KR20060116450A - Methode for controlling complex device in device link system based television - Google Patents

Abstract

A method for controlling complex devices in a device link system based on a TV is provided to more efficiently and conveniently operate and control a specific device by connecting various types of devices to a digital TV by a daisy chain type and operating a remote controller of the digital TV. A master device of a device link system based on a TV generates a request message to discover respective slave devices, and transmits the generated request message. The respective slave devices receive the request message, generate a response message, and transmit the generated response message to the master device. A physical ID and a logical ID indicating all of the slave devices are recorded in a destination address of the request message. When the corresponding slave device is a complex device, an intrinsic physical ID and a meaningless logical ID are recorded in a source address of the response message.

Description

Method for controlling complex device in device link system based television

1 shows an overall configuration of a device link system according to the present invention,

2 illustrates a stereo jack applied to a device link system according to the present invention,

Figure 3 illustrates an embodiment of a television remote control applied to the device link system according to the present invention.

4 illustrates an embodiment of an interface structure of a slave device to which the present invention is applied;

FIG. 5 illustrates an embodiment in which a master device and a slave device to which the present invention is applied transmit and receive a command through a daisy chain method.

6 illustrates a configuration of a request message format according to the present invention;

7 illustrates a configuration of a response message format according to the present invention;

8 illustrates an embodiment in which a request message and a response message are transmitted / received according to the present invention.

9 illustrates an embodiment in which a request message is retransmitted according to the present invention;

10 illustrates a configuration of a request message generated to discover each slave device according to the present invention,

11 illustrates a configuration of a response message generated in a slave device as a composite product according to the present invention.

12 and 13 illustrate a configuration of a response message generated in a slave device which is a single product according to the present invention.

FIG. 14 illustrates a configuration of a request message generated to control operation of a slave device as a composite product according to the present invention.

?? Explanation of symbols for main parts of the drawings

10: digital television 11: set-top box

12: V13 13: DVD recorder

14: receiver 110: jack connector

111: line driver 112: microcomputer

The present invention relates to a method for controlling a complex product in a device link system based on a television. For example, various types of A / V devices installed in a home can be connected based on a digital television. In addition, the present invention relates to a method for controlling a complex product in a device link system based on a television for enabling a user to more conveniently control the desired A / V device.

In recent years, digital televisions (D-TVs) capable of outputting and displaying high-definition video and high-quality audio have been widely used and commercialized. For example, digital TVs (VCRs) and DVD recorders (DVDs) are available. -Recorder, and Set Top Box (STB) can be connected.

Meanwhile, the DVD recorder or set-top box may include a hard disk recorder (HDD-Recorder) capable of recording and storing digital data in a large recording medium such as a hard disk (HDD).

In addition, a receiver capable of three-dimensionally outputting high-quality multi-channel (eg, 5.1 CH) audio through a plurality of speakers may be connected to the digital television. The receiver may be connected to a VCD or a DVD. Combi-Home Theater, a combination product that includes a recorder, can be used.

Then, the user selectively controls the devices connected to the digital television to watch analog audio and video played in the VR or digital audio and video played in the DVD recorder, or the set top. Audio and video of the digital broadcast received through the box can be viewed.

In addition, a user may control the combination home theater so that high-quality multi-channel audio is three-dimensionally output through a plurality of speakers, and a video screen displayed through the digital television and a plurality of speakers are output. Multi-channel audio can be heard in three dimensions.

However, in order to control the operation of the V-Cal, DVD recorder, set-top box, and combination home theater connected through a digital television as described above, the user has to operate the remote control of the device, which is inconvenient in use. Of course, the problem that takes a long time to control the operation of the desired device occurs.

Accordingly, the present invention has been created to solve the above problems, for example, various types of devices such as V-Cal, DVD recorder, set-top box, and receiver installed in the home, such as stereo jack (Stereo Jack) By using a daisy chain method to connect and connect to a digital television, the remote control of the digital television can be operated to more efficiently and conveniently control a specific device in a complex device desired by a user. It is an object of the present invention to provide a method for controlling a complex product in a television-based device link system.

In the composite product control method in a television-based device link system according to the present invention for achieving the above object, a request message for discovering each slave device in the master device of the television-based device link system; Generate and transmit a message, and generate a response message from each slave device that receives the request message, and transmit the response message to the master device, and the destination address of the request message includes a physical ID and a logical ID representing the entire slave device. When the corresponding slave device is a composite product, a unique physical ID and a meaningless logical ID are recorded in the source address of the response message.

