JP2006005805A - System and apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system and an apparatus capable of relieving a load imposed on the head of a user. <P>SOLUTION: Since only an HMD display apparatus 200 is mounted on the head and a reception terminal 100 and a display controller 300 are located at a position lower than the head in the display system, the load of the apparatus imposed on the head can be considerably decreased in comparison with a display apparatus wherein a control section or the like is integrated with a head-mounted display. This is an optimum configuration for a display apparatus of a head mount type for mobile users. Further, since the display controller 300 as an interface apparatus between the reception terminal 100 and the HMD display apparatus 200 is freely removable from one side face 1 of the reception terminal 100 and has an outward appearance integrated with the reception terminal 100 when the display controller 300 is mounted on the one side face 1 of the reception terminal 100, the display controller 300 is not caught in, e.g. a bag. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a head-mounted device and a system using the device.

  Conventionally, portable DVDs (Digital Versatile Disks) and televisions have become widespread as techniques for easily enjoying television broadcasting and the like on the go. However, since the TV screen is small, it is difficult to see the details of the image and it is not powerful, and it is necessary to place the TV etc. in a position where it can be easily seen. It is necessary to watch it equally. For this reason, it is difficult to enjoy television broadcasting for a long time in a hands-free manner, for example, on the go.

  As a technique for solving such a problem, for example, a technique using a head-mounted head mounted display (HMD) is disclosed. For example, Patent Document 1 discloses a technique in which a connection unit having a control unit or the like is inserted into an insertion port of a video signal output device such as a DVD, and a connector portion of a head mounted display is connected to an exposed surface of the inserted connection unit. It is disclosed. The head mounted display and the connector part are connected by a cable.

  However, with this technology, there is a problem that the outside world cannot be seen when viewing images.

  On the other hand, for example, Patent Document 2 discloses a head-mounted image display device that can see the outside world even when watching an image by using a hologram optical element or the like for a spectacle-type lens. It is disclosed.

For this reason, for example, by replacing the display unit of Patent Document 1 with the head-mounted image display device described in Patent Document 2, a system capable of viewing the outside world even when viewing an image. Can be configured.
2002-142173 (paragraph [0019], FIG. 1) JP 2002-90687 A (paragraph [0019], FIG. 1)

  However, the technique disclosed in Patent Document 1 has a problem that the load on the head due to the connection unit or the like may increase when the head mounted display is mounted on the head.

  Further, even in a system in which Patent Document 1 and Patent Document 2 are combined as described above, since the connector portion protrudes from one side surface of the video signal output device, this portion is, for example, in a bag. There is a problem that it may be caught on the surface, which is inconvenient to carry and handle, and may cause contact failure.

  In the technique disclosed in Patent Document 1, since the connection unit having the control unit or the like is inserted into the insertion port of the video signal output device such as a DVD, the connection unit cannot be provided with the video signal output. When an operation unit is to be provided in addition to the device, for example, it is necessary to interpose an operation unit in the cable or to provide it in a head mounted display.

  In view of the circumstances as described above, an object of the present invention is to provide a system and an apparatus capable of reducing the load on the head.

  Another object of the present invention is to provide a system and apparatus that can eliminate the inconvenience of carrying and handling and poor contact.

  Another object of the present invention is to provide a system and apparatus capable of providing an operation unit for operating a video signal output device in an interface device between the video signal output device and a display device. .

  In order to achieve the above object, a system according to the present invention is a system for reproducing a video based on a video signal output from a video signal output device having a video signal output interface, wherein the video is reproduced based on the video signal. A head-mounted display device having a displayable display unit; and a signal that is mechanically detachable from the video signal output device and is attached to the video signal output device from the output interface. An input interface capable of transmitting a video signal, a video signal transmission means for transmitting the video signal to the display device, and a video signal input via the input interface to the display unit via the video signal transmission means. And a display control device including a control unit that performs control for displaying an image.

  Here, the video signal transmission means may be a cable or a transmitter.

  In the present invention, since only the display device is mounted on the head, and the video signal output device and the display control device can be arranged at a position lower than the head, the control unit or the like displays the load of the device on the head. Compared to a display device in which the device is integrated, the size can be significantly reduced. This is the optimum configuration for a head-mounted display device for mobile users. In addition, the display control device as an interface device between the video signal output device and the display device is detachable from the video signal output device, and is integrated with the video signal output device when the video signal output device is mounted. By having such an external appearance, the display control device is prevented from being caught in a bag, for example. Accordingly, there is no inconvenience in carrying and handling, and no poor contact is caused. Further, since this display control device has many exposed surfaces, the degree of freedom in design for providing the operation unit is high, and the operation unit can be provided at a position with high operability. For example, assuming that the video signal output device and the display control device are carried together, it is possible to provide an operation unit in a place where operability is good. Therefore, the system according to the present invention can improve portability.

