JP2009027599A - Display device and av system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform operation equal to the case using a consumer electronics control (CEC) message also upon external equipment that is corresponding to the HDMI standard but is not corresponding to CEC. <P>SOLUTION: In a television set 100, while a physical connection of an HDMI cable 135 is being detected by a connection detecting section 138, a predetermined CEC message is transmitted to external equipment connected by the HDMI cable and in accordance with presence/absence of a reply thereof, it is discriminated whether the connected external equipment is corresponding to CEC messages or not. In a case where the external equipment is equipment that is not corresponding to CEC, an operation signal based on operation of a remote controller 121 or the like is converted into an operation signal for operating the external equipment, and transmitted to the external equipment by a video mouse connected to a video mouse connector 137. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a display device and, more particularly, to a display device that can be connected to an external device through a digital interface based on HDMI (High Definition Multimedia Interface).

  HDMI is well known as a digital interface for video / audio transmission. For example, in a display device such as a liquid crystal television, attention is focused on a function of linking with an external device using a command based on a device control signal CEC (Consumer Electronics Control) defined by HDMI. The CEC message is a device control signal standardized by HDMI, and an external device such as a recorder connected to a display device such as a liquid crystal television by HDMI can be operated from the display device side by using the CEC message.

  With respect to the prior art that enables such a connected external device to be operated from a display device, for example, Patent Document 1 discloses that each AV device has its own graphic display data in an AV system configured by connecting a plurality of AV devices. A configuration is disclosed in which graphic display data is transmitted to a controller in response to a request from an AV device (controller) that is stored by itself and has a graphic display function. In the controller, the AV equipment can be operated intensively by operating the displayed graphic display data. Here, AV devices are connected by a digital interface based on the IEEE 1394 standard or the like, and each AV device periodically gives an equal communication opportunity with other AV devices in a bidirectional packet communication system without switching connection.

Non-Patent Document 1 discloses CEC in the HDMI standard. In HDMI, Ver. 1.2a defines CEC relating to control of AV equipment for the first time. Before Ver. In (Version), control by CEC is not defined.
JP-A-9-149325. "High-Definition Multimedia Interface Specification Version 1.2a Supplement 1 Consumer Electronics Control (CEC)"

As described above, the CEC message used for device control in the HDMI standard is not defined in the initial standard of HDMI, and there are devices that do not support the CEC message even if the device supports HDMI. ing.
Such a device can output a video / audio stream via an HDMI cable, but cannot operate according to a CEC message transmitted from a display device such as a liquid crystal television. In other words, when such a device is compatible with HDMI but not CEC, and connected to a display device such as a liquid crystal television that supports CEC, the display device is operated to transmit a CEC message to the device. Even so, I could not operate the equipment.

  For example, consider a case where a liquid crystal television that supports HDMI and CEC and a recorder that supports HDMI and does not support CEC are connected to each other via an HDMI cable. In this case, the liquid crystal television cannot control the recorder using the CEC message. Here, since the recorder does not support CEC, for example, even if the recorder connected by the HDMI cable is turned on, the CEC message <Active Source> that should be transmitted if CEC is supported is not transmitted from the recorder. An LCD TV cannot recognize the recorder. At this time, for example, even if the user operates the “one-touch recording” button on the remote control attached to the liquid crystal television to cause the recorder to perform recording, it is not possible to start recording because the recorder is not compatible with CEC. Can not. In this case, the user cannot specify why the recorder does not record.

In other words, in the case of a device that is equipped with an older version of the HDMI standard and does not support CEC, there is a problem that a link function using a CEC message cannot be realized with a display device that supports CEC.
In addition, as such a device, there is a device that does not correspond to all CEC messages defined as a standard in HDMI but operates by using a lot of so-called vendor commands. Even in such a case, if the command corresponding to the specific CEC is not supported, the same problem as described above occurs, and the cooperation function with the display device cannot be sufficiently exhibited.

  With regard to such a problem, the technique disclosed in Patent Document 1 is based on the premise that a device that conforms to each interface is used, and thus is used when it does not conform to the above-described standard version. Can not. In addition, troubles occur when using both non-conforming and conforming standards. Further, in the above Non-Patent Document 1, there is no provision for troubleshooting measures such as mixed use of non-conforming equipment.

  The present invention has been made in view of the above-described circumstances, and an operation equivalent to that when a CEC message is used can be applied to an external device that does not support CEC despite being compatible with the HDMI standard. It is an object of the present invention to provide a display device that can perform the above.

