JP2009005079A - Display controller, display control method, and display control program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display controller enabling at least either of the transmission or reception of image data to or from a mobile terminal without through a PC or the like. <P>SOLUTION: The display controller, which controls image data display on a display device 15, includes an image sensor 2 for reading an image, an infrared communication module 18 having a reception function for receiving image data transmitted from the mobile terminal 22 and a transmission function for transmitting image data read by the image sensor 2 to the mobile terminal 22, and a video signal generator 9 for outputting image data to the display device 15. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a display control device, a display control method, and a display control program capable of outputting an image read by a reading unit without using a PC (personal computer) or the like to a display device such as a projector.

  Conventionally, presentations have been performed using slides, overhead projectors (OHP), etc., but with the widespread use of PCs, presentations using a combination of a PC and a liquid crystal projector have been performed.

  Even in this case, there is a high demand for using auxiliary materials such as printed materials and handwritten materials, and a display control device combined with a liquid crystal projector and a device capable of reading these materials and outputting read images is required.

  In response to this demand, a so-called document image pickup apparatus that reads an image of a document or the like placed on a document table using a video camera using an area image sensor such as a CCD and outputs read image data as a video signal. There is a camera.

  As shown in FIG. 5, the document imaging apparatus includes a video camera 31 using an area image sensor, a document table 32 on which a document is placed, and an illumination device 33 that illuminates the document placed on the document table 32.

  Such a document imaging device has been commercialized as a device that performs presentation by connecting to a liquid crystal projector or a device that performs image input by connecting to a video conference device.

  As shown in FIG. 6, a display control apparatus using a linear image sensor has also been proposed (see, for example, Patent Document 1).

As shown in FIG. 6, the display control device 34 includes a linear image sensor 35 integrated with a lens for reading an image of a document 43 and a primary color light source (R, G, B), and image information from the linear image sensor 35 as digital data. A / D converter 36 for conversion to A / D, display memory 37 for storing data from the A / D converter 36, video signal generator 38, CPU 39 for controlling the operation of the entire apparatus, ROM 40 for storing a control program for the CPU 39, and operating method The designation switch 41, the display device 42 such as a liquid crystal display, and the document position detector 44 include a sub-scanning drive mechanism 45 and a sub-storage device 46 connected via a USB port.
JP 2001-186302 A

  By the way, portable terminals with an imaging function have become widespread and image data is often handled by portable terminals. In addition, with the increase in the resolution of the image sensor of the mobile terminal, the storage capacity inside the mobile terminal has also increased significantly.

  From such a background, in a presentation or the like, there is an increasing demand for displaying image data captured by a mobile terminal on a projector or the like and whether or not materials used in the presentation can be recorded on the mobile terminal.

  However, the display control device disclosed in Patent Document 1 and the like only outputs image data read from a secondary storage device such as a USB memory, in addition to outputting the read original, and meets the above-described requirements. I can't respond.

  Further, the communication between the display control device and the secondary storage device is time-consuming because the secondary storage device is directly connected to the display control device or connected via a communication cable.

  Furthermore, in the case of a secondary storage device that does not have a display function such as a USB memory, the contents of stored image data and the like cannot be confirmed by the device alone.

  Therefore, the present invention has been made to meet such technical demands, and enables at least one of transmission and reception of image data to and from a portable terminal without using a PC or the like. An object of the present invention is to provide a display control device, a display control method, and a display control program.

  In order to achieve the above object, according to a first aspect of the present invention, in a display control device that performs control to display image data on a display device, a reading means for reading an image and image data transmitted from a portable terminal are received. A communication unit having at least one of a reception function and a transmission function for transmitting image data read by the reading unit to the portable terminal; and an output unit for outputting the image data to the display device. It is characterized by providing.

  The invention according to claim 2 is characterized in that, in claim 1, the communication means communicates with the portable terminal by infrared communication or wireless communication.

  According to a third aspect of the present invention, in the first or second aspect, the communication unit has a function of receiving a command transmitted from the portable terminal, and controls display of the display device based on the received command. It is characterized by.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the encryption unit that encrypts image data transmitted by the transmission function of the communication unit and the image received by the reception function of the communication unit It is characterized by comprising at least one of decoding means for decoding data.

  According to a fifth aspect of the present invention, in the fourth aspect, the image processing apparatus according to the fourth aspect further includes a determination unit that determines whether the image data received by the reception function of the communication unit is encrypted. When it is determined that the image data is encrypted, the received image data is decrypted by the decryption means.

  The invention according to claim 6 is a display control method for performing control to display image data on a display device, a reading step of reading an image, a reception process of receiving image data transmitted from a portable terminal, and the reading A communication step for executing at least one of transmission processes for transmitting the image data read by the means to the portable terminal, and an output step for outputting the image data to the display device. To do.

