KR20010037218A - apparatus and method for extending interface in digital broadcasting receiver - Google Patents

Abstract

PURPOSE: An apparatus and a method for extending an interface of a digital broadcasting receiver are provided to insert external application modules with the limited number of article or more and use the external application modules in a receiver having the limited number of physical socket. CONSTITUTION: A module-extension application module(102) extends an application module. The module-extension application module(102) has a physical socket(102a) for being connected with a host(101) and a physical socket unit(102b) for being connected with an application module unit(103). The application module unit(103) has the first to the nth physical sockets(103a-103n). The physical socket unit(102b) has the first to the nth physical sockets(102b-1¯102b-n).

Description

Apparatus and method for extending interface in digital broadcasting receiver

The present invention relates to a digital broadcast receiver, and more particularly, to an apparatus and method for extending an interface of a digital broadcast receiver.

DVB (Digital Video Broadcasting) system is a standard for digital video broadcasting made in Europe. There are three types of satellite (DVB-Satellite), cable (DVB-C), and terrestrial (DVB-T). The S standard is used.

Among them, satellite and terrestrial reception systems have several interfaces. One of them is DVB-Common Interface (CI).

This common interface inserts a general external application module into the common interface to allow external applications to be freely used by the receiver.

The standard is now adopted in both DVB-S and DVB-T systems, and is also used in US cable receivers.

Hereinafter, the interface device of a DVB receiver according to the prior art will be described with reference to the accompanying drawings.

1 is a diagram illustrating an example of a common interface and an external application module of a DVB receiver according to the prior art, and includes a host 1, which is a DVB receiver, and first and second physical devices connected to the host 1. First and second application modules (2) (3) inserted into a common interface physical socket (2) (3) and the first and second physical common interface physical sockets (1a) (1b), respectively. And the host 1 and the first and second application modules 2 and 3 transmit and receive data through the first and second physical common interface physical sockets 1a and 1b. In this case, DVB-CI is used as a communication protocol.

However, in the interface device of the DVB receiver according to the prior art, when only two physical sockets exist in the receiver, only two external application modules can be supported. Since the module to be used must be inserted after removal, when the number of physical sockets is smaller than the number of application modules that the user wants to use at the same time, all the application modules to be used cannot be used at the same time.

To solve this problem, if a physical socket is extended to a receiver by increasing the number of outlets by using an outlet extension, a data collision occurs between external application modules.

In order to solve the problem of the number of physical sockets, the size of the receiver increases when two or more physical sockets are installed in the receiver, and the number of lines connected to the physical sockets in the receiver increases rapidly. Cause.

Accordingly, the present invention has been made to solve the above problems, and an apparatus and method for extending an interface of a digital broadcasting receiver for inserting and using a limited number of external application modules in a receiver having a limited number of physical sockets. The purpose is to provide.

1 is a diagram illustrating an example of a common interface and an external application module of a DVB receiver according to the prior art.

2 is a diagram illustrating a concept of an interface extension device for a digital broadcast receiver according to the present invention.

3 illustrates a concept of an operating principle of FIG. 2.

FIG. 4 shows an internal block diagram of the Module-Extension Application module of FIG. 2. FIG.

5 is a view showing an embodiment of an interface extension method of a digital broadcast receiver according to the present invention;

6 is a view showing another embodiment of an interface extension method of a digital broadcast receiver according to the present invention.

7 is a view showing another embodiment of an interface extension method of a digital broadcast receiver according to the present invention.

8 is a view illustrating a connection state between layers of a host, a module-extension application module, and a plurality of application modules according to an interface extension method of a digital broadcast receiver according to the present invention.

9 is an application protocol data unit (APDU) between a host, a module-extension application module, and a layer of a plurality of application modules according to an interface extension method of a digital broadcast receiver according to the present invention. A diagram showing the transmission process of

10 is a view showing another embodiment of an interface extension method of a digital broadcast receiver according to the present invention;

Explanation of symbols for main parts of the drawings

110: host 102: module-extension application module

102a, 102b: physical socket

101: application module address decode / control logic section

102: address / data bus controller

203: Memory 204: Control part

205: Host Bus Adapter

103: application module

A feature of the apparatus for extending an interface of a digital broadcast receiver according to the present invention for achieving the above object is a digital broadcast receiver for interfacing a host and a plurality of application modules using a DVB-CI (Digital Video Broadcast-Common Interface) standard. An interface extension of a module, comprising: a module-extension application module having a physical socket for connecting the host and the plurality of application modules, and a plurality of physical sockets for extending the application module. Module) is further included.

