KR101379767B1 - Method for providing coordinate information and video apparatus thereof - Google Patents

Abstract

Provided is a method of providing coordinate information to an external device and an image device using the same. The present method for providing coordinate information includes receiving coordinate information input by a user from an input device; And transmitting a coordinate information transfer message including coordinate information input through the input device to an external device connected according to the HDMI High Definition Multimedia Interfacd Consumer Electronics Control (CEC) standard. . As a result, the image device can control the external device by transmitting coordinate information to the external device.

HDMI, CEC, Mouse, Coordinate Information

Description

Method for providing coordinate information and an image apparatus applying the same

The present invention relates to a method for providing coordinate information, and to an image device using the same, and more particularly, to a method for providing coordinate information to an external device connected to an image device and an image device using the same.

1 is a diagram illustrating a video system connected according to the HDMI High Definition Multimedia Interface Consumer Electronics Control (CEC) standard. The video system shown in FIG. 1 is constructed by connecting a TV 10 and a PC 20 according to the HDMI CEC standard. In addition to the video signal, the control signal according to the HDMI CEC standard is also transmitted and received between the TV 10 and the PC 20.

Accordingly, the TV 10 may transmit a user command transmitted through the remote controller 15 to the PC 20. That is, the user can control the operation of the PC 20 using only the remote controller 15 of the TV 10.

However, in order for the user to control the PC 20 by using the remote controller 15 of the TV 10, the up, down, left, and right arrow keys must be used. In addition, even if the remote controller 15 having a function of pointing the coordinates on the screen, a message for transmitting the coordinate information is not defined in the HDMI CEC standard.

As described above, in order to control the external device using the remote controller 15 of the TV 10, the user has to use the direction keys of the remote controller 15. In addition, even if the user has a remote controller 15 having a pointing function, the user cannot use it and has to use a direction button.

Moreover, in the reality that the types of external devices are diversified and the services provided are also diversified, it is necessary to provide a pointing function through the remote controller 15 for the convenience of the user. Accordingly, a search for a scheme for allowing a user to more conveniently control an external device with a remote control of a TV is required.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a method for providing coordinate information to a connected external device, and an image device to which the same is applied.

Another object of the present invention is to provide a method of obtaining coordinate information from a connected external device and an image device to which the same is applied.

According to an aspect of the present invention, there is provided a method of providing coordinate information, the method comprising: receiving coordinate information input by a user from an input device; And transmitting a coordinate information transfer message including coordinate information input through the input device to an external device connected according to the HDMI High Definition Multimedia Interfacd Consumer Electronics Control (CEC) standard. .

The coordinate information transfer message may include a command code indicating a transfer command of the coordinate information, horizontal coordinate information, and vertical coordinate information.

The method may further include receiving a coordinate information available message from the external device, wherein the coordinate information available message is a message indicating whether the coordinate information may be used by the external device.

The coordinate information available message may include information on whether the coordinate information available command code and coordinate information are available.

The coordinate information providing method may further include transmitting an event message, which is a message indicating that an event has occurred in the input device when an event occurs in the input device by a user, to the external device. desirable.

The event may include a button press event, a button press release event, a wheel scroll up event, and a wheel scroll down event.

The button press event message preferably includes a button press command code and button type information.

The button press release event message preferably includes a button press release command code and button type information.

On the other hand, the imaging device according to the present invention, the control unit for generating a coordinate information transfer message for transmitting the coordinate information input through the input device to the connected external device according to the HDMI High Definition Multimedia Interfacd Consumer Electronics Control (CEC) standard; And an interface for transmitting the coordinate information transfer message to the external device.

The coordinate information transfer message may include a command code indicating a transfer command of the coordinate information, horizontal coordinate information, and vertical coordinate information.

The interface preferably receives a coordinate information available message, which is a message indicating whether the coordinate information can be used, from the external device.

The coordinate information available message may include information on whether the coordinate information available command code and coordinate information are available.

The controller, when an event occurs in the input device by a user, generates an event message that is a message indicating that an event has occurred in the input device, and the interface generates the event message in the external device. It is desirable to send to.

The event preferably includes a button press event, a button press release event, a wheel scroll up event, and a wheel scroll down event.

The button press event message preferably includes a button press command code and button type information.

The button press release event message preferably includes a button press release command code and button type information.