  In order to solve the above-mentioned problem, a first technical means of the present invention is a display device having an HDMI input terminal for connecting an HDMI cable conforming to the HDMI standard. The display device is connected to the HDMI input terminal with the HDMI cable. HDMI cable connection detection means for detecting whether or not the HDMI cable is physically connected. When the HDMI cable connection detection means detects the physical connection of the HDMI cable to the HDMI input terminal, the HDMI cable connection detection means is connected to the HDMI input terminal. A device that transmits a predetermined CEC message to the CEC line of the HDMI cable, determines whether or not there is a reply to the transmitted CEC message, and an external device connected by the HDMI cable corresponds to the CEC message according to the determination result Device discriminating means for discriminating whether Operation signal transmitting means for transmitting an operation signal for operating the external device to the external device by means different from the CEC message when the means determines that the external device is a device not compatible with CEC. It is characterized by having.

  According to a second technical means, in the first technical means, the operation signal transmitting means transmits an operation signal for operating an external device by a transmitting means connected to a display device.

  According to a third technical means, in the first technical means, the display device includes an operation input means for accepting an input operation by a user, and a first operation signal output from the operation input means in response to an input operation by the operation input means. Is converted into a second operation signal for operating the external device, and the operation signal transmitting means is determined by the device determining means that the external device is a device not compatible with CEC. In this case, the second operation signal is transmitted to the external device by means different from the CEC message as the operation signal for operating the external device.

  According to a fourth technical means, in the third technical means, the display device associates a control code included in the first operation signal and a control code for controlling the external device for each type of the external device. The operation signal converting means controls the external device based on the control code included in the first operation signal with reference to the table when converting the first operation signal. And a first operation signal is converted into a second operation signal using the extracted control code.

  According to a fifth technical means, in the third technical means, the display device outputs a CEC message generated according to the control code included in the first operation signal, and a control code for controlling the external device, to the external device. The operation signal conversion means refers to the table when converting the first operation signal and generates it according to the control code included in the first operation signal. Based on the CEC message to be performed, a control code for controlling the external device is extracted, and the input operation signal is converted into a second operation signal using the extracted control code. .

  According to a sixth technical means, in the third technical means, the display device displays a registration screen for registering the type of the external device when the external device is determined to be non-CEC compatible by the device determining means. Display means, and external device type storage means for storing the type of external device registered using the registration screen, the operation signal conversion means according to the type of external device stored in the external device type storage means, The first operation signal is converted.

  According to a seventh technical means, in the first technical means, the CEC message transmitted from the display device to the CEC line is a <give physical address> defined by HDMI and determines whether or not there is a reply from an external device The command to be performed is <report physical address> defined by HDMI.

  According to the present invention, there is provided a display device capable of performing an operation equivalent to that using a CEC message even for an external device that does not support CEC despite being compatible with the HDMI standard. Can be provided.

  According to the present invention, when it is determined that an external device that does not support CEC is connected to the HDMI input terminal, the operation input unit is operated when an operation input is performed on the operation input unit such as a remote controller. The operation signal output from the device is converted into an operation signal for operating an external device and transmitted by means different from the CEC message, for example, by a transmission means such as a video mouse, thereby supporting HDMI and not supporting CEC messages. The same operation control as when using the CEC message can be performed on the external device.

  Further, according to the present invention, for example, even when the HDMI standard is upgraded and the HDMI / CEC is changed, the control code by the operation input means such as a remote control and the control code for controlling the external device By newly storing the correspondence relationship, it becomes possible to execute control of the external device corresponding to the new standard.

  Furthermore, according to the present invention, even in an environment in which an external device that conforms to an old HDMI standard that does not support CEC and an external device that conforms to a new standard that supports CEC are used in combination, the device conforms to the old HDMI standard. It is possible to effectively use assets of external devices.

  In the embodiment according to the display device of the present invention, when an HDMI compatible and non-CEC compatible external device is connected to the display device using an HDMI connection cable, an operation signal for operating the external device is a CEC message. By transmitting by different means, even if the external device is not compatible with CEC, the same operation is executed by the same operation as the CEC compatible device.

  Here, the display device includes HDMI cable connection detection means for detecting whether or not the HDMI cable is physically connected to the HDMI input terminal. As the HDMI cable connection detection means, for example, a photo interrupter provided near the HDMI input terminal of the display device can be applied, and is the HDMI cable physically connected to the HDMI input terminal of the display device? It is possible to detect whether or not.

  Further, the display device has device determination means for determining whether or not the external device connected by the HDMI cable is a device compatible with the CEC message when a physical connection of the HDMI cable to the HDMI input terminal is detected. Have. In this case, the device determination unit transmits a predetermined CEC message to the CEC line of the HDMI cable connected to the HDMI input terminal, determines whether there is a reply to the CEC message, and determines whether there is a reply. The external device determines whether or not the external device supports the CEC message.

  In other words, here, when the HDMI cable connection detection means detects that the HDMI cable is physically connected to the display device, it is considered that some HDMI compatible external device is connected to the display device. be able to. At this time, a predetermined CEC message is transmitted from the display device to the external device via the CEC line of the HDMI cable.

