WO2018207477A1 - Relay device - Google Patents

Relay device Download PDF

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Publication number
WO2018207477A1
WO2018207477A1 PCT/JP2018/012063 JP2018012063W WO2018207477A1 WO 2018207477 A1 WO2018207477 A1 WO 2018207477A1 JP 2018012063 W JP2018012063 W JP 2018012063W WO 2018207477 A1 WO2018207477 A1 WO 2018207477A1
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WO
WIPO (PCT)
Prior art keywords
video signal
interface
application
relay device
mobile terminal
Prior art date
Application number
PCT/JP2018/012063
Other languages
French (fr)
Japanese (ja)
Inventor
川口　謙一
Original Assignee
株式会社ソシオネクスト
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社ソシオネクスト filed Critical 株式会社ソシオネクスト
Publication of WO2018207477A1 publication Critical patent/WO2018207477A1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers

Definitions

  • the present invention relates to a relay device that relays a video signal, and more particularly to a desktop relay device that relays a video signal from a portable terminal to an external display device.
  • Patent Document 1 discloses a technique for displaying image data output by an application of a terminal device on the external display device when the terminal device is connected to the external display device.
  • an object of the present invention is to provide a relay device capable of suppressing adverse effects caused by interruption of output of a video signal from a mobile terminal when moving image content displayed on the mobile terminal is also displayed on a television.
  • a relay device is a relay device that relays a video signal from a mobile terminal to an external display device, and is provided in the housing that detachably holds the mobile terminal, A first interface connected to the portable terminal held in the housing, a second interface provided in the housing and connected to the external display device, and a control unit housed in the housing.
  • the control unit includes: a detection unit that detects connection and disconnection of the mobile terminal to and from the first interface; a storage control unit that controls writing and reading of video signals to and from the storage unit; and the first interface A selection unit that outputs at least one of an input video signal and a video signal read from the storage unit to the external display device via the second interface;
  • the storage control unit writes the video signal input from the first interface to the storage unit
  • the selection unit includes: When the video signal input from the first interface is output and disconnection of the portable terminal to the first interface is detected, (i) the storage control unit receives the video signal from the storage unit (Ii) The selection unit outputs the video signal read from the storage unit.
  • a relay device is a relay device that relays a video signal from a mobile terminal to an external display device, the housing holding the mobile terminal in a detachable manner, and the housing A first interface provided to be connected to the portable terminal held by the casing; a second interface provided to the casing and connected to the external display device; and a control housed in the casing.
  • the portable terminal has a first application and a second application, each of the first application and the second application outputs a video signal to the relay device, and the control unit includes: A determination unit for determining whether the video signal input from the first interface is output by the first application or the second application; and a storage unit A storage control unit that controls writing and reading of a video signal to be transmitted, and at least one of a video signal input from the first interface and a video signal read from the storage unit to the external display device via the second interface.
  • FIG. 1 is a diagram illustrating a usage example of the relay device according to the first embodiment.
  • 2A is a perspective view of the relay device according to Embodiment 1.
  • FIG. 2B is a perspective view of the relay device according to Embodiment 1.
  • FIG. 3 is a functional block diagram of the relay apparatus according to the first embodiment.
  • FIG. 4 is a functional block diagram illustrating an internal configuration of the storage unit of the relay apparatus according to the first embodiment.
  • FIG. 5 is a communication sequence diagram illustrating an example of the operation of the relay device according to the first embodiment.
  • FIG. 6 is a timing chart illustrating an example of the operation of the relay device according to the first embodiment.
  • FIG. 7 is a diagram for explaining an example of the operation of the relay device according to the first embodiment.
  • FIG. 1 is a diagram illustrating a usage example of the relay device according to the first embodiment.
  • 2A is a perspective view of the relay device according to Embodiment 1.
  • FIG. 2B is a perspective view of
  • FIG. 8 is a diagram for explaining an example of the operation of the relay apparatus according to the first embodiment.
  • FIG. 9 is a functional block diagram of the relay device according to the second embodiment.
  • FIG. 10 is a communication sequence diagram illustrating an example of the operation of the relay device according to the second embodiment.
  • FIG. 11 is a timing chart illustrating an example of the operation of the relay device according to the second embodiment.
  • FIG. 12 is a diagram for explaining an example of the operation of the relay device according to the second embodiment.
  • FIG. 13 is a functional block diagram of the relay apparatus according to the third embodiment.
  • FIG. 14 is a communication sequence diagram illustrating an example of the operation of the relay device according to the third embodiment.
  • FIG. 15 is a timing chart illustrating an example of the operation of the relay device according to the third embodiment.
  • FIG. 16 is a diagram for explaining an example of the operation of the relay device according to the third embodiment.
  • FIG. 17 is a diagram for explaining an example of the operation of the relay device according to another embodiment.
  • FIG. 1 is a diagram illustrating a usage example of the relay device 10 according to the first embodiment.
  • 2A and 2B are perspective views of relay device 10 according to Embodiment 1.
  • FIG. 1 also shows peripheral devices (remote controller (remote controller) 5, portable terminal 6, television 7) related to the relay device 10.
  • FIG. 1 also shows peripheral devices (remote controller (remote controller) 5, portable terminal 6, television 7) related to the relay device 10.
  • the X axis is an axis extending in the horizontal direction of the screen 6 a of the mobile terminal 6 held by the relay device 10.
  • the Z axis is an axis extending in the vertical direction when the relay device 10 is placed on a horizontal plane.
  • the Y axis is an axis orthogonal to the X axis and the Z axis.
  • the positive direction and negative direction of the X axis are referred to as right and left, respectively.
  • the positive direction and negative direction of the Y axis are referred to as rear and front, respectively.
  • the positive direction and negative direction in the Z-axis direction are referred to as “up” and “down”, respectively.
  • the remote controller 5 is a remote operation device that transmits a command to the relay device 10 wirelessly.
  • the remote controller 5 has a plurality of buttons and transmits a radio signal (for example, an infrared signal) corresponding to the pressed button.
  • the remote controller 5 may include an acceleration sensor, and may transmit a radio signal corresponding to an operation of shaking the remote controller 5 so as to generate acceleration in the vertical and horizontal directions.
  • the portable terminal 6 is a portable information terminal having a rectangular screen 6a.
  • the mobile terminal 6 is a smartphone or a tablet computer that communicates by connecting to the Internet or a telephone network, or that executes various applications (software programs).
  • an application may be abbreviated as an application.
  • the television 7 is an example of an external display device having a screen 7a that displays a video signal output from the relay device 10, and is, for example, a 4K television, an 8K television, or the like.
  • the relay device 10 is a desktop device (so-called cradle or docking station) that holds the mobile terminal 6.
  • the relay device 10 relays the video signal output from the mobile terminal 6 having the rectangular screen 6 a to the television 7.
  • the relay device 10 includes a housing 11, a first interface 12, a second interface 13, a third interface 14, and a power supply terminal 15.
  • the housing 11 has a substantially triangular prism shape, and has a holding portion 11a for holding the mobile terminal 6 on the front surface corresponding to one side surface of the triangular prism.
  • the casing 11 is made of, for example, molded resin, and a control unit (not shown) is accommodated in the casing 11.
  • the first interface 12 is provided in the housing 11 and is directly connected to the portable terminal 6 without a cable.
  • the first interface 12 includes a connection terminal directly plugged into a dedicated connector for charging and communication (for example, a lightning connector, USB, etc.) of the mobile terminal 6.
  • the relay device 10 supplies, for example, power to the mobile terminal 6 via the first interface 12.
  • the relay device 10 transmits data to the mobile terminal 6 or receives data from the mobile terminal 6 via the first interface 12.
  • the second interface 13 is provided in the housing 11 and connected to the television 7.
  • the second interface is a communication interface for transmitting a video signal (for example, HDMI (registered trademark); High-Definition Multimedia Interface).
  • the second interface 13 includes a connection terminal to which the cable 4 is connected.
  • the third interface 14 is a communication interface that receives commands from the remote controller 5 wirelessly.
  • the third interface 14 is an infrared communication interface.
  • the power terminal 15 is a female connector into which a power cord 3 such as an AC-DC adapter or an AC power cable is inserted.
  • the power cord 3 is connected to a commercial power source.
  • FIG. 3 is a functional block diagram of the relay device 10 according to the first embodiment.
  • FIG. 4 is a block diagram illustrating an internal configuration of the storage unit 17 of the relay device 10 according to the first embodiment.
  • the relay apparatus 10 includes a first interface 12, a second interface 13, a third interface 14, a control unit 16, and a storage unit 17 as functional components.
  • the first interface 12 is directly connected to the mobile terminal 6 held in the housing 11 without a cable.
  • the relay device 10 receives a video signal from the mobile terminal via the first interface 12. That is, a video signal is input from the first interface 12 to the relay device 10.
  • the second interface 13 is connected to the television 7.
  • the relay device 10 outputs a video signal to the television 7 via the second interface.
  • the third interface 14 receives a command transmitted wirelessly from the remote controller 5.
  • the third interface 14 converts an infrared signal received from the remote controller 5 into an electrical signal and outputs the electrical signal to the control unit 16.
  • the control unit 16 includes a detection unit 16a, a storage control unit 16b, and a selection unit 16c.
  • the control unit 16 includes one or more dedicated electronic circuits corresponding to the detection unit 16a, the storage control unit 16b, and the selection unit 16c.
  • the control unit 16 may include a processor (not shown) and a memory (not shown) in which a software program or an instruction is stored instead of one or more dedicated electronic circuits. In this case, when the software program or instruction is executed, the processor functions as the detection unit 16a, the storage control unit 16b, and the selection unit 16c.
  • the detecting unit 16a detects connection and disconnection of the mobile terminal 6 to the first interface 12. That is, the detection unit 16 a detects whether or not the mobile terminal 6 is connected to the first interface 12. Specifically, the detection unit 16a detects connection and disconnection by monitoring the voltage level of a predetermined pin included in the connection terminal of the first interface 12, for example. For example, the detection unit 16a may detect connection and non-connection based on whether or not a response message can be received from the mobile terminal 6 via the first interface 12.
  • the storage control unit 16b controls writing and reading of video signals to and from the storage unit 17. Specifically, when the connection of the portable terminal 6 to the first interface 12 is detected, the storage control unit 16 b writes the video signal input from the first interface 12 in the storage unit 17. On the other hand, when the disconnection of the mobile terminal 6 to the first interface 12 is detected, the storage control unit 16 b reads the video signal from the storage unit 17.
  • the storage control unit 16b switches between writing and reading of the video signal to and from the storage unit 17 according to the connection and disconnection of the mobile terminal 6 to the first interface 12. That is, when the connection of the portable terminal 6 to the first interface 12 is detected, the storage control unit 16b stores the input video signal without reading the video signal from the storage unit 17. Write to part 17. When the disconnection of the mobile terminal 6 to the first interface 12 is detected, the storage control unit 16 b does not write the input video signal to the storage unit 17 but stores the video signal stored in the storage unit 17. Is read.
  • the selection unit 16 c outputs at least one of the video signal input from the first interface 12 and the video signal read from the storage unit 17 to the television 7 via the second interface 13.
  • the selection unit 16 c selectively outputs the video signal input from the first interface 12 and the video signal read from the storage unit 17 to the television 7. Specifically, the selection unit 16c selects either the first interface 12 or the storage unit 17 based on the detection result by the detection unit 16a. Then, the selection unit 16 c outputs the video signal input from the selected first interface 12 or storage unit 17 to the selection unit 16 c to the television 7 via the second interface 13. That is, the selection unit 16c switches the input between the first interface 12 and the storage unit 17 based on the detection result by the detection unit 16a.
  • the selection unit 16c when the connection of the mobile terminal 6 to the first interface 12 is detected, the selection unit 16c outputs the video signal input from the first interface 12. At this time, the video signal stored in the storage unit 17 is not output. On the other hand, when the disconnection of the mobile terminal 6 to the first interface 12 is detected, the selection unit 16 c outputs the video signal read from the storage unit 17.
  • the storage unit 17 is, for example, a semiconductor memory, and stores a video signal (that is, a frame included in the video signal).
  • a video signal that is, a frame included in the video signal.
  • FIG. 4 is a functional block diagram showing an internal configuration of the storage unit 17 of the relay device 10 according to the first embodiment. Writing and reading of the storage unit 17 is controlled by the storage control unit 16b.
  • the storage unit 17 has at least two storage areas (here, the first storage area 17a and the second storage area 17b).
  • Each of the first storage area 17a and the second storage area 17b has a size capable of storing at least one frame.
  • a frame means one of a plurality of images (still images) constituting a moving image.
  • the storage control unit 16b When the connection of the portable terminal 6 to the first interface 12 is detected, the storage control unit 16b displays a plurality of frames included in the video signal input from the first interface 12 as the first storage area 17a and the second storage area 17a. The storage area 17b is overwritten alternately. In addition, when the storage control unit 16b detects that the mobile terminal 6 is disconnected from the first interface 12 when a frame is overwritten on one of the first storage area 17a and the second storage area 17b, A frame is read from the other of the first storage area 17a and the second storage area 17b.
  • FIG. 5 is a communication sequence diagram illustrating an example of the operation of the relay device 10 according to the first embodiment. Here, an example of the exchange among the remote controller 5, the portable terminal 6, the relay device 10, and the television 7 is shown.
  • control unit 16 of the relay apparatus 10 detects that the second interface 13 is connected to the television 7 via the cable 4
  • device information including the screen size of the television 7 is obtained via the second interface 13. Obtained from the television 7 (S10).
  • the remote controller 5 transmits an infrared command to the relay device 10 according to the operation of the operator (S11) (S12).
  • the control unit 16 of the relay device 10 converts the command received by the third interface 14 into a command that can be decoded by the mobile terminal 6 and outputs the converted command to the mobile terminal 6 via the first interface 12 ( S13).
  • the command output to the mobile terminal 6 is a command for operating the application of the mobile terminal 6.
  • the command is a command for operating a video (for example, a streaming video or the like).
  • the command for manipulating the video is, for example, a command to select, play, fast forward playback, reverse playback, stop or pause, or any combination thereof.
  • the mobile terminal 6 that has received the command from the relay device 10 outputs a video signal to the relay device 10 in accordance with the received command (S14).
  • the relay device 10 outputs the video signal received from the mobile terminal 6 via the first interface 12 to the television 7 (S15). Further, the storage control unit 16b starts saving the video signal input from the first interface 12 in the storage unit 17 (S16).
  • the television 7 reproduces the input video signal and displays the video content on the screen 7a (S17).
  • the content (streaming video or the like) displayed on the small screen 6 a of the mobile terminal 6 is also displayed on the large screen 7 a of the television 7. That is, the same video content is displayed on both the screen 6 a of the mobile terminal 6 and the screen 7 a of the television 7.
  • the detection unit 16a of the relay device 10 detects the disconnection of the mobile terminal 6 (S21).
  • the storage control unit 16b of the relay device 10 stops storing the video signal input from the first interface 12 in the storage unit 17 (S22). Further, the storage control unit 16b reads the video signal (frame) stored in the storage unit 17.
  • the selection unit 16c switches the input of the video signal to be output to the television 7 from the first interface 12 to the storage unit 17 (S23).
  • the frame read from the storage unit 17 is output to the television 7 as a video signal (S24).
  • the television 7 displays the video content on the screen 7a based on the input video signal (S25). That is, one frame read from the storage unit 17 is displayed on the screen 7 a of the television 7. In other words, the moving image content is displayed in a paused state on the screen 7 a of the television 7.
  • the detection unit 16a of the relay device 10 detects the connection of the mobile terminal 6 (S31).
  • the selection unit 16c switches the input of the video signal to be output to the television 7 from the storage unit 17 to the first interface 12 (S32).
  • the video signal input from the first interface 12 is output to the television 7 via the second interface 13 (S33, S34).
  • the storage control unit 16b of the relay device 10 resumes saving the video signal input from the first interface 12 in the storage unit 17 (S35).
  • the television 7 displays the video content on the screen 7a based on the input video signal (S36). That is, the same video content is displayed on both the screen 6 a of the mobile terminal 6 and the screen 7 a of the television 7.
  • FIG. 6 is a timing chart illustrating an example of the operation of the relay device 10 according to the first embodiment.
  • time flows from left to right the characters in the hexagonal horizontal bar represent the action or state, and the length of the horizontal bar represents the time of the action or state.
  • the connection status bar 100 indicates whether the connection status between the mobile terminal 6 and the relay device 10 is “connected” or “disconnected”.
  • the connection state between the mobile terminal 6 and the relay device 10 changes from “connected” to “not connected” at T4, and returns from “not connected” to “connected” at T5.
  • the input video signal bar 101 indicates a frame of a video signal transmitted from the mobile terminal 6 to the relay device 10 via the first interface 12.