On the other hand, the method for providing coordinate information according to the present invention comprises the steps of: receiving a coordinate information transmission message containing the coordinate information input from the input device from an external device connected according to the HDMI High Definition Multimedia Interfacd Consumer Electronics Control (CEC) standard; Moving the pointer to coordinates corresponding to the coordinate information included in the received coordinate information transmission message; .

The coordinate information transfer message may include a command code indicating a transfer command of the coordinate information, horizontal coordinate information, and vertical coordinate information.

On the other hand, the video device according to the present invention, the interface for receiving a coordinate information transmission message containing the coordinate information input from the input device from an external device connected according to the HDMI High Definition Multimedia Interfacd Consumer Electronics Control (CEC) standard; And a controller configured to control a pointer to move to a coordinate corresponding to the coordinate information included in the received coordinate information transfer message.

The coordinate information transfer message may include a command code indicating a transfer command of the coordinate information, horizontal coordinate information, and vertical coordinate information.

On the other hand, the coordinate information providing method according to the present invention, when an event occurs in the input device by the user, generating an event message which is a message indicating that the event occurred in the input device; And transmitting the event message to an external device connected according to the HDMI High Definition Multimedia Interfacd Consumer Electronics Control (CEC) standard.

On the other hand, the video device according to the present invention, when an event occurs in the input device by the user, a control unit for generating an event message which is a message indicating that the event occurred in the input device; And an interface for transmitting the event message to an external device connected according to the HDMI High Definition Multimedia Interfacd Consumer Electronics Control (CEC) standard.

As described above, according to the present invention, it is possible to provide a method for providing coordinate information to a connected external device and an image device applying the same, thereby allowing a user to more conveniently control the external device with a remote control of a TV.

In particular, it is possible to provide coordinate information to an external device connected to the TV by using the remote control of the TV, the user can use the TV remote control for the same purpose as the mouse of the PC.

In addition, the coordinate information transfer message, the coordinate information available message, and the event message, which are not defined in the HDMI CEC standard, can be defined, so that the external device can be controlled by using various input devices.

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

2 is a block diagram of an example of an imaging system to which the present invention is applicable. As shown in FIG. 2, the video system is constructed by connecting a TV 100 and a personal computer (PC) 200 according to the HDMI High Definition Multimedia Interfacd Consumer Electronics Control (CEC) standard.

As shown in FIG. 2, the TV 100 includes a TV function block 110, a TV HDMI interface 120, and a TV controller 130, and receives a user command through the remote controller 150.

The TV function block 110 performs a TV native function. Specifically, the TV function block 110 provides a broadcast screen to a user by performing signal processing such as decoding and scaling on a broadcast signal received from a broadcasting station by wire or wirelessly and displaying the same on a display. In addition, the TV function block 110 may display an image corresponding to an image signal transmitted from the PC 200 through the TV HDMI interface 120 to be described later on the display.

The TV HDMI interface 120 is connected to the PC 200 according to the HDMI CEC standard to enable transmission and reception of a message having a video signal and a mutual control function between the TV 100 and the PC 200.

The TV HDMI interface 120 transmits a coordinate information transfer message including coordinate information input through the remote controller 150 from the TV 100 to the PC 200. The TV HDMI interface 120 transmits an event message, which is a message indicating that an event has occurred in the remote controller 150, to the PC 200. In addition, the TV HDMI interface 120 receives a coordinate information message, which is a message about whether coordinate information is available from the PC 200.

The TV controller 130 controls the operation of the TV function block 110 according to a user command transmitted through the remote controller 150 or the like. In addition, the TV controller 130 may control the operation of the PC 200 by transmitting a control command to the PC 200 through the TV HDMI interface 120.

In addition, the TV controller 130 generates a coordinate information transfer message for transferring coordinate information input through the remote controller 150 to the connected PC 200. And the coordinate information transfer message includes a command code indicating the transfer command, horizontal coordinate information and vertical coordinate information. In addition, the TV controller 130 may generate a coordinate information transfer message after receiving the coordinate information available message, which is a message on whether the PC 200 can use the coordinate information, from the PC 200.

In addition, when an event occurs in the remote controller 150, the TV controller 130 generates an event message that is a message indicating that the event has occurred. The event may be a button press event, a button press release event, a wheel scroll up event, a wheel scroll down event, a drag event, or the like.