If there is no reply from the external device, it is determined that the external device is a device that does not support CEC. At this time, the display device transmits an operation signal for operating the external device to the external device by means different from the CEC message. Here, an operation signal for controlling an external device is transmitted when an operation input is made to an operation input means such as a remote controller or a main body key provided in the display device. For example, an operation signal transmitted from a remote controller is converted into an operation signal for controlling the external device, and the external device is controlled by transmitting the operation signal to the external device using a video mouse connected to the display device.
Here, the operation signal transmitted (output) from the operation input means such as a remote controller corresponds to the first operation signal of the present invention, and the operation signal transmitted to the external device for operating the external device is the present invention. This corresponds to the second operation signal. The second operation signal is obtained by converting the first operation signal.

  In the display device, a control code included in an operation signal from a remote controller or the like and a control code for controlling an external device are stored as a table in association with each type of external device. Then, when converting the operation signal, the control code for controlling the external device is extracted based on the control code included in the operation signal from the remote controller or the like by referring to the table. Then, the operation signal from the remote controller or the like is converted into an operation signal using the extracted control code and transmitted.

  In the above table, the CEC message generated according to the control code included in the operation signal from the remote controller or the like and the control code for controlling the external device are stored in association with each type of the external device. Also good. In this case, when converting the operation signal, the control code for controlling the external device is extracted based on the CEC message to be generated according to the control code included in the operation signal from the remote controller or the like by referring to the above table. To do. Then, the operation signal from the remote controller or the like is converted into an operation signal using the extracted control code and transmitted.

  The type of the external device that does not support CEC is registered by a user operation on the device selection screen displayed in advance on the display device. At this time, for example, the manufacturer name of the device and the device type (device category) can be used as the type of the external device.

  Thereafter, when the user operates an operation input means such as a remote controller, the display device determines whether or not the control code transmitted by the operation is a control code for controlling the external device. If it is a control code for controlling an external device, the table is referred to according to the type of the currently registered external device, and a control code that can control the registered external device according to the control code input from a remote control or the like. Extract. Then, an operation signal based on the extracted control code is transmitted to an external device using a video mouse or the like. By performing such an operation, the user can cause the external device to perform the same operation with the same operation without being aware of CEC compatibility or non-correspondence only by presetting the CEC non-compliant device. become able to.

Embodiments of a display device according to the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram for explaining an embodiment of a display device according to the present invention, and shows a configuration example of a television device which is an embodiment of the display device.
In the television apparatus 100, the tuner unit 101 performs channel selection processing for a channel designated by the user from broadcast signals received from the antenna AT. The TV signal processing unit 102 processes the TV signal selected by the tuner unit 101, and outputs a video signal and an audio signal to the synthesis processing unit 103. The composition processing unit 103 receives an image signal from the data broadcast processing unit 107 and the browser processing unit 109 and an OSD signal from the OSD signal generation unit 112 on the video screen based on the video signal from the TV signal processing unit 102. These are combined and output to the output processing unit 104.

  The output processing unit 104 performs correction processing such as contrast, luminance, and saturation on the video signal from the synthesis processing unit 103 based on various setting parameters, and outputs the video signal to the display unit 106. Adjustment and amplification are performed and output to the audio output unit 105 such as a speaker. When a channel that performs data broadcasting is selected, the data broadcast processing unit 107 extracts metadata in the broadcast program and outputs content data to the composition processing unit 103.

  The Internet reception processing unit 108 accesses a home page that provides a content distribution service with the Internet reception mode selected by a user operation, and outputs the content data to the browser processing unit 109. The browser processing unit 109 converts the content data from the Internet reception processing unit 108 into a format that can be displayed on the display unit 106 and outputs the converted data to the composition processing unit 103.

  The control unit 113 includes a CPU 114, a ROM 115 that stores various processing programs, a RAM 116 as a work memory, a nonvolatile memory 117 that stores data for various settings, and the like, and switches the channel of the tuner unit 101. First, the TV signal processing unit 102, the synthesis processing unit 103, the output processing unit 104, the data broadcast processing unit 107, the Internet reception processing unit 108, the browser processing unit 109, and the OSD signal generation unit 112 are controlled. The control unit 113 is connected to a built-in HDD 128. The nonvolatile memory 117 of the control unit 113 stores information related to the connection state and setting state of an external device that is HDMI-compatible and does not support CEC.

Further, an operation input unit 118 and a remote control I / F 119 provided in the main body are connected to the control unit 113, and the light receiving unit 120 that receives an operation signal from the remote control (remote controller) 121 is connected to the remote control I / F 119. It is connected to the. For the operation input unit 118, keys, buttons, a touch panel, and the like are applied. The remote controller 121 and the operation input unit 118 correspond to the operation input means of the present invention. These operation input means output an operation signal corresponding to the operation by the user to the control unit 113.
In addition, a communication I / F 122 is connected to the control unit 113, and when the browser is activated by a user operation, the control unit 113 is connected to the Internet 123 via the communication I / F 122. For example, content information provided by the web server 124 having a URL registered in advance can be acquired.

