KR100759161B1 - Control method of broadcasting receiver by heterogeneous apparatus - Google Patents

Abstract

The present invention relates to a method for controlling a broadcast receiver by a heterogeneous device, wherein the heterogeneous device uses a serial communication interface such as RS232C to control a broadcast receiver for receiving a digital multimedia broadcasting (DMB) broadcast according to a predetermined communication protocol. Can be. Through this, the heterogeneous device may transmit a predetermined control command to the broadcast receiver, and the broadcast receiver may transmit predetermined data in response to the control command received from the heterogeneous device.

DMB, DMB, RS232C, Heterogeneous Device, Broadcast Receiver

Description

Control method of broadcasting receiver by heterogeneous device {Control method of broadcasting receiver by heterogeneous apparatus}

1 is a conceptual diagram provided to explain a method for controlling a broadcast receiver by a heterogeneous device according to the present invention;

2 is a diagram illustrating a format of received data received by a broadcast receiver; and

3 is a diagram illustrating a format of transmission data transmitted by a broadcast receiver.

The present invention relates to a broadcast receiver control method by a heterogeneous device, and more particularly, to a broadcast receiver control method by a heterogeneous device using a serial port such as RS-232C.

Digital Multimedia Broadcasting (DMB) is a standard for mobile multimedia reception. The European Digital Audio Broadcasting (DAB) standard, which is the basis of this standard, is designed to digitize existing analog radio broadcasts while simultaneously transmitting and receiving various types of broadcasts. DMB broadcasting includes data broadcasting in addition to video and audio broadcasting.

Like other general terminals, the DMB terminal may be connected to an external device with various purposes, and one of the purposes includes overcoming limitations in battery power, size of the display device, and the like of the portable DMB terminal. For example, a user who is driving a vehicle may reduce the power used by the DM terminal by operating only a portion except for the display unit of the DM terminal, connect the DM terminal to an external navigator device, and watch the DM broadcast through the navigator device. Usually, the navigator device is not limited by the power source by using the automobile power source.

The RS232C interface is a serial communication interface standardized by the US Electronics Industries Association (EIA). The RS232C interface is precisely called the EIA-RS232C standard and defines electrical characteristics, mechanical characteristics, and function of an interface circuit. However, communication between data terminals using RS232C is generally possible with three cables for transmission data (SD), reception data (RD), and signal ground (SG). RS232C is widely used as a serial communication interface between devices because of its simplicity and simplicity.

An object of the present invention is to provide a method for controlling a broadcast receiver for receiving a digital multimedia broadcasting (DMB) broadcast by a heterogeneous device.

Furthermore, another object of the present invention is to provide a broadcast receiver control method by a heterogeneous device using a serial port such as RS-232C.

In order to achieve the above object, a method of controlling a broadcast receiver by a heterogeneous device according to the present invention includes: receiving, by a broadcast receiver, a remote control command for receiving a digital multimedia broadcasting (DMB) broadcast from a heterogeneous device; The receiver performs an operation corresponding to the control command.

Here, the heterogeneous device, the broadcast receiver preferably receives at least one of video data and audio data generated by receiving and decoding a predetermined DM broadcast channel.

The control command may be one of a change of a received DM broadcast channel, a request for transmission of a DM broadcast state, a request for scanning a DM broadcast channel, an ensemble of a received DM broadcast channel, or a request for transmitting a label of a service. .

According to another embodiment of the present invention, when the control command is a request for transmission of a DMb broadcast reception state or an ensemble of a receiving DMB broadcast channel or a label transmission request of a service, the heterogeneous device may generate a predetermined control result. The method may further include transmitting from.

Here, the control result, the first segment Tx [0] indicates the start of the control result, the second segment Tx [1] indicates the type of the control result, the third segment Tx [2] It is preferable that the length of the control result is shown, and the fourth segment Tx [3] is reserved, and the fifth segment Tx [4] includes at least five segments that are control results.

The DMB broadcast reception state may be divided into predetermined steps by comparing a bit error rate (BER) of the received DMB broadcast data with a predetermined reference value.

The broadcast receiver may receive the control command from the heterogeneous device connected through a serial communication interface.

