WO2008081978A1

WO2008081978A1 - Cable and method

Info

Publication number: WO2008081978A1
Application number: PCT/JP2007/075382
Authority: WO
Inventors: Masao Yamamoto
Original assignee: Scalar Corporation
Priority date: 2006-12-26
Filing date: 2007-12-26
Publication date: 2008-07-10
Also published as: JP2008160692A

Abstract

Provided is a technique for transmitting image data from a mobile telephone to an image display device when the mobile telephone is connected to the image display device by a USB cable. The technique uses a USB host function to control USB connection between a mobile telephone (2) and an image display device (3) when the USB cable (1) is connected to a USB terminal (11) of the USB cable (1) for a mobile telephone and to a USB terminal (27) of the mobile telephone (2) while a USB terminal (12) of the USB cable (1) for an image display device is connected to a USB terminal (32) of the image display device (3)

Description

Cables and methods

The present invention relates to a technology for making an USB connection between an image display device and a mobile phone. Background of the Invention

Light

With the spread of computers in recent years, display devices like fields

It is common to display presentation data (image data) on the screen of an image display device and make a presentation based on the displayed image data.

When such a presentation is made at a business partner, it is usually done by bringing a personal computer containing presentation image data to the business partner and connecting it to an image display device at the business partner. It is. In this way, to perform presentations on the go, it is necessary to carry a personal computer that contains presentation image data.

In this regard, image data for presentation is put in a mobile phone that is supposed to be carried around, the mobile phone is connected to an image display device at a business partner, etc., and the image data is displayed on the screen of the image display device. Can be displayed without having to bring a computer, which is very convenient.

As a result of studying the method for displaying the image data in the mobile phone on the image display device as necessary as described above, the inventors of the present application have found that the USB (Universal Serial Bus) terminal provided on the mobile phone and the image display device I came up with the idea of connecting the USB terminal provided on the mobile phone to send video and still image data from the mobile phone to the image display device. This USB connection is very widespread in the field of personal computers, regardless of the mobile phone, and it is expected that there will not be much difficulty when it is used by users.

However, both current mobile phones and image display devices are controlled by the host. It is a device that can transmit data only after receiving a control signal, and image data cannot be transmitted from a mobile phone to an image display device simply by connecting the two.

An example of the present invention is to provide a technique for connecting a mobile SIS and an image display device via a USB connection so that image data is transmitted from the mobile phone to the image display device. Disclosure of the invention

The present inventor proposes the following invention in order to solve the above-mentioned problems.

The present invention relates to an image display terminal for connecting to an external screen and an image display device having a display means for displaying an image, and a portable terminal having a USB terminal for USB connection with an external device. »Use a cable to connect the phone.

The cape / re has a terminal for an image display device for connection with the image display terminal, and a USB terminal for a mobile phone for connection with the mobile USB terminal, and the mobile USB terminal for the mobile phone. When the USB terminal for the mobile phone of the cable is connected, and the image display terminal of the image display device and the image display device terminal of the cable are connected, It has a USB host function for controlling the USB connection with the image display device, and transmits image data including at least one of a moving image and a still image from the mobile phone to the image display device. Has USB control means.

Since this cable has USB control means having a USB host function for controlling the USB connection between the mobile phone 15 and the image display device, the cable connects the USB connection between the mobile phone and the image display device. Can be controlled. Therefore, if the mobile phone and the image display device are connected using this cable, the image data of the mobile phone can be transmitted to the image display device via this cable. As a result, it becomes possible to display the image data of the mobile ¾fg on the image display device, so if there is only a mobile phone, a presentation using the image display device at the destination can be performed without bringing a personal computer to the destination. Will be able to.

The image display device connected to the cable of the present invention can display an image. Any device can be used as long as it can be used. For example, it may be a liquid crystal display or a projector that is commercially available, or a display device that is manufactured on the assumption that it is connected to the cable of the present invention. Yo!

The same effects as those achieved by this image display device can be obtained by the following method.

This method includes a mobile phone having a portable USB terminal for making a USB connection with an external β, an image display terminal for making a USB connection with an external device, and an image display device having a display means for displaying an image. And a USB terminal for connecting to the portable USB terminal of the mobile phone of the lift own mobile phone, the image data including at least one of a moving image and a still image being transmitted to the portable electronic device. This is a method that is executed in a cap, comprising: a USB terminal for a mobile phone that is received from a story; an image display terminal for connecting to the image display terminal of a tiff self-image display apparatus; and a computer.

In this method, the computer is connected to the portable USB terminal of the mobile phone and the USB terminal for the Sift mobile phone of the cable, and the image display terminal of the self image display device and the cable A process of controlling USB connection between the mobile phone and the image display device when the terminal for the image display device is connected; ΙΞυ S Β via the connection from the mobile phone to the image display device The image data of the tin mobile phone is transmitted to the image display device via the cable by executing the process of transmitting image data to the mobile phone.

The process of transmitting image data from the mobile phone to the self image display device via the US US connection is performed by transmitting encrypted data obtained by encrypting image data from the mobile phone to the image display device via the tirtEu SB connection. ^ In the process of telling, the encrypted data transmitted from the tiff mobile phone to the image display device does not remain in at least one of the mobile phone, ¾tff self-cable, or tiff self-image display device. A step of transmitting image data from the portable ttfg to the image display device via the USB connection.

The mobile phone further includes display means for displaying an image, and image data specifying means for specifying image data to be transmitted from the mobile phone to the image display device. The USB control means displays an image specifying display for specifying the image data of the mobile phone on the display means of the mobile phone or the display means of the image display device; The image data associated with the display specified by the image data specifying means from among the display for specification may be transmitted from the mobile phone to the image display device.