For example, when a user presses a button on the remote controller 150, the TV controller 130 generates a button press event message. Thereafter, when the user releases the button pressed on the remote controller 150, the TV controller 130 generates a button release event message. The button press event message and the button press release event message may include command code and button type information.

The remote controller 150 receives a command for controlling the TV 100 from the user and transmits the command to the TV 100. In addition, the remote controller 150 may receive a command for controlling an external device connected through the HDMI CEC.

In addition, the remote controller 150 has a pointing function for selecting a specific point on the screen of the TV 100. For example, since a touch pad is mounted on the remote controller 150, when a point of the touch pad is touched, the pointer may be moved to the corresponding point. Through this, the remote controller 150 may function as the mouse 250 of the PC 200.

As illustrated in FIG. 2, the PC 200 includes a PC function block 210, a PC HDMI interface 220, a PC controller 230, and a mouse 250.

The PC function block 210 performs the inherent functions of the PC 200. Specifically, the PC function block 210 records the broadcast signal input from the TV 100 through the PC HDMI interface 220 to be described later in the mounted storage device, or reads the video signal recorded in the mounted storage device. It may be provided to the TV 100 via the PC HDMI interface 220.

In addition, the PC function block 210 moves the pointer to the coordinates contained in the coordinate information transfer message based on the coordinate information transfer message input from the TV 100. The PC function block 210 generates an image signal of the moved pointer and transmits the image signal to the TV 100.

When the PC function block 210 receives an event message from the TV 100, the PC function block 210 performs an event corresponding function. For example, when receiving a button press event message, the PC function block 210 may perform a function of selecting an icon where a pointer is located. In addition, when the button press release event message is received, the PC function block 210 may perform a function of releasing the selection of the icon where the pointer is located.

The PC HDMI interface 220 is connected to the TV 100 according to the HDMI CEC standard to enable transmission and reception of video signals and messages between the TV 100 and the PC 200.

The PC controller 230 controls the operation of the PC function block 210 according to the control command of the TV controller 130 transmitted through the PC HDMI interface 220.

In addition, the PC controller 230 generates a coordinate information available message that is a message on whether the coordinate information can be used. The coordinate information available message includes information on coordinate information available command code and coordinate information availability. In general, since the PC 200 includes the mouse 250, coordinate information may be used. Therefore, the PC controller 230 generates a coordinate information available message including information indicating that the coordinate information can be used. For example, the PC controller 230 may generate a coordinate information available message of <Use Mouse> [Enable]. Where <Use Mouse> is the command code and [Enable] is the parameter value.

The PC controller 230 controls the PC function block 210 according to the coordinate information transfer message and the event message received from the TV 100.

Hereinafter, a process of providing coordinate information to the external device by the TV 100 will be described in detail with reference to FIG. 3. 3 is a flowchart provided to explain a method of providing coordinate information centering on the TV 100 according to an embodiment of the present invention.

As shown in FIG. 3, the TV 100 determines whether a coordinate information available message is received from the PC 200 (S300). If the coordinate information available message is received (S300-Y), it is determined whether the user inputs the coordinate information to the remote controller 150 (S305). For example, when a user touches a touch pad (not shown) provided in the remote controller 150, the user inputs coordinate information corresponding to the position of the touch pad.

If the user inputs the coordinate information to the remote controller 150 (S305-Y), the TV control unit 130 generates a coordinate information transfer message (S310). The coordinate information transfer message includes coordinate information transfer command code, horizontal coordinate information, and vertical coordinate information. For example, assume that the coordinate information transfer message has a form of <Move Mouse Position> ([horizontal position], [vertical position]). Here, <Move Mouse Position> is a coordinate information transfer command code, and [horizontal movement] and [vertical movement] are parameter values corresponding to horizontal coordinate information and vertical coordinate information. If the user inputs coordinate information of (100,200) through the remote controller 150, the coordinate information transfer message will be generated to have a form of <Move Mouse Position> (100,200).

In addition, the horizontal coordinate information and the vertical coordinate information may be implemented to indicate a position change value with respect to the position of the current pointer. For example, if the current pointer position is (100,200) and the coordinate information transfer message is <Move Mouse Position> (10,20), the pointer position is moved to (110,220). In this case, the coordinate information transfer message may be defined in the form of <Move Mouse Position> ([horizontal movement], [vertical movement]).