  According to an aspect of the present invention, the video signal output device further includes the output interface provided on one side surface, and the display control device is provided between the upper and lower surfaces or the left and right sides with respect to one side surface of the video signal output device. It has a pair of protrusions that sandwich the surface, and the upper and lower surfaces or the left and right surfaces of the video signal output device have engaging portions with which the protrusions engage. Thereby, the video signal output device and the display control device can be firmly attached.

  According to an aspect of the present invention, the video signal output device includes an antenna and a receiving unit for receiving a broadcast wave including the video signal. Accordingly, the latest broadcast program can be viewed on the go without having to carry video data and the like.

  According to one aspect of the present invention, the broadcast wave is broadcast from a satellite. As a result, the latest broadcast program or the like can be viewed without selecting a place.

  According to an aspect of the present invention, the display device includes control means for controlling the transmittance of external light. Thus, by controlling the transmittance of external light when watching an image outdoors, a high-contrast image can be viewed regardless of the brightness of the external environment.

  According to an aspect of the present invention, the display control device includes a first operation unit for operating the video signal output device. Accordingly, the operability is improved when the video signal output device and the display control device are carried together.

  According to an aspect of the present invention, the video signal output device has a foldable structure, and is a second operation unit for operating the video signal output device that is folded and cannot be operated when folded. The first operation unit includes at least a part of the second operation unit. Accordingly, when the folded video signal output device and the display control device are carried together, it is not necessary to open and operate the video signal output device, so that the operability is improved.

  According to an aspect of the present invention, the video signal transmission means is a cable, and further includes an operation control device that includes a third operation unit that is interposed in the cable and operates the video signal output device. It is characterized by that. As a result, even when the video signal output device and the display control device are in a bag, for example, they can be operated by the operation control device, so that the operability is further improved.

  According to an aspect of the present invention, the first operation unit and the attachment unit to which the cable is attached are provided on the same surface of the display control device. As a result, when the video signal output device and the display control device are placed in a bag or special case, the surface of the normal cable attachment part will be located on the open side of the bag or special case. Is easy and has excellent operability.

  According to an aspect of the present invention, the display device is supplied with power from a power source of the video signal output device via the display control device. Thereby, it is not necessary to give the display device a power source, and the display device can be further reduced in weight.

  According to an aspect of the present invention, the display control device includes a cable attachment portion to which a cable serving as the video signal transmission unit is attached to a surface opposite to a surface facing the one side surface of the video signal output device. It is provided. Thereby, it becomes possible to make the whole compact compared with the case where a cable is attached to another surface. In addition, since the cable is less bent, it is possible to prevent a failure due to disconnection or the like.

  According to an aspect of the present invention, the output interface and the input interface are terminals that are physically connected to each other. As a result, the output interface and the input interface can be configured at low cost and with high reliability.

  According to an aspect of the present invention, the output interface and the input interface are infrared ports. This facilitates the attachment / detachment between the video signal output device and the display control device, eliminates contact failure, etc., and further improves the appearance when used only with the video signal output device.

  An apparatus according to the present invention is an apparatus for reproducing a video based on a video signal output from a video signal output apparatus having a video signal output interface, and includes a display unit capable of displaying the video based on the video signal. A head-mounted display device and an input interface that is mechanically detachable from the video signal output device and that can transmit signals from the output interface when the video signal output device is mounted. And a video signal transmission means for transmitting the video signal to the display device, and a control for causing the display unit to display a video via the video signal transmission means based on the video signal input via the input interface. And a display control device having a control unit for performing the above.

  In the present invention, since only the display device is mounted on the head, and the video signal output device and the display control device can be arranged at a position lower than the head, the control unit or the like displays the load of the device on the head. Compared to a display device in which the device is integrated, the size can be significantly reduced. This configuration is optimal for a head-mounted device for mobile users. In addition, the display control device as an interface device between the video signal output device and the display device is detachable from the video signal output device, and is integrated with the video signal output device when the video signal output device is mounted. By having such an external appearance, the display control device is prevented from being caught in a bag, for example. Accordingly, there is no inconvenience in carrying and handling, and no poor contact is caused. Further, since this display control device has many exposed surfaces, the degree of freedom in design for providing the operation unit is high, and the operation unit can be provided at a position with high operability. For example, assuming that the video signal output device and the display control device are carried together, it is possible to provide an operation unit in a place where operability is good. Therefore, the device according to the present invention can improve portability.

