 108.

Similarly, the transport stream processing apparatus 500 in FIG. 5 can perform the PVR function of recording the transport stream and the playback function of the recorded transport stream under different conditions. Fig. 6 is a view showing the operation of the transport stream processing apparatus 500 in Fig. 5 when no conditional access module is inserted. In this embodiment, the multiplexer 502 is controlled to couple the input R1 to the output R3. Fig. 7 is a view showing the operation of the transport stream processing apparatus 500 in Fig. 5 when the CI/POD card is inserted. In this embodiment, the multiplexer 104 is controlled to couple the input 埠P1 to the output 埠P3, and the multiplexer 502 is controlled to couple the input 埠R1 to the output 埠R3. Fig. 8 is a view showing the operation of the transport stream processing apparatus 500 in Fig. 5 when the CI+ card is inserted. In this embodiment, the multiplexer 104 is controlled to couple the input 埠P2 to the output 埠P3, and the multiplexer 502 is controlled to couple the input 埠R2 to the output 埠R3. After reading the relevant paragraphs of the embodiment shown in Figures 2-4, those skilled in the art should understand the operation of the embodiment shown in Figures 6-8. For the sake of brevity, the detailed description will not be repeated here.

Figure 9 is a schematic diagram of a transport stream processing apparatus according to a third embodiment of the present invention. The configuration of the transport stream processing apparatus 900 in FIG. 9 is similar to the configuration of the transport stream apparatus 100 in FIG. 1 , the main difference being that the transport stream storage module 910 of the transport stream processing apparatus 900 has Two transport stream stores 912 and 914 that are physically separate from each other. Transport stream stores 912 and 914 can be implemented using separate storage devices or by utilizing separate storage spaces in a single storage device. The transport stream storage 912 is implemented to be coupled to the conditional access system interface 106 in an unconditional access module, or the conditional access module 101 is coupled to the conditional access system interface 106 and in accordance with the first conditional The access stream (eg, POD/CI specification) stores the transport stream generated by the PVR operation, and the transport stream store 914 is implemented to couple the conditional access module 101 to the conditional access system interface 106 and follow different The transport stream generated by the PVR operation is stored in the second conditional access specification (eg, CI+ specification) of the first conditional access specification.

Similarly, the transport stream processing apparatus 900 in FIG. 9 can perform the PVR function of recording the transport stream and the playback function of the recorded transport stream under different conditions. Please refer to Figure 10 in conjunction with Figure 9. Figure 10 is a schematic diagram of the transport stream processing apparatus 900 operating in the ninth diagram without the conditional access module being inserted. Since no conditional access module is coupled to the conditional access system interface 106, the demodulation module 102 demodulates the variable input signal S_IN to generate a first transport stream TS_1 to the transport stream demultiplexer 908. The transport stream demultiplexer 908 performs a PVR operation on the first transport stream TS_1 to record the second transport stream TS_2 to the transport stream store 912. As for the playback of the second transport stream TS_2 recorded in the transport stream storage 912, the transport stream demultiplexer 908 demultiplexes the information transmitted through the input transport stream (eg, the recorded second transport stream TS_2) to generate an output signal. S_OUT to the subsequent signal processing stage for further signal processing.

Please refer to Figure 11 in conjunction with Figure 9. Figure 11 is a transport stream processing device in Fig. 9. 900 operates on the schematic diagram when the CI/POD card is inserted. In this embodiment, the conditional access module 101 conforming to the CI or POD specification is coupled to the conditional access system interface 106. Therefore, the multiplexer 104 is controlled to couple the input 埠P1 to the output 埠P3. The demodulation module 102 demodulates the variable input signal S_IN to generate a first transport stream TS_1 to the conditional access module 101 for signal processing (eg, descrambling). Next, the conditional access system interface 106 transmits the processed transport stream TS_1' generated by the conditional access module 101 to the transport stream demultiplexer 908. The transport stream demultiplexer 908 then performs a PVR operation on the processed transport stream TS_1' to record the second transport stream TS_2 to the transport stream storage module 912. As for the playback of the second transport stream TS_2 recorded in the transport stream storage 912, the transport stream demultiplexer 908 demultiplexes the information transmitted through the input transport stream (eg, the recorded second transport stream TS_2) to generate an output signal. S_OUT to the subsequent signal processing stage for further signal processing.