  • the input of the frame F3 is interrupted at T4.
  • frame input is resumed at T5, and frames Fn and Fn + 1 are sequentially input.
  • n is an arbitrary natural number.
  • the storage control bar 102 indicates the operation of the storage unit 17 by the storage control unit 16b.
  • the operation of the storage unit 17 changes from “write” to “read” at T4, and changes from “read” to “write” at T5.
  • the control target storage area bar 103 indicates a storage area to be written and read.
  • the target storage area is switched between the first storage area 17a and the second storage area 17b.
  • the first storage area bar 104 indicates a frame stored in the first storage area 17a.
  • the frames F1, F3, and Fn are overwritten in the first storage area 17a in order.
  • overwriting of the frame F3 to the first storage area 17a is started at T3, and as a result, the frame F1 is deleted from the first storage area 17a.
  • the second storage area bar 105 indicates a frame stored in the second storage area 17b.
  • frames F2 and Fn + 1 are stored in the second storage area 17b in order.
  • overwriting of the frame Fn + 1 to the second storage area 17b is started from T6, and as a result, the frame F2 is deleted from the second storage area 17b.
  • the output video signal bar 106 indicates a frame of a video signal transmitted from the relay apparatus 10 to the television 7 via the second interface 13.
  • the frame F2 is output again, and then the frames Fn and Fn + 1 are output in order.
  • the frames F1 to F3 input via the first interface 12 are sequentially output to the television 7. Is done.
  • the storage control unit 16b writes the frames F1 to F3 alternately in order to the first storage area 17a and the second storage area 17b of the storage unit 17.
  • the storage control unit 16b is opposite to the first storage area 17a in which the frame F3 is being written.
  • the frame F2 is read from the second storage area 17b.
  • the selection unit 16 c switches the input of the video signal to be output to the television 7 from the first interface 12 to the storage unit 17.
  • the frame F2 read from the second storage area 17b is continuously output from the relay device 10 to the television 7 (T4 to T5).
  • the selection unit 16c stores the input of the video signal to be output to the television 7 as a storage unit Switch from 17 to the first interface 12.
  • the frames Fn and Fn + 1 input from the first interface 12 are sequentially output from the relay device 10 to the television 7.
  • the storage control unit 16b writes the frames Fn and Fn + 1 alternately in order in the first storage area 17a and the second storage area 17b of the storage unit 17 (T5 to T7).
  • FIGS. 7 and 8 are diagrams for explaining an example of the operation of the relay device 10 according to the first embodiment. Specifically, FIG. 7 shows a state where the mobile terminal 6 is attached to the relay device 10 (T1 to T4 in FIG. 6). FIG. 8 shows a state where the mobile terminal 6 is detached from the relay device 10 (T4 to T5 in FIG. 6).
  • the relay device 10 is a device that relays a video signal from the mobile terminal 6 to the television 7, and includes the housing 11 that detachably holds the mobile terminal 6, and the housing 11.
  • the control unit 16 includes a detection unit 16 a that detects connection and disconnection of the mobile terminal 6 to the first interface 12, a storage control unit 16 b that controls writing and reading of video signals to and from the storage unit 17, and the first interface 12.
  • a selection unit 16 c that outputs at least one of the video signal input from the storage unit 17 and the video signal read from the storage unit 17 to the television 7 via the second interface 13.
  • the storage control unit 16b writes the video signal input from the first interface 12 to the storage unit 17, and (ii) )
  • the selection unit 16c outputs the video signal input from the first interface 12.
  • the storage control unit 16b reads the video signal from the storage unit 17, and (ii) the selection unit 16c stores The video signal read from the unit 17 is output.
  • the relay device 10 can include the housing 11 that holds the mobile terminal 6, the mobile terminal 6 is connected to the television 7 in a state where the mobile terminal 6 is held in the housing 11. Therefore, when operating the mobile terminal 6, the user does not need to remove the mobile terminal 6 from the relay device 10 and hold the mobile terminal 6 by hand. Even if the mobile terminal 6 is removed from the relay device 10 when the moving image content is displayed on the screen 7 a of the television 7, the video signal read from the storage unit 17 is output from the relay device 10 to the television 7. Therefore, the display of the image does not disappear from the screen 7a of the television 7. Therefore, it is possible to suppress discomfort to the viewer of the moving image content, and it is possible to suppress adverse effects due to the interruption of the output of the video signal from the mobile terminal 6.
  • the storage unit 17 has two storage areas (a first storage area 17 a and a second storage area 17 b), and the storage control unit 16 b is connected to the first interface 12 by the mobile terminal 6.
  • the connection is detected, a plurality of frames included in the video signal input from the first interface 12 are overwritten alternately on the two storage areas, and one of the two storage areas (for example, the second storage area 17b). If the connection of the portable terminal 6 to the first interface is detected when the frame is overwritten in the frame, the frame is read from the other of the two storage areas (for example, the first storage area 17a).
  • the storage unit 17 only needs to have two storage areas for storing frames, the capacity of the storage unit 17 can be reduced, and the cost of the storage unit 17 can be reduced.
  • FIG. 9 is a functional block diagram of the relay device 20 according to the second embodiment.
  • the relay device 20 includes a first interface 12, a second interface 13, a third interface 14, a control unit 26, and a storage unit 17 as functional components.
  • the control unit 26 includes a determination unit 26a, a storage control unit 26b, and a selection unit 26c.
  • the determination unit 26a determines whether the video signal input from the first interface 12 is output by the first application or the second application of the mobile terminal 6. For example, the determination unit 26a performs determination based on information indicating the type of application added to the video signal.
  • the first application is, for example, a video playback application
  • the second application is, for example, a telephone application.
  • the moving image reproduction application is a software program for reproducing moving image content, and outputs a video signal of the reproduced moving image content.
  • the moving image content may be a moving image content streamed on the Internet or a moving image content recorded on a recording medium.
  • the telephone application is a software program for performing two-way audio communication, and outputs a video signal for notifying incoming calls.
  • the storage control unit 26b controls writing and reading of the video signal with respect to the storage unit 17. Specifically, when it is determined that the video signal input from the first interface 12 is a video signal output by the first application, the storage control unit 26b receives the video signal input from the first interface 12 as a video signal. Write to the storage unit 17. On the other hand, when it is determined that the video signal input from the first interface 12 is a video signal output by the second application, the storage control unit 26 b reads the video signal from the storage unit 17.
  • the selection unit 26c outputs at least one of the video signal input from the first interface 12 and the video signal read from the storage unit 17 to the television 7 via the second interface 13.
  • the selection unit 26 c selectively outputs the video signal input from the first interface 12 and the video signal read from the storage unit 17 to the television 7. Specifically, the selection unit 26c selects either the first interface 12 or the storage unit 17 based on the determination result by the determination unit 26a. Then, the selection unit 26 c outputs the video signal obtained from the selected first interface 12 or the storage unit 17 to the television 7 via the second interface 13. That is, the selection unit 26c switches the input between the first interface 12 and the storage unit 17 based on the determination result by the determination unit 26a.
  • the selection unit 26 c receives the video signal input from the first interface 12. Output.
  • the selection unit 26c outputs the video signal read from the storage unit 17.
  • FIG. 10 is a communication sequence diagram illustrating an example of the operation of the relay device 20 according to the second embodiment.
  • the telephone application When the telephone application receives a call while the moving picture playback application is playing back the moving picture on the mobile terminal 6, the telephone application outputs a video signal for notifying the incoming call (S40).
  • the determination unit 26a of the relay device 20 determines that the video signal input from the first interface 12 is output by the telephone application of the mobile terminal 6 (S41).
  • the storage control unit 26b of the relay device 20 stops storing the video signal input from the first interface 12 in the storage unit 17, and reads the video signal (frame) stored in the storage unit 17 (S42).
  • the selection unit 26c switches the input of the video signal to be output to the television 7 from the first interface 12 to the storage unit 17 (S43).
  • the frame read from the storage unit 17 is output to the television 7 as a video signal (S44).
  • the television 7 displays the input video signal on the screen 7a (S45). That is, one frame read from the storage unit 17 is displayed on the screen 7 a of the television 7.
  • FIG. 11 is a timing chart illustrating an example of the operation of the relay device 20 according to the second embodiment.
  • time flows from left to right the characters in the hexagonal horizontal bar represent the action or state, and the length of the horizontal bar represents the time of the action or state. ing.
  • the operation application bar 200 indicates an application that is operating on the mobile terminal 6 and is an output source of the video signal.
  • “video playback application” is changed to “phone application” at T4
  • “phone application” is changed to “video playback application” at T5.
  • the input video signal bar 201 indicates a frame of a video signal transmitted from the mobile terminal 6 to the relay device 20 via the first interface 12.
  • the frame F3 is switched to the frame F_TEL at T4.
  • frames Fn and Fn + 1 are sequentially input from T5.
  • the frames F1 to F3, Fn, and Fn + 1 are frames output by the video playback application
  • the frame F_TEL is a frame output by the telephone application.
  • the frames F1 to F3 which are video signals output by the video reproduction application
  • the frames F1 to F3 are sequentially output to the television 7. (T1-T4).
  • the storage control unit 26b writes the frames F1 to F3 alternately in order in the first storage area 17a and the second storage area 17b of the storage unit 17.
  • the frame F_TEL is input to the relay device 20 via the first interface 12.
  • the storage control unit 26b reads the frame F2 from the second storage area 17b opposite to the first storage area 17a in which the frame F3 is being written.
  • the selection unit 26 c switches the input of the video signal to be output to the television 7 from the first interface 12 to the storage unit 17.
  • the frame F2 read from the second storage area 17b is continuously output from the relay device 20 to the television 7 (T4 to T5).
  • the selection unit 26c receives input of the video signal to be output to the television 7 from the storage unit 17 to the first interface. Switch to 12. As a result, the frames Fn and Fn + 1 input from the first interface 12 are sequentially output from the relay device 20 to the television 7. Further, the storage control unit 26b writes the frames Fn and Fn + 1 alternately in order in the first storage area 17a and the second storage area 17b of the storage unit 17 (T5 to T7).
  • FIG. 12 is a diagram for explaining an example of the operation of the relay device 20 according to the second embodiment.
  • the relay device 20 is a device that relays a video signal from the mobile terminal 6 to the television 7, and includes the housing 11 that detachably holds the mobile terminal 6, and the housing 11.
  • the mobile terminal 6 has a first application and a second application, and each of the first application and the second application outputs a video signal to the relay device 20.
  • the control unit 26 determines whether the video signal input from the first interface 12 is output by the first application or the second application, and a memory that controls writing and reading of the video signal to and from the storage unit 17.
  • the control unit 26 b includes a selection unit 26 c that outputs at least one of a video signal input from the first interface 12 and a video signal read from the storage unit 17 to the television 7 via the second interface 13.
  • the storage control unit 26b receives the video signal input from the first interface 12.
  • the selection unit 26c outputs the video signal input from the first interface 12.
  • the storage control unit 26b reads the video signal from the storage unit 17, and ( ii) The selection unit 26c outputs the video signal read from the storage unit 17.
  • the video signal is output from the second application while the moving image content of the first application is displayed on the screen 7 a of the television 7, the user of the mobile terminal 6 can use the screen 6 a of the mobile terminal 6.
  • the video signal of the second application can be confirmed. Furthermore, since the frame of the moving image content is displayed on the screen 7a of the television 7, it is possible to suppress discomfort to viewers other than the user.
  • Embodiment 3 Next, Embodiment 3 will be described.
  • the video signal input from the first interface is a video signal output by the second application
  • the video signal is superimposed on the video signal read from the storage unit 17 and output. This is mainly different from the second embodiment.
  • the third embodiment will be specifically described below with reference to FIGS. 13 to 16, focusing on the differences from the second embodiment.
  • FIG. 13 is a functional block diagram of the relay device 30 according to the third embodiment.
  • the relay device 30 includes a first interface 12, a second interface 13, a third interface 14, a control unit 36, and a storage unit 17 as functional components.
  • the control unit 36 includes a determination unit 26a, a storage control unit 26b, and a selection unit 36c.
  • the selection unit 36 c outputs at least one of the video signal input from the first interface 12 and the video signal read from the storage unit 17 to the television 7 via the second interface 13.
  • the selection unit 36c outputs the video signal input from the first interface 12 alone to the television 7, or converts the video signal input from the first interface 12 into a video signal read from the storage unit 17. Superimpose and output.
  • the selection unit 36c when it is determined that the video signal input from the first interface 12 is a video signal output by the first application, the selection unit 36c outputs the video signal input from the first interface 12. To do. On the other hand, when it is determined that the video signal input from the first interface 12 is a video signal output by the first application, the selection unit 36 c receives the video signal input from the first interface 12 from the storage unit 17. It is superimposed on the read video signal and output. For example, the selection unit 36c reduces and rotates the frame of the video signal output by the second application, and superimposes the reduced and rotated frame on a predetermined area of the frame read from the storage unit 17.
  • FIG. 14 is a communication sequence diagram illustrating an example of the operation of the relay device 30 according to the third embodiment.
  • the selection unit 36c processes the image of the video signal input from the first interface 12. Then, the selection unit 36c superimposes the processed image on the frame read from the storage unit 17 (S50), and outputs the superimposed frame to the television 7 as a superimposed video signal (S51). That is, the video content read from the storage unit 17 and the video content output from the telephone application are simultaneously displayed on the screen 7a of the television 7 (S52).
  • FIG. 15 is a timing chart illustrating an example of the operation of the relay device 30 according to the third embodiment.
  • the time flows from left to right
  • the characters in the hexagonal horizontal bar represent the action or state
  • the length of the horizontal bar represents the time of the action or state. ing.
  • the output video signal bar 306 indicates a frame of the video signal transmitted from the relay device 30 to the television 7 via the second interface 13.
  • a frame F2 + F_TEL in which the frame F_TEL is superimposed on the frame F2 is output, and then the frames Fn and Fn + 1 are output in order.
  • FIG. 16 is a diagram for explaining an example of the operation of the relay device 30 according to the third embodiment.
  • the video of the telephone application is superimposed on the frame read from the storage unit 17 of the relay device 30 and output to the television 7.
  • the screen 7a of the television 7 continues to display the frame (still image) that was displayed immediately before the video signal output source was switched from the video playback app to the phone app, and the phone 7 was called in a partial area of the frame.
  • the app video is displayed.
  • the selection unit 36c when it is determined that the video signal input from the first interface 12 is a video signal output by the second application, the selection unit 36c receives the input from the first interface 12. The video signal to be superposed on the video signal read from the storage unit 17 is output.
  • the video signal is output from the second application while the moving image content of the first application is displayed on the screen 7 a of the television 7, the user of the mobile terminal 6 performs the second operation on the screen 7 a of the television 7.
  • the video signal of the application can be easily confirmed. Furthermore, since the frame of the moving image content is also displayed on the screen 7a of the television 7, it is possible to suppress discomfort to other viewers other than the user.
  • FIG. 17 is a diagram for explaining the operation of the relay device 40 according to another embodiment.
  • the mobile terminal 6 is removed from the relay device 40 after the video signal is output by the telephone application.
  • the relay device 40 can output the frame read from the storage unit 17 to the television 7.
  • the relay device 40 was displayed on the screen 7a of the television 7 just before the video signal output source was switched from the video playback app to the phone app even after the mobile terminal 6 was removed from the relay device 40.
  • the frame (still image) can be continuously displayed.
  • the relay device 40 Even if the user of the portable terminal 6 removes the portable terminal 6 from the relay device 40 after confirming the notification information of the telephone application on the screen 6a of the portable terminal 6 or the screen 7a of the television 7, the relay device 40 The video (frame) of the video playback application can be displayed on the screen 7 a of the television 7. Therefore, it is possible to suppress discomfort to other viewers other than the user.
  • the storage unit is included in the relay device, but is not limited thereto.
  • the storage unit may be included in an external storage device connected to the relay device. Even in this case, the same effects as those of the above embodiments can be obtained by controlling the writing and reading of video signals in the external storage device as in the above embodiments.
  • the remote controller 5 transmits an infrared command, but may transmit a command using radio waves such as Wi-Fi if the command is a wireless command.
  • the third interface 14 may include an antenna for receiving a command by radio waves such as Wi-Fi, a receiving circuit, and the like.
  • the second interface 13 is an interface that transmits a video signal by wire such as HDMI (registered trademark).
  • the second interface 13 is an interface that transmits a video signal by wireless such as Wi-Fi. May be.
  • the second interface 13 may include an antenna, a transmission / reception circuit, and the like for transmitting a video signal wirelessly such as Wi-Fi.
  • the case where the video signal is relayed from the mobile terminal 6 to the television 7 has been described.