Next, the TV controller 130 transmits the generated coordinate information transfer message to the PC 200 through the TV HDMI interface 120 (S320). In addition, the PC controller 230 moves the pointer to the coordinates corresponding to the received coordinate information transfer message (S330). Thereafter, the PC controller 230 generates an image signal for the moved pointer and transmits the image signal to the TV 100.

Thereafter, the TV controller 130 controls the TV function block 110 to receive and display the image signal of the moved pointer (S340). If the user inputs coordinate information of (100,200) through the remote controller 150, the TV 100 receives and displays an image signal in which a pointer (for example, an arrow shape) is located at the coordinates of (100,200) from the PC 200. Done.

On the other hand, when the user does not input the coordinate information (S350-N), the TV control unit 130 determines whether the user pressed the button of the remote controller 150 (S350). If the user presses a button of the remote controller 150 (S350-Y), it determines the type of the button once pressed (S360). For example, it is determined which button of the left function button, the right function button of the remote control 150. Here, the left function button of the remote control 150 corresponds to a button that functions as a left button of the mouse 250 connected to the PC 200, the right function button of the remote control 150 is a mouse ( Corresponds to the button functioning as the right button of 250).

The TV controller 130 generates a button press event message and transmits the generated button press event message to the PC 200 (S370). The button press event message includes a button press command code and button type information. For example, assume that the button press event message has a form of <Mouse Button Pressed> ([Button Type]). Here, <Mouse Button Pressed> is a button press command code and [Button Type] is a parameter value corresponding to button type information. Therefore, when the user presses the left function button of the remote controller 150, the button press event message may be in the form of <Mouse Button Pressed> (Left Button).

Thereafter, the TV controller 130 determines whether the user releases the button of the remote controller 150 (S380). If the user releases the button (S380-Y), the TV controller 130 determines the type of the released button (S385).

The TV control unit 130 generates a button press release event message and transmits the generated message to the PC 200 (S390). The button release event message includes a button release command code and button type information. For example, it is assumed that a button press event message has a form of <Mouse Button Released> ([Button Type]). Here, <Mouse Button Released> is a button release command code and [Button Type] is a parameter value corresponding to button type information. Therefore, if the user releases the left function button of the remote controller 150, the button press release event message may be in the form of <Mouse Button Released> (Left Button).

Up to now, the process of providing coordinate information to the external device by the TV 100 has been described with reference to FIG. 3.

Hereinafter, a process of acquiring coordinate information from the external device by the PC 200 will be described with reference to FIG. 4. 4 is a flowchart provided to explain a method of providing coordinate information centering on the PC 200 according to an embodiment of the present invention.

The PC controller 230 generates a coordinate information available message and transmits it to the TV 200 (S400). The coordinate information available message includes coordinate information available command code and button type information. For example, the PC controller 230 may generate a coordinate information available message of <Use Mouse> [Enable]. Where <Use Mouse> is the command code and [Enable] is the parameter value.

Thereafter, the PC controller 230 determines whether a coordinate information transfer message is received from the TV 100 (S405). If the coordinate information transfer message is received (S405-Y), the PC controller 230 moves the pointer to the coordinates corresponding to the coordinate information transfer message (S410). The PC controller 230 generates image information on the moved pointer and transmits the image information to the TV 100 (S420).

On the other hand, if the coordinate information transfer message has not been received (S405-N), the PC controller 230 determines whether a button press event message is received from the TV 100 (S430).

If the button press event message is received (S430-Y), the type of the pressed button is determined (S440). The type of the pressed button can be confirmed by referring to the parameter value of the received button press event message. Thereafter, the PC controller 230 controls the PC function block 210 to perform a function corresponding to a button press event (S450). For example, when the user presses the left function button of the remote controller 150, the PC controller 230 controls the PC function block 210 to perform the same function as pressing the left button of the mouse 250 of the PC 200. Can be controlled.

Thereafter, the PC controller 230 determines whether a button release event message is received from the TV 100 (S460). If the button press release event message is received (S460-Y), the PC controller S470 determines the type of the button released (S470). The type of button released can be checked by referring to the parameter value of the button release event message.