When transmitting image data from the mobile phone to the image display device, the user needs to specify which image data on the mobile phone side is transmitted prior to transmission. In order for the user to specify the image data on the mobile phone side, and to display the image specifying display for specifying the image data on the display means of the mobile phone or the display means of the image display device, A cable may be configured. Here, the display for specifying the image may be any display as long as the display can specify the image data of the mobile phone. For example, it may be an icon including the title of the image data, or a display for causing the user to input the title name of the image data to be transmitted to the image display device.

The cable further includes image data specifying means for specifying image data to be transmitted from the mobile phone to the IS image display device, and the USB control means specifies the image data of the mobile phone. Image display for display on the display means of the image display device, and image data associated with the one specified by the image data specifying means from the display for identifying selfish images You can send it to the image display device from a telephone.

According to the cable having such a configuration, designation of image data to be transmitted to the image display device from the portable β can be performed in the cape.

The display for specifying the image may be displayed on the display means of the mobile phone “fg”. In addition, the image display device may be configured to specify image data to be transmitted from the mobile phone to the image display device. In this case, it is necessary to provide image data specifying means in the image display device.

The mobile phone further includes compression means for compressing image data including at least one of a moving image and a still image into compressed data, and the cable is transmitted from the mobile phone to the image display device. Image data to be processed by the compression means When the compressed data is compressed, the image data further includes decompression means provided on the image display device terminal side, which decompresses the compressed data into decompressed data, and decompressed by the decompression means. Data may be transmitted to the image display device.

This cable further includes decompression means for decompressing the compressed data sent from the mobile phone into decompressed data.

The data transfer speed of the USB connection is not so fast, but the image data (compressed data) compressed in advance by the compression means of the mobile phone is sent to the image display device terminal side of the cable via Cape Nore. If the decompression means can send out the decompressed data from the image display device terminal to the image display device, transfer of the image data from the mobile phone to the image display device can be easily realized.

The expansion means is provided on the image display device terminal side of the cable in order to make the data transfer speed efficient.

Further, when the image data transmitted from the portable ttM to the image display device is encoded data, the cable decrypts the encrypted data to generate the decoded data. And means for transmitting the decoded data decoded by the decoding means to the image display device.

According to this cable, encrypted data can be sent from the mobile SIS to the cable, and when the image data to be transmitted is 喑数据, this encrypted data can be decrypted and displayed on the image display device.

In other words, if a cable having such decryption means is used, it becomes possible to send not only the image data itself but also highly-encrypted encrypted data as the image data transmitted from the mobile phone to the image display device.

This decoding means can be provided on the side of the image display device terminal, for example, wherever the cable is provided. In this way, the encrypted data received from the mobile phone by the cable can be kept encrypted until it is sent to the image display device, and the security can be further increased.

The mobile phone is an external device having encrypted data for transmission to the image display device. A communication means for receiving the signature data from the server via the network, wherein the USB control means causes the communication means to receive the encrypted data from the external server. It ’s okay.

When transmitting encrypted data from the mobile phone to the image display device, the mobile phone may be provided with an encryption means for encrypting the image data, and the encrypted data generated by the encryption means may be transmitted. As described above, the encrypted data itself may be downloaded via an external server or network, and the downloaded encrypted data may be transmitted. If the encrypted data itself is downloaded from an external server, it is not necessary to provide a password means for the mobile phone. In addition, commercially available mobile phones generally have no encryption means, and the mobile phone itself cannot decrypt this signal data and view the contents of the data, which can further enhance security. it can.

Further, the encrypted data from the mobile phone and the decrypted data transmitted to the image display device may not remain in the cable.

In this way, no encrypted or decrypted data remains in the cable, so a third party cannot take out the data and prevent this data from leaking to the third party. it can.

Further, the USB control means may be configured to transmit the encrypted data from the mobile phone “fg” so that the encrypted data transmitted from the mobile phone to the image display device does not remain in the mobile phone.

In this way, since encrypted data does not remain in the mobile phone, a third party cannot take out the data, and it is possible to prevent such data from leaking to the third party.

The USB control means may be configured to display the decrypted data on the image display device so that the decrypted data of the encrypted data transmitted from the mobile phone to the image display device does not remain in the image display device.

In this way, since no decrypted data remains in the image display device, a third party cannot take out the data, and it is possible to prevent such data from leaking to the third party. These encryption data or decryption data may not remain in the cable or the image display device when, for example, the USB connection is canceled. “When the USB connection is canceled” means that at least one of the USB terminal of the mobile phone or the image display device is removed from the USB terminal for the mobile phone or the terminal for the image display device of the cable, and electrically Including the case where no connection is made.

In addition, when the USB connection is canceled, the encrypted data may not be left in the mobile phone.

In this way, when the USB connection is canceled, the encrypted data sent to the image display device does not remain in the mobile phone, so a third party can retrieve the data from the mobile phone after the USB connection is canceled. It cannot be taken out, and leakage of these data to third parties can be further prevented.

The terminal for the image display device of the above cable may be any terminal as long as it corresponds to the image display terminal. For example, it can be a USB terminal, but can also be an RGB output terminal. In this way, it can be connected to the R GB input terminal that is considered to be equipped with a general image display device. In this case, the image display terminal of the image display device is the R GB input terminal. Brief Description of Drawings

FIG. 1 is a diagram showing a USB cable, an image display device, and a band ttli of this embodiment.

FIG. 2 is a diagram showing the configuration of the operation buttons.

FIG. 3 is a diagram showing the configuration of the US cable of this embodiment.