Please refer to Figure 12 in conjunction with Figure 9. Fig. 12 is a view showing the operation of the transport stream processing apparatus 900 in Fig. 9 when the CI+ card is inserted. In this embodiment, the conditional access module 101 complying with the CI+ specification is coupled to the conditional access system interface 106. Therefore, the multiplexer 104 is controlled to couple the input 埠P2 to the output 埠P3. The demodulation module 102 demodulates the variable input signal S_IN to generate a first transport stream TS_1 to the transport stream demultiplexer 908. Next, the transport stream demultiplexer 908 then performs a PVR operation on the first transport stream TS_1 to record the second transport stream TS_2 to the transport stream store 914. As for the playback of the second transport stream TS_2 recorded in the transport stream storage 914, the second transport stream TS_2 is transmitted to the conditional access module 101 for signal processing (eg, descrambling), and then conditional storage Taking the system interface 106 to transfer the processed transport stream TS_2' generated by the conditional access module 101 to the transport stream demultiplexing 908. Next, the transport stream demultiplexer 908 demultiplexes the information transmitted through the input transport stream (e.g., the processed transport stream TS_2') to produce the output signal S_OUT to a subsequent signal processing stage for further signal processing.

Compared with the transport stream processing apparatus shown in FIGS. 1 and 5, since the two transport stream memories 912 and 914 which are independent of each other are implemented, the transport stream processing apparatus 900 in FIG. 9 does not require a conversion module. And a multiplexer to control the data path of the recorded transport stream.

As shown in Figures 1, 5, and 9, when the conditional access module is not coupled to the conditional access system interface 106, or the conditional access module 101 is coupled to the conditional access system interface 106 and is compliant. In the CI+ specification, the demodulation module 102 generates a transport stream to the transport stream demultiplexer 108/908; on the other hand, when the conditional access module 101 is coupled to the conditional access system interface 106 and complies with the POD or In the CI specification, the demodulation module 102 generates a transport stream to the multiplexer 104. In one embodiment, the demodulation module 102 is implemented using a single demodulation transformer that selectively transmits its output to the transport stream demultiplexer 108/908 or multiplexer The input of the device 104 is 埠P1. However, other alternative designs are also possible. For example, the demodulation module can be implemented using two demodulation transformers that are physically independent of each other. One of the demodulators is dedicated to generating a transport stream that is output to the transport stream demultiplexer 108/908, while the other demodulation transformer is dedicated to the transport stream that is output to the input port multiplexer P1 of the multiplexer 104. Please refer to Figure 13. Figure 13 is a block diagram showing an example of a demodulation module using two demodulators. As shown, when no conditional access module is coupled to the conditional access system interface 106, or the conditional access module 101 is coupled to the conditional access system interface 106 and complies with the CI+ specification, demodulation The transformer 1304 is configured to generate a transport stream to the transport stream to demultiplex When the conditional access module 101 is coupled to the conditional access system interface 106 and conforms to the POD or CI specifications, another demodulator 1306 is configured to generate an input stream to the input of the multiplexer 104. P1. In one embodiment, demodulation transformers 1304 and 1306 can share a single tuner. Thus, the input signal S_IN generated by the shared tuner can be passed to demodulation transformers 1304 and 1306. In another embodiment, two independent tuners are coupled to demodulation transformers 1304 and 1306, respectively. Therefore, the input signal S__IN may include a first down conversion result and a second down conversion result, wherein the first down conversion result is generated by one tuner and transmitted to the demodulation transformer 1304, and the second down conversion result is performed by another The tuner is generated and passed to demodulation transformer 1306.

In summary, the present invention provides a transport stream processing apparatus that can perform a PVR function of recording a transport stream and a playback function of a recorded transport stream when a CI+ card, a CI/POD card is inserted, or when no card is inserted. Therefore, the transport stream processing apparatus can process the disturbed transport stream and the descrambled transport stream stored in the transport stream storage module. In a first embodiment of the transport stream processing apparatus, the multiplexer and the conversion module are implemented to control the data path of the transport stream. In a second embodiment of the transport stream processing apparatus, a plurality of multiplexers are implemented to control the data path of the transport stream. In a third embodiment of the transport stream processing apparatus, the multiplexer and the plurality of transport stream stores are implemented as data paths that control the transport stream. In the above manner, the present invention provides a plurality of transport stream processing devices, each of which is compatible with different conditional access specifications. In particular, each transport stream processing device can store the transport stream before the transport stream is descrambled, and then descramble the stored transport stream for playback.

The above description is only a preferred embodiment of the present invention, and anyone who is familiar with the case is assisted by the present invention. Equivalent changes and modifications made by the spirit of the invention are intended to be included within the scope of the appended claims.