  A card holder 126 is connected to the control unit 113 via a card I / F 125. The memory card 127 attached to the card holder 126 can store received broadcast programs and various video / audio data from the Internet.

Further, the controller 113 is connected to the CEC I / F 131 via the HDMI receiver 129 and the front microcomputer 130, and the other ends of the HDMI receiver 129 and the CEC I / F 131 are connected to the HDMI connector 132.
The television apparatus 100 and an external device (not shown) can be connected with an HDMI cable 135. The HDMI cable 135 is a TMDS (Transition Minimized Differential Signaling; digital signal transfer line) 133 for transmitting a video / audio signal stream that is a digital signal in a differential manner, and a control signal (CEC message) that is common between devices. And a CEC line 134 which is a bi-directional bus for transmitting data. In the television apparatus 100, a stream transmitted from an external device connected via the HDMI cable 135 is received by the HDMI receiver 129 and input to the control unit 113.

  The front microcomputer 130 includes a CEC controller and monitors a CEC message transferred from the CEC line 134 via the CECI / F 131. Even when the control unit 113 is down in the standby mode of the television apparatus 100 or the like, the front microcomputer 130 operates and maintains a state where CEC messages can be transmitted and received.

  An HDMI / CEC compatible external device (not shown) has an HDMI transmitter for transmitting a stream via the TMDS line 133 and a CEC I / F for transmitting / receiving a CEC message via the CEC line 134. . Also, in the case of an external device that supports HDMI but does not support CEC, the specifications of the HDMI cable are the same. At this time, the external device cannot support a CEC message transmitted via the CEC line 134. .

  Furthermore, a connection detection unit 138 for detecting the physical connection of the HDMI cable to the HDMI connector 132 is connected to the control unit 113 of the television apparatus 100. The connection detection unit 138 detects the presence or absence of an HDMI cable connected to the HDMI connector 132 by a sensor or the like, and a photo interrupter can be used as an example. The connection detection unit 138 implements the HDMI cable connection detection means of the present invention.

  Further, a video mouse connector 137 is connected to the control unit 113 via a video mouse I / F 136. A video mouse is connected to the video mouse connector 137. Then, under the control of the control unit 113, an operation signal is transmitted from the video mouse to an external device not compatible with CEC connected by the HDMI cable 135.

With the configuration as described above, in the control unit 113, when the physical connection of the HDMI cable 135 is detected by the connection detection unit 138, the external device connected by the HDMI cable 135 corresponds to the CEC message. Determine whether the device. That is, the control unit 113 implements the device determination unit of the present invention.
Further, the control unit 113 transmits a predetermined CEC message to the CEC line 134 of the HDMI cable 135, and determines whether or not there is a reply to the CEC message, so that the external device connected by the HDMI cable 135 becomes a CEC message. Determine if it is compatible. That is, the control unit 113 implements the device determination unit of the present invention.

  When there is no reply from the external device to the transmitted CEC message, the control unit 113 determines that the external device is a device that does not support CEC, and performs the operation by operating the operation input unit such as the remote controller 121. The operation signal output from the input means is converted into an operation signal for operating the external device, and transmitted to the external device by the video mouse connected to the video mouse connector 137. That is, the control unit 113 implements the operation signal conversion unit and the operation signal transmission unit of the present invention.

  In addition, the ROM 115 or the non-volatile memory 117 of the control unit 113 associates a control code included in an operation signal output by an operation on an operation input unit such as the remote controller 121 with a control code for controlling an external device. The table is recorded. The control unit 113 refers to the table when an operation input is made to the operation input means such as the remote controller 121 and converts the operation signal from the operation input means into an operation signal for controlling the external device. Convert and send. The type of the non-CEC compatible external device is stored in the nonvolatile memory 117 of the control unit 113 according to the input operation by the user.

FIG. 2 is a diagram illustrating a configuration example of connection detection means provided in the vicinity of the HDMI connector in the embodiment of the display device.
As described above, in the embodiment according to the present invention, the connection detection unit 138 for detecting whether or not the HDMI cable 135 is physically connected to the HDMI connector 132 is provided. In the example of FIG. 2, a photo interrupter 138 ′ is used as an example of the connection detection unit 138. Here, a photo interrupter 138 ′ is provided in the vicinity of the HDMI connector (HDMI input terminal) 132 included in the television apparatus 100.
The photo interrupter 138 ′ has a light emitting element and a light receiving element, and these are arranged on both sides of the HDMI connector 132 so as to sandwich the plug insertion portion of the HDMI cable. When a plug of the HDMI cable is connected to the HDMI connector 132, light emission from the light emitting element is blocked, and the light receiving element detects it and outputs a detection signal. The detection signal is input to the control unit 113.

