JP2008182389A - Portable terminal equipment, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform video image output certainly, when video image is outputted from portable terminal equipment to an external output unit. <P>SOLUTION: When a cell phone unit 1 detects connection with an external output unit 2, the cell phone unit 1 switches a video image output destination to the external output unit 2 so that video image output may be attained by the external output unit 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a portable terminal device and a program having a video output function for outputting video information to a display unit on the apparatus main body side.

In general, a mobile phone device with a digital TV broadcast receiving tuner is limited in size because of its portability, so even if it can receive high-quality images, it is a small screen. I had no choice but to see it.
Therefore, conventionally, a technique is known in which video content displayed on a mobile phone device is transferred to an external monitor and displayed in an enlarged manner (see Patent Document 1).
Japanese Patent Laid-Open No. 2003-244289

 However, in the above-described prior art, the power supply of the external monitor is turned on as a precondition for outputting video information (content information) from the mobile phone device side to the external monitor (television receiver). In addition, the external monitor input mode must be set to the external input mode (for example, remote control mode), and when transmitting a large amount of video information, the mobile phone device and the external monitor must be connected with a communication cable. If one of them is forgotten, the video information transmitted from the mobile phone device cannot be displayed on the external monitor.

  An object of the present invention is to enable reliable video output when video is output from a mobile terminal device to an external output device.

The invention according to claim 1 (first invention) is a portable terminal device having a video output function for outputting video information to a display unit on the device body side, between the external output device and the display unit. Switching means for switching the video output destination and connection detection means for detecting the presence or absence of connection with an external output device capable of video output, and when the connection detection means detects a connection with the external output device The switching means switches the video output destination to the external output device.
Furthermore, a program for realizing the main functions shown in the invention described in claim 1 is provided to the computer (the invention described in claim 10).

The invention described in claim 1 described above may be as follows.
The connection detection means detects a physical connection state with the external output device and also detects an electrical connection state with the external output device, and the connection detection means physically and electrically connects the external output device. When the connection is detected, the switching means switches the video output destination to the external output device (the invention according to claim 2).

  When the connection detection unit detects a connection with an external output device during the operation of the video output function, the mode switching unit switches the video output destination to the external output device (the invention according to claim 3).

  The switching means switches the video output destination to the display section when a non-connected state is detected from the state connected to the external output device by the connection detecting means (the invention according to claim 4).

The invention according to claim 5 (second invention) is a portable terminal device having a video output function for outputting video information to a display unit on the device body side, and is connected to an external output device capable of video output A connection detection unit for detecting presence / absence, and when the connection detection unit detects a connection with the external output device, a control signal for switching the external output device side to a communicable state is transmitted to the external output device. And a transmission means.
Furthermore, a program for realizing the main functions shown in the invention described in claim 5 is provided to the computer (the invention described in claim 11).

The invention described in claim 5 described above may be as follows.
The control signal for switching the external output device to a communicable state is a power-on signal that instructs to turn on the power of the external output device, and a mode that instructs to switch the input mode of the external output device to the external input mode It is at least one of the switching signals (the invention according to claim 6).

 Further provided is a switching means for switching the video output destination between the external output device and the display unit, and when the connection detection means detects a connection with the external output device, in addition to the transmission of the control signal, The switching means switches the video output destination to an external output device (the invention according to claim 7).

 Switching means for switching a video output destination between the external output device and the display unit is further provided, and when the switching to the external output device is instructed as the video output destination, the connection detection means outputs the external output device. The transmission means transmits a control signal for switching the external output device side to a communicable state on the condition that the connection with is detected (the invention according to claim 8).

 A switching unit that switches a video output destination between the external output device and the display unit is further provided, and when the disconnected state is detected from the state connected to the external output device by the connection detecting unit, The switching means switches the video output destination to the display unit (the invention according to claim 9).

  According to the first aspect of the present invention, when the mobile terminal device is connected to the external output device, the video output destination can be set to be switched to the external output device 2 so that the video output is possible with the external output device. It is possible to realize reliable video output from the device to the external output device.