100‧‧‧Transport stream processing device

101‧‧‧Conditional Access Module

102‧‧‧Demodulation Module

104‧‧‧Multiplexer

106‧‧‧Conditional Access System Interface

108‧‧‧Transport Stream Demultiplexer

110‧‧‧Transport Stream Storage Module

112‧‧‧Transition module

502‧‧‧Multiplexer

908‧‧‧Transport Stream Demultiplexer

910‧‧‧Transport Stream Storage Module

912, 914‧‧‧Transport stream storage

1302‧‧‧Demodulation Module

1304, 1306‧‧‧ demodulation transformer

Figure 1 is a schematic diagram of a transport stream processing apparatus according to a first embodiment of the present invention.

Figure 2 is a schematic diagram of the transport stream processing apparatus operating in the first diagram without the conditional access module being inserted.

Figure 3 is a schematic diagram of the transport stream processing apparatus operating under the conditions of CI/POD card insertion in Figure 1.

Fig. 4 is a schematic diagram showing the operation of the transport stream processing apparatus in Fig. 1 under the condition of CI+ card insertion.

Figure 5 is a schematic diagram of a transport stream processing apparatus in accordance with a second embodiment of the present invention.

Fig. 6 is a diagram showing the operation of the transport stream processing apparatus in Fig. 5 under the condition that the conditional access module is not inserted.

Figure 7 is a schematic diagram of the transport stream processing apparatus operating under the conditions of CI/POD card insertion in Figure 5.

Figure 8 is a schematic diagram of the transport stream processing apparatus operating under the conditions of CI+ card insertion in Figure 5.

Figure 9 is a schematic diagram of a transport stream processing apparatus according to a third embodiment of the present invention.

Fig. 10 is a view showing the operation of the transport stream processing apparatus in Fig. 9 under the condition that the conditional access module is inserted.

Figure 11 shows the conditions under which the transport stream processing device operates in the CI/POD card insertion in Figure 9. The schematic below.

Figure 12 is a schematic diagram of the transport stream processing apparatus operating under the conditions of CI+ card insertion in Figure 9.

Figure 13 is a block diagram showing an example of a demodulation module using two demodulators.

100‧‧‧Transport stream processing device

101‧‧‧Conditional Access Module

102‧‧‧Demodulation Module

104‧‧‧Multiplexer

106‧‧‧Conditional Access System Interface

108‧‧‧Transport Stream Demultiplexer

110‧‧‧Transport Stream Storage Module

112‧‧‧Transition module

Claims (21)