The module-extension application module may include an address decode / control logic unit which decodes an address signal transmitted according to a control signal Control Signal1 and outputs a corresponding address and a control signal, and the address; An address / data bus controller for storing the data transmitted according to the address signal output from the decode / control logic unit in the memory and withdrawing the data stored in the memory according to the control signal, and the control output from the address decode / control logic unit A control unit for outputting a signal for controlling the memory according to a signal and controlling communication between a host and a communication and an external application module unit, and a control signal and an MPEG TS to an external application module according to a control signal (Control signal 2) of the control unit Bus Adapter to Send and Receive It is configured to include.

Another feature is to extend the interface by inserting another Module-Extension Application Module into the physical socket for the external application module of the Module-Extention Application Module.

A feature of the method for extending an interface of a digital broadcast receiver according to the present invention for achieving the above object is (a) detecting whether a module-extension application module is inserted in a host, and (b) step (a) If the module-extension application module is inserted in the search result of the step of performing a trans-photo connection process with the module-extension application module to transmit and receive data, and (c) whether to insert the application module in the module-extension application module (D) when the search result application module is inserted in the step (c), performing a transphoto connection process between the module and the extension application module and then transmitting and receiving data; (e) resource of a host in the application module After a session connection procedure for for module-is from the application module through the application module makin extension comprises the step of using the resources of the host.

Step (a) has another feature of repeating steps (d) and (e) when another application module is inserted into the module-extension application module.

The present invention may further configure a module-extension application module between a host and an application module in a receiver having a limited number of physical sockets and insert and use a limited number of external application modules.

Other objects, features and advantages of the present invention will become apparent from the following detailed description of embodiments taken in conjunction with the accompanying drawings.

Hereinafter, a preferred embodiment of an apparatus and method for expanding an interface of a digital broadcast receiver according to the present invention will be described with reference to the accompanying drawings.

FIG. 2 is a diagram illustrating a concept of an interface extension apparatus of a digital broadcast receiver according to the present invention. The host 101, which is a digital broadcast receiver, and a module-extension application module for extending an application module 102 and an application module unit 103.

The module-extension application module 102 is composed of a physical socket 102a for connecting with the host 101 and a physical socket portion 102b for connecting with an application module unit 103.

The application module unit 103 includes first to nth application modules 103a to 103n, and the physical socket unit 102b includes first to nth physical sockets 102b-1 to 102b-n. do.

FIG. 3 is a diagram illustrating a concept of an operating principle of FIG. 2, and FIG. 4 is a block diagram illustrating an internal module-extension application module of FIG. 2, and according to a control signal Control Signal1, an address bus. An address decode / control logic unit 101 which decodes an address signal transmitted through the controller and outputs an address and a control signal corresponding thereto, and an address signal output through an address bus from the address decode / control logic unit 101. The data transmitted through the data bus in the memory 203 and the data stored in the memory 203 in accordance with a control signal, the address / data bus controller 102 and the address decode / control logic ( Outputs a signal for controlling the memory 203 according to the control signal output from the 101 and communicates with the host 101 and an external apple A control unit 204 for controlling communication between the application module units and a host bus adapter for transmitting and receiving control signals and MPEG TSs to an external application module according to a control signal 2 of the control unit 204 ( 205).

5 is a view showing an embodiment of an interface extension method of a digital broadcast receiver according to the present invention, FIG. 6 is a view showing another embodiment of an interface extension method of a digital broadcast receiver according to the present invention, and FIG. Another embodiment of a method for extending an interface of a digital broadcast receiver according to the present invention is shown.

FIG. 8 is a diagram illustrating a connection state between layers of a host, a module-extension application module, and a plurality of application modules according to an interface extension method of a digital broadcast receiver according to the present invention, and FIG. 9 is a digital broadcast according to the present invention. A diagram illustrating a process of transmitting an application protocol data unit (APDU) between a host, a module-extension application module, and a plurality of application modules according to a method of extending an interface of a receiver.

10 is a view showing another embodiment of an interface extension method of a digital broadcast receiver according to the present invention.

An apparatus and method for expanding an interface of a digital broadcast receiver according to the present invention configured as described above will be described in detail with reference to the accompanying drawings.