FIG. 4 is a block diagram showing a function block generated in the US cable of this embodiment.

FIG. 5 is a diagram showing a network including the mobile phone according to the present embodiment.

FIG. 6 is a diagram showing the configuration of the mobile phone of this embodiment.

FIG. 7 is a block diagram showing function blocks generated in the mobile phone of this embodiment.

FIG. 8 is a cross-sectional view showing the inside of the outer frame case of the image display apparatus shown in FIG. FIG. 9 is a diagram showing a configuration of the image display apparatus of the present embodiment.

FIG. 10 is a block diagram showing function blocks generated in the image display apparatus of the present embodiment.

FIG. 11 is a diagram showing an example of a selection screen displayed on the LCD of the image display device of the present embodiment.

FIG. 12 is a diagram showing a modification of the USB cable.

FIG. 13 is a diagram showing a modification of the USB cable. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing a USB cable 1 according to the present embodiment, a mobile phone 2 connected via the USB cable 1, and an image display device 3. As shown in FIG.

First, the configuration of the USB Cape Nore 1 of the present invention will be described.

The USB cable 1 is used to send the image data of the portable ¾ | ¾ 2 connected via the USB cable 1 to the image display device 3.

This USB cable 1 includes a cord-like cable C, a mobile phone USB terminal 1 1 for USB connection with the mobile phone 2, and an image display device USB terminal 1 2 for USB connection with the image display device 3. And a control device 13 that controls USB connection between the mobile phone 2 and the image display device 3. The mobile phone USB terminal 11 is provided on one end of the cable C, and the image display USB terminal 12 is provided on the other end of the cable C. Although not limited to this, the control device 13 is provided so as to be adjacent to the image display device USB terminal 12 in this embodiment. The control device 13 has a power source (not shown), and includes a case 14 formed in a substantially rectangular parallelepiped shape as shown in FIG. Although not limited to this, Case 14 in this embodiment is made of resin. Operation buttons are provided on one side of the case 14 (in this embodiment, the upper side when the mobile phone 2 and the image display device 3 are connected to both ends of the USB cable 1).

FIG. 2 shows the operation buttons 15. The operation button 15 is used to allow the user to select which image data on the mobile phone 2 side is transmitted to the image display device 3. Button. As shown in the figure, the operation button 15 has direction indication buttons 15a to 15d, an image selection button 15e, and an image selection cancel button 15f.

In this embodiment, the case 14 is described as being detachably connected to the cable C and the USB terminal 12 for an image display device. However, the case 14 may be detachably connected thereto.

Also, inside the case 14, the portable ¾Ιί2 and the image display device 3 are connected by USB, and when the is inserted, the USB connection between the portable ¾fg 2 and the image display device 3 is controlled, A circuit (not shown) for controlling the image data to be transmitted from the mobile phone 2 to the image display device 3 via the US B cable 1 is arranged.

As shown in FIG. 3, this circuit comprises a CPU 101, a ROM 102, a RAMI 03, an interface 104, a data decompression circuit 105, a data decoding circuit 106, and a bus 107 for connecting them.

The CPU 101 controls the USB connection between the mobile phone and the image display device 3 according to a predetermined program, and transmits image data from the mobile phone ¾fg 2 to the image display device 3 via the US B cable 1. Control for.

The ROM 102 is a recording medium that records information in a fixed manner.

The RAM 103 is a volatile recording medium, and provides a work area necessary for the CPU 101 to perform the above-described processing and control. In the present embodiment, a frame buffer (not shown) for temporarily recording the image data transmitted from the mobile phone β! Ί 2 in the RAM 03 is provided.

The interface 104 connects the above circuit and the outside, and is connected to the cable C and the operation button 15 in this embodiment.

The data decompression circuit 105 decompresses image data transmitted from the mobile phone 2 that is compressed image data.

The data decryption circuit 106 decrypts the image data transmitted from the mobile phone 2 when it is encrypted data.

When the CPU 101 executes the program recorded in the ROM 102, the following functional blocks are generated. Figure 4 shows this functional block. In case 14, an input information management unit 1 1 1, a control unit 1 1 2, and an output information management unit 1 1 3 are generated.

The input information management unit 1 1 1 has a function of receiving image data or input information from the cable C and the operation buttons 15 and sending it to the control unit 1 1 2.

The control unit 1 1 2 controls the USB connection between the mobile phone 2 and the image display device 3 when the mobile ¾ | ¾ 2 and the image display device 3 are connected by the USB cable 1. 1 Control the image data to be sent from the mobile IS 2 to the image display device 3 via the input information management unit 1 1 1 and the image data sent to the control unit 1 1 2 via the output information It has a function to control to send to the management unit 1 1 3.

Note that the image data transmitted from the mobile phone to the image display device 3 differs depending on the information input from the operation button 15.

In the control unit 1 1 2, a main control unit 1 1 2 A, a temporary recording unit 1 1 2 B, a data extension unit 1 1 2 C, a data decoding unit 1 1 2 D and a force S are generated. .

The main control unit 1 1 2 A is a process (enumeration) for recognizing the mobile phone ¾ | g 2 and the image display device 3 connected via the USB cable 1 to the US Cape 1 Processing to send a list of images that can be sent from the phone 2 to the image display device 3 to the mobile phone 2, processing to send the image data of the image selected by the user from the image list to the mobile phone 2, from mobile ¾fg 2 When the transmitted image data is compressed data, the data decompression unit described later 1 1 2 C decompresses the data, and the mobile phone 2 transmits the image data transmitted to the ^^ Unit 1 1 2 Performs processing for decoding by D, processing for outputting image data, decompressed decompressed data, or decrypted decrypted data to output information management unit 1 1 3.