The control command preferably includes at least two segments in which the first segment Rx [0] indicates the start of the control command and the second segment Rx [1] indicates the type of control command.

Hereinafter, the present invention will be described in detail with reference to the drawings.

1 is a conceptual diagram provided to explain a method for controlling a broadcast receiver by a heterogeneous device according to the present invention.

Referring to FIG. 1, a broadcast receiver 101 and a heterogeneous device 103 are connected through a serial port.

The broadcast receiver 101 may receive a digital multimedia broadcasting (DMB) broadcast.

The broadcast receiver 101 may perform serial communication with the heterogeneous device 103, receive various control commands of the heterogeneous device 103, and output predetermined data in response to the received control command. As a communication interface for serial communication, RS232C standardized by the Electronic Industries Association (EIA) in the United States is preferable, and will be described below with reference to the RS232C interface.

The broadcast receiver 101 is connected to the Rx terminal of the heterogeneous device 103 through the Tx terminal and outputs predetermined data. In addition, the broadcast receiver 101 is connected to the Tx terminal of the heterogeneous apparatus 103 through the Rx terminal to receive predetermined data. In addition, the connection between the broadcast receiver 101 and the heterogeneous device 103 may be achieved by connecting three lines together with a separate signal ground (SG) (not shown) when the serial communication interface is RS232C.

The heterogeneous device 103 may be another digital image processing device, and receives a video and audio signal output through an external output terminal (not shown) of the broadcast receiver 101 to display its own device (not shown) and a speaker. Can be output through (not shown).

In this case, the user may input a control command for controlling the broadcast receiver 101 to the heterogeneous device 103, and the heterogeneous device 103 may respond to the control command according to the control method of the present invention. 101 can be controlled.

Accordingly, the broadcast receiver 101 may receive various control commands by the control method of the present invention. Preferably, the user's control command regarding the remote operation of the broadcast receiver 101 through the heterogeneous device 103 may be controlled. desirable. In other words, the control command transmitted by the heterogeneous device 103 is a control command corresponding to a broadcast channel change operation received by the broadcast receiver 101, an operation of a confirmation button of the broadcast receiver 101, and the like, and eventually, the heterogeneous device 103. A control signal relating to a video signal or an audio signal which is output from the.

Hereinafter, a control method between the broadcast receiver 101 and the heterogeneous device 103 will be described. Since the broadcast receiver 101 will be described here, the term "receiver (Rx)" means that the broadcast receiver 101 receives data from the heterogeneous device 103, and "transmit (Tx)" means The broadcast receiver 101 transmits predetermined data to the heterogeneous device 103.

2 is a diagram illustrating a format of received data received by a broadcast receiver.

Referring to FIG. 2, the Rx command received by the broadcast receiver 101 from the heterogeneous device 103 includes 32 bits (4 bytes) in total, and is composed of four unit segments each having a size of 1 byte.

As described above, the command received by the broadcast receiver 101 relates to the remote operation of the broadcast receiver 101. Through this, the user manipulates the broadcast receiver 101 by operating the heterogeneous device 103 to change the channel, check the current broadcast reception state, or remotely operate the confirmation button of the broadcast receiver 101. You can either view the information or scan the channel.

The first segment, Rx [0], indicates the start of the Rx command and preferably has a value of 0xAA (10101010).

The second segment, Rx [1], represents the form of the instruction. Table 1 below shows the values of Rx [1] according to various commands.

Command Type DMB Command 0x01 Channel up 0x02 Channel down 0x03 Auto Channel Search 0x04 Enter 0x05 DMB State

In this case, when Rx [1] is 0x01, this is a channel up command, and is a command to change a currently received broadcast channel to a next channel having a higher frequency or service ID. The broadcast receiver 101 receiving the command changes the received channel.

Terrestrial DMB uses TV channel 12 (Seoul and neighboring regions) with VHF 6MHz bandwidth, and includes three ensemble of 1.5MHz bandwidth in 6MHz band.

Broadcasting stations that transmit terrestrial DMB broadcasting will provide DMB broadcasting through one ensemble, and the number of frequency bands or ensemble that terrestrial DMMB will use will increase. Each ensemble may include a plurality of services, and a channel targeted for channel change refers to a service included in an ensemble. Accordingly, the broadcast receiver 101 displays a broadcast according to another service according to a channel change command received from the heterogeneous device 103.