Next, the PC controller 230 controls the PC function block 210 to perform a function corresponding to a button press release event. For example, when the user releases the left function button of the remote controller 150, the PC control unit 230 performs the same function as releasing the left button of the mouse 250 of the PC 200. 210 can be controlled.

So far, the process of providing coordinate information between an external device connected to an image device has been described in detail with reference to FIGS. 3 and 4.

Hereinafter, the structure of the message exchanged between the video device and the connected external device will be described in detail with reference to FIGS. 5 to 9.

5 is a diagram illustrating a message structure corresponding to the HDMI CEC standard according to an embodiment of the present invention. As shown in FIG. 5, the message corresponding to the HDMI CEC standard includes a start bit, a header block, a first data block, and a second data block.

The start bit is a bit indicating the beginning of the message. In general, it is most efficient to configure the start bit with 1 bit. However, it does not necessarily need to be 1 bit and may be composed of a plurality of bits.

The header block contains a source address and a destination address. The source address represents the address of the device sending the message, and the destination address represents the address of the device that will receive the message. In general, the source address and the destination address take the form of logical addresses.

In addition, the header block further includes an end of message (EOM) bit (not shown) and an acknowledgment (ACK) bit (not shown). The EOM bit is a bit indicating whether the end of the message. For example, if the EOM bit is '0', it is not the end of the message. If it is '1', it is the end of the message. If the message includes the EOM bit, the end of the message is known, and thus a message having a variable length can be implemented.

The ACK bit is a bit indicating whether the message is well delivered to the device of the destination address. For example, when a message is first generated, the ACK bit is set to '1'. If a message is delivered to a device that does not correspond to the destination address, the device responds with the ACK bit left at '1'. On the other hand, when the message is delivered to the device corresponding to the destination address, the device responds by modifying the ACK bit to '0'. The source device checks whether the message is well delivered by checking whether the ACK bit of the response message is '0' or '1'.

In general, the source and destination addresses are 4 bits each and the EOM and ACK bits are 1 bit each. Therefore, the header block has a total size of 10 bits.

The first data block includes an OPCODE. OPCODE means the code value of the command corresponding to the role of the message. That is, the code value of the command code is stored. For example, the <Active Source> command, which transfers the address of the currently active source, has an OPCODE value of 0x82.

OPCODE is a code value with a size of 8 bits. The first data block also has an EOM bit and an ACK bit. Therefore, the first data block also has a total size of 10 bits.

The second data block includes an OPERAND. OPERAND contains the parameter value of the command corresponding to OPCODE. Thus, the value of OPERAND depends on what the OPCODE is. For example, the <Active Source> command is followed by a parameter value of [Physical Address]. Therefore, OPERAND includes [Physical Address] information.

OPERAND consists of a plurality of data blocks. Each block includes 8 bits of data, an EOM bit, and an ACK bit, so each block has a size of 10 bits. In the HDMI CEC standard, OPERAND can have up to 14 data blocks. That is, the second data block may have a maximum of 14 data blocks, and the maximum size is 140 bits (= 14 * 10 bits).

As confirmed above, the message consists of a header block, a first data block, and a second data block, and the total size may be up to 160 bits (= 16 * 10 bits).

6 is a diagram illustrating a structure of a coordinate information transfer message according to an embodiment of the present invention. As shown in FIG. 6, the coordinate information transfer message includes a start bit, a header block, a first data block, and a second data block.

The header block contains the source address and the destination address. In this embodiment, since the TV 100 transmits the coordinate information transfer message to the PC 200, the source address contains the logical address value of the TV 100, and the destination address contains the logical address value of the PC 200. do.

The first data block includes a coordinate information transfer command code and is stored as <OPCODE>. For example, the coordinate information transfer command code may be defined by giving a name of <Move Mouse Position>.

The second data block includes horizontal coordinate information and vertical coordinate information. In this case, <Move Mouse Position> may have [horizontal position] and [vertical position] as parameters. That is, the horizontal coordinate value and the vertical coordinate value can be used as parameters. For example, if the coordinate information transfer message is <Move Mouse Position> (100,200), the pointer is moved to be located at (100,200).

Also, the horizontal coordinate change value and the vertical coordinate change value may be implemented as parameters. In this case, <Move Mouse Position> may have [horizontal movement] and [vertical movement] as parameters. For example, if the current position of the pointer is (100,200) and the coordinate information transfer message is <Move Mouse Position> (10,20), the pointer is moved to be located at (110,220).