First, as shown in FIGS. 2 and 3, a module-extension application module for using a plurality of application modules by extending an application module between the host 101 and the application module unit 103. ) 102 may be further configured so that the plurality of application module units 103 may use resources of the host 101 using DVB-CI.

The module-extension application module 102 is composed of a physical socket 102a for connecting with the host 101 and a physical socket portion 102b for connecting with a plurality of application modules 103. 102b is comprised from 1st-nth physical sockets 102b-1-102b-n.

The first to n th applications 102c-1 to 102 c-n in the module-extension application module 102 are the first to n th application modules 103a to 103 n of the application module unit 103. It is connected to the nth application through the first to nth physical sockets 102b-1 to 102b-n, and is connected to the physical socket 102a of the host 101 through the module extension application 102d.

A detailed operation of the module-extension application module 102 connected as described above will be described with reference to FIG. 4.

First, the address decode / control logic unit 101 in the module-extension application module 102 decodes an address signal transmitted through an address bus according to a control signal Control Signal1, and then the corresponding address and Output a control signal.

Then, the address / data bus controller 102 stores the data transmitted through the data bus in the memory 203 according to the address signal output from the address decode / control logic unit 101 through the address bus.

Subsequently, the controller 204 outputs a signal for controlling the memory 203 according to a control signal output from the address decode / control logic unit 101.

Then, the address / data bus controller 102 extracts and outputs the data stored in the memory 203 according to the control signal output from the controller 204.

In addition, the controller 204 outputs a signal for controlling communication between the host 101 and the communication and the external application module 103.

Then, the host bus adapter 205 transmits and receives the control signal and the MPEG TS to the external application module unit 103 according to the control signal (Control signal2) of the controller 204.

Here, the transport connection process of the interface extension method of the module-extension application module 102 will be described.

First, as shown in FIG. 5, the host 101 searches whether the module-extension application module 102 is inserted.

When the search result module-extension application module 102 is inserted, the host 101 performs a connection process with the module-extension application module 102 to transmit and receive data.

That is, when the module-extension application module is inserted, the host 101 transmits a request transport connection signal for requesting a transport connection.

The module-extension application module 102 then transmits a response transport reply signal indicating that a connection is possible according to the transmitted request transport connection signal.

Accordingly, data transmission and reception between the host 101 and the module-extension application module 102 is performed according to the transmitted response transport signal.

When the data transmission and reception is completed, the host 101 waits in a polling state until new data exists.

The module-extension application module 102 then detects whether an application module is inserted.

When the first application module is inserted as a result of the search, the module-extension application module 102 performs a connection process with the first application module and the host, and then transmits and receives data through a transport connection A.

That is, when the first application module is inserted, the module-extension application module 102 transmits a request transport connection signal (Request Transport Connection) for the transport connection to the inserted first application module.

The first application module then sends a response transport reply signal indicating that the connection is possible according to the transmitted request transport connection signal to the module-extension application module 102.

Then, the module-extension application module 102 transmits a request new transport connection signal (Request Transport Connection) for the new transport connection to the host 101 according to the transmitted response transport reply signal.

The host 101 then transmits a request transport connection signal (Request Transport Connection) for the new transport connection to the module-extension application module 102 according to the transmitted request new transport connection signal.

Accordingly, the module-extension application module 102 transmits a response transport reply signal indicating that a new transport connection is possible according to the transmitted request transport connection signal to the host 101.

In accordance with the transmitted response transport reply signal, data is transmitted and received through the module-extension application module 102 in the host 101 and the application module.

That is, a transport connection C between the host 101 and the module-extension application module 102 according to the transmitted response transport response signal, the module-extension application module 102 and the first application Modules transmit and receive Application Protocol Data Units (APDUs) through a transport connection B.

In the meantime, when the second application module is inserted, the module-extension application module 102 establishes a transport connection by repeating the above process, and then the transport connection between the host 101 and the module-extension application module 102 is performed. E (transport connection E), the module-extension application module 102 and the first application module is to transmit and receive an Application Protocol Data Unit (APDU) via a transport connection D (transport connection D) .

In addition, as shown in FIG. 6, when the module-extension application module 102 is inserted, the host 101 transmits a signal (Creat_T_C (A)) for transport connection from the host.

The module-extension application module 102 then transmits a signal C_T_C_Reply (A, no_data) indicating that a connection is possible according to the transmitted signal Creat_T_C (A).