  • the audio signal may be relayed together with the video signal.
  • the television 7 may include a speaker (not shown) that outputs sound based on the acoustic signal.
  • the first application and the second application are a moving image reproduction application and a telephone application, respectively.
  • the present invention is not limited to this.
  • the second application may be an application for SNS (Social Networking Service).
  • the two storage areas of the storage unit 17 are overwritten in units of frames.
  • the present invention is not limited to this.
  • the two storage areas may be overwritten in units of a predetermined number of frames.
  • the selection unit 16c may sequentially output a predetermined number of frames, or a predetermined number of frames. Only one of them may be output.
  • the external display device is not limited to a television.
  • the external display device may be a display display.
  • the present invention can be used as a desktop relay device that relays a video signal output from a mobile terminal to a display device, for example, as a cradle for a smartphone or tablet computer.

Abstract

A control unit (16) for a relay device (10) comprises: a detection unit (16a) that detects connection and disconnection of a mobile terminal (6) to and from a first interface (12); a storage control unit (16b); and a selection unit (16c). When connection of the mobile terminal (6) to the first interface (12) is detected: (i) the storage control unit (16b) writes video signals input from the first interface (12), to the storage unit (17); (ii) and the selection unit (16c) outputs video signals input from the first interface (12). On the other hand, when mobile terminal (6) disconnection from the first interface (12) is detected: (i) the storage control unit (16b) reads video signals from the storage unit (17); and (ii) the selection unit (16c) outputs video signals read from the storage unit (17).

Description

中継装置Relay device
　本発明は、映像信号を中継する中継装置に関し、特に、携帯端末から外部表示装置に映像信号を中継する卓上型の中継装置に関する。 The present invention relates to a relay device that relays a video signal, and more particularly to a desktop relay device that relays a video signal from a portable terminal to an external display device.
　携帯端末に表示されているコンテンツ（ストリーミング映像等）を、大画面を有するテレビジョン（以下、テレビジョンを単に「テレビ」ともいう）によって高画質で見たいという要望がある。このような要望に対して、従来、様々な技術が提案されている（例えば、特許文献１参照）。 There is a demand to view content (streaming video etc.) displayed on a mobile terminal with high image quality on a television having a large screen (hereinafter, the television is also simply referred to as “TV”). Conventionally, various techniques have been proposed for such a demand (see, for example, Patent Document 1).
　特許文献１には、端末装置が外部表示装置に接続されたときに、端末装置のアプリケーションが出力する画像データを外部表示装置に表示させるための技術が開示されている。 Patent Document 1 discloses a technique for displaying image data output by an application of a terminal device on the external display device when the terminal device is connected to the external display device.
特開２０１１－４１０２６号公報JP 2011-41026 A
　携帯端末に表示される動画コンテンツをテレビで表示しているときに、携帯端末からの映像信号の出力を中断せざる得ない場合がある。このような場合に、特許文献１の技術では、テレビの画面から画像の表示が消えてしまうことで、動画コンテンツの雰囲気を台無しにし、視聴者に不快感を与えてしまう場合がある。 When outputting video content displayed on a mobile terminal on a TV, the output of the video signal from the mobile terminal may have to be interrupted. In such a case, in the technique of Patent Document 1, the display of the image disappears from the screen of the television, so that the atmosphere of the moving image content is ruined and the viewer may feel uncomfortable.
　そこで、本発明は、携帯端末に表示される動画コンテンツをテレビでも表示する場合に、携帯端末からの映像信号の出力の中断による悪影響を抑制することができる中継装置を提供することを目的とする。 In view of the above, an object of the present invention is to provide a relay device capable of suppressing adverse effects caused by interruption of output of a video signal from a mobile terminal when moving image content displayed on the mobile terminal is also displayed on a television. .
　本発明の一形態に係る中継装置は、携帯端末から外部表示装置に映像信号を中継する中継装置であって、前記携帯端末を着脱可能に保持する筐体と、前記筐体に設けられ、前記筐体に保持された前記携帯端末に接続される第１インタフェースと、前記筐体に設けられ、前記外部表示装置に接続される第２インタフェースと、前記筐体に収容された制御部と、を備え、前記制御部は、前記第１インタフェースへの前記携帯端末の接続及び非接続を検出する検出部と、記憶部に対する映像信号の書き込み及び読み出しを制御する記憶制御部と、前記第１インタフェースから入力する映像信号及び前記記憶部から読み出される映像信号の少なくとも一方を、前記第２インタフェースを介して前記外部表示装置に出力する選択部と、を備え、前記第１インタフェースへの前記携帯端末の接続が検出されている場合には、（i）前記記憶制御部は、前記第１インタフェースから入力した映像信号を前記記憶部に書き込み、（ii）前記選択部は、前記第１インタフェースから入力した前記映像信号を出力し、前記第１インタフェースへの前記携帯端末の非接続が検出されている場合には、（i）前記記憶制御部は、前記記憶部から映像信号を読み出し、（ii）前記選択部は、前記記憶部から読み出された前記映像信号を出力する。 A relay device according to an aspect of the present invention is a relay device that relays a video signal from a mobile terminal to an external display device, and is provided in the housing that detachably holds the mobile terminal, A first interface connected to the portable terminal held in the housing, a second interface provided in the housing and connected to the external display device, and a control unit housed in the housing. The control unit includes: a detection unit that detects connection and disconnection of the mobile terminal to and from the first interface; a storage control unit that controls writing and reading of video signals to and from the storage unit; and the first interface A selection unit that outputs at least one of an input video signal and a video signal read from the storage unit to the external display device via the second interface; When the connection of the portable terminal to the interface is detected, (i) the storage control unit writes the video signal input from the first interface to the storage unit, and (ii) the selection unit includes: When the video signal input from the first interface is output and disconnection of the portable terminal to the first interface is detected, (i) the storage control unit receives the video signal from the storage unit (Ii) The selection unit outputs the video signal read from the storage unit.
　また、本発明の他の一態様に係る中継装置は、携帯端末から外部表示装置に映像信号を中継する中継装置であって、前記携帯端末を着脱可能に保持する筐体と、前記筐体に設けられ、前記筐体に保持された前記携帯端末に接続される第１インタフェースと、前記筐体に設けられ、前記外部表示装置に接続される第２インタフェースと、前記筐体に収容された制御部と、を備え、前記携帯端末は、第１アプリケーション及び第２アプリケーションを有し、前記第１アプリケーション及び前記第２アプリケーションの各々は、映像信号を前記中継装置に出力し、前記制御部は、前記第１インタフェースから入力する映像信号が前記第１アプリケーション及び前記第２アプリケーションのどちらにより出力されたかを判定する判定部と、記憶部に対する映像信号の書き込み及び読み出しを制御する記憶制御部と、前記第１インタフェースから入力する映像信号及び前記記憶部から読み出される映像信号の少なくとも一方を、前記第２インタフェースを介して前記外部表示装置に出力する選択部と、を備え、前記第１インタフェースから入力する映像信号が前記第１アプリケーションにより出力された映像信号であると判定された場合には、（i）前記記憶制御部は、前記第１インタフェースから入力した映像信号を前記記憶部に書き込み、（ii）前記選択部は、前記第１インタフェースから入力した映像信号を出力し、前記第１インタフェースから入力する映像信号が前記第２アプリケーションにより出力された映像信号であると判定された場合には、（i）前記記憶制御部は、前記記憶部から映像信号を読み出し、（ii）前記選択部は、前記記憶部から読み出された映像信号を出力する。 A relay device according to another aspect of the present invention is a relay device that relays a video signal from a mobile terminal to an external display device, the housing holding the mobile terminal in a detachable manner, and the housing A first interface provided to be connected to the portable terminal held by the casing; a second interface provided to the casing and connected to the external display device; and a control housed in the casing. The portable terminal has a first application and a second application, each of the first application and the second application outputs a video signal to the relay device, and the control unit includes: A determination unit for determining whether the video signal input from the first interface is output by the first application or the second application; and a storage unit A storage control unit that controls writing and reading of a video signal to be transmitted, and at least one of a video signal input from the first interface and a video signal read from the storage unit to the external display device via the second interface. A selection unit for outputting, and when the video signal input from the first interface is determined to be a video signal output by the first application, (i) the storage control unit (Ii) the selection unit outputs the video signal input from the first interface, and the video signal input from the first interface is output by the second application; If it is determined that the video signal is output, (i) the storage control unit It reads Luo video signal, (ii) the selection unit outputs the video signal read from the storage unit.
　本発明により、携帯端末に表示される動画コンテンツをテレビでも表示する場合に、携帯端末からの映像信号の出力の中断による悪影響を抑制することができる。 According to the present invention, when moving image content displayed on a mobile terminal is also displayed on a television, adverse effects due to interruption of the output of a video signal from the mobile terminal can be suppressed.
図１は、実施の形態１に係る中継装置の使用例を示す図である。FIG. 1 is a diagram illustrating a usage example of the relay device according to the first embodiment. 図２Ａは、実施の形態１に係る中継装置の斜視図である。2A is a perspective view of the relay device according to Embodiment 1. FIG. 図２Ｂは、実施の形態１に係る中継装置の斜視図である。2B is a perspective view of the relay device according to Embodiment 1. FIG. 図３は、実施の形態１に係る中継装置の機能ブロック図である。FIG. 3 is a functional block diagram of the relay apparatus according to the first embodiment. 図４は、実施の形態１に係る中継装置の記憶部の内部構成を示す機能ブロック図である。FIG. 4 is a functional block diagram illustrating an internal configuration of the storage unit of the relay apparatus according to the first embodiment. 図５は、実施の形態１に係る中継装置の動作の一例を示す通信シーケンス図である。FIG. 5 is a communication sequence diagram illustrating an example of the operation of the relay device according to the first embodiment. 図６は、実施の形態１に係る中継装置の動作の一例を示すタイミングチャートである。FIG. 6 is a timing chart illustrating an example of the operation of the relay device according to the first embodiment. 図７は、実施の形態１に係る中継装置の動作の一例を説明するための図である。FIG. 7 is a diagram for explaining an example of the operation of the relay device according to the first embodiment. 図８は、実施の形態１に係る中継装置の動作の一例を説明するための図である。FIG. 8 is a diagram for explaining an example of the operation of the relay apparatus according to the first embodiment. 図９は、実施の形態２に係る中継装置の機能ブロック図である。FIG. 9 is a functional block diagram of the relay device according to the second embodiment. 図１０は、実施の形態２に係る中継装置の動作の一例を示す通信シーケンス図である。FIG. 10 is a communication sequence diagram illustrating an example of the operation of the relay device according to the second embodiment. 図１１は、実施の形態２に係る中継装置の動作の一例を示すタイミングチャートである。FIG. 11 is a timing chart illustrating an example of the operation of the relay device according to the second embodiment. 図１２は、実施の形態２に係る中継装置の動作の一例を説明するための図である。FIG. 12 is a diagram for explaining an example of the operation of the relay device according to the second embodiment. 図１３は、実施の形態３に係る中継装置の機能ブロック図である。FIG. 13 is a functional block diagram of the relay apparatus according to the third embodiment. 図１４は、実施の形態３に係る中継装置の動作の一例を示す通信シーケンス図である。FIG. 14 is a communication sequence diagram illustrating an example of the operation of the relay device according to the third embodiment. 図１５は、実施の形態３に係る中継装置の動作の一例を示すタイミングチャートである。FIG. 15 is a timing chart illustrating an example of the operation of the relay device according to the third embodiment. 図１６は、実施の形態３に係る中継装置の動作の一例を説明するための図である。FIG. 16 is a diagram for explaining an example of the operation of the relay device according to the third embodiment. 図１７は、他の実施の形態に係る中継装置の動作の一例を説明するための図である。FIG. 17 is a diagram for explaining an example of the operation of the relay device according to another embodiment.
　以下、本発明の実施の形態について、図面を用いて詳細に説明する。なお、以下で説明する実施の形態は、いずれも本発明の一具体例を示すものである。以下の実施の形態で示される数値、形状、材料、構成要素、構成要素の配置位置及び接続形態、使用手順、通信手順等は、一例であり、本発明を限定する主旨ではない。また、以下の実施の形態における構成要素のうち、本発明の最上位概念を示す独立請求項に記載されていない構成要素については、任意の構成要素として説明される。また、各図は、必ずしも厳密に図示したものではない。各図において、実質的に同一の構成については同一の符号を付し、重複する説明は省略又は簡略化する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that each of the embodiments described below shows a specific example of the present invention. Numerical values, shapes, materials, components, arrangement positions and connection forms of components, usage procedures, communication procedures, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. In addition, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept of the present invention are described as optional constituent elements. Also, the drawings are not necessarily shown strictly. In each figure, substantially the same configuration is denoted by the same reference numeral, and redundant description is omitted or simplified.
　（実施の形態１）
　［中継装置の外観］
　まず、中継装置の外観について、図１、図２Ａ及び図２Ｂを参照しながら具体的に説明する。 (Embodiment 1)
[Appearance of relay device]
First, the external appearance of the relay device will be specifically described with reference to FIGS. 1, 2A and 2B.
　図１は、実施の形態１に係る中継装置１０の使用例を示す図である。図２Ａ及び図２Ｂは、実施の形態１に係る中継装置１０の斜視図である。なお、図１には、中継装置１０と関連する周辺装置（リモコン（リモートコントローラ）５、携帯端末６、テレビ７）も合わせて図示されている。 FIG. 1 is a diagram illustrating a usage example of the relay device 10 according to the first embodiment. 2A and 2B are perspective views of relay device 10 according to Embodiment 1. FIG. 1 also shows peripheral devices (remote controller (remote controller) 5, portable terminal 6, television 7) related to the relay device 10. FIG.
　図１、図２Ａ及び図２Ｂにおいて、Ｘ軸は、中継装置１０に保持された携帯端末６の画面６ａの水平方向に延びる軸である。Ｚ軸は、中継装置１０が水平面に載置されたときに鉛直方向に延びる軸である。Ｙ軸は、Ｘ軸及びＺ軸に直交する軸である。なお、Ｘ軸の正の向き及び負の向きを、それぞれ、右及び左という。Ｙ軸の正の向き及び負の向きを、それぞれ、後及び前という。Ｚ軸方向の正の向き及び負の向きを、それぞれ、上及び下という。 1, 2 </ b> A, and 2 </ b> B, the X axis is an axis extending in the horizontal direction of the screen 6 a of the mobile terminal 6 held by the relay device 10. The Z axis is an axis extending in the vertical direction when the relay device 10 is placed on a horizontal plane. The Y axis is an axis orthogonal to the X axis and the Z axis. The positive direction and negative direction of the X axis are referred to as right and left, respectively. The positive direction and negative direction of the Y axis are referred to as rear and front, respectively. The positive direction and negative direction in the Z-axis direction are referred to as “up” and “down”, respectively.
　リモコン５は、中継装置１０に対して無線でコマンドを送信する遠隔操作機器である。例えば、リモコン５は、複数のボタンを有し、押下されたボタンに応じた無線信号（例えば赤外線信号）を送信する。また例えば、リモコン５は、加速度センサを有し、上下左右に加速度を生じるようにリモコン５を振るような動作に応じた無線信号を送信してもよい。 The remote controller 5 is a remote operation device that transmits a command to the relay device 10 wirelessly. For example, the remote controller 5 has a plurality of buttons and transmits a radio signal (for example, an infrared signal) corresponding to the pressed button. Further, for example, the remote controller 5 may include an acceleration sensor, and may transmit a radio signal corresponding to an operation of shaking the remote controller 5 so as to generate acceleration in the vertical and horizontal directions.
　携帯端末６は、長方形状の画面６ａを有する携帯情報端末である。例えば、携帯端末６は、インターネットや電話網に接続して通信したり、様々なアプリケーション（ソフトウェアプログラム）を実行したりするスマートフォンやタブレットコンピュータ等である。なお、以下において、アプリケーションをアプリと省略表記することもある。 The portable terminal 6 is a portable information terminal having a rectangular screen 6a. For example, the mobile terminal 6 is a smartphone or a tablet computer that communicates by connecting to the Internet or a telephone network, or that executes various applications (software programs). In the following, an application may be abbreviated as an application.
　テレビ７は、中継装置１０から出力される映像信号を表示する画面７ａを有する外部表示装置の一例であり、例えば、４Ｋテレビ、８Ｋテレビ等である。 The television 7 is an example of an external display device having a screen 7a that displays a video signal output from the relay device 10, and is, for example, a 4K television, an 8K television, or the like.
　中継装置１０は、携帯端末６を保持する卓上型の装置（いわゆるクレードル又はドッキングステーション）である。中継装置１０は、長方形状の画面６ａを有する携帯端末６から出力される映像信号をテレビ７に中継する。 The relay device 10 is a desktop device (so-called cradle or docking station) that holds the mobile terminal 6. The relay device 10 relays the video signal output from the mobile terminal 6 having the rectangular screen 6 a to the television 7.