  In the second invention, when the mobile terminal device is connected to the external output device, the external output device can be switched to a communicable state so that the external output device can output video, and the mobile terminal device can output the external output. A reliable video output to the apparatus can be realized.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
This embodiment is a case where the present invention is applied to a mobile phone device with a TV reception output function as a mobile terminal device. FIG. It is the schematic perspective view which showed the case where it outputs.
The mobile phone device 1 is, for example, a foldable device in which two casings (an operation unit casing 1A and a display unit casing 1B) are attached so as to be openable and closable. In addition to a Web access function, a TV reception output function (video output function) and a TV remote control function are provided.

  The TV reception output function is a function that receives a terrestrial digital TV broadcast for a mobile receiver such as a mobile phone and outputs it on the display unit on the mobile phone device 1 side. The table (EPG) and the like can be received. The TV remote control function remotely controls the external output device 2 by infrared communication (short-distance wireless communication). For example, a predetermined key on the operation unit housing 1A is operated in a state where two housings are opened. Accordingly, as a control signal for the external output device 2, for example, a power on / off signal, a channel switching signal, and the like are transmitted by infrared rays. An infrared light emitting unit R1 is disposed at the upper end of the display unit housing 1B, and an infrared light receiving unit R2 is disposed at the front surface of the external output device 2.

  When the mobile phone device 1 with a television reception output function is placed (connected) on the cradle device 3, the mobile phone device 1 is connected to the external output device 2 via the communication cable 4 (wired connection). The external output device 2 is, for example, a stationary television receiver or a personal computer with a television reception output function, and outputs television video and television audio transmitted from the mobile phone device 1 via the cradle device 3. Hereinafter, the output from the mobile phone device 1 to the external output device 2 includes not only video output but also audio output (hereinafter the same). The cradle device 3 has a charging function for charging a secondary battery (not shown) of the mobile phone device 1 and a data relay function (communication function) for transferring the contents of the television broadcast received by the mobile phone device 1 to the external output device 2. The external output device 2 and the cradle device 3 can be connected via a communication cable 4.

FIG. 2 is a block diagram showing basic components of the mobile phone device 1 with a television reception output function.
The CPU 11 is a central central processing unit that controls the overall operation of the mobile phone device 1 in accordance with various programs in the storage unit 12. The storage unit 12 is an internal memory, and has a program area and a data area. In this program area, a program for realizing the present embodiment according to an operation procedure shown in FIGS. Stored. The external recording medium 13 is a removable portable memory that supplies various data programs such as recorded contents to the outside. The external recording medium 13 is composed of, for example, an SD card or an IC card. The memory 14 is an internal memory having a work area, and various data in the memory 14 is saved in the storage unit 12 as necessary.

  The telephone communication unit 15 takes in a signal from the reception side of a transmission / reception unit (baseband unit) connected to an antenna that constitutes a radio unit, demodulates it into a reception baseband signal, and then receives a reception speaker via the acoustic control unit 16. The sound is output from 17. Further, the telephone communication unit 15 takes in the audio data input from the transmission microphone 18 from the acoustic control unit 16, encodes it into a transmission baseband signal, gives it to the transmission side of the transmission / reception unit, and outputs the output from the antenna. . On the other hand, the video content received and acquired via the telephone communication unit 15 by the Internet connection function or the like or the television broadcast content received by the TV reception output function is given to the portable display unit 20 via the display control unit 19 and displayed and output. The

  The portable display unit 20 displays characters, images, and the like with high quality, and is used as a television screen when the television reception output function operates, and is used as a remote control screen when the television remote control function operates. The key operation unit 21 performs dial input, character input, command input, and the like. The key operation unit 21 includes a numeric key / character input key, a dial key, a TV key, a remote control key, and a mode switching key. The CPU 11 executes a process according to a key input signal from the key operation unit 21. The TV key is a key for starting / ending a TV application (TV application) constituting the TV reception output function by ON / OFF operation thereof, and the remote control key is a key for turning ON / OFF the remote control function. The mode switching key is a key for switching between a “portable output mode” in which the video output destination is the mobile display unit 20 and an “external output mode” in which the external output device 2 is used.