Such information to be transmitted to the mobile phone 2 and image data to be displayed on the image display device 3 are transmitted from the output information management unit 1 1 3 to the mobile phone 2 via the cable C and the USB terminals 1 1 and 1 2. Or to the image display device 3.

Temporary recording unit 1 1 2 B temporarily records image data and the like transmitted from mobile phone 2.

The data decompression unit 1 1 2 C decompresses the image data received from the mobile phone 2 if it is compressed image data. The data decryption unit 112D decrypts the image data transmitted from the mobile phone 2 as encrypted data.

The temporary recording unit 112B according to the present embodiment temporarily records the decompressed data decompressed by the data decompressing unit 112 and the decrypted data decrypted by the data decrypting unit 112D. ing.

Next, the mobile phone 2 of the present embodiment will be described.

As shown in FIG. 5, the mobile phone 2 used in this embodiment includes a transmission / reception antenna 2 1 force S, a key operation unit 23 for inputting various information on the surface of the implanted case 22, a liquid crystal for displaying images, etc. A display device 24 is provided, and can communicate interactively with servers such as the firmware server S 1 and the encrypted data server S 2 via the Internet N. This mobile phone also has a memory card slot 26 that can accommodate a memory card 25, a 1138 terminal 27, and a TV tuner (not shown).

As shown in FIG. 6, the mobile phone 2 described above includes a CPU 201 that controls the overall operation of the mobile phone 2, a memory such as a RAM 202 and a ROM 203, a radio unit 204, an interface 205, and a bus 206 that connects them. It becomes.

The CPU 201 is a central processing unit and controls the entire mobile phone 2.

The ROM 203 records a program and data necessary for performing the later-described processing executed by the mobile phone 2, and the CPU 201 executes the processing based on this program.

The RAM 202 provides a work area for executing the above-described program.

The wireless unit 204 is for performing wireless communication with an external firmware server S 1 through the Internet N and the data providing server S 2. It is also for receiving TV broadcasts from external base stations.

The interface 205 is for exchanging data with the outside. In this embodiment, the interface 205 is connected to the USB cable 1 and the memory card 25 of the present invention.

In this embodiment, the ROM, header addition program, and data not shown in ROM 203 are displayed. The data compression program is stored.

In this header addition program, image data to be transmitted to the image display device 3 (“image data” includes encrypted data obtained by encrypting image data unless otherwise specified) is still image data. A header is added to indicate whether the data is video data.

When the image data to be transmitted to the image display device 3 is moving image data, the data compression program compresses the data. In the present embodiment, this data compression program can be modified as follows, which is described as a compression only when the image data to be transmitted from the mobile phone 2 to the image display device 3 is a moving image. is there. First, the image data to be transmitted to the image display device 3 can be compressed regardless of whether it is moving image data or still image data. In this case, when the image data to be transmitted from the mobile phone 2 to the image display device 3 is a moving image, the image data to be transmitted from the mobile phone 2 to the image display device 3 is more compressed than when the image data is a still image. You can get higher rates. Further, the image data to be transmitted to the image display device 3 can be not compressed even if it is moving image data or still image data. In this case, the USB cable 1 and the mobile phone 2 may be configured so that they do not have a data decompression circuit 10 5 and a data compression program, respectively.

In the present embodiment, these header addition program and data compression program are provided as firmware from the external firmware providing server S 1 via the wireless unit 204 and the Internet N, and stored in ROM 2 0 3. The mobile phone 2 may be installed in the ROM 2 0 3 of the mobile phone 2 when the mobile phone 2 is manufactured and sold.

Further, the firmware for update may be downloaded from the firmware providing server S 1 as necessary.

In the present embodiment, when the mobile SIS 2 and the image display device 3 are connected to the USB cable 1, the CPU 2 0 1 executes the above-described program, whereby the mobile phone 2 has the functional block shown in FIG. That is, the functions of the input information management unit 2 1 1, the control unit 2 1 2, the communication control unit 2 1 3, and the output information management unit 2 1 4 are generated. In addition, In the present embodiment, it is described that the following function block is generated by executing the above-described program. However, the present invention is not limited to this, and the following function block is cooperated with the program of the mobile phone β! Ί 2. May be generated.

The input information management unit 2 1 1 has a function of sending image data or input information from the memory card 25 or the USB cable 1 to the control unit 2 1 2.

The communication control unit 2 1 3 can download image data including encrypted data from an external server S via the Internet in accordance with an instruction from the control unit 2 1 2. The communication control unit 2 13 also receives radio waves of a predetermined frequency from an external base station in response to an instruction from the control unit 2 12, and demodulates and decodes the received signal.

The control unit 2 1 2 establishes US Β connection by sending various information according to the request of US Β cable 1 when mobile phone 2 and image display device 3 are connected to US Β cable 1. The mobile phone 2 has a function of controlling the mobile phone 2 to transmit image data from the mobile phone 2 to the image display device 3.

In the control unit 2 1 2, a main control unit 2 1 2 Α, a temporary recording unit 2 1 2 B, and a data compression unit 2 1 2 C are generated.

When the mobile phone 2 and the image display device 3 are connected to the USB cable 1, the main control unit 2 1 2 A establishes the USB connection by sending various information in response to requests from the USB cable 1. Processing to send a list of images that can be sent in response to a request from the USB cable 1 to the image display device 3, and to read out the image data selected by the USB cable 1 image selection button 1 5 e (or Internet N Or obtained via a tuner), and a header indicating whether this image data is still video data is attached to the data, and is compressed by the data compression unit 2 1 2 C described later if necessary. And processing to transmit to the image display device 3 via the USB cable 1 is executed.