　図２Ａ及び図２Ｂに示すように、中継装置１０は、筐体１１と、第１インタフェース１２と、第２インタフェース１３と、第３インタフェース１４と、電源端子１５と、を備える。 As shown in FIGS. 2A and 2B, the relay device 10 includes a housing 11, a first interface 12, a second interface 13, a third interface 14, and a power supply terminal 15.
　筐体１１は、略三角柱形状を有し、三角柱の一側面に相当する前面に携帯端末６を保持するための保持部１１ａを有する。筐体１１は、例えば、成型加工された樹脂で構成され、筐体１１内には、制御部（図示せず）が収納されている。 The housing 11 has a substantially triangular prism shape, and has a holding portion 11a for holding the mobile terminal 6 on the front surface corresponding to one side surface of the triangular prism. The casing 11 is made of, for example, molded resin, and a control unit (not shown) is accommodated in the casing 11.
　第１インタフェース１２は、筐体１１に設けられており、携帯端末６とケーブルを介さずに直接接続される。ここでは、第１インタフェース１２は、携帯端末６が有する充電及び通信用の専用コネクタ（例えば、ライトニングコネクタ、ＵＳＢ等）に直接差し込まれる接続端子を含む。中継装置１０は、第１インタフェース１２を介して、例えば電力を携帯端末６に供給する。また例えば、中継装置１０は、第１インタフェース１２を介して、携帯端末６にデータを送信したり、携帯端末６からデータを受信したりする。 The first interface 12 is provided in the housing 11 and is directly connected to the portable terminal 6 without a cable. Here, the first interface 12 includes a connection terminal directly plugged into a dedicated connector for charging and communication (for example, a lightning connector, USB, etc.) of the mobile terminal 6. The relay device 10 supplies, for example, power to the mobile terminal 6 via the first interface 12. For example, the relay device 10 transmits data to the mobile terminal 6 or receives data from the mobile terminal 6 via the first interface 12.
　第２インタフェース１３は、筐体１１に設けられており、テレビ７に接続される。具体的には、第２インタフェースは、映像信号を伝送するための通信インタフェース（例えば、ＨＤＭＩ（登録商標）；Ｈｉｇｈ－Ｄｅｆｉｎｉｔｉｏｎ　Ｍｕｌｔｉｍｅｄｉａ　Ｉｎｔｅｒｆａｃｅ）である。ここでは、第２インタフェース１３は、ケーブル４が接続される接続端子を含む。 The second interface 13 is provided in the housing 11 and connected to the television 7. Specifically, the second interface is a communication interface for transmitting a video signal (for example, HDMI (registered trademark); High-Definition Multimedia Interface). Here, the second interface 13 includes a connection terminal to which the cable 4 is connected.
　第３インタフェース１４は、リモコン５からコマンドを無線で受信する通信インタフェースである。例えば、第３インタフェース１４は、赤外線通信インタフェースである。 The third interface 14 is a communication interface that receives commands from the remote controller 5 wirelessly. For example, the third interface 14 is an infrared communication interface.
　電源端子１５は、ＡＣ－ＤＣアダプタ又はＡＣ電源ケーブル等の電源コード３が差し込まれるメス型のコネクタである。電源コード３は、商用電源に接続される。 The power terminal 15 is a female connector into which a power cord 3 such as an AC-DC adapter or an AC power cable is inserted. The power cord 3 is connected to a commercial power source.
　［中継装置の機能構成］
　次に、中継装置１０の機能構成について、図３及び図４を参照しながら具体的に説明する。図３は、実施の形態１に係る中継装置１０の機能ブロック図である。図４は、実施の形態１に係る中継装置１０の記憶部１７の内部構成を示すブロック図である。 [Functional configuration of relay device]
Next, the functional configuration of the relay apparatus 10 will be specifically described with reference to FIGS. 3 and 4. FIG. 3 is a functional block diagram of the relay device 10 according to the first embodiment. FIG. 4 is a block diagram illustrating an internal configuration of the storage unit 17 of the relay device 10 according to the first embodiment.
　図３に示すように、中継装置１０は、機能的な構成要素として、第１インタフェース１２と、第２インタフェース１３と、第３インタフェース１４と、制御部１６と、記憶部１７と、を備える。 As shown in FIG. 3, the relay apparatus 10 includes a first interface 12, a second interface 13, a third interface 14, a control unit 16, and a storage unit 17 as functional components.
　第１インタフェース１２は、筐体１１に保持された携帯端末６にケーブルを介さずに直接接続される。中継装置１０は、第１インタフェース１２を介して、携帯端末から映像信号を受信する。つまり、第１インタフェース１２から映像信号が中継装置１０に入力される。 The first interface 12 is directly connected to the mobile terminal 6 held in the housing 11 without a cable. The relay device 10 receives a video signal from the mobile terminal via the first interface 12. That is, a video signal is input from the first interface 12 to the relay device 10.
　第２インタフェース１３は、テレビ７に接続される。中継装置１０は、第２インタフェースを介して映像信号をテレビ７に出力する。 The second interface 13 is connected to the television 7. The relay device 10 outputs a video signal to the television 7 via the second interface.
　第３インタフェース１４は、リモコン５から無線で送信されてくるコマンドを受け付ける。例えば、第３インタフェース１４は、リモコン５から受信した赤外線信号を電気信号に変換し、当該電気信号を制御部１６に出力する。 The third interface 14 receives a command transmitted wirelessly from the remote controller 5. For example, the third interface 14 converts an infrared signal received from the remote controller 5 into an electrical signal and outputs the electrical signal to the control unit 16.
　制御部１６は、検出部１６ａと、記憶制御部１６ｂと、選択部１６ｃと、を備える。具体的には、制御部１６は、検出部１６ａ、記憶制御部１６ｂ及び選択部１６ｃに対応する１以上の専用の電子回路を備える。また例えば、制御部１６は、１以上の専用の電子回路の代わりに、プロセッサ（図示せず）と、ソフトウェアプログラム又はインストラクションが格納されたメモリ（図示せず）とを備えてもよい。この場合、ソフトウェアプログラム又はインストラクションが実行されたときに、プロセッサは、検出部１６ａ、記憶制御部１６ｂ及び選択部１６ｃとして機能する。 The control unit 16 includes a detection unit 16a, a storage control unit 16b, and a selection unit 16c. Specifically, the control unit 16 includes one or more dedicated electronic circuits corresponding to the detection unit 16a, the storage control unit 16b, and the selection unit 16c. Further, for example, the control unit 16 may include a processor (not shown) and a memory (not shown) in which a software program or an instruction is stored instead of one or more dedicated electronic circuits. In this case, when the software program or instruction is executed, the processor functions as the detection unit 16a, the storage control unit 16b, and the selection unit 16c.
　検出部１６ａは、第１インタフェース１２への携帯端末６の接続及び非接続を検出する。つまり、検出部１６ａは、第１インタフェース１２に携帯端末６が接続されているか否かを検出する。具体的には、検出部１６ａは、例えば、第１インタフェース１２の接続端子に含まれる所定のピンの電圧レベルを監視することにより接続及び非接続を検出する。また例えば、検出部１６ａは、第１インタフェース１２を介して携帯端末６から応答メッセージを受信できるか否かに基づいて接続及び非接続を検出してもよい。 The detecting unit 16a detects connection and disconnection of the mobile terminal 6 to the first interface 12. That is, the detection unit 16 a detects whether or not the mobile terminal 6 is connected to the first interface 12. Specifically, the detection unit 16a detects connection and disconnection by monitoring the voltage level of a predetermined pin included in the connection terminal of the first interface 12, for example. For example, the detection unit 16a may detect connection and non-connection based on whether or not a response message can be received from the mobile terminal 6 via the first interface 12.
　記憶制御部１６ｂは、記憶部１７に対する映像信号の書き込み及び読み出しを制御する。具体的には、第１インタフェース１２への携帯端末６の接続が検出されている場合には、記憶制御部１６ｂは、第１インタフェース１２から入力した映像信号を記憶部１７に書き込む。一方、第１インタフェース１２への携帯端末６の非接続が検出されている場合には、記憶制御部１６ｂは、記憶部１７から映像信号を読み出す。 The storage control unit 16b controls writing and reading of video signals to and from the storage unit 17. Specifically, when the connection of the portable terminal 6 to the first interface 12 is detected, the storage control unit 16 b writes the video signal input from the first interface 12 in the storage unit 17. On the other hand, when the disconnection of the mobile terminal 6 to the first interface 12 is detected, the storage control unit 16 b reads the video signal from the storage unit 17.
　つまり、記憶制御部１６ｂは、第１インタフェース１２への携帯端末６の接続及び非接続に応じて、記憶部１７に対する映像信号の書き込み及び読み出しを切り替える。つまり、記憶制御部１６ｂは、第１インタフェース１２への携帯端末６の接続が検出されている場合には、記憶制御部１６ｂは、記憶部１７から映像信号を読み出さずに、入力映像信号を記憶部１７に書き込む。また、第１インタフェース１２への携帯端末６の非接続が検出されている場合には、記憶制御部１６ｂは、入力映像信号を記憶部１７に書き込まずに、記憶部１７に格納された映像信号を読み出す。 That is, the storage control unit 16b switches between writing and reading of the video signal to and from the storage unit 17 according to the connection and disconnection of the mobile terminal 6 to the first interface 12. That is, when the connection of the portable terminal 6 to the first interface 12 is detected, the storage control unit 16b stores the input video signal without reading the video signal from the storage unit 17. Write to part 17. When the disconnection of the mobile terminal 6 to the first interface 12 is detected, the storage control unit 16 b does not write the input video signal to the storage unit 17 but stores the video signal stored in the storage unit 17. Is read.
　選択部１６ｃは、第１インタフェース１２から入力される映像信号及び記憶部１７から読み出される映像信号の少なくとも一方を、第２インタフェース１３を介してテレビ７に出力する。本実施の形態では、選択部１６ｃは、第１インタフェース１２から入力される映像信号及び記憶部１７から読み出される映像信号を選択的にテレビ７に出力する。具体的には、選択部１６ｃは、検出部１６ａによる検出結果に基づいて第１インタフェース１２及び記憶部１７のいずれかを選択する。そして、選択部１６ｃは、選択された第１インタフェース１２又は記憶部１７から選択部１６ｃに入力される映像信号を、第２インタフェース１３を介してテレビ７に出力する。つまり、選択部１６ｃは、検出部１６ａによる検出結果に基づいて、第１インタフェース１２及び記憶部１７の間で入力を切り替える。 The selection unit 16 c outputs at least one of the video signal input from the first interface 12 and the video signal read from the storage unit 17 to the television 7 via the second interface 13. In the present embodiment, the selection unit 16 c selectively outputs the video signal input from the first interface 12 and the video signal read from the storage unit 17 to the television 7. Specifically, the selection unit 16c selects either the first interface 12 or the storage unit 17 based on the detection result by the detection unit 16a. Then, the selection unit 16 c outputs the video signal input from the selected first interface 12 or storage unit 17 to the selection unit 16 c to the television 7 via the second interface 13. That is, the selection unit 16c switches the input between the first interface 12 and the storage unit 17 based on the detection result by the detection unit 16a.
　より具体的には、第１インタフェース１２への携帯端末６の接続が検出されている場合には、選択部１６ｃは、第１インタフェース１２から入力した映像信号を出力する。このとき、記憶部１７に格納されている映像信号は出力されない。一方、第１インタフェース１２への携帯端末６の非接続が検出されている場合には、選択部１６ｃは、記憶部１７から読み出された映像信号を出力する。 More specifically, when the connection of the mobile terminal 6 to the first interface 12 is detected, the selection unit 16c outputs the video signal input from the first interface 12. At this time, the video signal stored in the storage unit 17 is not output. On the other hand, when the disconnection of the mobile terminal 6 to the first interface 12 is detected, the selection unit 16 c outputs the video signal read from the storage unit 17.
　記憶部１７は、例えば半導体メモリであり、映像信号（つまり、映像信号に含まれるフレーム）を記憶する。ここで、記憶部１７の内部構成について、図４を参照しながら具体的に説明する。 The storage unit 17 is, for example, a semiconductor memory, and stores a video signal (that is, a frame included in the video signal). Here, the internal configuration of the storage unit 17 will be specifically described with reference to FIG.
　図４は、実施の形態１に係る中継装置１０の記憶部１７の内部構成を示す機能ブロック図である。記憶部１７は、記憶制御部１６ｂにより書き込み及び読み出しが制御される。記憶部１７は、少なくとも２つの記憶領域（ここでは、第１記憶領域１７ａ及び第２記憶領域１７ｂ）を有する。 FIG. 4 is a functional block diagram showing an internal configuration of the storage unit 17 of the relay device 10 according to the first embodiment. Writing and reading of the storage unit 17 is controlled by the storage control unit 16b. The storage unit 17 has at least two storage areas (here, the first storage area 17a and the second storage area 17b).
　第１記憶領域１７ａ及び第２記憶領域１７ｂの各々は、少なくとも１つのフレームを格納可能なサイズを有する。フレームとは、動画を構成する複数の画像（静止画像）の１つを意味する。 Each of the first storage area 17a and the second storage area 17b has a size capable of storing at least one frame. A frame means one of a plurality of images (still images) constituting a moving image.
　記憶制御部１６ｂは、第１インタフェース１２への携帯端末６の接続が検出されている場合には、第１インタフェース１２から入力した映像信号に含まれる複数のフレームを第１記憶領域１７ａ及び第２記憶領域１７ｂに交互に上書きする。また、記憶制御部１６ｂは、第１記憶領域１７ａ及び第２記憶領域１７ｂの一方にフレームが上書きされているときに第１インタフェース１２への携帯端末６の非接続が検出された場合には、第１記憶領域１７ａ及び第２記憶領域１７ｂの他方からフレームを読み出す。 When the connection of the portable terminal 6 to the first interface 12 is detected, the storage control unit 16b displays a plurality of frames included in the video signal input from the first interface 12 as the first storage area 17a and the second storage area 17a. The storage area 17b is overwritten alternately. In addition, when the storage control unit 16b detects that the mobile terminal 6 is disconnected from the first interface 12 when a frame is overwritten on one of the first storage area 17a and the second storage area 17b, A frame is read from the other of the first storage area 17a and the second storage area 17b.
　[中継装置の動作]
　次に、以上のように構成された本実施の形態に係る中継装置１０の動作について図５～図８を参照しながら具体的に説明する。 [Repeater operation]
Next, the operation of the relay apparatus 10 according to the present embodiment configured as described above will be specifically described with reference to FIGS.
　図５は、実施の形態１に係る中継装置１０の動作の一例を示す通信シーケンス図である。ここでは、リモコン５、携帯端末６、中継装置１０及びテレビ７間でのやりとりの一例が示されている。 FIG. 5 is a communication sequence diagram illustrating an example of the operation of the relay device 10 according to the first embodiment. Here, an example of the exchange among the remote controller 5, the portable terminal 6, the relay device 10, and the television 7 is shown.
　まず、中継装置１０の制御部１６は、第２インタフェース１３がケーブル４を介してテレビ７と接続されたことを検知すると、第２インタフェース１３を介して、テレビ７の画面サイズを含む機器情報をテレビ７から取得する（Ｓ１０）。 First, when the control unit 16 of the relay apparatus 10 detects that the second interface 13 is connected to the television 7 via the cable 4, device information including the screen size of the television 7 is obtained via the second interface 13. Obtained from the television 7 (S10).
　その後、リモコン５は、操作者の操作に応じて（Ｓ１１）、赤外線によるコマンドを中継装置１０に向けて送信する（Ｓ１２）。 Thereafter, the remote controller 5 transmits an infrared command to the relay device 10 according to the operation of the operator (S11) (S12).
　中継装置１０の制御部１６は、第３インタフェース１４が受け付けたコマンドを、携帯端末６が解読できるコマンドに変換し、変換されたコマンドを、第１インタフェース１２を介して携帯端末６に出力する（Ｓ１３）。ここで携帯端末６に出力されるコマンドは、携帯端末６のアプリを操作するためのコマンドである。具体的には、コマンドは、映像（例えばストリーミング映像等）を操作するコマンドである。映像を操作するコマンドは、例えば、映像を選択、再生、早送り再生、逆方向再生、停止若しくは一時停止するコマンド、又は、それらの任意の組み合わせである。 The control unit 16 of the relay device 10 converts the command received by the third interface 14 into a command that can be decoded by the mobile terminal 6 and outputs the converted command to the mobile terminal 6 via the first interface 12 ( S13). Here, the command output to the mobile terminal 6 is a command for operating the application of the mobile terminal 6. Specifically, the command is a command for operating a video (for example, a streaming video or the like). The command for manipulating the video is, for example, a command to select, play, fast forward playback, reverse playback, stop or pause, or any combination thereof.