Accordingly, data T_Data_Last (A, data) (T_SB (A, no_data)) is transmitted and received between the host 101 and the module-extension application module 102 according to the transmitted signal C_T_C_Reply (A, no_data). You lose.

When transmission and reception of the data T_Data_Last (A, data) (T_SB (A, no_data)) is completed, the host 101 waits for a polling state until new data exists (T_Data_Last (A, poll)). The module-extension application module 102 transmits a signal T_SB (A, no_data) corresponding to the transmitted signal T_Data_Last (A, poll) to the host 101.

The module-extension application module 102 then searches for the insertion of the application module.

When the first application module is inserted as a result of the search, the module-extension application module 102 transmits a signal Creat_T_C (B) for transport connection to the inserted first application module.

The first application module then transmits a signal C_T_C_Reply (B, no_data) to the module-extension application module 102 indicating that the connection is possible.

The module-extension application module 102 then transmits a response signal Req_T_C (A, no_data) for a new transport connection to the polling host 101 according to the transmitted signal C_T_C_Reply (B, no_data). do.

The host 101 then sends a signal (New_T_C (A, C)) that will request a new transport connection, and immediately sends a signal (Creat_T_C (C)) requesting a new transport connection to the module-extension application module 102. To send.

Accordingly, the module-extension application module 102 indicates that a new transport connection is possible according to the transmitted signal New_T_C (A, C) (T_SB (A, no_data)) and a signal that a transport connection has been generated ( C_T_C_Reply (C, no_data) is transmitted to the host 102.

The host 101 then transmits a signal T_Data_Last (C, poll) for checking whether there is data to be transmitted from the first application module according to the transmitted signal C_T_C_Reply (C, no_data). 102, and transmits a corresponding signal T_Data_Last (B, poll) to the first application module in the module-extension application module 102.

Accordingly, the first application module transmits a signal (T_SB (B, data avail)) indicating that there is data to transmit according to the transmitted signal T_Data_Last (B, poll) to the module-extension application module 102, and then extends the module-extension. The application module 102 transmits a signal T_SB (C, data avail) corresponding to the signal T_SB (B, data avail) corresponding to the host 101.

Then, the host 101 transmits a signal T_Rcv (C) to the module-extension application module 102 to transmit data according to the transmitted signal T_SB (B, data avail) and the module-extension application module ( 102 sends a corresponding signal T_Rcv (B) to the first application module.

Subsequently, the first application module transmits a signal (T_Data_Last (B, data, no_data)) for transmitting data according to the transmitted signal T_Rcv (B) to the module-extension application module 102 and the module-extension application module. 102 transmits a corresponding signal T_Data_Last (C, data, no_data) to the host.

The module-extension application module 102 repeats the above process when the second application module is inserted, establishes a transport connection, and then transmits and receives data.

Accordingly, the application module performs a session connection process for using the resource of the host 101 and then uses the resource of the host 101 in the application module through the module-extension application module 102. .

That is, after the transport connection is completed, the module-extension application module 102 hosts a signal for requesting to open a session to use a resource in the host 101 as shown in FIG. 7. In step 101, the host transmits a signal (Open Session Response (Sesion_Number = A)) corresponding to the requested session number information to the module-extension application module 102.

Then, when the session between the module-extension application module 102 and the host 101 is opened according to the transmitted signal (Open Session Response (Sesion_Number = A)), the module-extension application module 102 and the host 101 are separated. A session protocol data unit (SPDU) is transmitted and received.

After the transmission and reception of the session protocol data unit is completed, the module-extension application module 102 detects whether the application module is inserted.

If the first application module is inserted as a result of the search, the first application module receives a signal (Open Session Request) for opening a session through the module-extension application module 102 in order to use the resources of the host 101. 101).

The host 101 then allocates a new session number (B) to the module-extension application module 102 according to the transmitted signal (Open Session Request), and sends the module-extension application module 102 to it. Transmits a corresponding signal (Open Session Request (Session_Number = C)) to the first application module.

Accordingly, a session number B between the host 101 and the module-extension application module 102 according to the transmitted signal (Open Session Request (Session_Number = C)), the module-extension application module 102 ) And the first application module transmit and receive a Session Protocol Data Unit (SPDU) through session number C.