 The TV broadcast receiving unit 22 is connected to a TV antenna and extracts a broadcast signal (analog circuit unit). The received broadcast signal is demodulated by OFDM (orthogonal frequency division multiplexing) or multiplexed. It has a digital circuit part that separates and decodes video, audio, and data from signals, decompresses compressed data, etc., and TV video data and character data are displayed and output from the portable display unit 20, The TV sound data is output from the sound speaker 23.

  The remote control infrared communication unit 24 remotely controls the external output device 2 and transmits to the external output device 2 a power on / off signal, a channel signal, a volume adjustment signal, and the like as a remote control signal. The cradle connection unit 25 charges a secondary battery (not shown) of the mobile phone device 1 by a charging current from the cradle device 3 when the mobile phone device 1 is connected to the cradle device 3. Whether the apparatus main body is mounted (connected) on the cradle apparatus 3 based on the connection detection signal output from the cradle connection unit 25, that is, whether the apparatus main body is connected to the external output apparatus 2 via the cradle apparatus 3. If it is not connected to the external output device 2 (cradle device 3) as a result, the video output destination is switched to the “portable output mode” with the mobile display unit 20, but the external output device 2 (cradle) If it is connected to the device 3), it is switched to the “external output mode” in which the video output destination is the external output device 2.

 In a state where the CPU 11 is connected to the external output device 2 via the cradle device 3, the CPU 11 transmits a connection confirmation signal for confirming the electrical connection state with the external output device 2, and whether there is a response. Based on the above, it is determined whether or not the external output device 2 is electrically connected, that is, whether or not the external output device 2 is in a state where video output is possible. For example, the input mode on the external output device 2 side is set to an external input mode (for example, remote control mode) that accepts external input, or is set to an internal input mode (for example, tuner mode) that does not accept external input. Is determined based on the response from the external output device 2. As a result, when the electrical connection state cannot be confirmed (for example, when the tuner mode is set), the input mode on the external output device 2 side should be switched to the “external input mode”. Is transmitted to the external output device 2 via the cradle device 3.

  Next, the operation concept of the cellular phone device 1 in this embodiment will be described with reference to the flowcharts shown in FIGS. Here, each function described in these flowcharts is stored in the form of a readable program code, and operations according to the program code are sequentially executed. In addition, the operation according to the above-described program code transmitted via the transmission medium can be sequentially executed. In other words, in addition to the recording medium, an operation peculiar to this embodiment can be executed by using a program / data supplied externally via a transmission medium.

3 to 6 are flowcharts showing the overall operation of the mobile phone device that is started to be executed when the power is turned on.
First, the CPU 11 activates the telephone communication unit 15 to perform standby processing for registering the current position, and enters a standby state for telephone / mail while reading and displaying a predetermined standby image (FIG. 3). Step S1). In this state, when it is detected that there is an incoming call / mail (YES in step S2), an incoming call notification for generating and outputting an incoming melody is performed, and a call or mail incoming process is executed (step S3). In addition, when any operation is performed in the standby state (YES in step S4), it is checked whether the TV application is instructed by turning on the TV key (step S5). As the process corresponding to the operation key, for example, the telephone call process and the mail transmission process are executed (NO in step S5) (step S6).

  When the TV key is turned on (YES in step S5), the CPU 11 instructs the TV broadcast receiving unit 22 to drive, starts the TV application (step S7), and then accesses the cradle connection unit 25. Then, it is determined whether or not the device main body is connected to the cradle device 3, that is, whether or not the mobile phone device 1 is physically connected to the external output device 2 via the cradle device 3 (step S8). If it is not connected to the cradle device 3 (NO in step S8), the “portable output mode” is selected to switch the mode in order to set the output destination of the TV image to the portable display unit 20 (step S16). . And after starting the portable output operation which displays a television image | video on the portable display part 20 (step S17), it moves to the flow of FIG. 5, and starts the process under "portable output mode" hereafter.