  Note that the connection detection unit 138 is not limited to the photo interrupter 138 ′ as described above, but can detect that the HDMI cable is physically connected to the HDMI connector 132, such as various sensors. It can be adopted as appropriate.

  With the configuration as described above, in the television device 100 of the present embodiment, when the connection detection unit 138 detects that the HDMI cable is physically connected to the HDMI connector 132, the CEC line of the HDMI cable 135 is used. A predetermined CEC message is transmitted to 134. Here, since the HDMI cable 135 is physically connected, it is assumed that an HDMI compatible external device is connected to the other end of the HDMI cable 135, and a process of transmitting a CEC message to the external device is performed. I do. When a predetermined CEC message is not transmitted from the external device, it is determined that the external device is not CEC-compatible.

As the CEC message at this time, <give physical address> defined by HDMI can be used. <Give physical address> is a command for requesting a physical address of a device having an arbitrary logical address. Upon receiving this, the HDMI / CEC-compatible AV device returns a CEC message <report physical address>, thereby notifying its own physical address.
Normally, a HDMI / CEC compatible display device broadcasts <give physical address> to an external device in order to map a device connected to its own HDMI connector when the power is turned on. On the other hand, the external device having the logical address designated by <report physical address> returns <report physical address> for notifying its own physical address.

  In the embodiment according to the present invention, when it is detected that the HDMI cable is physically connected to the HDMI connector 132 using the CEC message <give physical address> used for such mapping, <Give physical address> is transmitted to the HDMI cable via the HDMI connector. At this time, if <report physical address> is not returned, it is determined that an external device not supporting CEC is connected.

  Although it is effective to use <give physical address> as a CEC message for determining whether or not CEC can be supported, the CEC message <set stream path> for switching the input path of the stream is also used. May be. The CEC-compatible external device specified by <set stream path> returns <active source>, which is a CEC message indicating that it is active. In this case, all CEC-compatible devices do not always return <active source>, but all external devices that do not return <active source> may be regarded as non-CEC compatible and controlled.

  Then, the control unit 113 of the television apparatus 100 displays a device selection screen for enabling operation of an external device that does not support CEC on the display unit 106, and registers the type of the connected external device according to the user operation. Here, the vendor and model (device category) of the external device are registered as an example of the type of the external device. The device selection screen and registered external device type information are stored in the ROM 115 or the nonvolatile memory 117. Therefore, the control unit 113 and the display unit 106 correspond to means for displaying the registration screen of the present invention, and the memory such as the ROM 115 and the nonvolatile memory 117 corresponds to the external device type storage means of the present invention.

Control codes corresponding to a plurality of models are stored in advance in the nonvolatile memory 117 or the ROM 115 of the control unit 113. Here, as described above, a table in which the control code included in the operation signal output by the operation input to the operation input means such as the remote controller 121 or the operation input unit 118 is associated with the control code for controlling the external device is provided. Record.
In the above table, the CEC message generated according to the control code included in the operation signal from the remote controller or the like and the control code for controlling the external device are stored in association with each type of the external device. May be.

  The control unit 113 refers to the table when an operation input is made to the operation input means such as the remote controller 121 and converts the operation signal from the operation input means into an operation signal for controlling the external device. The video data is converted and transmitted to an external device using a video mouse connected to the video mouse connector 137. In an external device that does not support CEC, an operation similar to the operation according to the CEC message can be executed by a remote control signal transmitted from the video mouse.

FIG. 3 is a flowchart for explaining an example of determination processing for a CEC-compatible device in the display device of the present invention. Hereinafter, a description will be given with reference to the configuration example of FIG.
The control unit 113 of the television apparatus 100 checks whether the HDMI cable 135 is physically connected to the HDMI connector 132 (step S1). Here, the detection signal from the connection detection unit 138 is monitored by the control unit 113.

  If there is no physical connection of the HDMI cable (step S2-YES), the connection check in step S1 is continued. If it is detected that there is a physical connection (step S2-NO), a CEC message <give physical address> is transmitted to the CEC line 134 of the HDMI cable via the HDMI connector 132 (step S3). ), Waiting for reception of a command (step S4).