  The invention according to claim 7 is characterized in that, in claim 6, the communication step communicates with the portable terminal by infrared communication or wireless communication.

  The invention according to claim 8 is the invention according to claim 6 or 7, wherein the communication step executes a process of receiving a command transmitted from the portable terminal, and controls display of the display device based on the received command. It is characterized by.

  The invention according to claim 9 is the image reception apparatus according to any one of claims 6 to 8, wherein the image data transmitted by the transmission process of the communication step is encrypted and the image received by the reception process of the communication step. It comprises at least one of decoding steps for decoding data.

  The invention according to claim 10 includes a determination step of determining whether or not the image data received by the reception process of the communication step is encrypted in claim 9, wherein the received image data is the determination step. When it is determined that the data is encrypted, the received image data is decrypted in the decryption step.

  According to an eleventh aspect of the present invention, in a display control program for performing control to display image data on a display device, a reading step of reading an image, a receiving process of receiving image data transmitted from a portable terminal, and the reading Causing a computer to execute a communication step of executing at least one of transmission processes of transmitting image data read by the means to the portable terminal, and an output step of outputting the image data to the display device It is characterized by.

  According to the present invention, since it has at least one of a reception function for receiving image data transmitted from a portable terminal and a transmission function for transmitting image data read by the reading unit to the portable terminal, It is possible to enable at least one of transmission and reception of image data to and from the portable terminal without using a PC or the like.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram for explaining a display control apparatus which is an example of an embodiment of the present invention.

  The display control apparatus 1 according to the present embodiment includes a linear image sensor 2 as a reading unit, a document position detector 3, and a document driving mechanism 4 serving as both a sub-scanning driving mechanism and a document feeding mechanism.

  Image data of the document 16 read by the linear image sensor 2 is converted into digital data by the A / D converter 5 and stored in the buffer memory 6. The buffer memory 6 may be a semiconductor memory, or a non-volatile memory device such as a hard disk may be used in combination.

  The digital image data stored in the buffer memory 6 is connected to the display control device 1 via a display memory 8 and a video signal generator 9 that sequentially converts the data written in the display memory 8 into a video signal and outputs it. Displayed on a display device 15 such as a liquid crystal projector.

  In the present embodiment, at least two linear image sensors 2 are provided, and both the front and back surfaces can be read at a time by automatically feeding a document 16 and passing through each linear image sensor 2. Even when reading a single-sided printed document or the like, it is possible to read only one side automatically or by operation on the apparatus. Moreover, the apparatus which has only one linear image sensor 2 (only one side) may be sufficient.

  The display control device 1 of the present embodiment includes a display device information reader 10, a CPU 11 that controls the operation of the entire device, a ROM 12 that stores control programs and control data used by the CPU 11, a display performance designation switch 13, and an operation. A method designating switch 14 and an infrared communication module 18 for communicating with the portable terminal 22 are provided.

  Furthermore, the secondary storage device 17 is connected to the display control device 1 of the present embodiment via a USB cable or the like. In the present embodiment, the mobile terminal 22 is a mobile phone or PDA having an image pickup means such as a camera, an image display means such as a liquid crystal display panel, etc., but is not limited to this. As long as it is provided, a mobile terminal without a camera may be used.

  FIG. 2 is a perspective view showing the appearance of the display control device 1 of the present embodiment. As shown in FIG. 2, the display control device 1 includes a USB port 19 for connecting the secondary storage device 17, a display device, and the like. 15 and an infrared communication unit 21 for performing communication with the mobile terminal 22 are arranged.

  In the display control apparatus 1 configured as described above, the CPU 11 loads a program from the ROM 12 in which the control program is stored, reads the image of the document 16 by the image sensor 2, performs image data transmission / reception processing described later, and transmits image data. Encryption processing, determination of whether received image data is encrypted, decryption processing when received image data is encrypted, and the like are performed.

  Here, the image sensor 2 reads an image of the document 16, an instruction to start transmission / reception processing of image data, which will be described later, and an instruction to select whether or not to perform transmission image data encryption processing are the operation method of the display control device 1. This is performed by the user operating the designation switch 14 or an external remote controller (not shown) (hereinafter referred to as an operation unit).

  In the operation unit, it is possible to select whether to set the image data transmission mode or the image data reception mode for the display control apparatus 1.

  Further, in the display device 15, image data stored in the buffer memory 6 is transferred to the display memory 8 as needed by a page operation on the operation unit by the user, and the page is transferred to the display device 15 via the video signal generator 9. The images of the previous page and the next page are displayed in a flipped form. From the image displayed on the display device 15, an image to be transmitted to the mobile terminal 22 can be selected by the operation unit.