  That is, it is checked whether or not any key is operated in the “portable output mode” in a state where a television image is displayed on the portable display unit 20 (step S25 in FIG. 5). Here, it is checked whether the video output destination is instructed to be switched from the portable display unit 20 to the external output device 2 by operating the mode switching key (step S26), or whether the TV end is instructed by turning off the TV key (step S26). S27) If any other key is operated (NO in step S27), for example, a volume adjustment process or the like is executed as a process corresponding to the operation key (step S28), but the TV end is instructed. If YES (YES in step S27), the process returns to the standby state (step S1 in FIG. 3).

  On the other hand, if the device main body is physically connected to the external output device 2 via the cradle device 3 when the TV application is activated (YES in step S8), the electrical connection state with the external output device 2 is changed. A connection confirmation signal for confirmation is transmitted to the external output device 2 through the cradle device 3 (step S9). In this case, when the connection confirmation signal is normally received, the external output device 2 side transmits a response signal indicating that to the mobile phone device 1 via the cradle device 3. That is, when the input mode on the external output device 2 side is set to the external input mode (for example, remote control mode), a response is made to the mobile phone device 1 and the internal input mode (for example, tuner mode) is set. Sometimes no response.

  As a result of checking whether or not there is a response from the external output device 2 (step S10), the CPU 11 receives a response from the external output device 2 (when the input mode on the external output device 2 side is set to the external input mode) ), It is determined that the video output is possible on the external output device 2 side, that is, the video output is ready, and the process proceeds to step S11 to set the video output destination as the external output device 2. Therefore, the “external output mode” is selected and the mode is switched. Then, after starting the external output operation for transmitting the TV video to the external output device 2 via the cradle device 3 (step S12), the flow proceeds to the flow of FIG. 4 and the processing under the “external output mode” is performed.

  That is, in the “external output mode” in which the TV image is displayed on the external output device 2, when any key is operated (YES in step S18 in FIG. 4), the video output destination is selected by operating the mode switching key. It is checked whether or not an instruction to switch from the external output device 2 to the portable display unit 20 is given (step S19), or whether or not the television end is instructed by an operation of turning off the TV key (step S20). If any other key is operated (NO in step S20), for example, as a process corresponding to the operation key, a signal corresponding to the operation key from the infrared communication unit 24 for remote control, for example, a channel switching signal, A process of transmitting and outputting a volume adjustment signal or the like is executed (step S21). When an instruction to end the television is given (YES in step S20), the process returns to the standby state (step S1 in FIG. 3).

  Further, in the above-described step S10, when the presence / absence of a response from the external output device 2 is checked, the electrical connection state cannot be confirmed (the input mode on the external output device 2 side is set to the tuner mode). If a confirmation message for inquiring whether the video output destination is the portable display unit 20 or the external output device 2 is displayed (step S13), the selection operation is waited (step S14). . This message screen is provided with items “1: external output device” and “2: portable display unit”. When the item “2: portable display unit” is selected and designated by a user operation (step S15). After selecting “portable output mode” in order to set the video output destination to the mobile display unit 20 (step S16), the mobile output operation for displaying the TV video on the mobile display unit 20 is started (step S17). ), When the item “1: external output device” is selected (YES in step S15), the flow proceeds to the flow of FIG.

  That is, in order to switch the external output device 2 to the communication connectable state, the remote control infrared communication unit 24 is driven, and a mode switching signal for instructing that the input mode on the external output device 2 side should be switched to the “external input mode”. Transmission is output as a control signal of the external output device 2 (step S40). Here, when receiving the mode switching signal from the mobile phone device 1, the external output device 2 side switches the input mode from “tuner mode” to “external input mode (remote control mode)”. On the mobile phone device 1 side, in order to confirm whether the external output device 2 side has been switched to the communication connectable state, that is, whether the input mode has been switched to the “external input mode”, A connection confirmation signal for confirming the electrical connection state is transmitted to the external output device 2 via the cradle device 3 (step S41).