If no command is received (step S5-YES), it is determined whether or not a predetermined time has passed without receiving (step S6). The predetermined time is, for example, about several seconds. If the predetermined time has not elapsed, the process returns to step S4 to wait for command reception. On the other hand, if the predetermined time has elapsed, it is determined that the external device connected to the HDMI connector 132 is a CEC non-compliant device, and the external device is registered as a CEC non-compliant device (step S9).
In the external device registration process at this time, the control unit 113 causes the display unit 106 to display a device registration screen prepared in advance, and allows the user to select the external device vendor and the device type (device category) for registration. The registration result is registered in the non-volatile memory 117 or the like, and when the operation input means is operated by the operation input unit 118 or the remote controller 121, the operation signal from these operation input means is transmitted by the control code corresponding to the registered device. It is converted into an operation signal and transmitted through the bidet mouse.

If a command is received in step S5, it is determined whether the received command is a CEC message <report physical address> (step S7). If the received command is <report physical address>, since the connected external device is a CEC compatible device, it is registered as a CEC compatible device (step S8).
When registered as a CEC-compatible device, when an operation for controlling the external device is performed on the operation input unit 118 or the remote controller 121, the control unit 113 displays a CEC message corresponding to the operation. Generate and send to an external device via the HDMI cable. Thereby, the television apparatus 100 can control the external device using the CEC message. If the received command is not <report physical address> in step S7, it is determined as a CEC non-compliant device and registered as a CEC non-compliant device (step S9).

  In the above example, the CEC message <give physical address>, <report physical address> is used to determine whether or not CEC support is possible, but other commands such as <set stream path> and <active source> are used. Even when it is used, it is possible to determine whether or not CEC support is possible by the same processing.

  FIG. 4 is a diagram showing an example of a device selection screen displayed on the display device in the embodiment according to the present invention. The user can display a device selection screen 10 as shown in FIG. 4 on the display unit 106 by performing a predetermined operation on the operation input unit 118 or the remote controller 121 of the television apparatus. In this example, it is assumed that the television apparatus 100 has two HDMI input terminals (HDMI connectors), which are assigned to “INPUT5” and “INPUT6” indicating the input of the television apparatus, respectively.

  When the external device connected to the television apparatus 100 supports CEC, the connection position 12 is displayed on the HDMI input terminals (INPUT5, INPUT6) 11 as shown in FIG. In this example, the connection position 12 is indicated by a numeric code indicating an HDMI physical address such as [1.0.0.0] or [2.0.0.0]. The physical address can be acquired by the television device 100 by a CEC message transmitted from the external device when the television device 100 performs mapping processing of the external device or when the external device is connected.

  Here, the user selects an external device to be operated. That is, in this example, by selecting INPUT5 or INPUT6, an external device connected to the selected HDMI input terminal can be selected as an operation target. For example, when the user performs an operation for controlling an external device using the operation input unit 118 or the remote controller 121, for example, when “one-touch recording” is pressed on the remote controller 121, the user selects the operation target device selected by the user. The recording operation can be instructed by the CEC message. In addition, once the selection operation is executed, the device selection is effectively maintained unless the setting is changed again.

  FIG. 5 is a diagram showing another example of the device selection screen displayed on the display device in the embodiment according to the present invention. When it is determined that a CEC non-compliant device is connected to the HDMI input terminal, a process of registering as a CEC non-compliant device is performed. At this time, the device selection screen 10 displays a device setting display unit 13 for displaying the manufacturer name and device type of the non-CEC compatible device. When “manufacturer” is selected by a user operation, a manufacturer code list 14 is displayed on the device selection screen 10. This indicates the manufacturer of the external device as a code, and the user selects a manufacturer code corresponding to the manufacturer of the external device. Next, when “device type” is selected by a user operation, a device type list 15 is displayed on the diagram device selection screen 10 as shown in FIG. On the other hand, the user selects the type of device (device category). The manufacturer name and device type of the non-CEC compatible device selected in this way are displayed on the device setting display unit 13.

  By the selection operation as described above, a manufacturer name and a device type can be set in advance for a device determined as a CEC non-compliant device. In the control unit 113 of the television apparatus 100, based on the set manufacturer name and device type, the operation signal generated by the key operation of the operation input unit 118 or the remote controller 121 is converted into an operation signal for controlling an external device. Then, the video mouse connected to the video mouse connector 137 transmits to the external device.

FIG. 7 is a diagram illustrating an example of a control code conversion table. Here, different control codes for each manufacturer and device type are stored in the ROM 115 or the nonvolatile memory 117 in advance. The control code in this case is a remote control code that can be transmitted by a video mouse and received by an external device.
In this example, the remote control code is preset using the direct setting. Direct setting refers to the remote control code associated with the device type name and manufacturer name of the recorder, DVD player, etc. by directly specifying the remote control code used for control from the data in the table as shown in FIG. This is what you want to preset.

  In the example of FIG. 7, the operation to be executed when operating the remote control key is defined according to the combination of the device type and the manufacturer name. For example, in this example, the keys for operating the external device are “play”, “fast reverse”, “stop”, “fast forward”, “blue”, “red”, “green”, and “yellow”. . The operations to be executed by the external device are set for these keys. As these keys, for example, a dedicated key for controlling an external device connected by HDMI with the television device 100 can be applied. The same setting can be performed not only on the remote control key but also on the key of the operation input unit 118 of the television apparatus 100.