In addition, when the corresponding slave device is a composite product, at least two or more valid logical IDs are recorded in the data block of the response message, and in the master device, the logical ID recorded in the source address of the response message is meaningless. If so, the data block of the response message is searched, and a valid logical ID is searched.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a method for controlling a complex product in a device link system based on a television according to the present invention will be described in detail.

FIG. 1 shows an overall configuration of a device link system based on a television according to the present invention. For example, a set top box 11, a BC12, Various types of devices, such as the DVD recorder 13, the receiver 14, and the like, are connected to the digital television 10 through an A / V signal line, respectively.

In addition, as shown in FIG. 1, the devices are serially connected and connected to the digital television 10 through a daisy chain type control line. For example, in addition to a plurality of signal input / output ports for transmitting and receiving A / V signals with each device, the digital television 10 includes one stereo jack port for a control line with the set-top box 11. Stereo Jack Port) is provided separately.

Meanwhile, the set top box 11 is provided with two stereo jack ports for a control line with the digital television 10 and a control line with a V-CAL 12. Two stereo jack ports are provided for the control line with the set top box 11 and the control line with the DVD recorder 13.

In addition, the DVD recorder 13 includes two stereo jack ports for a control line with the VRC 12 and a control line with the receiver 14 such as a Combi-Home Theater. The receiver 14 is provided with two stereo jack ports for a control line with the DVD recorder 13 and a control line (unassigned) with any other device.

On the other hand, the stereo jack, for example, as shown in Figure 2, 3.5mm stereo jack mainly used in general personal computer (PC) or earphone, etc. can be used, as described above in a daisy chain method through the stereo jack In addition to a plurality of key buttons for selecting and controlling a television function, the remote controller for operating and controlling a digital television connected to each device operates each device connected in a daisy chain manner. Key buttons for control are additionally assigned.

For example, assuming that the device link system according to the present invention is an 'XLink' system, the remote control includes a key button for turning on / off the TV and the XLink devices, as shown in FIG. Key buttons for providing a graphical user interface (GUI) screen and key buttons for selectively outputting audio output through a TV or a home theater are additionally allocated.

In the set-top box 11 connected to a device connected in a daisy chain manner through a stereo jack, for example, a digital television, which is a master device, and operated as a slave device, as shown in FIG. As shown, the jack connector 110, the line driver 111, and the microcomputer 112 is configured to include.

On the other hand, the request command received from the digital television 10 via the jack connector 110 of the set top box, via the R1_In / Out terminal of the line driver 111, to the microcomputer 112. At the same time as the input, it is transmitted through the T2_In / Out terminal of the line driver 111 to the VRC 12 connected to the other stereo jack input / output port of the jack connector 110.

On the other hand, when a response command is generated by the microcomputer 112 of the set top box, the response command is input / output of the jack connector 110 via the T1_In / Out terminal of the line driver 111. When a response command is generated from the V12 or the like, the response command is transmitted via the R2_In / Out terminal and T1_In / Out of the line driver 111. And the digital television 10 connected to the input / output port of the jack connector 110.

In addition, in the digital television 10, for example, when performing a system booting operation, as shown in FIG. 5, a request command (for example, DiscoverDevices) for confirming connection of each slave device is generated. The request command is serially transmitted to the respective devices through a series of daisy chain methods described above with reference to FIG.

Each device receiving the request command generates a corresponding response command (eg, Slave1Res (), Slave2Res () ...), and the response command is digitally daisy-chained. Since it is transmitted to a television, in the digital television, each device currently linked can be identified, and a request message format transmitted / received between the digital television operated as the master device and the respective devices operated as the slave device. (Request Message Format) and Response Message Format are explained in detail as follows.

Fig. 6 shows a configuration of a request message format according to the present invention. For example, a request message transmitted from a digital television which is a master device includes a header type and a destination address. A destination address, a source address, a length, a command, and N data blocks 1 to N and checksum information are sequentially recorded.

7 illustrates a configuration of a response message format according to the present invention. For example, a header is included in a response message transmitted from a slave device, a DB recorder, a set-top box, a reserver, and the like. Type (Header Type), Destination Address, Source Address, Length, Command, Response Code, and N Data Blocks (Data Block 1 ~ N) And checksum information are recorded in order.