  Then, the presence / absence of a response from the external output device 2 is checked (step S42). As a result, when there is no response from the external output device 2 (NO in step S42), the processing moves to the flow of FIG. 5 and the processing under the “portable output mode” is performed, but the response is received from the external output device 2 In other words, that is, when the input mode on the external output device 2 side is set to the external input mode (YES in step S42), the process proceeds to step S38 to set the video output destination as the external output device 2. After selecting the “external output mode” and starting the external output operation for transmitting the TV video to the external output device 2 (step S39), the flow proceeds to the flow of FIG. 4 and the processing under the “external output mode” is performed. .

Next, in the “portable output mode” in which the TV image is displayed on the mobile display unit 20, when connected to the cradle device 3 or from the “portable output mode” to the “external output mode” by the mode switching operation. The operation when the change is instructed will be described.
First, at the timing when no key operation is performed under the “portable output mode” (NO in step S25 in FIG. 5), whether the apparatus main body is physically connected to the external output apparatus 2 via the cradle apparatus 3, that is, the cradle. It is determined whether or not the output of the connection unit 25 has changed from a non-connected state to a connected state (step S29). If not connected to the cradle 3, the process returns to step S25 described above, but when connected to the cradle device 3, (YES in step S29), the flow proceeds to the flow of FIG.

  First, the CPU 11 transmits a connection confirmation signal for confirming an electrical connection state with the external output device 2 to the external output device 2 via the cradle device 3 (step S36), and then from the external output device 2 Whether or not there is a response is checked (step S37). As a result, if a response from the external output device 2 is received, “external output mode” is selected (step S38), and an external output operation for transmitting a television image to the external output device 2 is started (step S39). 4, the process under the “external output mode” is performed. If there is no response from the external output device 2 (NO in step S37), the process proceeds to the above-described step S40, and the remote control infrared communication unit 24 After transmitting the mode switching signal, the same operation as described above is performed.

  On the other hand, when a mode switching operation is performed under the “portable output mode” (YES in step S26 in FIG. 5), it is determined whether or not the cradle device 3 is connected (step S30). Here, if it is connected to the cradle device 3 at the time of the mode switching operation (YES in step S30), the process proceeds to step S36 in FIG. 6, and the same mode switching process as described above is executed. If not connected to the device 3 (NO in step S30), a prompt message for prompting connection to the cradle device 3 is displayed (step S31). The prompt message is not limited to a display message, and may be a voice message.

  Then, the CPU 11 monitors whether or not it is connected to the cradle device 3 until a predetermined time (for example, 20 seconds) elapses after the prompt message is output (steps S32 and 33). In this case, in step S32, in addition to the physical connection with the cradle device 3, the electrical connection state with the external output device 2 is also detected. As in steps S9 and S10 described above. After transmitting the connection confirmation signal, it is detected whether or not it is electrically connected to the external output device 2 by determining whether or not there is a response.

  If it is not connected to the cradle device 3 even after a predetermined time has elapsed (YES in step S33), the process returns to step S25 to invalidate the current mode switching operation, but the cradle device 3 is connected within the predetermined time. When it is done (YES in step S32), after switching from the “portable output mode” to the “external output mode” (step S34), the external output operation for transmitting the TV video to the external output device 2 is performed as described above. Is started (step S35). Then, the process proceeds to the flow of FIG. 4 to perform processing under “external output mode”.

Next, when the cradle device 3 is disconnected in the “external output mode” in which the TV image is displayed on the external output device 2, or from the “external output mode” to the “portable output mode” by the mode switching operation. The operation when an instruction to change to is instructed will be described.
First, at the timing when no key operation is performed under the “external output mode” (NO in step S18 in FIG. 4), whether the apparatus main body has been removed from the cradle apparatus 3, that is, the output of the cradle connection section 25 is not changed from the connected state. It is determined whether the connection state has been changed (step S22).

  As a result, if it remains connected to the cradle device 3 (NO in step S22), the process returns to step S18 described above, but when removed from the cradle device 3 (YES in step S22), “portable output” After “mode” is selected and the mode is switched (step S23), a portable output operation for displaying a television image on the portable display unit 20 is started (step S24). Thereafter, the flow proceeds to the flow of FIG. 5 and the processing under the “portable output mode” is performed. On the other hand, when the switching of the video output destination from the external output device 2 to the portable display unit 20 is instructed by the operation of the mode switching key in the “external output mode” (YES in step S19 in FIG. 4), After selecting the “output mode” (step S23) and starting the portable output operation for displaying the television image on the portable display unit 20 (step S24), the flow proceeds to the flow of FIG. 5 and the same processing is executed thereafter.