In addition, when the second module-extension application module is inserted, the above process is repeated to establish a session number D and a module-extension application module 102 between the host 101 and the module-extension application module 102. ) And the first application module transmit and receive a Session Protocol Data Unit (SPDU) through a session number E.

Meanwhile, FIG. 8 illustrates a connection state between layers of a host, a module-extension application module, and a plurality of application modules through the above process, and FIG. 9 shows a module-extension application module. (Application Protocol Data Unit (APDU)) between the (Module-Extension Application Module) and the layers of a plurality of application modules (Application Protocol Data Unit (APDU)) is a process of transmitting, when the APDU is transmitted from each layer to another layer in each layer Indicates to be added or removed and transmitted.

FIG. 10 illustrates the first to tenth module-expansion application modules into which the first to tenth application modules can be inserted into the plurality of physical sockets of the module-extension application module 102, respectively, up to 100. It indicates that my one physical socket can be an interface extension.

As described above, the apparatus and method for extending an interface of a digital broadcasting receiver according to the present invention further configure a module-extension application module between a host and an application module in a receiver having a limited number of physical sockets, thereby providing a limited number of external applications. This can be used by inserting a module.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims.

Claims (9)

In the interface extension device of the digital broadcast receiver to interface the host and a plurality of application modules using the DVB-CI (Digital Video Broadcast-Common Interface) standard, And a module-extension application module having a physical socket for connecting to the host and a plurality of physical sockets for extending the application module between the host and the plurality of application modules. Interface expansion device for a digital broadcast receiver, characterized in that the. The method of claim 1, The module-extension application module An address decode / control logic unit which decodes an address signal transmitted according to a control signal (Control Signal1) and outputs an address and a control signal corresponding thereto; An address / data bus controller which stores data transmitted according to the address signal output from the address decode / control logic unit in a memory and then retrieves the data stored in the memory according to a control signal; A control unit for outputting a signal for controlling the memory according to a control signal output from the address decode / control logic unit and controlling communication between a host and communication and external application modules; And a host bus adapter configured to transmit and receive a control signal and an MPEG TS to an external application module according to a control signal of the controller. The method of claim 1, Digital broadcast, characterized in that to extend the interface by inserting another module-extension application modules in the physical socket for the external application module of the module-extension application module (Module-Extention Application Module) Receiver interface extension. (a) detecting whether a module-extension application module is inserted in the host; (b) when the search result module-extension application module is inserted in step (a), performing a transphoto connection process with the module-extension application module to transmit and receive data; (c) detecting whether an application module is inserted in the module-extension application module; (d) when the search result application module is inserted in the step (c), performing a transphoto connection process between the application module and the host and transmitting and receiving data in the module-extension application module; (e) performing a session connection process for using the resource of the host in the application module and using the resource of the host in the application module through a module-extension application module. Interface expansion method of broadcast receiver. The method of claim 1, Step (a) is And repeating steps (d) and (e) when another application module is inserted into the module-extension application module. The method of claim 4, wherein Step (b) is Transmitting a request transport connection signal for a transport connection from a host when the module-extension application module is inserted; Transmitting, by a module-extension application module, a response transport reply signal indicating that a connection is possible according to the transmitted request transport connection signal; And transmitting / receiving data between a host and a module-extension application module according to the transmitted response transport signal. The method of claim 6, When the data transmission and reception is completed, the host further comprises the step of waiting in the polling state (Polling) until there is new data, characterized in that the interface extension method of the digital broadcast receiver. The method of claim 4, wherein Step (b) is Transmitting a signal (Creat_T_C (A)) for a transport connection from a host when the module-extension application module is inserted; Transmitting, by a module-extension application module, a signal (C_T_C_Reply (A, no_data)) indicating that a connection is possible according to the transmitted signal (Creat_T_C (A)); And transmitting and receiving data (T_Data_Last (A, data)) (T_SB (A, no_data)) between a host and a module-extension application module according to the transmitted signal C_T_C_Reply (A, no_data). Interface expansion method of digital broadcasting receiver. The method of claim 8, When transmission and reception of the data (T_Data_Last (A, data)) (T_SB (A, no_data)) are completed, a signal (T_Data_Last (A, poll)) for waiting in a polling state until new data exists in the host is transmitted. Making a step; And transmitting the signal T_SB (A, no_data) corresponding to the transmitted signal T_Data_Last (A, poll) from the module-extension application module to the host. Extension method.