Meanwhile, when transmitting the request message or the response message, as shown in FIGS. 6 and 7, '0xFF 0xFF' is first transmitted. When a message collision occurs, the slave devices detect the fact. Also, it is used to recover data in which a message transmission error occurs in a digital television which is a master device.

And. The header information indicates a start of a message. In the case of a request message, for example, 5 bits of '10001' for indicating a corresponding message type and 3 bits for indicating a corresponding version. '001' is recorded, and in the case of a response message, a 5-bit '10010' for indicating a corresponding message type and a 3-bit '001' for indicating a corresponding version may be recorded.

In addition, an 8-bit physical ID and a logical ID assigned to the corresponding device to receive the message are recorded in the destination address, and the source address is assigned to the corresponding device transmitting the message. 8-bit physical ID and logical ID are recorded. The physical ID is assigned a unique value for each product type, and the logical ID is included in the corresponding product. Each unit is assigned a unique value.

For example, when the DVD recorder is a combination device including a hard disk recorder (HDD-Recorder) inside the device, the combined product is assigned one physical ID and two logical IDs. If the request message and the response message correspond to each other, the destination address and the source address are exchanged with each other, but the request message and the corresponding response as the 'DiscoverDevices' command described above with reference to FIG. Since the messages correspond to 1: N, the destination address and the source address do not change exceptionally.

And, the length information indicates the number of bytes corresponding to the total message length from the header information to the checksum, and the command is a specific command to be transmitted, and the data block corresponds to when additional information is to be transmitted. Information is recorded in a data block and transmitted. Depending on the type of the command, the existence and length of the data block are determined as optional.

On the other hand, in general, information is divided into units of 1 byte, but the data block is classified by a detailed format rather than 1 byte. When an unused lower bit occurs among data blocks, it is filled with '0' and transmitted. In addition, the response code is included only in the response message, the success or failure of the request message (OK, Error) is recorded, the check sum is used to detect the message error, except for the check sum A specific value that XORs all message data is recorded.

The message transmission method between the master device and the slave devices uses, for example, an RS232C transmission method. The start bit uses '1' and the stop bit uses '0'. The baud rate is 9600bps, and no parity, and a half duplex method is used for communication.

In addition, the LSB First transmission method that first transmits a Least Significant Bit (LSB) is used. As shown in FIG. 8, a slave device receiving a request message transmits a response message within 50 ms, and has a maximum response delay. The time should be less than 200 ms, and as shown in FIG. 9, the master device retransmits when the waiting time for the response exceeds 200 ms after transmitting the request message, wherein the retransmission is repeated one or more times. Done.

In the master device, if a response message is received after transmitting the request message, the master device waits 10 ms or more until the next request message is transmitted, and the internal byte interval of the message is maintained within 5 ms. When the master device receives the standby response RES_WAIT instead of the ok response RES_OK as a response message, the master device informs that the processing speed of the slave device is slow and that the current processing is in progress.

On the other hand, if the master device wants to know the exact completion time, the same request message can be repeatedly transmitted later according to the processing criteria, and finally the slave device responds with an OK response (RES_OK), and a standby response (RES_WAIT). The master device, for example, displays a user interface message similar to 'during XLink communication', so that the user can know the processing delay.

In the master device, if only the standby response WAIT_RES is continuously received for 1 s without the ok response RES_OK, the slave device treats the error as an error of the slave device and stops the communication, even after retransmitting the request message. If not, it determines that there is no device, and outputs the corresponding guide screen for the user to know.

On the other hand, as shown in Figure 10, in the master device, the destination address (Dest.Addr) of the request message (Dest.Addr) generated to discover each of the slave devices (DiscoverDevice), the physical indicating the entire slave device ID (eg Physical_ALL) and Logical ID (eg Logical_ALL) are recorded.

In addition, in a slave device that receives the request message, for example, a slave device which is a complex device including a VCR, a DVD-player, and a receiver, In response to the corresponding response message (Response Message) is generated, as shown in FIG. 11, the source address (Src.Addr) of the response message has a unique physical ID (eg, assigned to the corresponding composite product). Physical_XXX) and meaningless logical IDs (e.g. Logical_NULL) are logged.