7 is a diagram illustrating a structure of a coordinate information available message according to an embodiment of the present invention. As shown in FIG. 7, the coordinate information transfer message includes a start bit, a header block, a first data block, and a second data block.

The header block contains the source address and the destination address. In this embodiment, since the PC 200 transmits the coordinate information available message to the TV 100, the source address contains the logical address value of the PC 200, and the destination address contains the logical address value of the TV 100. It is recorded.

The first data block includes the coordinate information usable command code and is stored as <OPCODE>. For example, the coordinate information transfer command code in the PC 200 may be defined by giving a name of <Use Mouse>.

The second data block includes information on whether the coordinate information is available. In this case, <Use Mouse> can be set to [Enable] or [Disable] as a parameter. That is, it can be used or not used as a parameter. For example, if the coordinate information available message is <Use Mouse> (Enable), it indicates that the PC 200 can use the coordinate information because the mouse can use the mouse.

8 illustrates a structure of a button press event message according to an embodiment of the present invention. As shown in FIG. 8, the button press event message includes a start bit, a header block, a first data block, and a second data block.

The header block contains the source address and the destination address. In this embodiment, since the TV 100 transmits the button press event message to the PC 200, the source address contains the logical address value of the TV 100, and the destination address contains the logical address value of the PC 200. do.

The first data block includes a button press command code and is stored as <OPCODE>. For example, the button press command code may be defined by being named <Mouse Button Pressed>.

The second data block includes button type information. In this case, <Mouse Button Pressed> may use any of [Left button], [Right button], and [Center button] as parameters. That is, the type of the pressed button can be used as a parameter. For example, when the button press event message is <Mouse Button Pressed> (Left button), it corresponds to a case where the user presses a left function button of the remote controller 150.

9 is a diagram illustrating the structure of a button release event message according to an embodiment of the present invention. As shown in FIG. 9, the button press release event message includes a start bit, a header block, a first data block, and a second data block.

The header block contains the source address and the destination address. In this embodiment, since the TV 100 transmits a button release event message to the PC 200, the source address contains the logical address value of the TV 100, and the destination address contains the logical address value of the PC 200. It is recorded.

The first data block includes a button release command code and is stored as <OPCODE>. For example, a button press command code can be defined by giving a name of <Mouse Button Released>.

The second data block includes button type information. In this case, the <Mouse Button Released> parameter may be any one of [Left button], [Right button], and [Center button]. That is, the type of the released button can be set as a parameter. For example, when the button press release event message is <Mouse Button Pressed> (Left button), it corresponds to a case where the user releases the left function button of the remote controller 150.

So far, the structure of the message has been described in detail with reference to FIGS. 5 to 9.

In this embodiment, the message structure is implemented based on the structure defined in the HDMI CEC standard. However, this is merely an example for convenience of description and can be implemented based on a structure defined in another standard. In addition, it may be implemented based on a structure arbitrarily defined by the manufacturer.

Thus, the structure of the message and the size of the message may be implemented differently in this embodiment.

In the present embodiment, the image system has been described as being constructed with the TV 100 and the PC 200, but the technical concept of the present invention can be applied to the image system constructed with these and other image devices. In addition to TVs and DVDRs, it is a video equipment that can build a video system. Blue-lay disk (BD) players, BD recorders, video cassette recorders (VCRs), home theater systems, personal multimedia players (PMPs), digital cameras, and digital camcorders.

In addition, in the present embodiment, it is assumed that the video devices constructing the video system are connected according to the HDMI CEC standard, but this is also merely an example for convenience of description. Therefore, the present invention may be applied to any method as long as it can transmit and receive video signals and messages between video devices in addition to the HDMI CEC standard.

Hereinafter, other embodiments of the present invention will be described in detail with reference to FIGS. 10 to 15.

10 is a block diagram of an imaging apparatus according to another embodiment of the present invention. As illustrated in FIG. 10, the controller 1010 generates a coordinate information transfer message for transferring coordinate information input through an input device to a connected external device according to the HDMI High Definition Multimedia Interfacd Consumer Electronics Control (CEC) standard. . The interface 1020 transmits a coordinate information transfer message to an external device.