The temporary recording unit 2 1 2 B is image data to be transmitted to the image display device 3 and temporarily receives the image data received through the tuner or the signature data received from the encrypted data providing server S 2. Record. In this embodiment, this temporary recording is performed for the entire still image if the received image data is for a still image. If this data is for a video, it is performed for each frame of the video. In addition, when the received data is encrypted data, it is performed every predetermined bit unit.

When the image data to be transmitted to the image display device 3 is moving image data, the data compression unit 212C compresses the data.

Image data (or compressed image data) to be transmitted to the image display device 3 is transmitted to the image display device 3 through the output information management unit 214 via the USB cable 1.

Next, the configuration of the image display device 3 of the present embodiment will be described.

The image display device 3 is described as a commercially available liquid crystal display in the present embodiment, but is not limited to this, and any image display device may be used as long as it can display an image. For example, you can use a projector or a head-mounted image display device.

As shown in FIG. 1, the image display device 3 according to the present embodiment includes a thin outer frame case 30 formed in a substantially rectangular parallelepiped shape. Although not limited to this, the outer frame case 30 in this embodiment is made of resin, and an LCD 31 for displaying an image is fitted on the front face so that it can be seen from the outside. Further, a USB terminal 32 is provided below the surface on which the LCD 31 is fitted, so that it can be connected to the USB terminal 12 for the image display device of the USB cable 1.

Inside the outer frame case 30, as shown in FIG. 8, a conversion substrate 33, a backlight unit 34, and an LCD 31 are provided.

The conversion board 33 converts image data sent from the outside into something that can be displayed on the LCD 31, and controls the LCD 31.

The backlight unit 34 includes a backlight that illuminates the LCD 31 from behind, and controls the backlight.

The LCD 31 displays a predetermined image that is a moving image or a still image under the control of the conversion board 33.

The conversion board 33 controls an image displayed on the LCD 31. In the present embodiment, the conversion board 33 is composed of a CPU 301, a ROM 30 as shown in FIG. 2, RAM 303, interface 304, and bus 305 for connecting them.

The CPU 301 executes a predetermined process by executing a predetermined program.

The ROM 302 stores a program for operating the CPU 301, data necessary for controlling the image display device 3, and the like.

The RAM 303 serves as a work area for the CPU 301 to perform data processing. In the present embodiment, a frame buffer (not shown) for temporarily recording image data transmitted from the mobile phone 2 via the USB cable 1 in the RAM 303 is provided.

The interface 304 is for exchanging data with the outside. In this embodiment, the interface 304 is connected to the USB cable 1 of this embodiment via the US B terminal 32.

When the CPU 301 executes the program recorded in the ROM 302, the following functional blocks are generated in the outer frame case 30. Figure 10 shows this functional block.

The functional blocks generated in the outer frame case 30 include an input information management unit 311, a control unit 312, and an output information management unit 313.

The input information management unit 311 has a function of sending image data from the USB cable 1 or input information to the control unit 312.

The control unit 312 has a function of controlling the image data sent to the control unit 312 via the input information management unit 311 to be sent to the output information management units 31 and 3. The image data transmitted from the mobile phone 2 to the image display device 3 is determined by the information input from the operation button 15 of the US B — Bull 1, as described above. In the control unit 312, a main control unit 312 A and a temporary recording unit 312 B are generated.

When the mobile phone 2 and the image display device 3 are connected to the USB cable 1, the main control unit 312 A transmits various information in response to requests from the USB cable 1 to establish the US B connection. Processing, input information management part 311 A process for recognizing whether the image data is power movie data that is still image data is executed by a header attached to the image data.

Temporary recording unit 3 1 2 B temporarily records image data transmitted from mobile phone 2 via USB cable 1. In this embodiment, this temporary recording is based on the header attached to the image data. If the image data is still image data, the entire still image is the image data. In some cases, this is done for each frame of the video.

The data recorded in the temporary recording unit 3 1 2 B is output to the LCD 3 1 via the output information management unit 3 1 3 based on the control of the main control unit 3 1 2 A, and an image is displayed. It will be.

Next, a procedure until an image from the mobile phone fS2 is displayed on the LCD 31 of the image display device 3 will be described.

First, the USB connection is established by connecting the mobile phone 2 and the image display device 3 to the USB cable 1 of the present embodiment.

That is, when the user connects the USB terminals 2 7 and 3 2 of the mobile phone 2 and the image display device 3 to the USB terminal 1 1 for the mobile phone and the USB terminal 1 2 for the image display device of the USB cable 1, respectively, 1 main control unit 1 1 2 A starts processing (enumeration) for recognizing the mobile phone IS 2 and the image display device 3 connected to the USB cape / recorder 1. Specifically, the main control unit 1 1 2 A controls the output information management unit 1 1 3 to send a signal requesting information necessary to recognize the connected terminal or device to the USB terminal for mobile phones 1 1 and image display device USB terminal 1 2 to mobile phone 2 and image display device 3 via 2.

When such a signal is transmitted to the mobile phone IS2, the main control unit 2 1 2 A of the mobile phone 2 sends information necessary for recognizing the terminal from the output information management unit 2 1 4 to the USB cable 1 Send to.

Similarly, when the signal is transmitted to the image display device 3, the main control unit 3 1 2 A of the image display device 3 sends information necessary for recognizing the device from the output information management unit 3 1 3. Send to USB cable 1.

When this information is received by USB cable 1, the enumeration process is performed. Is completed, and the image display device 3 can now speak the image data of the mobile phone 2. '

After the enumeration process is completed, the main control unit 1 1 2 A of the USB cable 1 outputs a signal requesting image information that can be transmitted from the mobile phone 2 to the image display device 3. Send to phone 2.