　中継装置１０からコマンドを受信した携帯端末６は、受信したコマンドに応じて、映像信号を中継装置１０に出力する（Ｓ１４）。 The mobile terminal 6 that has received the command from the relay device 10 outputs a video signal to the relay device 10 in accordance with the received command (S14).
　中継装置１０は、携帯端末６から第１インタフェース１２を介して受信した映像信号をテレビ７に出力する（Ｓ１５）。さらに、記憶制御部１６ｂは、第１インタフェース１２から入力される映像信号の記憶部１７への保存を開始する（Ｓ１６）。 The relay device 10 outputs the video signal received from the mobile terminal 6 via the first interface 12 to the television 7 (S15). Further, the storage control unit 16b starts saving the video signal input from the first interface 12 in the storage unit 17 (S16).
　テレビ７は、入力した映像信号を再生して映像コンテンツを画面７ａに表示する（Ｓ１７）。これにより、携帯端末６の小さな画面６ａに表示されているコンテンツ（ストリーミング映像等）が、テレビ７の大きな画面７ａにも表示される。つまり、携帯端末６の画面６ａ及びテレビ７の画面７ａの両方に同じ内容の映像コンテンツが表示される。 The television 7 reproduces the input video signal and displays the video content on the screen 7a (S17). As a result, the content (streaming video or the like) displayed on the small screen 6 a of the mobile terminal 6 is also displayed on the large screen 7 a of the television 7. That is, the same video content is displayed on both the screen 6 a of the mobile terminal 6 and the screen 7 a of the television 7.
　ここで、中継装置１０が携帯端末６からテレビ７に映像信号を中継しているときに、携帯端末６が中継装置１０から取り外される場合の動作について説明する。 Here, the operation when the mobile terminal 6 is detached from the relay device 10 when the relay device 10 relays the video signal from the mobile terminal 6 to the television 7 will be described.
　携帯端末６と中継装置１０との接続が解除される（Ｓ２０）と、中継装置１０の検出部１６ａは、携帯端末６の非接続を検出する（Ｓ２１）。中継装置１０の記憶制御部１６ｂは、第１インタフェース１２から入力される映像信号の記憶部１７への保存を停止する（Ｓ２２）。さらに、記憶制御部１６ｂは、記憶部１７に保存されている映像信号（フレーム）を読み出す。選択部１６ｃは、テレビ７に出力するための映像信号の入力を、第１インタフェース１２から記憶部１７に切り替える（Ｓ２３）。その結果、記憶部１７から読み出されたフレームが映像信号としてテレビ７に出力される（Ｓ２４）。テレビ７は、入力した映像信号に基づいて映像コンテンツを画面７ａに表示する（Ｓ２５）。つまり、テレビ７の画面７ａには、記憶部１７から読み出された１つのフレームが表示される。言い換えると、テレビ７の画面７ａには、動画コンテンツが一時停止の状態で表示される。 When the connection between the mobile terminal 6 and the relay device 10 is released (S20), the detection unit 16a of the relay device 10 detects the disconnection of the mobile terminal 6 (S21). The storage control unit 16b of the relay device 10 stops storing the video signal input from the first interface 12 in the storage unit 17 (S22). Further, the storage control unit 16b reads the video signal (frame) stored in the storage unit 17. The selection unit 16c switches the input of the video signal to be output to the television 7 from the first interface 12 to the storage unit 17 (S23). As a result, the frame read from the storage unit 17 is output to the television 7 as a video signal (S24). The television 7 displays the video content on the screen 7a based on the input video signal (S25). That is, one frame read from the storage unit 17 is displayed on the screen 7 a of the television 7. In other words, the moving image content is displayed in a paused state on the screen 7 a of the television 7.
　その後、携帯端末６と中継装置１０とが再接続される（Ｓ３０）と、中継装置１０の検出部１６ａは、携帯端末６の接続を検出する（Ｓ３１）。選択部１６ｃは、テレビ７に出力するための映像信号の入力を、記憶部１７から第１インタフェース１２に切り替える（Ｓ３２）。その結果、第１インタフェース１２から入力された映像信号が、第２インタフェース１３を介してテレビ７に出力される（Ｓ３３、Ｓ３４）。また、中継装置１０の記憶制御部１６ｂは、第１インタフェース１２から入力された映像信号の記憶部１７への保存を再開する（Ｓ３５）。テレビ７は、入力した映像信号に基づいて映像コンテンツを画面７ａに表示する（Ｓ３６）。つまり、携帯端末６の画面６ａ及びテレビ７の画面７ａの両方に同じ内容の映像コンテンツが表示される。 Thereafter, when the mobile terminal 6 and the relay device 10 are reconnected (S30), the detection unit 16a of the relay device 10 detects the connection of the mobile terminal 6 (S31). The selection unit 16c switches the input of the video signal to be output to the television 7 from the storage unit 17 to the first interface 12 (S32). As a result, the video signal input from the first interface 12 is output to the television 7 via the second interface 13 (S33, S34). Further, the storage control unit 16b of the relay device 10 resumes saving the video signal input from the first interface 12 in the storage unit 17 (S35). The television 7 displays the video content on the screen 7a based on the input video signal (S36). That is, the same video content is displayed on both the screen 6 a of the mobile terminal 6 and the screen 7 a of the television 7.
　次に、このような中継装置１０の動作を、タイミングチャートを用いて説明する。図６は、実施の形態１に係る中継装置１０の動作の一例を示すタイミングチャートである。図６では、時間が左から右へ流れており、六角形の水平バー内の文字がアクション又は状態を表しており、水平バーの長さがアクション又は状態の時間を表している。 Next, the operation of such a relay device 10 will be described using a timing chart. FIG. 6 is a timing chart illustrating an example of the operation of the relay device 10 according to the first embodiment. In FIG. 6, time flows from left to right, the characters in the hexagonal horizontal bar represent the action or state, and the length of the horizontal bar represents the time of the action or state.
　接続状態バー１００は、携帯端末６と中継装置１０との接続状態が「接続（ｃｏｎｎｅｃｔｅｄ）」及び「非接続（ｄｉｓｃｏｎｎｅｃｔｅｄ）」のどちらであるかを示す。ここでは、携帯端末６と中継装置１０との接続状態は、Ｔ４で「接続」から「非接続」に変化し、Ｔ５で「非接続」から「接続」に戻っている。 The connection status bar 100 indicates whether the connection status between the mobile terminal 6 and the relay device 10 is “connected” or “disconnected”. Here, the connection state between the mobile terminal 6 and the relay device 10 changes from “connected” to “not connected” at T4, and returns from “not connected” to “connected” at T5.
　入力映像信号バー１０１は、第１インタフェース１２を介して携帯端末６から中継装置１０に伝送される映像信号のフレームを示す。ここでは、フレームＦ１、Ｆ２、Ｆ３が順に中継装置１０に入力された後、Ｔ４でフレームＦ３の入力が中断される。その後、Ｔ５でフレームの入力が再開され、フレームＦｎ、Ｆｎ＋１が順に入力される。ｎは任意の自然数である。 The input video signal bar 101 indicates a frame of a video signal transmitted from the mobile terminal 6 to the relay device 10 via the first interface 12. Here, after the frames F1, F2, and F3 are sequentially input to the relay apparatus 10, the input of the frame F3 is interrupted at T4. Thereafter, frame input is resumed at T5, and frames Fn and Fn + 1 are sequentially input. n is an arbitrary natural number.
　記憶制御バー１０２は、記憶制御部１６ｂによる記憶部１７の動作を示す。ここでは、記憶部１７の動作は、Ｔ４で「書き込み（ｗｒｉｔｅ）」から「読み出し（ｒｅａｄ）」に変化し、Ｔ５で「読み出し」から「書き込み」に変化する。 The storage control bar 102 indicates the operation of the storage unit 17 by the storage control unit 16b. Here, the operation of the storage unit 17 changes from “write” to “read” at T4, and changes from “read” to “write” at T5.
　制御対象記憶領域バー１０３は、書き込み及び読み出しの対象となる記憶領域を示す。ここでは、Ｔ１～Ｔ７において、第１記憶領域１７ａ及び第２記憶領域１７ｂの間で対象記憶領域が切り替えられている。 The control target storage area bar 103 indicates a storage area to be written and read. Here, in T1 to T7, the target storage area is switched between the first storage area 17a and the second storage area 17b.
　第１記憶領域バー１０４は、第１記憶領域１７ａに格納されるフレームを示す。ここでは、フレームＦ１、Ｆ３、Ｆｎが順に第１記憶領域１７ａに上書きされている。例えば、Ｔ３にフレームＦ３の第１記憶領域１７ａへの上書きが開始され、結果的にフレームＦ１が第１記憶領域１７ａから削除される。 The first storage area bar 104 indicates a frame stored in the first storage area 17a. Here, the frames F1, F3, and Fn are overwritten in the first storage area 17a in order. For example, overwriting of the frame F3 to the first storage area 17a is started at T3, and as a result, the frame F1 is deleted from the first storage area 17a.
　第２記憶領域バー１０５は、第２記憶領域１７ｂに格納されるフレームを示す。ここでは、フレームＦ２、Ｆｎ＋１が順に第２記憶領域１７ｂに格納されている。例えば、Ｔ６からフレームＦｎ＋１の第２記憶領域１７ｂへの上書きが開始され、結果的にフレームＦ２が第２記憶領域１７ｂから削除される。 The second storage area bar 105 indicates a frame stored in the second storage area 17b. Here, frames F2 and Fn + 1 are stored in the second storage area 17b in order. For example, overwriting of the frame Fn + 1 to the second storage area 17b is started from T6, and as a result, the frame F2 is deleted from the second storage area 17b.
　出力映像信号バー１０６は、第２インタフェース１３を介して中継装置１０からテレビ７に伝送される映像信号のフレームを示す。ここでは、中継装置１０から、フレームＦ１～Ｆ３が順に出力された後に、再びフレームＦ２が出力され、その後、フレームＦｎ、Ｆｎ＋１が順に出力されている。 The output video signal bar 106 indicates a frame of a video signal transmitted from the relay apparatus 10 to the television 7 via the second interface 13. Here, after the frames F1 to F3 are sequentially output from the relay apparatus 10, the frame F2 is output again, and then the frames Fn and Fn + 1 are output in order.
　以上のように、中継装置１０と携帯端末６との接続状態が、「接続」である間（Ｔ１～Ｔ４）、第１インタフェース１２を介して入力されるフレームＦ１～Ｆ３が順にテレビ７に出力される。この間、記憶制御部１６ｂは、記憶部１７の第１記憶領域１７ａ及び第２記憶領域１７ｂに交互にフレームＦ１～Ｆ３を順に書き込む。 As described above, while the connection state between the relay device 10 and the portable terminal 6 is “connected” (T1 to T4), the frames F1 to F3 input via the first interface 12 are sequentially output to the television 7. Is done. During this time, the storage control unit 16b writes the frames F1 to F3 alternately in order to the first storage area 17a and the second storage area 17b of the storage unit 17.
　その後、中継装置１０と携帯端末６との接続状態が、「接続」から「非接続」に変化すると（Ｔ４）、記憶制御部１６ｂは、フレームＦ３を書き込み中の第１記憶領域１７ａとは逆の第２記憶領域１７ｂからフレームＦ２を読み出す。同時に、選択部１６ｃは、テレビ７に出力するための映像信号の入力を第１インタフェース１２から記憶部１７に切り替える。その結果、第２記憶領域１７ｂから読み出されたフレームＦ２が中継装置１０からテレビ７に継続的に出力される（Ｔ４～Ｔ５）。 Thereafter, when the connection state between the relay device 10 and the mobile terminal 6 changes from “connected” to “not connected” (T4), the storage control unit 16b is opposite to the first storage area 17a in which the frame F3 is being written. The frame F2 is read from the second storage area 17b. At the same time, the selection unit 16 c switches the input of the video signal to be output to the television 7 from the first interface 12 to the storage unit 17. As a result, the frame F2 read from the second storage area 17b is continuously output from the relay device 10 to the television 7 (T4 to T5).
　さらにその後、中継装置１０と携帯端末６との接続状態が、「非接続」から「接続」に変化すると（Ｔ５）、選択部１６ｃは、テレビ７に出力するための映像信号の入力を記憶部１７から第１インタフェース１２に切り替える。その結果、第１インタフェース１２から入力されたフレームＦｎ、Ｆｎ＋１が中継装置１０からテレビ７に順に出力される。また、記憶制御部１６ｂは、記憶部１７の第１記憶領域１７ａ及び第２記憶領域１７ｂに交互にフレームＦｎ、Ｆｎ＋１を順に書き込む（Ｔ５～Ｔ７）。 After that, when the connection state between the relay device 10 and the portable terminal 6 changes from “not connected” to “connected” (T5), the selection unit 16c stores the input of the video signal to be output to the television 7 as a storage unit Switch from 17 to the first interface 12. As a result, the frames Fn and Fn + 1 input from the first interface 12 are sequentially output from the relay device 10 to the television 7. In addition, the storage control unit 16b writes the frames Fn and Fn + 1 alternately in order in the first storage area 17a and the second storage area 17b of the storage unit 17 (T5 to T7).
　このような中継装置１０の動作を図７及び図８を用いてさらに説明する。図７及び図８は、実施の形態１に係る中継装置１０の動作の一例を説明するための図である。具体的には、図７は、携帯端末６が中継装置１０に取り付けられた状態（図６のＴ１～Ｔ４）を示す。また、図８は、携帯端末６が中継装置１０から取り外された状態（図６のＴ４～Ｔ５）を示す。 The operation of the relay device 10 will be further described with reference to FIGS. 7 and 8 are diagrams for explaining an example of the operation of the relay device 10 according to the first embodiment. Specifically, FIG. 7 shows a state where the mobile terminal 6 is attached to the relay device 10 (T1 to T4 in FIG. 6). FIG. 8 shows a state where the mobile terminal 6 is detached from the relay device 10 (T4 to T5 in FIG. 6).
　図７では、携帯端末６が中継装置１０に接続されているので、中継装置１０によって携帯端末６からテレビ７に映像信号が中継される。その結果、携帯端末６の画面６ａとテレビ７の画面７ａとの両方に同じ内容の映像コンテンツが表示されている。 In FIG. 7, since the mobile terminal 6 is connected to the relay device 10, the video signal is relayed from the mobile terminal 6 to the television 7 by the relay device 10. As a result, the same video content is displayed on both the screen 6 a of the mobile terminal 6 and the screen 7 a of the television 7.
　図８では、携帯端末６が中継装置１０に接続されていないので、中継装置１０の記憶部１７から読み出されたフレームがテレビ７に出力される。その結果、テレビ７の画面７ａには、携帯端末６が中継装置１０から取り外される直前に表示されていたフレーム（静止画像）が表示され続ける。 In FIG. 8, since the mobile terminal 6 is not connected to the relay device 10, the frame read from the storage unit 17 of the relay device 10 is output to the television 7. As a result, the frame (still image) displayed immediately before the mobile terminal 6 is detached from the relay device 10 is continuously displayed on the screen 7a of the television 7.
　［効果等］
　以上のように、本実施の形態に係る中継装置１０は、携帯端末６からテレビ７に映像信号を中継する装置であって、携帯端末６を着脱可能に保持する筐体１１と、筐体１１に設けられ、筐体１１に保持された携帯端末６にケーブルを介さずに直接接続される第１インタフェース１２と、筐体１１に設けられ、テレビ７に接続される第２インタフェース１３と、筐体１１に収容された制御部１６と、を備える。制御部１６は、第１インタフェース１２への携帯端末６の接続及び非接続を検出する検出部１６ａと、記憶部１７に対する映像信号の書き込み及び読み出しを制御する記憶制御部１６ｂと、第１インタフェース１２から入力する映像信号及び記憶部１７から読み出される映像信号の少なくとも一方を、第２インタフェース１３を介してテレビ７に出力する選択部１６ｃと、を備える。ここで、第１インタフェース１２への携帯端末６の接続が検出されている場合には、（i）記憶制御部１６ｂは、第１インタフェース１２から入力した映像信号を記憶部１７に書き込み、（ii）選択部１６ｃは、第１インタフェース１２から入力した映像信号を出力する。一方、第１インタフェース１２への携帯端末６の非接続が検出されている場合には、（i）記憶制御部１６ｂは、記憶部１７から映像信号を読み出し、（ii）選択部１６ｃは、記憶部１７から読み出された映像信号を出力する。 [Effects]
As described above, the relay device 10 according to the present embodiment is a device that relays a video signal from the mobile terminal 6 to the television 7, and includes the housing 11 that detachably holds the mobile terminal 6, and the housing 11. A first interface 12 directly connected to the portable terminal 6 held in the casing 11 without a cable, a second interface 13 provided in the casing 11 and connected to the television 7, and a casing. And a control unit 16 accommodated in the body 11. The control unit 16 includes a detection unit 16 a that detects connection and disconnection of the mobile terminal 6 to the first interface 12, a storage control unit 16 b that controls writing and reading of video signals to and from the storage unit 17, and the first interface 12. And a selection unit 16 c that outputs at least one of the video signal input from the storage unit 17 and the video signal read from the storage unit 17 to the television 7 via the second interface 13. Here, when the connection of the portable terminal 6 to the first interface 12 is detected, (i) the storage control unit 16b writes the video signal input from the first interface 12 to the storage unit 17, and (ii) ) The selection unit 16c outputs the video signal input from the first interface 12. On the other hand, when disconnection of the portable terminal 6 to the first interface 12 is detected, (i) the storage control unit 16b reads the video signal from the storage unit 17, and (ii) the selection unit 16c stores The video signal read from the unit 17 is output.