11 is a flowchart provided to explain a method for providing coordinate information according to another embodiment of the present invention. As illustrated in FIG. 11, the image apparatus receives coordinate information input by a user from an input device (S1110). The video apparatus transmits a coordinate information transfer message including coordinate information input through the input device to an external device connected according to the HDMI High Definition Multimedia Interfacd Consumer Electronics Control (CEC) standard (S1120).

12 is a block diagram of a video device according to another embodiment of the present invention. As illustrated in FIG. 12, the interface 1210 receives a coordinate information transfer message including coordinate information input from an input device from an external device connected according to the HDMI High Definition Multimedia Interfacd Consumer Electronics Control (CEC) standard. The controller 1220 controls the pointer to move to a coordinate corresponding to the coordinate information included in the received coordinate information transfer message.

13 is a flowchart provided to explain a method for providing coordinate information according to another embodiment of the present invention. As illustrated in FIG. 13, the video apparatus receives a coordinate information transfer message including coordinate information input from the input apparatus from an external device connected according to the HDMI High Definition Multimedia Interfacd Consumer Electronics Control (CEC) standard (S1310). In operation S1320, the image apparatus moves the pointer to coordinates corresponding to the coordinate information included in the received coordinate information transfer message.

14 is a block diagram of a video device according to another embodiment of the present invention. As illustrated in FIG. 14, when an event occurs in an input device by a user, the controller 1410 generates an event message that is a message indicating that an event has occurred in the input device. The interface 1420 transmits an event message to a connected external device according to the HDMI High Definition Multimedia Interfacd Consumer Electronics Control (CEC) standard.

15 is a flowchart provided to explain a method for providing coordinate information according to another embodiment of the present invention. As illustrated in FIG. 15, when an event occurs in the input apparatus by the user, the video apparatus generates an event message that is a message indicating that an event has occurred in the input apparatus (S1510). The video apparatus transmits the event message to the connected external apparatus according to the HDMI High Definition Multimedia Interfacd Consumer Electronics Control (CEC) standard (S1520).

As a result, the imaging apparatus may provide coordinate information to the connected external apparatus.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present invention.

1 is a view showing a video system connected according to the HDMI CEC standard,

2 is a block diagram of an example of an imaging system to which the present invention is applicable;

3 is a flowchart provided to explain a method for providing coordinate information centering on a TV according to an embodiment of the present invention;

4 is a flowchart provided to explain a method of providing coordinate information centering on a PC according to an embodiment of the present invention;

5 is a diagram illustrating a message structure corresponding to the HDMI CEC standard according to an embodiment of the present invention;

6 is a diagram illustrating a structure of a coordinate information transfer message according to an embodiment of the present invention;

7 is a diagram illustrating a structure of a coordinate information available message according to an embodiment of the present invention;

8 is a diagram showing the structure of a button press event message according to an embodiment of the present invention;

9 is a view showing the structure of a button release event message according to an embodiment of the present invention;

10 is a block diagram of an imaging apparatus according to another embodiment of the present invention;

11 is a flowchart provided to explain a method for providing coordinate information according to another embodiment of the present invention;

12 is a block diagram of an imaging apparatus according to another embodiment of the present invention;

13 is a flowchart provided to explain a method for providing coordinate information according to another embodiment of the present invention.

14 is a block diagram of an imaging apparatus according to another embodiment of the present invention;

15 is a flowchart provided to explain a method for providing coordinate information according to another embodiment of the present invention.

Description of the Related Art [0002]

100: TV 120: TV HDMI interface

130: TV control unit 200: PC

220: PC HDMI interface 230: PC controller

Claims (23)