  As described above, according to the present invention, the load on the head due to the display device can be reduced, inconvenience in carrying and handling, poor contact, and the like can be eliminated, and the video signal output device and the display device can be eliminated. Since an operation unit for operating the video signal output device can be provided in the interface device between the system and the device, it is possible to provide a highly portable system and device.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic configuration diagram showing a display system according to a first embodiment of the present invention.

  As shown in FIG. 1, the display system of the present embodiment includes a receiving terminal 100 as a video signal output device capable of receiving satellite broadcast waves and reproducing video, a head-mounted HMD display device 200, and a receiving terminal. 100 and a display control device 300 to which the HMD display device 200 can be connected.

  The HMD display device 200 has a shape of glasses having two transparent plates, and an optical unit 101 is provided on the upper end of one transparent plate. An earphone 102 is provided on the frame of the HMD display device 200 at a position in contact with the ear. The display control device 300 includes a cable 210 and a connector unit 220 connected to the receiving terminal 100. The other end of the cable 210 is detachable from the HMD display device 200.

  FIG. 2 is a perspective view showing a connection portion between the receiving terminal and the HMD display device of the display system according to the first embodiment.

  One side 1 of the receiving terminal 100 is provided with an output terminal 2 that is an output interface capable of outputting audio and video signals and supplying power. On the left and right surfaces of the receiving terminal 100 with respect to the side surface 1, groove-shaped engaging portions 30 are provided in a direction perpendicular to the side surface 1.

  The connector portion 220 of the HMD display device 200 is provided with an input terminal 211 as an output interface on a surface 218 facing the one side surface 1. On the surface 212 opposite to the surface 218, a power ON / OFF switch 213, an audio volume adjustment switch 214, and a received broadcast program channel switch 215 as an operation unit are provided. ing. A board (not shown) capable of processing an audio signal and a video signal output from the output terminal 2 is provided inside the connector unit 220. For example, an attachment portion 219 of the cable 210 is provided on the surface 212 of the connector portion 220, and the other end portion of the cable 210 is attached to the attachment portion 219. That is, the switch 213, the switches 214 and 215, and the attachment part 219 of the cable 210 are provided on the same surface 212 in the connector part 220.

  Protrusions 216 that protrude in a direction orthogonal to the surface 212 are provided on both side surfaces of the connector portion 220. A spring member is provided at the tip of the protrusion 216. When the receiving terminal 100 and the connector part 220 are connected, the protrusion 216 is fitted into the engaging part 30, and the receiving terminal 100 is sandwiched from both sides by the protrusion 216 and the spring member. At this time, the output terminal 2 and the input terminal 3 are connected to supply an audio signal, a video signal, and power from the receiving terminal 100 via the cable 210.

  When the connector part 220 is attached to the receiving terminal 100, the shape of the receiving terminal 100 and the connector part 220 is set so as to have an integrated appearance. That is, at the time of mounting, the connector portion does not protrude from the receiving terminal 100 or the like as in the prior art, but the outer surface of the receiving terminal 100 and the outer surface of the connector portion 220 are set to be smoothly continuous. Thereby, when the connector part 220 is attached to the receiving terminal 100, the whole becomes a substantially rectangular parallelepiped shape.

  FIG. 3 is a perspective view when the receiving terminal of the display system according to the first embodiment is used.

  The receiving terminal 100 is configured to be foldable. FIG. 3 shows a state where the lid of the receiving terminal 100 is opened. The receiving terminal 100 includes a power supply unit 4 for supplying power to each unit, a receiving unit 5 that can receive satellite broadcast waves, an operation input unit 6 that can be operated regardless of the open / closed state, and an operation that is performed only in an open state. A possible operation input unit 7, a display unit 8 capable of displaying video, a speaker 9 for outputting sound, and the like are provided.

  FIG. 4 is a block diagram of the display system according to the first embodiment.

  The receiving terminal 100 includes an output terminal 2, a receiving unit 5 incorporating an antenna for receiving satellite broadcast waves, an operation input unit 6, 7, a display unit 8, a speaker 9, an audio reproduction processing unit 10, and a video reproduction processing unit. 11. A microprocessor 12 is provided. The output terminal 2 includes an audio output terminal 13 connected to the audio reproduction processing unit 10, a video output terminal 14 connected to the video reproduction processing unit 11, and a power supply output terminal 15 for supplying power. These terminals are physically connected to each other.