　これにより、中継装置１０は、携帯端末６を保持する筐体１１を備えることができるので、筐体１１に携帯端末６が保持された状態でテレビ７に携帯端末６が接続される。したがって、携帯端末６を操作する場合に、使用者は、中継装置１０から携帯端末６を取り外して携帯端末６を手で持つ必要がない。また、テレビ７の画面７ａに動画コンテンツが表示されているときに携帯端末６が中継装置１０から取り外されたとしても、記憶部１７から読み出された映像信号が中継装置１０からテレビ７に出力されるので、テレビ７の画面７ａから画像の表示が消えてしまうことはない。したがって、動画コンテンツの視聴者に不快感を与えることを抑制することができ、携帯端末６からの映像信号の出力の中断による悪影響を抑制することができる。 Thereby, since the relay device 10 can include the housing 11 that holds the mobile terminal 6, the mobile terminal 6 is connected to the television 7 in a state where the mobile terminal 6 is held in the housing 11. Therefore, when operating the mobile terminal 6, the user does not need to remove the mobile terminal 6 from the relay device 10 and hold the mobile terminal 6 by hand. Even if the mobile terminal 6 is removed from the relay device 10 when the moving image content is displayed on the screen 7 a of the television 7, the video signal read from the storage unit 17 is output from the relay device 10 to the television 7. Therefore, the display of the image does not disappear from the screen 7a of the television 7. Therefore, it is possible to suppress discomfort to the viewer of the moving image content, and it is possible to suppress adverse effects due to the interruption of the output of the video signal from the mobile terminal 6.
　また、本実施の形態において、記憶部１７は、２つの記憶領域（第１記憶領域１７ａ及び第２記憶領域１７ｂ）を有し、記憶制御部１６ｂは、第１インタフェース１２への携帯端末６の接続が検出されている場合には、第１インタフェース１２から入力した映像信号に含まれる複数のフレームを２つの記憶領域に交互に上書きし、２つの記憶領域の一方（例えば第２記憶領域１７ｂ）にフレームが上書きされているときに第１インタフェースへの携帯端末６の非接続が検出された場合には、２つの記憶領域の他方（例えば第１記憶領域１７ａ）からフレームを読み出す。 In the present embodiment, the storage unit 17 has two storage areas (a first storage area 17 a and a second storage area 17 b), and the storage control unit 16 b is connected to the first interface 12 by the mobile terminal 6. When the connection is detected, a plurality of frames included in the video signal input from the first interface 12 are overwritten alternately on the two storage areas, and one of the two storage areas (for example, the second storage area 17b). If the connection of the portable terminal 6 to the first interface is detected when the frame is overwritten in the frame, the frame is read from the other of the two storage areas (for example, the first storage area 17a).
　これにより、記憶部１７は、フレームを格納するための２つの記憶領域を有すればよく、記憶部１７の容量を削減することができ、記憶部１７のコストを削減することができる。 Thus, the storage unit 17 only needs to have two storage areas for storing frames, the capacity of the storage unit 17 can be reduced, and the cost of the storage unit 17 can be reduced.
　（実施の形態２）
　次に、実施の形態２について説明する。本実施の形態では、携帯端末から出力された映像信号が第１アプリケーション及び第２アプリケーションのどちらによって出力された映像信号であるかに基づいて映像信号の書き込み及び読み出しを制御する点が主として実施の形態１と異なる。以下に、実施の形態１と異なる点を中心に実施の形態２について図９～図１２を参照しながら具体的に説明する。 (Embodiment 2)
Next, a second embodiment will be described. In the present embodiment, the point that the video signal writing and reading are controlled based on whether the video signal output from the portable terminal is the video signal output by the first application or the second application is mainly implemented. Different from Form 1. Hereinafter, the second embodiment will be described in detail with reference to FIGS. 9 to 12, focusing on differences from the first embodiment.
　［中継装置の機能構成］
　まず、中継装置の機能構成について、図９を参照しながら具体的に説明する。図９は、実施の形態２に係る中継装置２０の機能ブロック図である。 [Functional configuration of relay device]
First, the functional configuration of the relay apparatus will be specifically described with reference to FIG. FIG. 9 is a functional block diagram of the relay device 20 according to the second embodiment.
　中継装置２０は、機能的な構成要素として、第１インタフェース１２と、第２インタフェース１３と、第３インタフェース１４と、制御部２６と、記憶部１７と、を備える。制御部２６は、判定部２６ａと、記憶制御部２６ｂと、選択部２６ｃと、を備える。 The relay device 20 includes a first interface 12, a second interface 13, a third interface 14, a control unit 26, and a storage unit 17 as functional components. The control unit 26 includes a determination unit 26a, a storage control unit 26b, and a selection unit 26c.
　判定部２６ａは、第１インタフェース１２から入力する映像信号が携帯端末６の第１アプリケーション及び第２アプリケーションのどちらにより出力されたかを判定する。例えば、判定部２６ａは、映像信号に付加されたアプリケーションの種別を示す情報に基づいて判定を行う。 The determination unit 26a determines whether the video signal input from the first interface 12 is output by the first application or the second application of the mobile terminal 6. For example, the determination unit 26a performs determination based on information indicating the type of application added to the video signal.
　第１アプリケーションは、例えば動画再生アプリケーションであり、第２アプリケーションは、例えば電話アプリケーションである。動画再生アプリケーションは、動画コンテンツを再生するためのソフトウェアプログラムであり、再生された動画コンテンツの映像信号を出力する。動画コンテンツは、インターネット上でストリーミング配信される動画コンテンツであってもよいし、記録媒体に記録された動画コンテンツであってもよい。また、電話アプリケーションは、双方向の音声通信を行うためのソフトウェアプログラムであり、電話の着信などを通知するための映像信号を出力する。 The first application is, for example, a video playback application, and the second application is, for example, a telephone application. The moving image reproduction application is a software program for reproducing moving image content, and outputs a video signal of the reproduced moving image content. The moving image content may be a moving image content streamed on the Internet or a moving image content recorded on a recording medium. The telephone application is a software program for performing two-way audio communication, and outputs a video signal for notifying incoming calls.
　記憶制御部２６ｂは、記憶部１７に対する映像信号の書き込み及び読み出しを制御する。具体的には、第１インタフェース１２から入力する映像信号が第１アプリケーションにより出力された映像信号であると判定された場合には、記憶制御部２６ｂは、第１インタフェース１２から入力した映像信号を記憶部１７に書き込む。一方、第１インタフェース１２から入力する映像信号が第２アプリケーションにより出力された映像信号であると判定された場合には、記憶制御部２６ｂは、記憶部１７から映像信号を読み出す。 The storage control unit 26b controls writing and reading of the video signal with respect to the storage unit 17. Specifically, when it is determined that the video signal input from the first interface 12 is a video signal output by the first application, the storage control unit 26b receives the video signal input from the first interface 12 as a video signal. Write to the storage unit 17. On the other hand, when it is determined that the video signal input from the first interface 12 is a video signal output by the second application, the storage control unit 26 b reads the video signal from the storage unit 17.
　選択部２６ｃは、第１インタフェース１２から入力する映像信号及び記憶部１７から読み出される映像信号の少なくとも一方を、第２インタフェース１３を介して映像信号をテレビ７に出力する。本実施の形態では、選択部２６ｃは、第１インタフェース１２から入力する映像信号及び記憶部１７から読み出される映像信号を選択的にテレビ７に出力する。具体的には、選択部２６ｃは、判定部２６ａによる判定結果に基づいて第１インタフェース１２及び記憶部１７のいずれかを選択する。そして、選択部２６ｃは、選択された第１インタフェース１２又は記憶部１７から得られる映像信号を、第２インタフェース１３を介してテレビ７に出力する。つまり、選択部２６ｃは、判定部２６ａによる判定結果に基づいて、第１インタフェース１２及び記憶部１７の間で入力を切り替える。 The selection unit 26c outputs at least one of the video signal input from the first interface 12 and the video signal read from the storage unit 17 to the television 7 via the second interface 13. In the present embodiment, the selection unit 26 c selectively outputs the video signal input from the first interface 12 and the video signal read from the storage unit 17 to the television 7. Specifically, the selection unit 26c selects either the first interface 12 or the storage unit 17 based on the determination result by the determination unit 26a. Then, the selection unit 26 c outputs the video signal obtained from the selected first interface 12 or the storage unit 17 to the television 7 via the second interface 13. That is, the selection unit 26c switches the input between the first interface 12 and the storage unit 17 based on the determination result by the determination unit 26a.
　より具体的には、第１インタフェース１２から入力する映像信号が第１アプリケーションにより出力された映像信号であると判定された場合には、選択部２６ｃは、第１インタフェース１２から入力した映像信号を出力する。一方、第１インタフェース１２から入力する映像信号が第２アプリケーションにより出力された映像信号であると判定された場合には、選択部２６ｃは、記憶部１７から読み出された映像信号を出力する。 More specifically, when it is determined that the video signal input from the first interface 12 is a video signal output by the first application, the selection unit 26 c receives the video signal input from the first interface 12. Output. On the other hand, when it is determined that the video signal input from the first interface 12 is a video signal output by the second application, the selection unit 26c outputs the video signal read from the storage unit 17.
　[中継装置の動作]
　次に、以上のように構成された本実施の形態に係る中継装置２０の動作について図１０～図１２を参照しながら具体的に説明する。図１０は、実施の形態２に係る中継装置２０の動作の一例を示す通信シーケンス図である。 [Repeater operation]
Next, the operation of relay apparatus 20 according to the present embodiment configured as described above will be specifically described with reference to FIGS. FIG. 10 is a communication sequence diagram illustrating an example of the operation of the relay device 20 according to the second embodiment.
　携帯端末６において動画再生アプリケーションが動画を再生中に電話アプリケーションが電話を着信すると、電話アプリケーションは、電話着信を通知するための映像信号を出力する（Ｓ４０）。 When the telephone application receives a call while the moving picture playback application is playing back the moving picture on the mobile terminal 6, the telephone application outputs a video signal for notifying the incoming call (S40).
　中継装置２０の判定部２６ａは、第１インタフェース１２から入力する映像信号が携帯端末６の電話アプリケーションにより出力されたと判定する（Ｓ４１）。 The determination unit 26a of the relay device 20 determines that the video signal input from the first interface 12 is output by the telephone application of the mobile terminal 6 (S41).
　中継装置２０の記憶制御部２６ｂは、第１インタフェース１２から入力される映像信号の記憶部１７への保存を停止し、記憶部１７に保存されている映像信号（フレーム）を読み出す（Ｓ４２）。選択部２６ｃは、テレビ７に出力するための映像信号の入力を、第１インタフェース１２から記憶部１７に切り替える（Ｓ４３）。その結果、記憶部１７から読み出されたフレームが映像信号としてテレビ７に出力される（Ｓ４４）。テレビ７は、入力した映像信号を画面７ａに表示する（Ｓ４５）。つまり、テレビ７の画面７ａには、記憶部１７から読み出された１つのフレームが表示される。 The storage control unit 26b of the relay device 20 stops storing the video signal input from the first interface 12 in the storage unit 17, and reads the video signal (frame) stored in the storage unit 17 (S42). The selection unit 26c switches the input of the video signal to be output to the television 7 from the first interface 12 to the storage unit 17 (S43). As a result, the frame read from the storage unit 17 is output to the television 7 as a video signal (S44). The television 7 displays the input video signal on the screen 7a (S45). That is, one frame read from the storage unit 17 is displayed on the screen 7 a of the television 7.
　次に、このような中継装置２０の動作を、タイミングチャートを用いて説明する。図１１は、実施の形態２に係る中継装置２０の動作の一例を示すタイミングチャートである。図１１では、図６と同様に、時間が左から右へ流れており、六角形の水平バー内の文字がアクション又は状態を表しており、水平バーの長さがアクション又は状態の時間を表している。 Next, the operation of such a relay device 20 will be described using a timing chart. FIG. 11 is a timing chart illustrating an example of the operation of the relay device 20 according to the second embodiment. In FIG. 11, as in FIG. 6, time flows from left to right, the characters in the hexagonal horizontal bar represent the action or state, and the length of the horizontal bar represents the time of the action or state. ing.
　動作アプリバー２００は、携帯端末６で動作している、映像信号の出力元のアプリケーションを示す。ここでは、Ｔ４で「動画再生アプリ」から「電話アプリ」に変化し、Ｔ５で「電話アプリ」から「動画再生アプリ」に変化している。 The operation application bar 200 indicates an application that is operating on the mobile terminal 6 and is an output source of the video signal. Here, “video playback application” is changed to “phone application” at T4, and “phone application” is changed to “video playback application” at T5.
　入力映像信号バー２０１は、第１インタフェース１２を介して携帯端末６から中継装置２０に伝送される映像信号のフレームを示す。ここでは、フレームＦ１、Ｆ２、Ｆ３が順に中継装置２０に入力された後、Ｔ４でフレームＦ３からフレームＦ＿ＴＥＬに切り替わる。その後、Ｔ５からフレームＦｎ、Ｆｎ＋１が順に入力される。ここで、フレームＦ１～Ｆ３、Ｆｎ、Ｆｎ＋１は、動画再生アプリにより出力されたフレームであり、フレームＦ＿ＴＥＬは、電話アプリにより出力されたフレームである。 The input video signal bar 201 indicates a frame of a video signal transmitted from the mobile terminal 6 to the relay device 20 via the first interface 12. Here, after the frames F1, F2, and F3 are sequentially input to the relay apparatus 20, the frame F3 is switched to the frame F_TEL at T4. Thereafter, frames Fn and Fn + 1 are sequentially input from T5. Here, the frames F1 to F3, Fn, and Fn + 1 are frames output by the video playback application, and the frame F_TEL is a frame output by the telephone application.
　このように、動画再生アプリにより出力された映像信号であるフレームＦ１～Ｆ３が第１インタフェース１２を介して中継装置２０に順に入力されると、当該フレームＦ１～Ｆ３が順にテレビ７に出力される（Ｔ１～Ｔ４）。このとき、記憶制御部２６ｂは、記憶部１７の第１記憶領域１７ａ及び第２記憶領域１７ｂに交互にフレームＦ１～Ｆ３を順に書き込む。 As described above, when the frames F1 to F3, which are video signals output by the video reproduction application, are sequentially input to the relay apparatus 20 via the first interface 12, the frames F1 to F3 are sequentially output to the television 7. (T1-T4). At this time, the storage control unit 26b writes the frames F1 to F3 alternately in order in the first storage area 17a and the second storage area 17b of the storage unit 17.
　その後、映像信号の出力元が「動画再生アプリ」から「電話アプリ」に切り替わると（Ｔ４）、フレームＦ＿ＴＥＬが第１インタフェース１２を介して中継装置２０に入力される。このとき、記憶制御部２６ｂは、フレームＦ３を書き込み中の第１記憶領域１７ａとは逆の第２記憶領域１７ｂからフレームＦ２を読み出す。同時に、選択部２６ｃは、テレビ７に出力するための映像信号の入力を第１インタフェース１２から記憶部１７に切り替える。その結果、第２記憶領域１７ｂから読み出されたフレームＦ２が中継装置２０からテレビ７に継続的に出力される（Ｔ４～Ｔ５）。 Thereafter, when the output source of the video signal is switched from the “video playback application” to the “phone application” (T4), the frame F_TEL is input to the relay device 20 via the first interface 12. At this time, the storage control unit 26b reads the frame F2 from the second storage area 17b opposite to the first storage area 17a in which the frame F3 is being written. At the same time, the selection unit 26 c switches the input of the video signal to be output to the television 7 from the first interface 12 to the storage unit 17. As a result, the frame F2 read from the second storage area 17b is continuously output from the relay device 20 to the television 7 (T4 to T5).