  As described above, in this embodiment, when the cellular phone device 1 detects the connection with the external output device 2, the video output destination is set to the external output device 2 so that the external output device 2 can output the video. By switching, reliable video output from the mobile terminal device 1 to the external output device 2 can be realized.

  The CPU 11 detects the physical connection state with the external output device 2 and switches the video output destination to the external output device 2 when the electrical connection state with the external output device 2 is detected. Therefore, the connection relationship between them can be detected reliably, and the video output destination can be switched to the external output device 2 when the connection state with the external output device 2 is established.

  Since the video output destination is switched to the external output device 2 when the connection with the external output device is detected during the operation of the TV application constituting the TV reception output function, immediately after the external output device 2 is connected, It becomes possible to start output on the external output device 2 side.

  Since the video output destination is switched to the portable display unit 20 when the non-connected state is detected from the state connected to the external output device 2 in the “external output mode”, no special key operation is performed. However, the video output destination can be switched to the portable display unit 20 simply by changing from the state connected to the external output device 2 to the disconnected state.

  On the other hand, the mobile phone device 1 transmits a control signal for switching the external output device 2 to the communication connectable state when the connection with the external output device is detected. The external output device 2 can be switched to a communicable state so that output is possible, and reliable video output from the mobile terminal device 1 to the external output device 2 can be realized.

  The control signal for switching the external output device 2 to the communication connectable state is a mode switching signal for instructing that the input mode on the external output device 2 side should be switched to the “external input mode”. Since the transmission is performed from the infrared communication unit 24, the external output device 2 can be set in a communicable state when the external output device 2 is connected, and the external output device 2 can be remotely controlled.

 When a connection with the external output device 2 is detected, a mode switching signal is transmitted from the remote control infrared communication unit 24 to the external output device 2, and the video output destination on the mobile phone device 1 side is set to the external output device. Therefore, when the external output device 2 is connected, video output from the external output device 2 can be started immediately.

 When switching to the external output device 2 is instructed as a video output destination, the external output device 2 is set in an “external input mode” in which communication is possible on the condition that the external output device 2 is connected. Since the mode switching signal for switching is transmitted, the external output device 2 side can be set in a communicable state in conjunction with the video output destination.

  In the above-described embodiment, the mode switching signal for instructing that the input mode on the external output device 2 side should be switched to the “external input mode” as the control signal for switching the external output device 2 to the communication connectable state. However, it is also possible to transmit a power ON signal instructing that the power supply of the external output device 2 should be turned on, and to sequentially transmit the power ON signal and the mode switching signal. It may be.

  In the embodiment described above, when detecting whether or not the external output device 2 is connected, it is detected whether or not the mobile phone device 1 is connected to the external output device 2 via the cradle device 3. However, for example, the connection between the mobile phone device 1 and the external output device 2 may be a direct connection in which the mobile phone device 1 is inserted into the connector portion on the external output device 2 side. 1 and the external output device 2 may be connected via a communication cable. Furthermore, video information may be transmitted and received between the mobile phone device 1 and the external output device 2 by line communication.

  In the embodiment described above, when the input mode of the external output device 2 is switched to the “external output mode”, video is output from the mobile phone device 1 to the external output device 2. Video output to the external output device 2 may be started when a reception channel selection operation is performed on the first side.

In the above-described embodiments, a stationary television receiver is shown as the external output device 2, but it may be another mobile phone device with a TV reception function, or an external monitor device (external display device). There may be.
In the embodiment described above, the remote control instruction signal for the external output device 2 is transmitted by infrared communication, but may be transmitted by the Bluetooth communication method.

  In the above-described embodiments, the case where the TV video from the TV broadcast receiving unit 22 is output to the external output device 2 is exemplified. However, the video content is not limited to the TV broadcast reception output, Video content downloaded and received via the Internet may be output from the external output device 2.