  The receiving unit 5 is used for demodulating a received signal. The audio reproduction processing unit 10 and the video reproduction processing unit 11 are used to decode the audio and video signals demodulated by the reception unit 5, respectively. The audio reproduction processing unit 10 and the video reproduction processing unit 11 are connected to an output terminal 2 for outputting an audio / video signal. That is, the audio reproduction processing unit 10 is connected to the audio output terminal 13, and the video reproduction processing unit 11 is connected to the video output terminal 14. The auxiliary storage unit 16 is used for storing video and data. The operation input unit 6 is a power switch of the receiving terminal 100. The operation input unit 7 is used for selecting a channel CH of satellite broadcasting and adjusting an audio volume. The display unit 8 is used to display the video processed by the video playback processing unit 11. The power supply unit 4 is connected to each unit for supplying power to each unit, and is connected to a power output terminal 15 for supplying power. The microprocessor 12 is used for overall control.

  The connector unit 220 includes an audio volume control unit 201, an HMD display control unit 202, a power supply switching control unit 203, a channel signal generation unit 204, and an input terminal 211. The input terminal 211 includes an audio input terminal 221 connected to the audio output terminal 13, a video input terminal 222 connected to the video output terminal 14, and a power input terminal 223 connected to the power output terminal 15.

  The audio volume control unit 201 is used to control the audio volume based on the audio signal input via the audio input terminal 221. The HMD display control unit 202 is used to control the video signal based on the video signal input via the video input terminal 222. The power supply switching control unit 203 is connected to, for example, the power supply unit 4 via the power supply input terminal 223. By switching the switch 213 connected to the power supply switching control unit 203, the power supply of the receiving terminal 100 from the connector unit 220 side. It can be switched on and off. The channel signal generation unit 204 is configured to be able to output an input signal from the switch 215 to the receiving terminal 100 side.

  The earphone 102 of the HMD display device 200 is connected to the sound volume control unit 201 and configured to output sound from the earphone 102. The optical unit 101 is connected to the HMD display control unit 202, and is configured so that an image can be displayed on the optical unit 101.

  FIG. 5 is a side view showing an optical unit of the HMD display device of the display system according to the first embodiment.

  In the optical unit 101 of the HMD display device 200, a transmissive liquid crystal display (Liquid Crystal Display) 103, a lens 104, and a light emitting diode (LED) 105 are accommodated in a housing (not shown). The lens 104 is used to uniformly guide the light emitted from the LED 105 to the entire surface of the LCD 103. The upper end portion of the transparent plate 107 has a wedge shape that swells toward the front side as it approaches the upper end, and the casing is fixed so as to sandwich the wedge-shaped portion from the front and rear. The LCD 103, the lens 104, and the LED 105 are provided so that the light modulated by the LCD 103 is incident from the upper end surface of the transparent plate 107 and the light reaching the rear surface is totally reflected. The light reflected on the rear surface is totally reflected also on the front surface, and is set so as to be incident on the combiner 106 after repeating several total reflections within the transparent plate 107.

  The combiner 106 is a reflection type hologram element that acts only on the reflected light, and hardly affects the transmitted light. The combiner 106 is set to reflect the light from the LCD 103 and guide it to the right eye E, and to enlarge the image represented by the light from the LCD 103. The right eye E also receives light from the outside that passes through the transparent plate 107 and the combiner 106. The right eye E is provided with an enlarged image of the image of the outside world and the image of the LCD 103 that overlaps the center of the image. Only the image of the outside world is provided to the user's left eye.

  Since the hologram element has high wavelength selectivity, it can be set to reflect or transmit light with almost no loss of light. Moreover, even if it is planar, it is easy to set it so that reflected light or transmitted light is enlarged at a desired magnification. Note that it is also possible to use a half mirror as the combiner 106 by combining with a magnifying optical system.

  Next, the operation of the display system of this embodiment will be described with reference to the drawings.

  When the receiving terminal 100 and the connector part 220 are connected, the protrusion 216 fits into the engaging part 30 and the connector part 220 is attached to the receiving terminal 100.

  Thereby, the audio output terminal 13 and the audio input terminal 221 are connected, the video output terminal 14 and the video input terminal 222 are connected, and the power output terminal 15 and the power input terminal 223 are connected.

  The microprocessor 12 of the receiving terminal 100 determines whether or not the receiving terminal 100 is connected to the HMD display device 200 based on, for example, a signal from a mechanical switch (not shown). This switch is set to generate a signal indicating that it is connected, for example, when the power input terminal 223 is inserted into the power output terminal 15. When it is determined that it is connected, power is supplied from the power supply unit 4 of the receiving terminal 100 to the HMD display device 200 side.

  Accordingly, the receiving terminal 100 demodulates the audio / video signal at the receiving unit 5, transmits the demodulated signal to the audio reproduction processing unit 10 and the video reproduction processing unit 11, and the audio reproduction processing unit 10 and the video reproduction processing unit 11. Then, the demodulated signal is decoded, and sound is output from the earphone 102 via the audio volume control unit 201 and the HMD display control unit 202, or an image is displayed on the optical unit 101.