Receiving coordinate information input by a user from an input device; Transmitting a coordinate information transfer message including coordinate information input through the input device to an external device connected according to the HDMI High Definition Multimedia Interfacd Consumer Electronics Control (CEC) standard; Receiving from the external device an image signal of moving the pointer to coordinates corresponding to the coordinate information contained in the coordinate information transmission message; And And displaying the video signal with respect to the moved pointer. The method according to claim 1, The coordinate information transfer message, And a command code indicating a transfer command of the coordinate information, horizontal coordinate information, and vertical coordinate information. The method according to claim 1, And receiving, from the external device, a coordinate information available message that is a message indicating whether the coordinate information is available to the external device. The method of claim 3, The coordinate information available message is, And coordinate information available command code and information on whether or not to use coordinate information. The method according to claim 1, When an event occurs in the input device by one of a plurality of buttons included in the input device being pressed or released by a user, the external device performs an operation corresponding to the event. And transmitting an event message, which is a message indicating that an event has occurred in an input device, to the external device. 6. The method of claim 5, The event, The method of providing coordinate information of an image apparatus comprising a button press event, a button press release event, a wheel scroll up event, and a wheel scroll down event. The method according to claim 6, The message of the button press event, Method of providing coordinate information of a video device comprising a button press command code and button type information. The method according to claim 6, The message of the button release event, Method of providing coordinate information of a video device comprising a button press release command code and button type information. A controller configured to generate a coordinate information transfer message for transferring coordinate information input through an input device to an external device connected according to the HDMI High Definition Multimedia Interfacd Consumer Electronics Control (CEC) standard; And And an interface for transmitting the coordinate information transfer message to the external device. Wherein, When the video signal moving the pointer to the coordinates corresponding to the coordinate information recorded in the coordinate information transmission message is received from the external device through the interface, the video device for the moved pointer is displayed. . 10. The method of claim 9, The coordinate information transfer message, And a command code indicating a transfer command of the coordinate information, horizontal coordinate information, and vertical coordinate information. 10. The method of claim 9, The interface comprises: And a coordinate information available message, which is a message indicating whether the coordinate information can be used, from the external device. 12. The method of claim 11, The coordinate information available message is, And the coordinate information available command code and information on whether coordinate information is available. 10. The method of claim 9, Wherein, When an event occurs in the input device by one of a plurality of buttons included in the input device being pressed or released by a user, the external device performs an operation corresponding to the event. And generating an event message which is a message indicating that an event has occurred in the input device. The interface comprises: And the event message is transmitted to the external device. 14. The method of claim 13, The event, And a button press event, a button press release event, a wheel scroll up event, and a wheel scroll down event. 15. The method of claim 14, The message of the button press event, And a button press command code and button type information. 15. The method of claim 14, The message of the button release event, And a button press release command code and button type information. Receiving a coordinate information transfer message including coordinate information input by an input device from a video device connected according to the HDMI High Definition Multimedia Interfacd Consumer Electronics Control (CEC) standard; Moving a pointer to coordinates corresponding to the coordinate information included in the received coordinate information transmission message; Generating an image signal for the moved pointer; And And transmitting the generated video signal to the video device. 18. The method of claim 17, The coordinate information transfer message, And coordinate information, horizontal coordinate information, and vertical coordinate information indicating a transfer command of the coordinate information. An interface for receiving a coordinate information transfer message including coordinate information input from an input device from a video device connected according to the HDMI High Definition Multimedia Interfacd Consumer Electronics Control (CEC) standard; And And a controller configured to control a pointer to move to a coordinate corresponding to the coordinate information included in the received coordinate information transmission message. Wherein, And generating a video signal for the moved pointer and transmitting the generated video signal to the video device. 20. The method of claim 19, The coordinate information transfer message, And an instruction code indicating a transfer command of the coordinate information, horizontal coordinate information, and vertical coordinate information. When an event occurs in the input device by one of a plurality of buttons provided on the input device by a user being pressed or released, the event message is a message indicating that the event has occurred in the input device. Generating; And And transmitting the event message to the external device connected according to the HDMI High Definition Multimedia Interfacd Consumer Electronics Control (CEC) standard so that the external device performs an operation corresponding to the event. When an event occurs in the input device by one of a plurality of buttons provided on the input device by a user being pressed or released, the event message is a message indicating that the event has occurred in the input device. A control unit for generating; And And an interface for transmitting the event message to the external device connected according to the HDMI High Definition Multimedia Interfacd Consumer Electronics Control (CEC) standard so that an external device performs an operation corresponding to the event. The method according to claim 1, The coordinate information transfer message has a message structure corresponding to the HDMI CEC standard. A start bit indicating the beginning of the message; A header block including a source address indicating an address of a device transmitting the coordinate information transmitting message and a destination address indicating an address of a device receiving the coordinate information transmitting message; A first data block including a command code indicating a transfer command of the coordinate information; And And a second data block including horizontal coordinate information and vertical coordinate information.

Images