　さらにその後、映像信号の出力元が「電話アプリ」から「動画再生アプリ」に切り替わると（Ｔ５）、選択部２６ｃは、テレビ７に出力するための映像信号の入力を記憶部１７から第１インタフェース１２に切り替える。その結果、第１インタフェース１２から入力されたフレームＦｎ、Ｆｎ＋１が中継装置２０からテレビ７に順に出力される。また、記憶制御部２６ｂは、記憶部１７の第１記憶領域１７ａ及び第２記憶領域１７ｂに交互にフレームＦｎ、Ｆｎ＋１を順に書き込む（Ｔ５～Ｔ７）。 Thereafter, when the output source of the video signal is switched from “phone application” to “video playback application” (T5), the selection unit 26c receives input of the video signal to be output to the television 7 from the storage unit 17 to the first interface. Switch to 12. As a result, the frames Fn and Fn + 1 input from the first interface 12 are sequentially output from the relay device 20 to the television 7. Further, the storage control unit 26b writes the frames Fn and Fn + 1 alternately in order in the first storage area 17a and the second storage area 17b of the storage unit 17 (T5 to T7).
　このような中継装置２０の動作について図１２を用いてさらに説明する。図１２は、実施の形態２に係る中継装置２０の動作の一例を説明するための図である。 The operation of the relay device 20 will be further described with reference to FIG. FIG. 12 is a diagram for explaining an example of the operation of the relay device 20 according to the second embodiment.
　図１２では、電話アプリが映像信号を出力しているので、中継装置２０の記憶部１７から読み出されたフレームがテレビ７に出力される。その結果、テレビ７の画面７ａには、映像信号の出力元が動画再生アプリから電話アプリに切り替えられる直前に表示されていたフレーム（静止画像）が表示され続ける。 In FIG. 12, since the telephone application is outputting the video signal, the frame read from the storage unit 17 of the relay device 20 is output to the television 7. As a result, the frame (still image) displayed immediately before the video signal output source is switched from the video playback application to the telephone application continues to be displayed on the screen 7 a of the television 7.
　[効果等］
　以上のように、本実施の形態に係る中継装置２０は、携帯端末６からテレビ７に映像信号を中継する装置であって、携帯端末６を着脱可能に保持する筐体１１と、筐体１１に設けられ、筐体１１に保持された携帯端末６にケーブルを介さずに直接接続される第１インタフェース１２と、筐体１１に設けられ、テレビ７に接続される第２インタフェース１３と、筐体１１に収容された制御部２６と、を備える。携帯端末６は、第１アプリケーション及び第２アプリケーションを有し、第１アプリケーション及び第２アプリケーションの各々は、映像信号を中継装置２０に出力する。制御部２６は、第１インタフェース１２から入力する映像信号が第１アプリケーション及び第２アプリケーションのどちらにより出力されたかを判定する判定部２６ａと、記憶部１７に対する映像信号の書き込み及び読み出しを制御する記憶制御部２６ｂと、第１インタフェース１２から入力する映像信号及び記憶部１７から読み出される映像信号の少なくとも一方を、第２インタフェース１３を介してテレビ７に出力する選択部２６ｃと、を備える。ここで、第１インタフェース１２から入力する映像信号が第１アプリケーションにより出力された映像信号であると判定された場合には、（i）記憶制御部２６ｂは、第１インタフェース１２から入力した映像信号を記憶部１７に書き込み、（ii）選択部２６ｃは、第１インタフェース１２から入力した映像信号を出力する。一方、第１インタフェース１２から入力する映像信号が第２アプリケーションにより出力された映像信号であると判定された場合には、（i）記憶制御部２６ｂは、記憶部１７から映像信号を読み出し、（ii）選択部２６ｃは、記憶部１７から読み出された映像信号を出力する。 [Effects]
As described above, the relay device 20 according to the present embodiment is a device that relays a video signal from the mobile terminal 6 to the television 7, and includes the housing 11 that detachably holds the mobile terminal 6, and the housing 11. A first interface 12 directly connected to the portable terminal 6 held in the casing 11 without a cable, a second interface 13 provided in the casing 11 and connected to the television 7, and a casing. A control unit 26 accommodated in the body 11. The mobile terminal 6 has a first application and a second application, and each of the first application and the second application outputs a video signal to the relay device 20. The control unit 26 determines whether the video signal input from the first interface 12 is output by the first application or the second application, and a memory that controls writing and reading of the video signal to and from the storage unit 17. The control unit 26 b includes a selection unit 26 c that outputs at least one of a video signal input from the first interface 12 and a video signal read from the storage unit 17 to the television 7 via the second interface 13. Here, if it is determined that the video signal input from the first interface 12 is a video signal output by the first application, (i) the storage control unit 26b receives the video signal input from the first interface 12. (Ii) the selection unit 26c outputs the video signal input from the first interface 12. On the other hand, when it is determined that the video signal input from the first interface 12 is a video signal output by the second application, (i) the storage control unit 26b reads the video signal from the storage unit 17, and ( ii) The selection unit 26c outputs the video signal read from the storage unit 17.
　これにより、テレビ７の画面７ａに第１アプリケーションの動画コンテンツが表示されているときに第２アプリケーションから映像信号が出力された場合に、携帯端末６の使用者は、携帯端末６の画面６ａで第２アプリケーションの映像信号を確認することができる。さらに、テレビ７の画面７ａには動画コンテンツのフレームが表示されるため、使用者以外の他の視聴者に不快感を与えることを抑制することができる。 Thereby, when the video signal is output from the second application while the moving image content of the first application is displayed on the screen 7 a of the television 7, the user of the mobile terminal 6 can use the screen 6 a of the mobile terminal 6. The video signal of the second application can be confirmed. Furthermore, since the frame of the moving image content is displayed on the screen 7a of the television 7, it is possible to suppress discomfort to viewers other than the user.
　（実施の形態３）
　次に、実施の形態３について説明する。本実施の形態では、第１インタフェースから入力する映像信号が第２アプリケーションにより出力された映像信号である場合に、当該映像信号を、記憶部１７から読み出された映像信号に重畳して出力する点が主として実施の形態２と異なる。以下に、実施の形態２と異なる点を中心に実施の形態３について図１３～図１６を参照しながら具体的に説明する。 (Embodiment 3)
Next, Embodiment 3 will be described. In the present embodiment, when the video signal input from the first interface is a video signal output by the second application, the video signal is superimposed on the video signal read from the storage unit 17 and output. This is mainly different from the second embodiment. The third embodiment will be specifically described below with reference to FIGS. 13 to 16, focusing on the differences from the second embodiment.
　［中継装置の機能構成］
　中継装置の機能構成について、図１３を参照しながら具体的に説明する。図１３は、実施の形態３に係る中継装置３０の機能ブロック図である。 [Functional configuration of relay device]
The functional configuration of the relay apparatus will be specifically described with reference to FIG. FIG. 13 is a functional block diagram of the relay device 30 according to the third embodiment.
　中継装置３０は、機能的な構成要素として、第１インタフェース１２と、第２インタフェース１３と、第３インタフェース１４と、制御部３６と、記憶部１７と、を備える。制御部３６は、判定部２６ａと、記憶制御部２６ｂと、選択部３６ｃと、を備える。 The relay device 30 includes a first interface 12, a second interface 13, a third interface 14, a control unit 36, and a storage unit 17 as functional components. The control unit 36 includes a determination unit 26a, a storage control unit 26b, and a selection unit 36c.
　選択部３６ｃは、第１インタフェース１２から入力する映像信号及び記憶部１７から読み出される映像信号の少なくとも一方を、第２インタフェース１３を介してテレビ７に出力する。本実施の形態では、選択部３６ｃは、第１インタフェース１２から入力する映像信号を単独でテレビ７に出力する、又は、第１インタフェース１２から入力する映像信号を記憶部１７から読み出される映像信号に重畳して出力する。 The selection unit 36 c outputs at least one of the video signal input from the first interface 12 and the video signal read from the storage unit 17 to the television 7 via the second interface 13. In the present embodiment, the selection unit 36c outputs the video signal input from the first interface 12 alone to the television 7, or converts the video signal input from the first interface 12 into a video signal read from the storage unit 17. Superimpose and output.
　具体的には、第１インタフェース１２から入力する映像信号が第１アプリケーションにより出力された映像信号であると判定された場合には、選択部３６ｃは、第１インタフェース１２から入力した映像信号を出力する。一方、第１インタフェース１２から入力する映像信号が第１アプリケーションにより出力された映像信号であると判定された場合には、選択部３６ｃは、第１インタフェース１２から入力した映像信号を記憶部１７から読み出された映像信号に重畳して出力する。例えば、選択部３６ｃは、第２アプリケーションにより出力された映像信号のフレームを縮小及び回転し、縮小及び回転されたフレームを記憶部１７から読み出されたフレームの予め定められた領域に重ね合わせる。 Specifically, when it is determined that the video signal input from the first interface 12 is a video signal output by the first application, the selection unit 36c outputs the video signal input from the first interface 12. To do. On the other hand, when it is determined that the video signal input from the first interface 12 is a video signal output by the first application, the selection unit 36 c receives the video signal input from the first interface 12 from the storage unit 17. It is superimposed on the read video signal and output. For example, the selection unit 36c reduces and rotates the frame of the video signal output by the second application, and superimposes the reduced and rotated frame on a predetermined area of the frame read from the storage unit 17.
　[中継装置の動作]
　次に、以上のように構成された本実施の形態に係る中継装置３０の動作について図１４～図１７を参照しながら具体的に説明する。図１４は、実施の形態３に係る中継装置３０の動作の一例を示す通信シーケンス図である。 [Repeater operation]
Next, the operation of relay apparatus 30 according to the present embodiment configured as described above will be specifically described with reference to FIGS. FIG. 14 is a communication sequence diagram illustrating an example of the operation of the relay device 30 according to the third embodiment.
　映像信号の記憶部１７への保存が停止された後（Ｓ４２）、選択部３６ｃは、第１インタフェース１２から入力される映像信号の画像を処理する。そして、選択部３６ｃは、記憶部１７から読み出されたフレームに、処理された画像を重畳し（Ｓ５０）、重畳されたフレームを重畳映像信号としてテレビ７に出力する（Ｓ５１）。つまり、テレビ７の画面７ａには、記憶部１７から読み出された映像コンテンツと、電話アプリから出力された映像コンテンツとが同時に表示される（Ｓ５２）。 After the storage of the video signal in the storage unit 17 is stopped (S42), the selection unit 36c processes the image of the video signal input from the first interface 12. Then, the selection unit 36c superimposes the processed image on the frame read from the storage unit 17 (S50), and outputs the superimposed frame to the television 7 as a superimposed video signal (S51). That is, the video content read from the storage unit 17 and the video content output from the telephone application are simultaneously displayed on the screen 7a of the television 7 (S52).
　次に、このような中継装置３０の動作を、タイミングチャートを用いて説明する。図１５は、実施の形態３に係る中継装置３０の動作の一例を示すタイミングチャートである。図１５では、図１１と同様に、時間が左から右へ流れており、六角形の水平バー内の文字がアクション又は状態を表しており、水平バーの長さがアクション又は状態の時間を表している。 Next, the operation of such a relay device 30 will be described using a timing chart. FIG. 15 is a timing chart illustrating an example of the operation of the relay device 30 according to the third embodiment. In FIG. 15, as in FIG. 11, the time flows from left to right, the characters in the hexagonal horizontal bar represent the action or state, and the length of the horizontal bar represents the time of the action or state. ing.
　出力映像信号バー３０６は、第２インタフェース１３を介して中継装置３０からテレビ７に伝送される映像信号のフレームを示す。ここでは、中継装置３０から、フレームＦ１～Ｆ３が順に出力された後に、フレームＦ２にフレームＦ＿ＴＥＬが重畳されたフレームＦ２＋Ｆ＿ＴＥＬが出力され、その後、フレームＦｎ、Ｆｎ＋１が順に出力されている。 The output video signal bar 306 indicates a frame of the video signal transmitted from the relay device 30 to the television 7 via the second interface 13. Here, after the frames F1 to F3 are output in order from the relay device 30, a frame F2 + F_TEL in which the frame F_TEL is superimposed on the frame F2 is output, and then the frames Fn and Fn + 1 are output in order.
　このような中継装置３０の動作について図１６を用いてさらに説明する。図１６は、実施の形態３に係る中継装置３０の動作の一例を説明するための図である。 The operation of the relay device 30 will be further described with reference to FIG. FIG. 16 is a diagram for explaining an example of the operation of the relay device 30 according to the third embodiment.
　図１６では、電話アプリが映像信号を出力しているので、中継装置３０の記憶部１７から読み出されたフレームに電話アプリの映像が重畳されてテレビ７に出力される。その結果、テレビ７の画面７ａには、映像信号の出力元が動画再生アプリから電話アプリに切り替えられる直前に表示されていたフレーム（静止画像）が表示され続けるとともに、フレームの一部領域に電話アプリの映像が表示される。 In FIG. 16, since the telephone application is outputting the video signal, the video of the telephone application is superimposed on the frame read from the storage unit 17 of the relay device 30 and output to the television 7. As a result, the screen 7a of the television 7 continues to display the frame (still image) that was displayed immediately before the video signal output source was switched from the video playback app to the phone app, and the phone 7 was called in a partial area of the frame. The app video is displayed.
　［効果等］
　以上のように、本実施の形態において、第１インタフェース１２から入力する映像信号が第２アプリケーションにより出力された映像信号であると判定された場合に、選択部３６ｃは、第１インタフェース１２から入力する映像信号を記憶部１７から読み出される映像信号に重畳して出力する。 [Effects]
As described above, in the present embodiment, when it is determined that the video signal input from the first interface 12 is a video signal output by the second application, the selection unit 36c receives the input from the first interface 12. The video signal to be superposed on the video signal read from the storage unit 17 is output.
　これにより、テレビ７の画面７ａに第１アプリケーションの動画コンテンツが表示されているときに第２アプリケーションから映像信号が出力された場合に、携帯端末６の使用者はテレビ７の画面７ａで第２アプリケーションの映像信号を容易に確認することができる。さらに、テレビ７の画面７ａには動画コンテンツのフレームも表示されているので、使用者以外の他の視聴者に不快感を与えることを抑制することができる。 Thereby, when the video signal is output from the second application while the moving image content of the first application is displayed on the screen 7 a of the television 7, the user of the mobile terminal 6 performs the second operation on the screen 7 a of the television 7. The video signal of the application can be easily confirmed. Furthermore, since the frame of the moving image content is also displayed on the screen 7a of the television 7, it is possible to suppress discomfort to other viewers other than the user.
　（他の実施の形態）
　以上、本発明の１つまたは複数の態様に係る中継装置について、実施の形態に基づいて説明したが、本発明は、この実施の形態に限定されるものではない。本発明の趣旨を逸脱しない限り、当業者が思いつく各種変形を本実施の形態に施したものや、異なる実施の形態における構成要素を組み合わせて構築される形態も、本発明の１つまたは複数の態様の範囲内に含まれてもよい。 (Other embodiments)
As described above, the relay device according to one or more aspects of the present invention has been described based on the embodiment, but the present invention is not limited to this embodiment. Unless it deviates from the gist of the present invention, one or more of the present invention may be applied to various modifications that can be conceived by those skilled in the art, or forms constructed by combining components in different embodiments. It may be included within the scope of the embodiments.
　例えば、上記実施の形態１と上記実施の形態２又は３とは組み合わされてもよい。この場合の動作の一例について図１７を参照しながら説明する。図１７は、他の実施の形態に係る中継装置４０の動作を説明するための図である。図１７は、電話アプリにより映像信号が出力された後に、携帯端末６が中継装置４０から取り外されている。このような場合でも、中継装置４０は、記憶部１７から読み出されたフレームをテレビ７に出力することができる。その結果、中継装置４０は、携帯端末６が中継装置４０から取り外された後も、テレビ７の画面７ａに、映像信号の出力元が動画再生アプリから電話アプリに切り替えられる直前に表示されていたフレーム（静止画像）を表示させ続けることができる。したがって、携帯端末６の使用者が、携帯端末６の画面６ａ又はテレビ７の画面７ａで電話アプリの通知情報を確認した後に、携帯端末６を中継装置４０から取り外しても、中継装置４０は、動画再生アプリの映像（フレーム）をテレビ７の画面７ａに表示することができる。ゆえに、使用者以外の他の視聴者に不快感を与えることを抑制することができる。 For example, the first embodiment and the second or third embodiment may be combined. An example of the operation in this case will be described with reference to FIG. FIG. 17 is a diagram for explaining the operation of the relay device 40 according to another embodiment. In FIG. 17, the mobile terminal 6 is removed from the relay device 40 after the video signal is output by the telephone application. Even in such a case, the relay device 40 can output the frame read from the storage unit 17 to the television 7. As a result, the relay device 40 was displayed on the screen 7a of the television 7 just before the video signal output source was switched from the video playback app to the phone app even after the mobile terminal 6 was removed from the relay device 40. The frame (still image) can be continuously displayed. Therefore, even if the user of the portable terminal 6 removes the portable terminal 6 from the relay device 40 after confirming the notification information of the telephone application on the screen 6a of the portable terminal 6 or the screen 7a of the television 7, the relay device 40 The video (frame) of the video playback application can be displayed on the screen 7 a of the television 7. Therefore, it is possible to suppress discomfort to other viewers other than the user.