When such a signal is transmitted to the mobile phone 2, the main control unit 2 1 2 A of the mobile phone 2 outputs image information that can be transmitted from the mobile phone 2 to the image display device 3. To the image display device 3 via the USB cable 1.

The main control unit 3 1 2 A of the image display device 3 sends the information transmitted from the mobile phone 2 to the conversion board 3 3 through the output information management unit 3 1 3 and displays it on the L C D 3 1. FIG. 11 is a diagram showing an example of a screen displayed on L CD 31. In this figure, image information that can be transmitted from the mobile phone 2 to the image display device 3 is displayed by icons.

The user selects the icon indicating the image information to be displayed from among the icons displayed on the LCD 31 by operating the direction buttons 15a to 15d of the operation button 15 of the USB cable 1, Image selection button 1 5 Press e. The icons indicating image information are hierarchical. For example, when “memory card” is selected from the icons shown in FIG. 11, the images stored in the memory card 25 are subsequently displayed. An icon list showing information is displayed. If you want to cancel the selection, press the image selection cancel button 15 f to return to the state where no image is selected.

A signal indicating which image is selected by the operation button 15 is sent to the main control unit 1 1 2 A through the input information management unit 1 1 1 of the USB cable 1.

Based on this, the main control unit 1 1 2 A sends a signal requesting transmission of the image selected by the user to the mobile phone 2 from the output information management unit 1 1 3 to the mobile phone 2 via the USB cable 1. To do.

When such a signal is transmitted to the mobile phone 2, the main control unit 2 1 2 A of the mobile phone 2 receives the image data selected by the user by the operation button from the memory card 25 (selected by the user). If the stored image is stored in the internal memory, the image data If the image data is still image data, a header indicating that it is still image data is attached, and the image data is output via the output information management unit 2 14. Send to USB cable 1. On the other hand, when the image data is moving image data, the main control unit 2 1 2 A attaches a header indicating that the image data is moving image data, and the data compression unit 2 1 2 C receives the data. After the image data is compressed, the image data is sent to the USB cable 1 via the output information management unit 2 14.

The main control unit 1 1 2 A of the USB cable 1 is the image data transmitted from the mobile phone 2 through the input information management unit 1 1 1 is not the compressed data or the key number data ^^, the output information management unit 1 1 The image data is transmitted to the image display device 3 via 3.

In this case, the main control unit 3 1 2 A of the image display device 3 uses force movie data in which the image data is still image data by a header attached to the image data transmitted from the USB cable 1. The image data is recognized and sent to the conversion board 3 3 through the output information management unit 3 1 3 to display an appropriate image on the LCD 3 1.

In this way, the image from the mobile phone 2 can be displayed on the LCD 31 of the image display device 3.

On the other hand, the image data transmitted from the mobile βϊί 2 through the input information management unit 1 1 1 is compressed data. ¾ ^ is the main control unit 1 1 2 A of the USB cable 1 2 C decompresses the data to obtain decompressed data (image data before compression), and transmits the decompressed data to the image display device 3 via the output information management unit 1 13. If the image data transmitted from the mobile ¾fg 2 through the input information management unit 1 1 1 is encrypted data, the main control unit 1 1 2 A of the USB cable 1 is connected to the data decryption unit 1 1 2 The data is decrypted by D to be decrypted data (image data before encryption), and the decrypted data is transmitted to the image display device 3 via the output information management unit 1 13. The subsequent steps were as described above.

When the icon selected by the user is “Internet”, the main control unit of the mobile phone 2. 2 1 2 A is the encryption registered in the memory in the mobile phone 2. Data providing server S 2 This information is sent from the output information management unit 2 1 4 to the image display device 3 via the USB cable 1. Based on this information, the main control unit 3 1 2 A of the image display device 3 displays a list of the server No. 2 data providing server S 2 on the LCD 3 1 of the image display device 3. Display. The user selects one of these encrypted data providing servers S 2 by an operation button 15.

Based on this, the main control unit 1 1 2 A transmits a signal for requesting access to the encrypted data providing server S 2 selected by the user to the mobile phone 2 via the output information management unit 1 13.

When such a signal is transmitted to the mobile phone 2, the main control unit 2 1 2 A of the mobile phone 2 controls the communication control unit 2 1 3 to access the Internet N and provides the selected encryption data Access server S 2 and receive encrypted data. In the present embodiment, this 既に data is already attached with a header, and if the data is video data, it is assumed that the data has already been compressed.

The main control unit 2 1 2 A transmits the received encrypted data to the image display device 3 via the output information management unit 2 14. The subsequent procedure is as described above.

When the icon selected by the user is “TV”, the main control unit 2 1 2 A of the mobile phone 2 outputs the channel information registered in the memory in the mobile ttfi 2 as the output information management unit 2 1 4. Send to image display device 3 via USB cable 1. Based on this information, the main control unit 3 1 2 A of the image display device 3 displays the channel list on the L CD 3 1 of the image display device 3. The user selects one of these channels using the operation button 15 of the USB cable 1.

Based on this, the main control unit 1 1 2 A transmits a signal for requesting reception of the channel selected by the user from the output information management unit 1 13 to the mobile phone 2.

When such a signal is transmitted to the mobile phone 2, the main control unit 2 1 2 A of the mobile phone 2 controls the communication control unit 2 1 3 to receive the image data of the selected channel.

The main control unit 2 1 2 A records the received image data in the temporary recording unit 2 1 2 B, attaches a header indicating that the image data is video data, and sends it to the data compression unit 2 1 2 C. After compressing the data which is moving image data, the image data is sent to the USB cable 1 via the output information management unit 2 14. The subsequent procedure is as described above.