When Rx [1] is 0x02, it is a channel down command. In the opposite direction as when Rx [1] is 0x01, the currently received broadcast channel is changed to the next channel having a lower frequency or service ID. Or change to another service. Accordingly, the broadcast receiver 101 changes the channel currently viewed by the user.

In other words, the case where Rx [1] is 0x01 and 0x02 respectively corresponds to one of two key inputs for channel change on the broadcast receiver 101.

When Rx [1] is 0x03, this command is an Auto Channel Search command, which scans all received ensemble and services.

When Rx [1] is 0x04, the command corresponds to the operation of the enter button (not shown) on the broadcast receiver 101, and the broadcast receiver 101 corresponds to the operation of the confirmation button in the current state. Perform the action. If the broadcast receiver 101 is providing a specific service, channel information of the service is displayed. Accordingly, the video signal transmitted to the heterogeneous device 103 includes channel information of the corresponding service.

When Rx [1] is 0x05, this is a DMB State command, which is a command to transmit the current state of the broadcast receiver 101. Here, the DMB state means good or bad broadcast reception state. The good and bad of the broadcast reception state of the broadcast receiver 101 may be determined based on whether the BER (Bit Error Rate) value of the channel being received is greater than or equal to a predetermined value. If the BER value is more than a predetermined value, it is determined that the reception state is bad.

The third and fourth segments, Rx [2] and Rx [3], are reserved.

When the heterogeneous apparatus 103 transmits a predetermined control command to the broadcast receiver 101 in the data format shown in FIG. 2 to control the broadcast receiver 101, the broadcast receiver 101 performs an operation corresponding thereto. . However, the control result of the broadcast receiver 101 is not necessarily transmitted to the heterogeneous device 103 in response to the control of the heterogeneous device 103.

3 is a diagram illustrating a format of transmission data transmitted by a broadcast receiver.

Referring to FIG. 3, the Tx data transmitted from the broadcast receiver 101 to the heterogeneous device 103 is 96 bits (12 bytes) in total, and is composed of 12 unit segments each having a size of 1 byte.

The first segment, Tx [0], indicates the start of the Tx data and preferably has a value of 0x55 (01010101).

The second segment, Tx [1], indicates the format of data that the broadcast receiver 101 intends to transmit to the heterogeneous device 103. Table 2 below shows the values of Tx [1] corresponding to various types of data.

Data type Data 0x01 Ensemble Label 0x02 Service label 0x03 DMB State

Here, when Tx [1] is 0x01, this indicates that the data is an ensemble label. The ensemble label here is the label of the ensemble you are currently watching.

An ensemble means a DMB broadcast including a plurality of services and transmitted through one frequency band. For example, KBS, SBS, etc. correspond to ensemble labels.

When Tx [1] is 0x01, this indicates that data is a service label. The service label is a label of the service currently being viewed.

Ensemble labels or service labels are obtained by scanning the actual broadcast stream.

When Tx [1] is 0x01, it indicates that data transmitted by the broadcast receiver 101 indicates a DM state. Here, the DMB state refers to a state of a broadcast currently received by the broadcast receiver 101.

When the broadcast receiver 101 provides data having a format corresponding to Table 2 to the heterogeneous device 103 can be made by various cases, but the value of Rx [1] from the heterogeneous device 103 is 0x01, 0x02. This may be a response to the case of receiving a control command of 0x04 and 0x05.

The third segment, Tx [2], represents the length of data to be transmitted.

The fourth segment, Tx [3], is reserved.

In the above, the format of the received data and the format of the transmitted data between the broadcast receiver 101 and the heterogeneous apparatus 103 has been defined.

In the actual communication between the broadcast receiver 101 and the heterogeneous device 103, it is natural that data according to various protocols for various purposes, in addition to the data defined above, may be transmitted and received together with the transmission and reception of data in the formats shown in FIGS. 2 and 3. Do.

As described above, the user can remotely control the broadcast receiver 101 through the control method of the heterogeneous device of the present invention to change the channel, check the ensemble of the current channel, or check the service label. In addition, when the broadcast data is not well received by the heterogeneous device 103, the broadcast reception state of the broadcast receiver 101 may be checked.