That is, since the logical ID field of the source address is limited to the size of 8 bits, as described above with reference to FIG. 6, it is not possible to record all the logical IDs assigned to each of the internal units, and thus, shown in FIG. 11. As described above, in the data block of the response message, a logical ID assigned to a VCR (eg Logical_AAA), a logical ID assigned to a DVD-Player (eg Logical_BBB), and a receiver Logical ID (Logical_CCC) assigned to) is recorded.

Meanwhile, when the slave device receiving the request message is a single device, as shown in FIG. 12, a unique physical ID (eg, Physical_XXX) assigned to the product in the source address of the response message. And a logical ID (eg Logical_AAA) may be recorded respectively.

In addition, as shown in FIG. 13, a unique physical ID (eg, Physical_XXX) and a meaningless ID (eg, Logical_NULL) assigned to a corresponding product are recorded in the source address of the response message, respectively. ), A valid logical ID (eg, Logical_AAA) may be recorded.

The master device receiving the response message searches for a valid logical ID recorded in the data block of the response message when a valid physical ID and a meaningless logical ID are recorded in the source address of the response message. For example, if two or more logical IDs are recorded in the data block, it is determined that the slave device is a composite product.

On the other hand, if one logical ID is recorded in the data block or if a valid logical ID is recorded in the source address, it is determined that the slave device is a single product. For example, in the master device, a user In the case of selecting and controlling any one structural unit (eg, VCR) included in the composite product according to the request of the user, as shown in FIG. The physical ID (eg, Physical_XXX) assigned to the composite product and the logical ID (eg, Logical_AAA) assigned to a specific device (eg, VCR) included in the composite product are recorded and transmitted.

Accordingly, in the composite product receiving the request message, the specific device configured inside the composite product is operated by referring to the physical ID and the logical ID recorded in the destination address, so that the user may enter the desired composite product. It is possible to conveniently control the operation of the specific device provided.

Or more, preferred embodiments of the present invention described above, for the purpose of illustration, those skilled in the art, within the technical spirit and the technical scope of the present invention disclosed in the appended claims below, to further improve various other embodiments Changes, substitutions or additions will be possible.

The composite product control method in the television-based device link system according to the present invention constructed and constructed as described above may be, for example, various types of devices such as V-Cal, DVD recorders, set-top boxes, and receivers installed in homes. Request and response messages transmitted and received between the digital television and devices that are complex devices, in addition to a digital chain connection using a stereo jack in a daisy chain manner. By generating, recording, and transmitting physical ID and logical ID in an optimized predetermined format, a user can digitally transmit and receive a message between a digital television and a composite device. By operating the remote control of the television, It is a very useful invention to be able to more conveniently control the operation of a specific device provided in the desired composite product.

Claims (8)

In a master device of a television based device link system, generate and transmit a request message for discovering respective slave devices, In each slave device receiving the request message, a response message is generated and transmitted to the master device, In the destination address of the request message, a physical ID and a logical ID representing the entire slave device are recorded. And a unique physical ID and a meaningless logical ID are recorded in the source address of the response message when the slave device is a complex product. The method of claim 1, And at least two or more logical IDs are recorded in the data block of the response message when the corresponding slave device is a composite product. The method of claim 1, When the slave device transmitting the response message is a single product, a unique physical ID and a meaningless logical ID are recorded in the source address, and a valid logical ID is recorded in the data block of the response message. Complex product control method based on device link system. The method of claim 1, If the slave device transmitting the response message is a single product, a unique physical ID and a logical ID are recorded in the source address of the response message. The method of claim 1, In the master device, if the logical ID recorded in the source address of the response message has a meaningless value, the device based on the television, characterized in that to search for a valid logical ID by searching the data block of the response message. How to control complex products in your system. The method of claim 5, The physical ID is one unique identification value assigned to a product, and the logical ID is one or more unique identification values assigned to a constituent unit inside the product. Product control method. The method of claim 6, In the master device, the physical ID assigned to the composite product and the logical ID assigned to any one of the internal structural units of the composite product are recorded in the destination address of the request message and transmitted according to a user selection. A composite product control method in a device link system based on a television, characterized in that for. The method of claim 7, wherein In the slave device of the composite product, a device link system based on a television, characterized in that only one of the internal structural units is operated by checking a physical ID and a logical ID respectively recorded in the destination address of the request message. Control of composite products in

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