In this way, the mobile phone 2 and the image display using the USB cable 1 of the present embodiment If the device 3 is connected, the mobile phone 2 and the image display device 3 can be connected by USB and image data can be sent from the mobile phone 2 to the image display device 3. As a result, the image data of the mobile phone 2 can be displayed on the image display device 3, so that if there is only the mobile phone 2, a presentation can be made using the image display device at the destination without bringing a personal computer to the destination. can do.

Further, when a large-resolution display with a high resolution is used as the image display device 3, a powerful image can be enjoyed when an image from the mobile phone 2, for example, a moving image from a content distribution server is displayed.

In addition, since the USB cable 1 of the present embodiment has the data decryption circuit 10 6, the image data transmitted from the mobile phone 2 to the image display device 3 is not the image data itself but encrypted data with high security. Can send.

Since this data decoding circuit 10 6 is provided on the USB terminal 1 2 side for the image display device in this embodiment, the USB cable 1 sends the encrypted data received from the mobile phone 2 to the image display device 3. It can be kept encrypted until just before, and security can be further increased.

In the present embodiment, the encrypted data itself is downloaded from an external server via a network, and the downloaded encrypted data is transmitted. Therefore, the encrypted data is decrypted in the mobile phone 2 itself, and the encrypted data is decoded. Data contents cannot be seen, and security can be further increased. Also, it takes time to install the encryption program on the mobile phone 2.

Also, the encrypted data sent from the mobile Sfg 2 to the USB cable 1 and the decrypted data decrypted from it are only temporarily recorded in the temporary recording section 1 1 2 B of the USB cable 1, so Decrypted data does not remain in USB cable 1. In addition, the encrypted data ^ The encrypted data received by the mobile phone 2 from the server S 2 is only temporarily recorded in the temporary recording unit 2 1 2 B of the mobile phone 2, so the encrypted data does not remain in the mobile phone 2. . In addition, since the decrypted data sent from the mobile phone 2 to the image display device 3 via the USB cable 1 is only temporarily recorded in the temporary recording unit 3 1 2 B of the image display device 3, the decrypted data is displayed as an image. Does not remain in device 3. _ This prevents third parties from taking out the data, and these encrypted data, It is possible to prevent image data from leaking to a third party.

In the above embodiment, the image data to be transmitted from the mobile phone 2 to the image display device 3 is specified by the US cable 1, but this image data is specified by the mobile phone 2 (of the mobile phone 2). It is also possible to display a list of icons indicating image data to be transmitted to the LCD 3 1 of the liquid crystal display device 2 4 or the image display device 3 and specify it by operating the key operation unit 2 3. Further, an image designation button may be provided on the image display device 3 so that designation is performed.

The list of icons indicating the image data to be transmitted from the cellular phone 2 to the image display device 3 may be displayed in any manner. For example, in the present embodiment, it is described that only the information of the encrypted data ^ server S2 registered in the memory in the mobile phone 2 is displayed in the "Internet" as the icon selected by the user. When the user selects “Internet”, it may be connected to Internet N so that various sites can be searched. Also, instead of displaying a list of icons indicating the image data to be transmitted from the mobile phone 2 to the image display device 3, a display for allowing the user to input the title name of the image data to be transmitted to the image display device 3. For example, the user may input the title name of the image data to be transmitted to the image display device 3 by operating the key operation unit 23 of the mobile phone 2.

In addition, although the mobile phone of this embodiment is described as transmitting after adding a header indicating whether the image data is still image data or moving image data, it is not always necessary to add it. Les.

In addition, the USB cable 1 of the present embodiment has been described as having the control device 13 adjacent to the USB terminal 1 2 for the image display device. However, like the USB cable 4 shown in FIG. The USB terminal 1 2 and the control device 1 3 may be integrally formed. In other words, the USB terminal for the image display device and the control device are accommodated in the same case 43, and the USB terminal 42 for the image display device as shown in FIG. In addition, FIG. 2 shows one side of the case 4 3 of the USB terminal 4 2 for the image display device (for example, the upper surface when the portable ¾fg 2 and the image display device 3 are connected to both ends of the USB cable 4). The operation buttons as shown in are provided to indicate the image information to be displayed. The icon can be selected.

In addition, the terminal of the US B cable 1 of the present embodiment includes a mobile phone US B terminal 11 for USB connection with the mobile phone 2, and an image display apparatus US B for US B connection with the image display device 3. As shown in FIG. 13, when the terminal of the image display device 5 is the analog RGB terminal 52, as shown in FIG. 13, the USB cable 6 is an analog instead of the US B terminal for the image display device. An RGB terminal 62 can be provided. As described above, the analog RGB terminal 62 and the control device 13 may be integrally formed as described above.

Further, although the US B cable 1 of the present embodiment has been described as having a data decompression circuit and a data decoding circuit, it is not always necessary to compress the data from the mobile phone 2 to the image display device 3. Alternatively, a configuration may be adopted in which only unencrypted image data is transmitted.

In the present embodiment, the mobile ¾1¾2 is described as being configured to automatically record the encrypted data downloaded from the encrypted data carrying server S2 in the temporary recording unit 212B. However, the mobile phone 2 may be controlled by the US B cable 1 so that the encrypted data is automatically recorded in the temporary recording unit 212 B. That is, based on the fact that one of the encrypted data servers S 2 has been selected by the user through the operation button 15, the main control unit 112 A of the USB cable 1 accesses the encrypted data »server S 2 selected by the user. A signal for requesting to record the encrypted data downloaded from the 喑 No. data provision server S 2 in the temporary recording unit 212 B is transmitted to the mobile phone 2 via the output information management unit 113. Moyo.