  As described above, the display system according to the present embodiment can attach only the HMD display device 200 to the head and can arrange the receiving terminal 100 and the display control device 300 at a position lower than the head. The load of such a device can be suppressed to be significantly smaller than that of a display device in which a control unit or the like is integrated with a head mounted display. This is the optimum configuration for a head-mounted display device for mobile users. Further, a display control device 300 as an interface device between the receiving terminal 100 and the HMD display device 200 is detachable from one side 1 of the receiving terminal 100 and is attached to one side 1 of the receiving terminal 100. The display control device 300 will not be caught in a bag, for example, because it has an external appearance integrated with the receiving terminal 100. Accordingly, there is no inconvenience in carrying and handling, and no poor contact is caused. In addition, since the display control device 300 has many exposed surfaces, the degree of freedom in design for providing the switches 213, 214, and 215 is high, and the switches 213, 214, and 215 can be provided at positions where operability is high. . For example, assuming that the receiving terminal 100 and the display control apparatus 300 are carried together, it is possible to provide the switches 213, 214, and 215 in a place with good operability. Therefore, the display system according to the present invention can improve portability.

In the system according to the present embodiment, the following functions and effects can be obtained in addition to the functions and effects.
(1) The display control apparatus 300 includes a pair of protrusions 216 that sandwich the left and right surfaces of the receiving terminal 100 with respect to the side surface 1, and the left and right surfaces of the receiving terminal 100 are engaged with the protrusions 216. 30 is provided. Thereby, the receiving terminal 100 and the display control apparatus 300 can be firmly attached.
(2) The receiving terminal 100 includes an antenna and receiving unit 5 for receiving a broadcast wave including a video signal. Therefore, it is possible to view the latest broadcast program and the like on the go without having to carry video data and the like. The receiving unit 5 can also receive satellite broadcast waves broadcast from satellites. Therefore, it is possible to view the latest satellite broadcast program and the like without selecting a place.
(3) The display control device 300 is provided with switches 213, 214, and 215 for operating the receiving terminal 100. Therefore, operability is improved when the receiving terminal 100 and the display control device 300 are carried together.
(4) The switches 213, 214 and 214 and the attachment part 219 of the cable 210 are provided on the same surface 212 in the display control device 300. For this reason, when the receiving terminal 100 and the display control device 300 are put in a bag or a special case, the surface 212 of the attachment portion 219 of the normal cable 210 is positioned on the open side of the bag or the special case. Etc. are easy to access, and the operability is excellent.
(5) The HMD display device 200 is supplied with power from the power supply unit 4 of the receiving terminal 100 via the display control device 300. For this reason, it is not necessary to provide the HMD display device 200 with a power source, and the HMD display device 200 can be further reduced in weight.
(6) In the display control device 300, the attachment portion 219 of the cable 210 is provided on the surface 212 opposite to the surface 218 facing the one side surface 1 of the receiving terminal 100. For this reason, it becomes possible to make the whole compact compared with the case where the cable 210 is attached to another surface. Moreover, since the opportunity to bend the cable 210 is reduced, it is possible to prevent a failure due to disconnection or the like.
(7) The audio output terminal 13, the video output terminal 14, the power output terminal 15, the audio input terminal 221, the video input terminal 222, and the power input terminal 223 are terminals that are physically connected to each other. For this reason, the output interface and the input interface can be configured at low cost and with high reliability.
(8) Since the audio output terminal 13, the video output terminal 14, and the power output terminal 15 are grouped into one instead of three, the connection operation is facilitated. Note that, when the connectors are separated, the existing standard can be used, so that a versatile system can be configured at low cost. Also in this case, the protrusion 216 and the engaging portion 30 can be easily connected.

  Next, a display system according to a second embodiment of the present invention will be described with reference to the drawings, focusing on different points.

  FIG. 6 is a schematic configuration diagram showing a display system according to the second embodiment of the present invention, and FIG. 7 is a perspective view showing a connection portion between the video reproduction device and the HMD display device of the display system according to the second embodiment. FIG.

  In this embodiment, a portable DVD player 90 is used instead of the receiving terminal 100, and a display control device 70 is used instead of the display control device 300. The display control device 70 includes a cable 71 for connecting the display control device 70 and the portable DVD player 90, and a connector portion 72 provided at one end of the cable 71.

  As shown in FIG. 7, on the top surface of the portable DVD player 90, an operation input unit 86 is provided for operating an audio volume or the like from the outside with the lid folded. On one side 81 of the portable DVD player 90, an audio output terminal 82, a video output terminal 83, and a power output terminal 84 are provided. A groove-like engaging portion 85 is provided on one side 81 of the surface.