In the above-described embodiment, the foldable mobile phone device 1 in which two housings (the operation unit housing 1A and the display unit housing 1B) are attached to be openable and closable is illustrated. A folding / rotating (two-axis rotating type) mobile phone device or the like that can change the form of the apparatus main body to four styles according to the positional relationship between the two cases may be used.
In addition, the present invention is not limited to a mobile phone device with a TV reception function, and can also be applied to a mobile terminal device such as a PDA, an electronic camera, an electronic watch, a music player, etc. with a TV reception function.

The schematic perspective view which showed the case where the television broadcast content received with the mobile telephone apparatus 1 applied as a portable terminal device is output from the external output device 2. FIG. The block diagram which showed the basic component of the mobile telephone apparatus 1 with a television reception output function. The flowchart which showed the whole operation | movement of the mobile telephone apparatus started execution with power activation. The flowchart following FIG. The flowchart following FIG. The flowchart following FIG.

Explanation of symbols

1 Mobile phone device 2 External output device 3 Cradle device 4 Communication cable 11 CPU
DESCRIPTION OF SYMBOLS 12 Memory | storage part 15 Telephone communication part 20 Mobile display part 21 Key operation part 22 Television broadcast receiving part 23 Sound speaker 24 Infrared communication part for remote control 25 Cradle connection part

Claims (11)

A portable terminal device having a video output function for outputting video information to a display unit on the device body side,
Switching means for switching a video output destination between the external output device and the display unit;
Connection detection means for detecting the presence or absence of connection with an external output device capable of video output;
And the switching means switches the video output destination to the external output device when the connection detecting means detects a connection with the external output device. In addition to detecting the physical connection state with the external output device, the connection detection means detects the electrical connection state with the external output device,
When it is detected that the connection detection unit is physically and electrically connected to the external output device, the switching unit switches the video output destination to the external output device.
The portable terminal device according to claim 1, which is configured as described above. When the connection detection unit detects a connection with an external output device during the operation of the video output function, the mode switching unit switches the video output destination to the external output device.
The portable terminal device according to claim 1, which is configured as described above. When the non-connected state is detected from the state connected to the external output device by the connection detecting unit, the switching unit switches the video output destination to the display unit,
The portable terminal device according to claim 1, which is configured as described above. A portable terminal device having a video output function for outputting video information to a display unit on the device body side,
Connection detection means for detecting the presence or absence of connection with an external output device capable of video output;
A transmission means for transmitting a control signal for switching the external output device side to a communicable state to the external output device when a connection with the external output device is detected by the connection detection means;
A portable terminal device comprising: The control signal for switching the external output device to a communicable state is a power-on signal that instructs to turn on the power of the external output device, and a mode that instructs to switch the input mode of the external output device to the external input mode It is at least one of the switching signals.
The mobile terminal device according to claim 5. A switching means for switching a video output destination between the external output device and the display unit;
When the connection detection unit detects a connection with an external output device, in addition to transmitting the control signal, the switching unit switches the video output destination to the external output device.
The mobile terminal device according to claim 5, which is configured as described above. A switching means for switching a video output destination between the external output device and the display unit;
When the switching to the external output device is instructed as the video output destination, on the condition that the connection detection unit detects the connection with the external output device, the transmission means Send a control signal to switch to a communicable state,
The mobile terminal device according to claim 5, which is configured as described above. A switching unit that switches a video output destination between the external output device and the display unit is further provided, and when the disconnected state is detected from the state connected to the external output device by the connection detecting unit, The switching means switches the video output destination to the display unit.
The mobile terminal device according to claim 5, which is configured as described above. Against the computer,
A function of switching a video output destination between an external output device capable of video output and a display unit on the apparatus main body side;
A function of detecting the presence or absence of connection with the external output device;
A function of switching a video output destination to the external output device when connection with the external output device is detected;
A program to realize Against the computer,
A function to detect the presence or absence of connection to an external output device capable of video output;
A function of transmitting a control signal for switching the external output device side to a communicable state to the external output device when a connection with the external output device is detected;
A program to realize

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