While the above has been shown and described with respect to preferred embodiments of the invention, the invention is not limited to the specific embodiments described above, it is usually in the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or prospect of the present invention.

The invention can be implemented in methods, devices and systems. In addition, when the present invention is implemented in computer software, the components of the present invention may be replaced with code segments necessary for performing necessary operations. The program or code segment may be stored on a medium that can be processed by a microprocessor and transmitted as computer data coupled with carrier waves via a transmission medium or communication network.

Media that can be processed by a microprocessor include those capable of transmitting and storing information such as electronic circuits, semiconductor memory devices, ROMs, flash memories, EEPROMs, floppy disks, optical disks, hard disks, optical fibers, wireless networks, and the like. Include. Computer data also includes data that can be transmitted over electrical network channels, optical fibers, electromagnetic fields, wireless networks, and the like.

As described above, according to the present invention, data communication through a serial communication method is possible between a broadcast receiver receiving a digital multimedia broadcasting (DMB) broadcast and a heterogeneous device.

Accordingly, the heterogeneous device may transmit a predetermined control command including a channel change, channel search, and transmission of status information of the current broadcast receiver to the broadcast receiver, and the broadcast receiver is predetermined in response to the control command received from the heterogeneous device. Can transmit data.

The present invention may be utilized when a broadcast receiver receives and decodes predetermined DM broadcast channel data and displays the same to a user while outputting a video signal and an audio signal of the corresponding DM broadcast channel to an external heterogeneous device through a separate terminal. Can be. That is, the user can remotely control the broadcast receiver through the control method of the heterogeneous device of the present invention to change the channel, check the ensemble of the current channel, or check the service label. Furthermore, when the broadcast data is not well received by the heterogeneous device, the broadcast reception state of the broadcast receiver may be checked.

In addition, by using an ordinary RS232C interface, it is possible to simply connect and perform predetermined data communication.

Claims (8)

delete delete delete Receiving, by a broadcast receiver, a remote control command for receiving a digital multimedia broadcasting (DMB) broadcast from a heterogeneous device; And And performing, by the broadcast receiver, an operation corresponding to the control command. The control command may be one of a change of a received DM broadcast channel, a transmission request of a DM broadcast reception state, a scan request of a DM broadcast channel, an ensemble of a received DM broadcast channel, or a label transmission request of a service. And transmitting, by the broadcast receiver, a predetermined control result to the heterogeneous device when the control command is a request for transmission of a DM broadcast reception state or an ensemble of a receiving DM broadcast channel or a label transmission request for a service. , The control result indicates that the first segment Tx [0] indicates the start of the control result, the second segment Tx [1] indicates the type of the control result, and the third segment Tx [2] indicates the control. And a fourth segment, Tx [3], is preliminary, and the fifth segment, Tx [4], includes at least five segments that are control results. Receiving, by a broadcast receiver, a remote control command for receiving a digital multimedia broadcasting (DMB) broadcast from a heterogeneous device; And And performing, by the broadcast receiver, an operation corresponding to the control command. The control command may be one of a change of a received DM broadcast channel, a transmission request of a DM broadcast reception state, a scan request of a DM broadcast channel, an ensemble of a received DM broadcast channel, or a label transmission request of a service. The DM broadcast reception state is divided into predetermined steps by comparing a bit error rate (BER) of the received MB broadcast data with a predetermined reference value. The method according to claim 4 or 5, And the broadcast receiver receives the control command from the heterogeneous device connected through a serial communication interface. Receiving, by a broadcast receiver, a remote control command for receiving a digital multimedia broadcasting (DMB) broadcast from a heterogeneous device; And And performing, by the broadcast receiver, an operation corresponding to the control command. The control command is a heterogeneous device, characterized in that the first segment Rx [0] indicates the start of the control command and the second segment Rx [1] includes at least two segments indicating the type of control command. Broadcast receiver control method by the. The method according to any one of claims 4, 5 or 7, The heterogeneous device is a broadcast receiver control method according to a heterogeneous device, characterized in that the broadcast receiver receives at least one of the video data and audio data generated by receiving and decoding a predetermined DM broadcast channel.

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