  On the surface of the connector portion 72 facing the one side surface 81 at the time of connection, an audio input terminal 74, a video input terminal 75 and a power input terminal 76 connected to the audio output terminal 82, the video output terminal 83 and the power output terminal 84 are provided. It has been. The connector 72 is provided with protrusions 77 and 78 for sandwiching one side 81 side of the portable DVD player 90 from above and below. The protrusion 77 is provided with a rail 79 that is guided to the engaging portion 85 when connected. A cable 71 is connected to a surface 73 opposite to the surface 73 of the connector portion 72 facing the one side surface 81.

  FIG. 8 is a block diagram of a display system according to the second embodiment.

  The audio output terminal 82, the video output terminal 83, and the power output terminal 84 of the portable DVD player 90 are connected to the audio input terminal 74, the video input terminal 75, and the power input terminal 76 of the connector section 72, respectively. The connector unit 72 is provided with an HMD display control unit 7B that controls a video signal input via the video input terminal 75. Electric power is supplied from the power supply unit of the portable DVD player 90 to the HMD display control unit 7B via the power supply output terminal 84 and the power supply input terminal 76. The audio input terminal 74 is connected to the earphone 22 of the HMD display device 30, and the HMD display control unit 7 </ b> B is connected to the optical unit 21. Accordingly, the earphone 22 can output sound and the optical unit 21 can display an image.

  As described above, the display system of this embodiment can hold the portable DVD player 90 from above and below by the protrusions 77 and 78 when the display control device 70 is mounted on one side surface 81 of the portable DVD player 90. . At this time, since the protrusions 77 and 78 are provided so as to increase the contact area between the protrusions 77 and 78 and the portable DVD player 90 as compared with the first embodiment, they are integrated more firmly. be able to.

  Next, a display system according to a third embodiment of the present invention will be described with reference to the drawings focusing on different points.

  FIG. 9 is a schematic perspective view of a display system according to the third embodiment, and FIG. 10 is a perspective view showing a connection portion between the video display device and the HMD display device of the display system according to the third embodiment.

  In the present embodiment, a TV-equipped mobile phone 240 is used instead of the receiving terminal 100, and a display control device 260 is used instead of the display control device 300. The TV-equipped mobile phone 240 can receive at least one signal of terrestrial analog broadcast, terrestrial digital broadcast, and mobile satellite digital broadcast.

  The display control unit 260 includes a cable 241, an operation control device 250, and a connector unit 270. The operation control device 250 is interposed in the cable 241. The cable 241 is used to connect the HMD display device 200 and the connector unit 270. The operation control device 250 is provided with a channel button 244 for selecting a channel CH and a switch 245 for adjusting an audio volume, and a power supply unit 246 capable of supplying power to the HMD display device 200 is incorporated. ing. The connector part 270 is provided with a power supply part 261, and as shown in FIG. 10, an input terminal 262 for inputting audio and video signals is provided. Further, a spring retaining mechanism (not shown) is provided at the distal end of the connector portion 270.

  As shown in FIG. 10, the TV-equipped mobile phone 240 has a foldable structure, an antenna 235 that receives a broadcast wave including a video signal, a display unit 236 that can display an image, and is folded and cannot be operated when folded. In addition, an operation input unit 237 for operating the mobile phone with television 240 and an output terminal 238 for outputting audio and video signals provided on one side surface 239 are provided. A cable 241 is connected to a surface 267 opposite to the surface facing the one side surface 239.

  FIG. 11 is a block diagram of a display system according to the third embodiment.

  The audio output terminal 275, the video output terminal 276, and the power output terminal 277 of the mobile phone 240 with television are connected to the audio input terminal 278, the video input terminal 279, and the power input terminal 280 of the connector unit 270, respectively. Power is supplied from the TV mobile phone 240 side to the HMD display control unit 263 of the connector unit 270 via the power input terminal 280, or power is supplied from the power source unit 261 of the connector unit 270 to the HMD display control unit 263. It is configured to be able to.

  The operation control device 250 includes an audio volume control unit 247, a channel signal generation unit 248, and a power supply unit 282. The audio volume control unit 247 is connected to the audio input terminal 278 and is configured to be able to adjust the volume of the earphone 102 of the HMD display device 200. The power supply unit 282 is configured to be able to supply power to the audio volume control unit 247 and the channel signal generation unit 248. The channel signal generator 248 is configured to output an input signal from the channel button 244 to the mobile phone with television 240 side.