  When a reading request is instructed by the operation of the operation unit by the user, the CPU 11 checks whether the document 16 is set via the document position detector 3, and if the document 16 is set, the document drive The image sensor 2 reads an image of the original 16 while the mechanism 4 is driven to move the original 16 in the sub-scanning direction.

  The image data read by the image sensor 2 is photoelectrically converted, and the analog-converted analog voltage value is converted into digital data via the A / D converter 5 to generate image data. The generated image data is Stored in the buffer memory 6.

  When a read request is received once, the next original 16 is automatically read by the linear image sensor 2 when the original 16 is set without waiting for the next request. With this pre-reading function, the image data of a document that has been read can be switched on the display screen on the display device 15 without a reading operation, so that a switching time equivalent to that of a device using an area sensor can be realized.

  The secondary storage device 17 can read the image format file and store the read image data of the document 16.

  Communication between the display control device 1 and the portable terminal 22 is performed from the infrared communication unit 21 via the infrared communication module 18. In this embodiment, communication is performed using infrared communication that is generally used in mobile phones and the like. However, wireless communication means of various standards may be used, particularly Bluetooth (registered trademark) This is preferable because it can be easily mounted on a small portable terminal.

  Next, image data transmission / reception processing between the display control device 1 and the portable terminal 2 will be described with reference to FIGS. 3 and 4.

  FIG. 3 is a flowchart for explaining a process of transmitting image data from the display control device 1 to the portable terminal 22.

  When image data is transmitted from the display control device 1 to the portable terminal 22, the “transmission mode” of the image data is selected and set for the display control device 1 by the operation of the operation unit by the user.

  Next, the operation unit is operated to display an image stored in the buffer memory 6 on the display device 15 and select an image to be transmitted (step S101). Note that the image selection here may be one image or a plurality of images.

  Next, it is selected whether or not to encrypt image data to be transmitted by the operation unit (step S102). When the image data to be transmitted is encrypted, the process proceeds to step S103, and when the encryption is not performed, the process proceeds to step S104.

  In step S103, the image data is encrypted using a known encryption technique, and the process proceeds to step S104.

  In step S <b> 104, the operation unit is operated to instruct the display control device 1 to start transmitting image data, and the image data is transmitted to the portable terminal 22 via the infrared communication unit 21 and the infrared communication module 18.

  Thereby, the image data of the document 16 read by the display control device 1 can be transferred to the portable terminal 22 and stored in the storage area on the portable terminal 22 side. In the case of the portable terminal 22 with a display function, if the image data is encrypted, the image data can be decrypted and then displayed on the display for free browsing.

  FIG. 4 is a flowchart for explaining a process of receiving the image data transmitted from the portable terminal 22 by the display control device 1.

  When the display control device 1 receives the image data transmitted from the portable terminal 22, the “reception mode” of the image data is selected and set for the display control device 1 by the operation of the operation unit by the user.

  When the image data transmitted from the portable terminal 22 via the infrared communication function is received via the infrared communication unit 21 and the infrared communication module 18 (step S201), the process proceeds to step S202, and the image transmitted from the portable terminal 22 is received. Determine whether the data is encrypted.

  Note that the mobile terminal 22 can confirm the image data to be transmitted before transmission by the image display function. Even if this image data is captured and recorded by the imaging means of the mobile terminal 22, it can be transmitted from another device to the mobile terminal. The image data transferred to 22 may be used.

  If it is determined in step S202 that the image data transmitted from the portable terminal 22 is encrypted, the process proceeds to step S203, where the image data is decrypted, and in step S204, the decrypted image data is stored. Store in the buffer memory 6.

  The image data stored in the buffer memory 6 is output as a video signal to the display device 15 such as a projector by the video signal generator 9 via the display memory 8 as required by operation of the operation unit.

  As described above, the present embodiment has a reception function for receiving image data transmitted from the mobile terminal 22 and a transmission function for transmitting image data read by the image sensor 2 to the mobile terminal 22. Therefore, it is possible to transmit and receive image data to and from the portable terminal 22 without using a PC or the like, and the received image data can be displayed on the display device 15.

  As a result, it is possible to display image data captured by the mobile terminal 22 on the display device 15 such as a projector or to record materials used in the presentation on the mobile terminal 22 in a presentation or the like.

  In addition, this invention is not limited to what was illustrated to the said embodiment, In the range which does not deviate from the summary of this invention, it can change suitably.

  For example, the portable terminal 22 not only transmits image data, but also displays the image data stored in the buffer memory 6 of the display control device 1 on the display device 15 to the display device 15 with respect to the display control device 1. It may be possible to instruct instructions such as page turning, rotation display, mirror image reverse display, and redisplay of the displayed image, input switching, and the like.