A transport stream processing device includes: a demodulation module for demodulating an input signal to generate a first transport stream; and a transport stream storage module for storing a second transport stream; And having an output port for receiving a first input port of the first transport stream and a second input port for receiving the second transport stream, wherein the multiplexer selectively selects the first input The second input port is coupled to the output port; a conditional access system interface is coupled to the output of the multiplexer and configured to be coupled to a conditional access module when the conditional When the access module is coupled to the conditional access system interface, the conditional access system interface transmits one of the output and output of the multiplexer to the conditional access module for use in the signal And a transport stream demultiplexer coupled to the demodulation module and the conditional access system interface, wherein the conditional access module is coupled to the conditional access system interface and follows a The transport stream demultiplexer is used to process the condition when the first conditional access specification is An output of the access module to record the second transport stream to the transport stream storage module; when the conditional access module is coupled to the conditional access system interface and subject to a second conditional When the specification is taken, the transport stream demultiplexer is configured to process an output of the demodulation module to record the second transport stream to the transport stream storage module. The transport stream processing device of claim 1, wherein the multiplexer is coupled to the conditional access system interface and conforms to the first conditional access specification. Coupling the first input port to the output port; when the conditional access module is coupled to the conditional access system interface and following the first conditional access specification In the second conditional access specification, the multiplexer couples the second input port to the output port. The transport stream processing device of claim 2, wherein the second conditional access specification is a enhanced universal interface specification. The transport stream processing device of claim 2, wherein the first conditional access specification is a common interface specification or a deployment point specification. The transport stream processing device of claim 1, wherein the demodulation module comprises: a first demodulation transformer coupled to the first input port of the multiplexer for generating to The first transport stream of the multiplexer; and a second demodulation transformer coupled to the transport stream demultiplexer for generating a third transport stream to the transport stream demultiplexer, wherein The second demodulation transformer is physically separate from the first demodulation transformer. The transport stream processing device of claim 1, wherein the transport stream storage module comprises: a first transport stream store for storing the transport stream demultiplexer to process the demodulation module The second transport stream generated by the output; and a second transport stream store for storing the transport stream demultiplexer when the conditional access module is coupled to the conditional access system interface Processing the second transport stream generated by the output of the conditional access module, wherein the second transport stream store is physically separate from the first transport stream store. The transport stream processing device of claim 1, wherein the second transport stream is a scrambled transport stream. A transport stream processing device includes: a transport stream storage module for storing a transport stream; and a transport stream demultiplexer for demultiplexing information transmitted through a first input transport stream; The system interface is coupled to the transport stream demultiplexer and configured to be coupled to a conditional access module, wherein the conditional access module is coupled to the conditional access system interface, the condition The access system interface transmits a second input transport stream to the conditional access module for signal processing, and transmits the conditional access module to generate a processed transport stream to the transport stream demultiplexer And a conversion module having one of the input streams coupled to the transport stream storage module and configured to receive the transport stream stored in the transport stream storage module, coupled to the transport stream demultiplexer a first output port coupled to the second output port of the conditional access system interface, wherein the conversion module selectively transmits the transport stream received from the input port to the transport stream through the first output port Demultiplexer, or through the second output埠Receiving input from the input port of the transport stream to the conditional formula access system interface. The transport stream processing device of claim 8, wherein the conditional access module is coupled to the conditional access system interface and conforms to a first conditional access specification, the conversion module Coupling the input port to the first output port; when the conditional access module is coupled to the conditional access system interface and following the first conditional access specification In one of the second conditional access specifications, the converter couples the input port to the second output port. The transport stream processing device of claim 9, wherein the second conditional access specification is a enhanced universal interface specification. The transport stream processing device of claim 8, wherein the conversion module couples the input port to the first output when no conditional access module is coupled to the conditional access system interface And when the conditional access module is coupled to the conditional access system interface and conforms to a specific conditional access specification, the conversion module couples the input port to the second output port. The transport stream processing device of claim 11, wherein the specific conditional access specification is a enhanced universal interface specification. A transport stream processing device includes: a transport stream storage module for storing a transport stream; a transport stream demultiplexer for demultiplexing information transmitted through an input transport stream; a multiplexer having And coupled to the transport stream storage module and configured to receive one of the first input port, the second input port, and the one of the transport stream demultiplexer stored in the transport stream storage module An output port, wherein the multiplexer selectively couples the first input port or the second input port to the output port; and a conditional access system interface coupled to the transport stream storage module and the The second input port of the multiplexer, and the conditional access system interface is configured to be coupled to a conditional access module, wherein when the conditional access module is coupled to the conditional access system interface , the article The component access system interface transfers the transport stream stored in the transport stream storage module to the conditional access module for signal processing, and transmits the conditional access module to generate a processed transport stream to The second input port of the multiplexer. The transport stream processing device of claim 13, wherein the multiplexer is coupled to the conditional access system interface and conforms to a first conditional access specification Coupling the first input port to the output port; when the conditional access module is coupled to the conditional access system interface and following a second conditional access different from the first conditional access specification In the specification, the multiplexer couples the second input port to the output port. The transport stream processing device of claim 14, wherein the second conditional access specification is a enhanced universal interface specification. The transport stream processing device of claim 13, wherein when the conditional access module is not coupled to the conditional access system interface, the multiplexer couples the first input port to the output port. And when the conditional access module is coupled to the conditional access system interface and conforms to a specific conditional access specification, the multiplexer couples the second input port to the output port. The transport stream processing device of claim 16, wherein the specific conditional access specification is a enhanced universal interface specification. A transport stream processing device includes: a first transport stream store for storing a first transport stream; a second transport stream storage for storing a second transport stream, wherein the second transport stream store is physically independent of the first transport stream store; a conditional access system interface coupled to the first The second stream storage device is configured to be coupled to a conditional access module, wherein when the conditional access module is coupled to the conditional access system interface, the conditional access system interface is stored in the The second transport stream of the second transport stream storage module is sent to the conditional access module for signal processing, and outputting the transport stream processed by the conditional access module; and a transport stream solution The device is coupled to the first transport stream storage and the conditional access system interface for demultiplexing information transmitted through the first transport stream or the processed transport stream. The transport stream processing device of claim 18, wherein the conditional access system interface is coupled to the conditional access system interface and conforms to a enhanced universal interface specification Transmitting the second transport stream stored in the second transport stream storage to the conditional access module. A transport stream processing device includes: a demodulation module for demodulating an input signal to generate a first transport stream; a transport stream storage module; a transport stream demultiplexer coupled to the a demodulation module for processing the first transport stream to record a second transport stream to the transport stream storage module; and a conditional access module, wherein the second transport stream is a scrambled transport stream ; The conditional access module is coupled to the transport stream storage module and the transport stream demultiplexer, and the conditional access module processes the second transport stream stored in the transport stream storage module to generate And a transport stream processed by one of the transport stream demultiplexers, and the transport stream demultiplexer demultiplexes information transmitted through the processed transport stream. The transport stream processing device of claim 20, wherein the conditional access module complies with a enhanced universal interface specification.