  As described above, in the display system of the present embodiment, the operation control device 250 is provided in the cable 241, and the power supply unit 246 is provided in the operation control device 250. For this reason, even when connecting to a device unsuitable for power supply such as the mobile phone with television 240, the power can be stably supplied to the HMD display device 200, so the load on the mobile phone with television 240 is reduced. Can be suppressed. In addition, since the connector unit 270 includes the power supply unit 261, power can be supplied from the power supply unit 261 to the HMD display device 200 side when the battery of the power supply unit 246 runs out. Furthermore, since the operation control device 250 can be taken out and operated even when the mobile phone with television 240 is housed in a bag, the operability when carried can be improved.

  In the display system of the present embodiment, the operation control device 250 is provided in the cable 241. Thereby, even when the mobile phone with TV 240 and the connector unit 270 are integrated and accommodated in, for example, a bag, the operation control device 250 is operated outside the bag to improve the operability when being carried. be able to.

  In this embodiment, by operating the switches 244 and 245, the TV mobile phone 240 can be operated to display broadcasts of different channels on the HMD display device 200. For this reason, when the folded mobile phone with television 240 and the display control device 260 are carried together, it is not necessary to open and operate the mobile phone with television 240, so that the operability is improved.

  Next, a display system according to a fourth embodiment of the present invention will be described with reference to the drawings focusing on different points.

  FIG. 12 is a block diagram of a display system according to the fourth embodiment.

  In this embodiment, a receiving terminal 400 including an infrared light emitting unit 2A serving as an infrared port is used instead of the receiving terminal 100, and a display control device 320 including an infrared light receiving unit 2B is used instead of the display control device 300. It has been.

  The audio reproduction processing unit 10 and the video reproduction processing unit 11 of the receiving terminal 400 are connected to the light emitting elements P1 and P2 of the infrared light emitting unit 2A, respectively. The light emitting elements P1 and P2 are used to modulate the audio signal and the video signal from the audio reproduction processing unit 10 and the video reproduction processing unit 11 into an infrared signal.

  The display control device 320 includes an audio volume control unit 301, an HMD display control unit 302, a power supply unit 303, a channel signal generation unit 304, and a liquid crystal shutter control unit 305 for controlling the liquid crystal shutter 291. The liquid crystal shutter 291 is used to control the amount of light incident on the HMD display device 200.

  The display control device 320 is provided with a density switching switch (not shown), and the liquid crystal shutter control unit 305 is configured to control the liquid crystal density of the liquid crystal shutter 291 by switching the density switching switch.

  The infrared light receiving unit 2B is provided with light receiving elements R1 and R2 capable of receiving infrared rays from the light emitting elements P1 and P2. The power output terminal 15 is connected to the power input terminal 306.

  The channel signal generator 304 is connected to a light emitting element P3 that modulates the channel signal from the channel signal generator 304 into an infrared signal, and the receiving terminal 400 receives and demodulates the infrared signal emitted by the light emitting element P3. An element R3 is provided.

  Next, the operation of the system of the present embodiment will be described with a focus on differences from the above-described embodiment with reference to the drawings.

  When an audio signal and a video signal are respectively output from the audio reproduction processing unit 10 and the video reproduction processing unit 11 of the receiving terminal 400, the light emitting elements P1 and P2 respectively modulate the audio signal and the video signal into an infrared signal. The light receiving elements R1 and R2 of the display control device 320 receive and demodulate infrared signals from the light emitting elements P1 and P2, respectively. As a result, audio and video signals are output from the receiving terminal 400 side to the display control device 320 side, and a channel signal is output from the channel signal generating unit 304 to the receiving terminal 400 side.

  As described above, in the display system of the present embodiment, audio signals and video signals are output using the light emitting elements P1 and P2 and the light receiving elements R1 and R2. Thereby, since it can be set as a structure without an audio | voice output terminal, an audio | voice input terminal, etc., for example, it can prevent that an audio | voice output terminal and an audio | voice input terminal are loaded and damaged when carrying. Moreover, the attachment / detachment between the receiving terminal 400 and the display control device 320 is facilitated, and there is no poor contact. Further, when the receiving terminal 400 is used alone, the appearance is good.

  In the display system of this embodiment, the HMD display device 200 includes a liquid crystal shutter 291 for controlling the transmittance of external light. Accordingly, by controlling the transmittance of external light when viewing an image outdoors, it is possible to view a high-contrast image regardless of the direction.

  The present invention is not limited to the embodiments described above, and various modifications are possible.

  In the fourth embodiment, the HMD display device 200 including the liquid crystal shutter 291 is exemplified. However, the present invention is not limited to this. For example, an external ND filter (neutral density filter) or the like may be used. This makes it easier to view the video when the video is viewed by the receiving terminal 100 or the like.