  These instructions can be realized by the same control as equipment control by infrared communication of a normal remote control, and smooth operation is possible by performing these instructions and image data transmission with the same portable terminal. It becomes.

  The object of the present invention is achieved by executing the following processing. That is, a storage medium that records a program code of software that realizes the functions of the above-described embodiments is supplied to a system or apparatus, and a computer (or CPU, MPU, etc.) of the system or apparatus is stored in the storage medium. This is the process of reading the code.

  In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the program code and the storage medium storing the program code constitute the present invention.

  Moreover, the following can be used as a storage medium for supplying the program code. For example, floppy (registered trademark) disk, hard disk, magneto-optical disk, CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD + RW, magnetic tape, nonvolatile memory card, ROM or the like. Alternatively, the program code may be downloaded via a network.

  Further, the present invention includes a case where the function of the above-described embodiment is realized by executing the program code read by the computer. In addition, an OS (operating system) running on the computer performs part or all of the actual processing based on an instruction of the program code, and the functions of the above-described embodiments are realized by the processing. Is also included.

  Furthermore, a case where the functions of the above-described embodiment are realized by the following processing is also included in the present invention. That is, the program code read from the storage medium is written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer. Thereafter, based on the instruction of the program code, the CPU or the like provided in the function expansion board or function expansion unit performs part or all of the actual processing.

It is a block diagram for demonstrating the display control apparatus which is an example of embodiment of this invention. It is a perspective view which shows the external appearance of the display control apparatus which is an example of embodiment of this invention. It is a flowchart for demonstrating the process which transmits image data to a portable terminal from a display control apparatus. It is a flowchart figure for demonstrating the process which receives the image data transmitted from the portable terminal with a display control apparatus. It is a figure for demonstrating the original document imaging device using the conventional area image sensor. It is a block diagram for demonstrating the display control apparatus using the conventional linear image sensor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Document imaging device 2 Linear image sensor 3 Document position detector 4 Document drive mechanism 5 A / D converter 6 Buffer memory 8 Display memory 9 Video signal generator 10 Display device information reader 11 CPU
12 ROM
13 Display performance specification switch 14 Operation method specification switch (operation unit)
15 Display device 16 Document 17 Sub-storage device 18 Infrared communication module 19 USB port 20 Video output terminal 21 Infrared communication unit 22 Portable terminal

Claims (11)

In a display control device that performs control to display image data on a display device,
Reading means for reading the image;
A communication means having at least one of a reception function for receiving image data transmitted from a portable terminal and a transmission function for transmitting image data read by the reading means to the portable terminal;
An output means for outputting the image data to the display device. The communication means performs communication with the portable terminal by infrared communication or wireless communication.
The display control apparatus according to claim 1. The communication means has a function of receiving a command transmitted from the mobile terminal, and controls display of the display device based on the received command.
The display control apparatus according to claim 1, wherein the display control apparatus is a display control apparatus. It comprises at least one of an encryption means for encrypting image data transmitted by the transmission function of the communication means and a decryption means for decrypting image data received by the reception function of the communication means. The display control apparatus as described in any one of Claims 1-3. A determination unit that determines whether or not the image data received by the reception function of the communication unit is encrypted; and when the determination unit determines that the received image data is encrypted, Decoding the received image data by decoding means;
The display control apparatus according to claim 4. In a display control method for performing control to display image data on a display device,
A reading step for reading the image;
A communication step of executing at least one of a reception process for receiving image data transmitted from a portable terminal and a transmission process for transmitting image data read by the reading unit to the portable terminal;
An output step of outputting the image data to the display device. A display control method comprising: The communication step performs communication with the portable terminal by infrared communication or wireless communication.
The display control method according to claim 6. The communication step executes a process of receiving a command transmitted from the mobile terminal, and controls display of the display device based on the received command.
The display control method according to claim 6 or 7, wherein It comprises at least one of an encryption step for encrypting image data transmitted by the transmission processing of the communication step and a decryption step for decrypting image data received by the reception processing of the communication step. The display control method according to any one of claims 6 to 8. A determination step of determining whether or not the image data received by the reception process of the communication step is encrypted, and when it is determined that the received image data is encrypted in the determination step, Decoding the received image data in a decoding step;
The display control method according to claim 9. In a display control program for performing control to display image data on a display device,
A reading step for reading the image;
A communication step of executing at least one of a reception process for receiving image data transmitted from a portable terminal and a transmission process for transmitting image data read by the reading unit to the portable terminal;
A display control program causing a computer to execute an output step of outputting the image data to the display device.

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