Similarly, the image display device 3 may automatically record the encrypted data temporarily in the temporary recording unit 312 B based on the control of the US B cable 1. In addition, the USB connection between the mobile phone 2 and the image display device 3 via the USB cable 1 as described above is resolved (at least one of the USB terminals 27 and 32 of the mobile phone 2 or the image display device 3 is connected to the USB cable 1 When removed from US Β terminal 11 for portable β! Ί or US Β terminal 12 for image display device, and electrically connected. Data related to the encrypted data (encrypted data and decrypted data) in the USB cable 1, mobile phone 2, and image display device 3. You may be careful not to leave.

Although the present embodiment has been described on the assumption that the encrypted data remains in the USB cable 1, the mobile phone 2, and the image display device 3, this need not necessarily be the case. For example, the data relating to the encrypted data is not left in the USB cable 1 and the image display device 3, but the よい data may be left in the mobile phone 2.

Claims

The scope of the claims

1. An image display terminal for connecting to an external device and an image display device having a display means for displaying an image, and a mobile device having an external device and a portable USB terminal 5 for making a USB connection are provided. A cable for connecting,

A terminal for an image display device for connection with the image display terminal, and a USB terminal for a mobile phone for connection with the mobile USB terminal;

The mobile phone's l mobile phone U S B terminal and the ΙΕίίΙΕ cable of the mobile phone «fg U S

When the B terminal is connected and the image display terminal of the image display device and the image display device terminal of the tin display are connected, the l mobile phone and the image display device A USB control function for controlling USB connection between the mobile phone and the self-image display device for transmitting image data including at least one of a moving image and a still image. Have

cable.

5 2. l The mobile phone further includes display means for displaying an image, and image data specifying means for specifying image data to be transmitted from the mobile phone to the image display device.

The USB control means displays an image for specifying image data of the mobile phone, an image specifying display on the display means of the mobile phone or the display 0 means of the image display device, and Image data associated with the image data designated by the image data designating means is transmitted from the mobile phone to the image display device.

The cable according to claim 1.

3. The tiff cable further has image data designating means for designating image data to be transmitted from the mobile phone to the image display device.

The USB control means causes the display means of the image display device to display an image specifying display for specifying the image denita of the mobile phone, and the image data specifying means from the image specifying display The image data associated with the one specified by is transmitted from the mobile to the image display device. The cable according to claim 1.

4. The mobile phone further includes compression means for compressing image data including at least one of a moving image and a still image into compressed data,

The cable is

When the image data transmitted from the previous mobile phone to the image display device is compressed data compressed by the compression means, the compressed image data is decompressed into decompressed data, the image display device terminal Further comprising decompression means provided on the side, wherein the decompressed data decompressed by the decompression means is transmitted to the image display device.

Claim No. 1! /, And the cable as described in the third section.

5. The cable is

When the image data transmitted from the mobile phone to the image display device is encrypted signal data, the image processing apparatus further includes a decryption means for decrypting the encrypted data into decrypted data;

The decoding data decoded by the decoding means is transmitted to the image display device.

A cable according to any one of claims 1 to 4.

6. The cable according to claim 5, wherein the decoding means is provided on the terminal side for the image display device.

7. The mobile phone further includes communication means for receiving the 喑 data from an external server having encrypted data to be transmitted to the image display device via a network.

The USB control means causes the communication means to receive the 喑 data from a server outside itself.

The cable according to claim 5 or 6.

8. The encrypted data from the mobile «Ιί and the decrypted data sent to the tiff self-image display device are not left in the cable.

The cable according to any one of claims 5 to 7, wherein the cable is defined in claim 5.

9. The US bag control means transmits the image display device from the mobile phone. In order to prevent encrypted data from remaining in the mobile phone, tin mobile data is transmitted from the mobile phone.

A cable according to any one of claims 5 to 8.

1 0. The USB control means displays the decrypted data on the image display device so that decrypted data of the encrypted data transmitted from the mobile phone to the image display device does not remain in the image display device. Have become

A cable according to any one of claims 5 to 9 in claim 5.

1 1. The image display terminal is an R GB input terminal,

The image display device terminal is an R GB output terminal,

A cable according to claim 1 or claim 10 of claim 10.

1 2. A mobile phone equipped with a mobile USB terminal for making a USB connection with an external device, an image display terminal for making a USB connection with the external device, and a table for displaying an image.

-A cape used to make a USB connection with an image display device equipped with a display means, and is a SB terminal for connecting with the mobile USB terminal of the mobile phone, which is used for video and still image A mobile phone USB terminal for receiving image data including at least one from the mobile phone, an image display device terminal for connecting to the image display terminal of the image display device, and a computer, It is a method executed in

The computer is

When the portable USB terminal of the portable telephone and the portable telephone USB terminal of the cable are connected, and the image display terminal of the image display apparatus and the image display terminal of the ttif self-capture are connected. The process of controlling the USB connection between the ffff mobile phone and the image display device,

A process of transmitting image data from the mobile phone to the image display device via the USB connection;

By running

Transmitting image data of the mobile phone to the image display device via the cable;

Method.

1 3. The process of transmitting image data from the mobile phone to the image display device via the USB connection is as follows:

A process of transmitting encrypted data obtained by encoding image data from the mobile phone to the image display device via the USB connection;

The encrypted data transmitted from the mobile phone to the image display device does not remain in at least one of the mobile phone, the cable, or the image display device. Transmitting image data from a mobile phone to the image display device,

The method according to claim 12.