　なお、上記各実施の形態では、記憶部は、中継装置に含まれていたが、これに限られない。例えば、記憶部は、中継装置に接続された外部記憶装置に含まれてもよい。この場合であっても、上記各実施の形態と同様に外部記憶装置における映像信号の書き込み及び読み出しが制御されることにより、上記各実施の形態と同様の効果を得ることができる。 In each of the above embodiments, the storage unit is included in the relay device, but is not limited thereto. For example, the storage unit may be included in an external storage device connected to the relay device. Even in this case, the same effects as those of the above embodiments can be obtained by controlling the writing and reading of video signals in the external storage device as in the above embodiments.
　また、上記各実施の形態では、リモコン５は、赤外線によるコマンドを送信したが、無線によるコマンドであれば、Ｗｉ－Ｆｉ等の電波によるコマンドを送信してもよい。そのときには、第３インタフェース１４は、Ｗｉ－Ｆｉ等の電波によるコマンドを受信するためのアンテナ、受信回路等を備えてもよい。 In each of the above embodiments, the remote controller 5 transmits an infrared command, but may transmit a command using radio waves such as Wi-Fi if the command is a wireless command. At that time, the third interface 14 may include an antenna for receiving a command by radio waves such as Wi-Fi, a receiving circuit, and the like.
　また、上記各実施の形態では、第２インタフェース１３は、ＨＤＭＩ（登録商標）等の有線によって映像信号を伝送するインタフェースであったが、Ｗｉ－Ｆｉ等の無線によって映像信号を伝送するインタフェースであってもよい。そのときには、第２インタフェース１３は、Ｗｉ－Ｆｉ等の無線によって映像信号を伝送するためのアンテナ、送受信回路等を備えてもよい。 In each of the above embodiments, the second interface 13 is an interface that transmits a video signal by wire such as HDMI (registered trademark). However, the second interface 13 is an interface that transmits a video signal by wireless such as Wi-Fi. May be. At that time, the second interface 13 may include an antenna, a transmission / reception circuit, and the like for transmitting a video signal wirelessly such as Wi-Fi.
　また、上記各実施の形態では、携帯端末６からテレビ７に映像信号が中継される場合について説明したが、映像信号とともに音響信号が中継されてもよい。この場合、テレビ７は、音響信号に基づく音を出力するスピーカ（図示せず）を有してもよい。 In each of the above embodiments, the case where the video signal is relayed from the mobile terminal 6 to the television 7 has been described. However, the audio signal may be relayed together with the video signal. In this case, the television 7 may include a speaker (not shown) that outputs sound based on the acoustic signal.
　また、上記実施の形態２及び３では、第１アプリケーション及び第２アプリケーションが、それぞれ、動画再生アプリケーション及び電話アプリケーションである場合について説明したが、これに限られない。例えば、第２アプリケーションは、ＳＮＳ（Ｓｏｃｉａｌ　Ｎｅｔｗｏｒｋｉｎｇ　Ｓｅｒｖｉｃｅ）用のアプリケーションであってもよい。 In the second and third embodiments, the case where the first application and the second application are a moving image reproduction application and a telephone application, respectively, has been described. However, the present invention is not limited to this. For example, the second application may be an application for SNS (Social Networking Service).
　また、上記各実施の形態では、フレーム単位で記憶部１７の２つの記憶領域に上書きされていたが、これに限られない。例えば、予め定められた数のフレーム単位で２つの記憶領域に上書きされてもよい。この場合、選択部１６ｃは、第１インタフェース１２への携帯端末６の非接続が検出されたときに、予め定められた数のフレームを順に出力してもよいし、予め定められた数のフレームのうちの１つのみを出力してもよい。 In each of the above embodiments, the two storage areas of the storage unit 17 are overwritten in units of frames. However, the present invention is not limited to this. For example, the two storage areas may be overwritten in units of a predetermined number of frames. In this case, when the disconnection of the mobile terminal 6 to the first interface 12 is detected, the selection unit 16c may sequentially output a predetermined number of frames, or a predetermined number of frames. Only one of them may be output.
　また、上記各実施の形態では、外部表示装置がテレビである場合について説明したが、外部表示装置はテレビに限定されない。例えば、外部表示装置は、表示ディスプレイであってもよい。 Further, although cases have been described with the above embodiments where the external display device is a television, the external display device is not limited to a television. For example, the external display device may be a display display.
　本発明は、携帯端末から出力される映像信号を表示装置に中継する卓上型の中継装置として、例えば、スマートフォンやタブレットコンピュータ用のクレードルとして、利用できる。 The present invention can be used as a desktop relay device that relays a video signal output from a mobile terminal to a display device, for example, as a cradle for a smartphone or tablet computer.
　３　電源コード
　４　ケーブル
　５　リモコン
　６　携帯端末
　６ａ　画面
　７　テレビ
　７ａ　画面
　１０、２０、３０、４０　中継装置
　１１　筐体
　１１ａ　保持部
　１２　第１インタフェース
　１３　第２インタフェース
　１４　第３インタフェース
　１５　電源端子
　１６、２６、３６　制御部
　１６ａ　検出部
　１６ｂ、２６ｂ　記憶制御部
　１６ｃ、２６ｃ、３６ｃ　選択部
　１７　記憶部
　１７ａ　第１記憶領域
　１７ｂ　第２記憶領域 DESCRIPTION OF SYMBOLS 3 Power cord 4 Cable 5 Remote control 6 Portable terminal 6a Screen 7 Television 7a Screen 10, 20, 30, 40 Relay apparatus 11 Case 11a Holding part 12 1st interface 13 2nd interface 14 3rd interface 15 Power supply terminals 16, 26, 36 control unit 16a detection unit 16b, 26b storage control unit 16c, 26c, 36c selection unit 17 storage unit 17a first storage area 17b second storage area

Claims (8)

  1. 　携帯端末から外部表示装置に映像信号を中継する中継装置であって、
    　前記携帯端末を着脱可能に保持する筐体と、
    　前記筐体に設けられ、前記筐体に保持された前記携帯端末に接続される第１インタフェースと、
    　前記筐体に設けられ、前記外部表示装置に接続される第２インタフェースと、
    　前記筐体に収容された制御部と、を備え、
    　前記制御部は、
    　前記第１インタフェースへの前記携帯端末の接続及び非接続を検出する検出部と、
    　記憶部に対する映像信号の書き込み及び読み出しを制御する記憶制御部と、
    　前記第１インタフェースから入力する映像信号及び前記記憶部から読み出される映像信号の少なくとも一方を、前記第２インタフェースを介して前記外部表示装置に出力する選択部と、を備え、
    　前記第１インタフェースへの前記携帯端末の接続が検出されている場合には、
    　（i）前記記憶制御部は、前記第１インタフェースから入力した映像信号を前記記憶部に書き込み、
    　（ii）前記選択部は、前記第１インタフェースから入力した前記映像信号を出力し、
    　前記第１インタフェースへの前記携帯端末の非接続が検出されている場合には、
    　（i）前記記憶制御部は、前記記憶部から映像信号を読み出し、
    　（ii）前記選択部は、前記記憶部から読み出された前記映像信号を出力する、
    　中継装置。     A relay device that relays a video signal from a mobile terminal to an external display device,
    A housing for detachably holding the mobile terminal;
    A first interface provided in the case and connected to the mobile terminal held in the case;
    A second interface provided in the housing and connected to the external display device;
    A control unit housed in the housing,
    The controller is
    A detection unit for detecting connection and disconnection of the mobile terminal to the first interface;
    A storage control unit that controls writing and reading of video signals to and from the storage unit;
    A selection unit that outputs at least one of a video signal input from the first interface and a video signal read from the storage unit to the external display device via the second interface;
    When connection of the mobile terminal to the first interface is detected,
    (I) The storage control unit writes the video signal input from the first interface to the storage unit,
    (Ii) The selection unit outputs the video signal input from the first interface,
    When disconnection of the mobile terminal to the first interface is detected,
    (I) The storage control unit reads a video signal from the storage unit,
    (Ii) The selection unit outputs the video signal read from the storage unit.
    Relay device.
  2. 　前記第１インタフェースは、前記携帯端末にケーブルを介さずに直接接続される、
    　請求項１に記載の中継装置。     The first interface is directly connected to the mobile terminal without a cable.
    The relay device according to claim 1.
  3. 　前記記憶部は、２つの記憶領域を有し、
    　前記記憶制御部は、
    　前記第１インタフェースへの前記携帯端末の接続が検出されている場合には、前記第１インタフェースから入力した映像信号に含まれる複数のフレームを前記２つの記憶領域に交互に上書きし、
    　前記２つの記憶領域の一方にフレームが上書きされているときに前記第１インタフェースへの前記携帯端末の非接続が検出された場合には、前記２つの記憶領域の他方からフレームを読み出す、
    　請求項１又は２に記載の中継装置。     The storage unit has two storage areas,
    The storage control unit
    When connection of the portable terminal to the first interface is detected, a plurality of frames included in the video signal input from the first interface are alternately overwritten in the two storage areas,
    If a disconnection of the mobile terminal to the first interface is detected when a frame is overwritten on one of the two storage areas, the frame is read from the other of the two storage areas;
    The relay device according to claim 1 or 2.
  4. 　前記携帯端末は、第１アプリケーション及び第２アプリケーションを有し、
    　前記第１アプリケーション及び前記第２アプリケーションの各々は、映像信号を前記中継装置に出力し、
    　前記制御部は、
    　前記第１インタフェースから入力する映像信号が前記第１アプリケーション及び前記第２アプリケーションのどちらにより出力されたかを判定する判定部を備え、
    　前記第１インタフェースから入力する映像信号が前記第１アプリケーションにより出力された映像信号であると判定された場合には、
    　（i）前記記憶制御部は、前記第１インタフェースから入力した映像信号を前記記憶部に書き込み、
    　（ii）前記選択部は、前記第１インタフェースから入力した映像信号を出力し、
    　前記第１インタフェースから入力する映像信号が前記第２アプリケーションにより出力された映像信号であると判定された場合には、
    　（i）前記記憶制御部は、前記記憶部から映像信号を読み出し、
    　（ii）前記選択部は、前記記憶部から読み出された映像信号を出力する、
    　請求項１～３のいずれか１項に記載の中継装置。     The portable terminal has a first application and a second application,
    Each of the first application and the second application outputs a video signal to the relay device,
    The controller is
    A determination unit that determines whether the video signal input from the first interface is output by the first application or the second application;
    When it is determined that the video signal input from the first interface is a video signal output by the first application,
    (I) The storage control unit writes the video signal input from the first interface to the storage unit,
    (Ii) The selection unit outputs a video signal input from the first interface,
    When it is determined that the video signal input from the first interface is a video signal output by the second application,
    (I) The storage control unit reads a video signal from the storage unit,
    (Ii) The selection unit outputs the video signal read from the storage unit.
    The relay device according to any one of claims 1 to 3.
  5. 　前記第１インタフェースから入力する映像信号が前記第２アプリケーションにより出力された映像信号であると判定された場合に、前記選択部は、さらに、前記第１インタフェースから入力する映像信号を前記記憶部から読み出された映像信号に重畳して出力する、
    　請求項４に記載の中継装置。     When it is determined that the video signal input from the first interface is a video signal output by the second application, the selection unit further receives a video signal input from the first interface from the storage unit. Superimpose on the read video signal and output
    The relay device according to claim 4.
  6. 　前記第１アプリケーションは、動画再生アプリケーションであり、
    　前記第２アプリケーションは、電話アプリケーションである、
    　請求項４又は５に記載の中継装置。     The first application is a video playback application,
    The second application is a telephone application;
    The relay device according to claim 4 or 5.
  7. 　携帯端末から外部表示装置に映像信号を中継する中継装置であって、
    　前記携帯端末を着脱可能に保持する筐体と、
    　前記筐体に設けられ、前記筐体に保持された前記携帯端末に接続される第１インタフェースと、
    　前記筐体に設けられ、前記外部表示装置に接続される第２インタフェースと、
    　前記筐体に収容された制御部と、を備え、
    　前記携帯端末は、第１アプリケーション及び第２アプリケーションを有し、
    　前記第１アプリケーション及び前記第２アプリケーションの各々は、映像信号を前記中継装置に出力し、
    　前記制御部は、
    　前記第１インタフェースから入力する映像信号が前記第１アプリケーション及び前記第２アプリケーションのどちらにより出力されたかを判定する判定部と、
    　記憶部に対する映像信号の書き込み及び読み出しを制御する記憶制御部と、
    　前記第１インタフェースから入力する映像信号及び前記記憶部から読み出される映像信号の少なくとも一方を、前記第２インタフェースを介して前記外部表示装置に出力する選択部と、を備え、
    　前記第１インタフェースから入力する映像信号が前記第１アプリケーションにより出力された映像信号であると判定された場合には、
    　（i）前記記憶制御部は、前記第１インタフェースから入力した映像信号を前記記憶部に書き込み、
    　（ii）前記選択部は、前記第１インタフェースから入力した映像信号を出力し、
    　前記第１インタフェースから入力する映像信号が前記第２アプリケーションにより出力された映像信号であると判定された場合には、
    　（i）前記記憶制御部は、前記記憶部から映像信号を読み出し、
    　（ii）前記選択部は、前記記憶部から読み出された映像信号を出力する、
    　中継装置。     A relay device that relays a video signal from a mobile terminal to an external display device,
    A housing for detachably holding the mobile terminal;
    A first interface provided in the case and connected to the mobile terminal held in the case;
    A second interface provided in the housing and connected to the external display device;
    A control unit housed in the housing,
    The portable terminal has a first application and a second application,
    Each of the first application and the second application outputs a video signal to the relay device,
    The controller is
    A determination unit that determines whether the video signal input from the first interface is output by the first application or the second application;
    A storage control unit that controls writing and reading of video signals to and from the storage unit;
    A selection unit that outputs at least one of a video signal input from the first interface and a video signal read from the storage unit to the external display device via the second interface;
    When it is determined that the video signal input from the first interface is a video signal output by the first application,
    (I) The storage control unit writes the video signal input from the first interface to the storage unit,
    (Ii) The selection unit outputs a video signal input from the first interface,
    When it is determined that the video signal input from the first interface is a video signal output by the second application,
    (I) The storage control unit reads a video signal from the storage unit,
    (Ii) The selection unit outputs the video signal read from the storage unit.
    Relay device.
  8. 　前記第１インタフェースは、前記携帯端末にケーブルを介さずに直接接続される、
    　請求項７に記載の中継装置。     The first interface is directly connected to the mobile terminal without a cable.
    The relay device according to claim 7.
PCT/JP2018/012063 2017-05-09 2018-03-26 Relay device WO2018207477A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01286587A (en) * 1988-05-12 1989-11-17 Toshiba Corp Television picture processor
JP2005277632A (en) * 2004-03-24 2005-10-06 Fuji Photo Film Co Ltd Portable telephone, vehicle-mounted cradle therefor, automobile and engine start control system thereof
JP2011254299A (en) * 2010-06-02 2011-12-15 Alpine Electronics Inc Content display device and content display method
JP2013247398A (en) * 2012-05-23 2013-12-09 Sony Corp Information processing device, information processing system, and information processing method
WO2014112095A1 (en) * 2013-01-18 2014-07-24 三菱電機株式会社 Information display control device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01286587A (en) * 1988-05-12 1989-11-17 Toshiba Corp Television picture processor
JP2005277632A (en) * 2004-03-24 2005-10-06 Fuji Photo Film Co Ltd Portable telephone, vehicle-mounted cradle therefor, automobile and engine start control system thereof
JP2011254299A (en) * 2010-06-02 2011-12-15 Alpine Electronics Inc Content display device and content display method
JP2013247398A (en) * 2012-05-23 2013-12-09 Sony Corp Information processing device, information processing system, and information processing method
WO2014112095A1 (en) * 2013-01-18 2014-07-24 三菱電機株式会社 Information display control device

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