  In the first embodiment, the example in which the HMD display device 200 and the display control device 300 are connected via the cable 210 has been described. However, instead of using the cable 210, for example, a low-power transmitter may be used. That is, it can be applied by wire or wireless.

  In the above embodiment, the receiving terminal 100, the portable DVD player 90, and the mobile phone with television 240 are exemplified as the video signal output device. However, the video signal output device is not limited to these, and examples thereof include a video deck.

1 is a schematic configuration diagram showing a display system according to a first embodiment of the present invention. It is a perspective view which shows the connection part of the receiving terminal and HMD display apparatus of the display system which concerns on 1st Embodiment. It is a perspective view at the time of use of the receiving terminal of the display system concerning a 1st embodiment. 1 is a block diagram of a display system according to a first embodiment. It is a side view which shows the optical unit of the HMD display apparatus of the display system which concerns on 1st Embodiment. It is a schematic block diagram which shows the display system which concerns on the 2nd Embodiment of this invention. It is a perspective view which shows the connection part of the video reproduction apparatus and HMD display apparatus of the display system which concerns on 2nd Embodiment. It is a block diagram of the display system which concerns on 2nd Embodiment. It is a schematic block diagram which shows the display system which concerns on the 3rd Embodiment of this invention. It is a perspective view which shows the connection part of the video display apparatus and HMD display apparatus of the display system which concerns on 3rd Embodiment. It is a block diagram of the display system which concerns on 3rd Embodiment. It is a block diagram of the display system which concerns on 4th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... One side surface 5 ... Reception part 30 ... Engagement part 13 ... Audio | voice output terminal 14 ... Image | video output terminal 15 ... Power supply output terminal 100 ... Reception terminal 200 ... HMD display apparatus 300 ... Display control apparatus 221 ... Audio | voice input terminal 222 ... Image | video Input terminal 223 ... Power input terminal 210 ... Cable 216 ... Projection

Claims (14)

A system for playing back video based on a video signal output from a video signal output device having a video signal output interface,
A head-mounted display device having a display unit capable of displaying video based on the video signal;
An input interface that is mechanically detachable from the video signal output device and is capable of transmitting a signal from the output interface when mounted on the video signal output device, and the video signal to the display device Display control means comprising: a video signal transmission means for transmitting video; and a control section for performing control for displaying video on the display section via the video signal transmission means based on the video signal input via the input interface. And a system. The system of claim 1, comprising:
Further comprising the video signal output device provided with the output interface on one side,
The display control device has a pair of protrusions that sandwich the upper or lower surface or the left and right surfaces with respect to one side surface of the video signal output device,
The system according to claim 1, wherein upper and lower surfaces or left and right surfaces of the video signal output device have engaging portions with which the protrusions engage. The system of claim 1, comprising:
The video signal output device includes an antenna and a receiving unit for receiving a broadcast wave including the video signal. The system according to claim 3, wherein
The system, wherein the broadcast wave is broadcast from a satellite. The system of claim 1, comprising:
The display device has a control means for controlling the transmittance of external light. The system of claim 1, comprising:
The display control device includes a first operation unit for operating the video signal output device. The system of claim 6, comprising:
The video signal output device has a foldable structure, and has a second operation unit for operating the video signal output device that is folded and cannot be operated when folded.
The system according to claim 1, wherein the first operation unit includes at least a part of the second operation unit. The system of claim 1, comprising:
The video signal transmission means is a cable,
A system characterized by further comprising an operation control device having a third operation section for operating the video signal output device interposed in the cable. 9. The system according to claim 8, wherein
The system according to claim 1, wherein the first operation unit and an attachment unit to which the cable is attached are provided on the same surface of the display control device. The system of claim 1, comprising:
The display device is supplied with power from a power supply of the video signal output device via the display control device. The system of claim 2, comprising:
The display control device is provided with a cable attachment portion to which a cable as the video signal transmission means is attached on a surface opposite to a surface facing one side surface of the video signal output device. . The system of claim 1, comprising:
The output interface and the input interface are terminals that are physically connected to each other.   The system according to claim 1, wherein the output interface and the input interface are infrared ports. A device for playing back video based on a video signal output from a video signal output device having an output interface for video signals,
A head-mounted display device having a display unit capable of displaying video based on the video signal;
An input interface that is mechanically detachable from the video signal output device and is capable of transmitting a signal from the output interface when mounted on the video signal output device, and the video signal to the display device Display control means comprising: a video signal transmission means for transmitting video; and a control section for performing control for displaying video on the display section via the video signal transmission means based on the video signal input via the input interface. A device comprising: a device.

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