For example, in the example of FIG. In the case of a combination of the device type and manufacturer name set to “1” to “6”, the “play”, “fast reverse”, “stop”, “fast forward”, “record” keys on the remote control Remote control codes for executing “play”, “fast reverse”, “stop”, “fast forward”, and “record” operations on the external devices are set in advance.
In the case of a combination of the device type and manufacturer name set in the remote control code numbers “7” to “12”, the “menu” is assigned to the “blue”, “red”, “green”, and “yellow” keys on the remote control. ”Is stored in advance. Furthermore, the remote control code No. In the case of a combination of the device type and manufacturer name set to “13” to “18”, the “play”, “fast reverse”, “stop”, “fast forward”, “record” keys on the remote control are “ The remote control code for executing the “mute” operation is stored.

  In the television apparatus 100, when an external device that does not support CEC is selected as an operation target and a key operation for operating the external device is performed on the remote controller 121 (or the operation input unit 118), control is performed. The unit 113 converts the remote control code unique to the remote control by the operation signal output by the key operation into a remote control code for controlling the external device, and transmits it by the video mouse. At this time, referring to the data in FIG. 7, the data is converted into a remote control code corresponding to the key operation of the remote controller 121 according to the combination of the manufacturer name and the device type preset in FIG. Thereby, the remote control code for controlling the external device can be transmitted by setting the manufacturer name and the device type of the external device in advance.

  When a new control code (here, remote control code) is added and stored, the remote control code is extracted and added from the Internet or data broadcasting, or a new one is added via a card slot for memory card media or USB. It is also possible to capture remote control codes. In addition, with the configuration as described above, for example, even when the HDMI standard is upgraded and HDMI / CEC is changed, a control code for operating an operation input unit such as a remote controller and a control code for controlling an external device are provided. By newly storing the correspondence relationship in the table, it becomes possible to execute control of the external device corresponding to the new standard.

  FIG. 8 is a flowchart for explaining an example of remote control code reception processing in the display device of the present invention. When a remote control code is transmitted from the remote control 121 by a key operation of the remote control 121 by the user and the remote control code is received by the light receiving unit 120 of the television apparatus 100 (step S11), the control unit 113 indicates that the remote control code is an external device. It is determined whether it is an external device operation code (control code for external device operation). In this case, as in the above example, “Play”, “Rewind”, “Stop”, “Fast forward”, “Record” key, “Blue”, “Red”, “Green”, “Yellow”, etc. If the remote control code for operating the external device is assigned to the key, the control unit of the display device can determine that the received remote control code is the external device operation code.

  If the received remote control code is not an external device operation code (step S12-No), the television apparatus 100 is operated according to the remote control code (step S15). If the received remote control code is an external device operation code (step S12-Yes), it is determined whether the control target device (external device) is CEC-compatible (step S13). Here, it is determined whether or not the external device connected to the display device is compatible with CEC in accordance with the above-described determination processing of whether or not CEC is compatible with the CEC message.

  If the control target device is CEC compliant, a CEC message for controlling the control target device is transmitted using the CEC line of the HDMI cable (step S14). If the control target device does not support CEC, the received remote control code is converted into a remote control code for the control target device (step S16). Here, as described above, a new remote control code for the control target device corresponding to the key operation of the received remote control code is generated according to the preset manufacturer name and model name. Then, the generated new remote control code is transmitted to the control target device by the video mouse (step S17).

  FIG. 9 is a diagram showing another example of an operation when performing device selection in the display device of the present invention. In the example of FIGS. 4 to 6 described above, a dedicated device selection screen for selecting a device connected to the HDMI input terminal is prepared and the connected device is set. The connected device may be set using such an input switching menu. For example, when the input switching menu 20 as shown in FIG. 9 is prepared in the television device 100 which is an example of the display device according to the present invention, the user uses the predetermined key or the like of the remote control to display the input switching menu 20. The input to which the HDMI input terminal is assigned can be selected.

  For example, it is assumed that the HDMI input terminals are assigned to INPUT5 and INPUT6 as in the example of FIG. When the user selects any of these inputs, the television apparatus 100 detects the physical connection of the HDMI cable to the selected HDMI input terminal and the HDMI cable is connected as in the above example. For example, a predetermined CEC message is transmitted to determine whether or not the external device is CEC compatible. If it is CEC compatible, the external device is registered as a CEC compatible device. If it is not CEC compatible, a screen for registering the manufacturer code and device type (device category) is displayed, and device registration is performed according to user registration. . Subsequent processing can be executed in the same manner as in the above example.

The block diagram for demonstrating one Embodiment of the display apparatus by this invention FIG. 4 is a diagram illustrating a configuration example of connection detection means provided in the vicinity of an HDMI connector in the embodiment of the display device. It is a flowchart for demonstrating an example of the determination process of the CEC corresponding apparatus in the display apparatus of this invention. In embodiment which concerns on this invention, it is a figure which shows an example of the apparatus selection screen displayed with a display apparatus. In embodiment which concerns on this invention, it is a figure which shows the other example of the apparatus selection screen displayed on a display apparatus. In embodiment which concerns on this invention, it is a figure which shows the further another example of the apparatus selection screen displayed with a display apparatus. It is a figure which shows an example of the table for control code conversion. It is a flowchart for demonstrating an example of the reception process of the remote control code in the display apparatus of this invention. It is a figure which shows the other example of operation when performing apparatus selection in the display apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Device selection screen, 11 ... Input terminal, 12 ... Connection position, 13 ... Device setting display part, 14 ... Manufacturer code list, 15 ... Device type list, 20 ... Input switching menu, 100 ... Television apparatus, 101 ... Tuner , 102 ... TV signal processing unit, 103 ... synthesis processing unit, 104 ... output processing unit, 105 ... audio output unit, 106 ... display unit, 107 ... data broadcast processing unit, 108 ... Internet reception processing unit, 109 ... browser processing 112, OSD signal generation unit, 113 ... control unit, 114 ... CPU, 115 ... ROM, 116 ... RAM, 117 ... non-volatile memory, 118 ... operation input unit, 119 ... remote control I / F, 120 ... light receiving unit, 121 ... Remote control, 122 ... Communication I / F, 123 ... Internet, 124 ... Web server, 125 ... Card I / F, 126 ... Car Holder, 127 ... Memory card, 128 ... HDD, 129 ... HDMI receiver, 130 ... Front microcomputer, 131 ... CEC I / F, 132 ... HDMI connector, 133 ... TMDS line, 134 ... CEC line, 135 ... HDMI cable, 136 ... Video mouse I / F, 137 ... Video mouse connector, 138 '... Photo interrupter, 138 ... Connection detector.

Claims (7)

In a display device having an HDMI input terminal for connecting an HDMI cable according to the HDMI standard,
The display device includes an HDMI cable connection detection means for detecting whether an HDMI cable is physically connected to the HDMI input terminal;
When a physical connection of the HDMI cable to the HDMI input terminal is detected by the HDMI cable connection detection means, a predetermined CEC message is transmitted to the CEC line of the HDMI cable connected to the HDMI input terminal Determining whether or not there is a reply to the transmitted CEC message, and determining whether or not the external device connected by the HDMI cable corresponds to the CEC message according to the determination result;
When the device determining means determines that the external device is a device that does not support CEC, an operation signal for operating the external device is transmitted to the external device by means different from a CEC message. An operation signal transmitting means.   The display device according to claim 1, wherein the operation signal transmission unit transmits an operation signal for operating the external device by a transmission unit connected to the display device. The display device according to claim 1, wherein the display device includes an operation input unit that receives an input operation by a user;
An operation signal conversion means for converting a first operation signal output from the operation input means in response to an input operation by the operation input means into a second operation signal for operating the external device;
The operation signal transmission unit is configured to use the second operation signal as an operation signal for operating the external device when the device determination unit determines that the external device is a device not compatible with CEC. Is transmitted to the external device by means different from the CEC message. The display device according to claim 3, wherein the display device associates a control code included in the first operation signal and a control code for controlling the external device for each type of the external device. Means for storing in a table;
The operation signal conversion means refers to the table when converting the first operation signal, and controls the external device based on a control code included in the first operation signal. And the first operation signal is converted into the second operation signal using the extracted control code. 4. The display device according to claim 3, wherein the display device transmits a CEC message generated according to a control code included in the first operation signal and a control code for controlling the external device to the external device. Means for associating and storing each table as a table,
The operation signal converting means refers to the table when converting the first operation signal, and based on a CEC message to be generated according to a control code included in the first operation signal, the external device A control code for controlling the control signal is extracted, and the first operation signal is converted into the second operation signal using the extracted control code. The display device according to claim 3, wherein the display device displays a registration screen for registering a type of the external device when the device determination unit determines that the external device is a device that does not support CEC. Means for displaying;
External device type storage means for storing the type of external device registered using the registration screen,
The display device characterized in that the operation signal conversion means converts the first operation signal in accordance with the type of external device stored in the external device type storage means.   2. The display device according to claim 1, wherein a CEC message transmitted from the display device to the CEC line is a <give physical address> defined by HDMI, and determines whether or not there is a reply from the external device. A display device characterized in that the command is <report physical address> defined by HDMI.

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