JP2011175583A - Display device and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device and a program for enabling a user to confirm the contents of electronic data with pleasure. <P>SOLUTION: The display device includes a control unit for receiving electronic data via a receiving unit, measuring a distance D by use of a measurement unit, and displaying an image on a display unit on the basis of the received electronic data and the measured distance D. In addition, when the distance D exceeds a first threshold, the control unit displays an overview of the contents of the received electronic data on the display unit, or displays the contents of the received electronic data on the display unit when the distance D does not exceed the first threshold. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a display device and a program.

  As this type of technology, for example, Patent Document 1 discloses a technology for displaying a plurality of images in a corresponding display area of a display device based on image data transmitted from a personal computer via a server device. .

JP 2003-242409 A

  However, the technique described in Patent Document 1 has a problem that it is not interesting when checking the contents of electronic data.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a display device and a program that allow a user to check the contents of electronic data while enjoying it.

In order to solve the above problems, a display device according to the first aspect of the present invention provides:
A display unit;
A receiving unit for receiving electronic data;
A measurement unit for measuring the distance from the display unit to the user;
Control means for receiving the electronic data via the receiving unit, measuring the distance using the measuring unit, and displaying an image on the display unit based on the received electronic data and the measured distance; ,
With
The control means includes
When the distance exceeds the first threshold, an overview of the content represented by the received electronic data is displayed on the display unit,
When the distance does not exceed the first threshold, the content represented by the received electronic data is displayed on the display unit.

In order to solve the above problems, a display device according to the second aspect of the present invention provides:
A display unit;
A receiving unit for receiving image data;
A measurement unit for measuring the distance from the display unit to the user;
Control means for receiving the image data via the receiving unit, measuring the distance using the measuring unit, and displaying an image on the display unit based on the received image data and the measured distance; ,
With
The control means performs image processing for changing the style of the image represented by the image data, and performs image processing with different processing contents depending on the distance, and displays the image after image processing on the display unit.

In order to solve the above problem, a program according to the third aspect of the present invention provides:
A display unit;
A receiving unit for receiving electronic data;
A measurement unit for measuring the distance from the display unit to the user;
To control the computer,
A control step of receiving the electronic data via the receiving unit, measuring the distance using the measuring unit, and displaying an image on the display unit based on the received electronic data and the measured distance. Let
The control step includes
When the distance exceeds the first threshold, an overview of the content represented by the received electronic data is displayed on the display unit,
When the distance does not exceed the first threshold, the content represented by the received electronic data is displayed on the display unit.

In order to solve the above problem, a program according to the fourth aspect of the present invention provides:
A display unit;
A receiving unit for receiving image data;
A measurement unit for measuring the distance from the display unit to the user;
To control the computer,
A control step of receiving the image data via the receiving unit, measuring the distance using the measuring unit, and displaying an image on the display unit based on the received image data and the measured distance; Let
The control step is image processing for changing the style of the image represented by the image data, and performs image processing with different processing contents depending on the distance, and displays the image after image processing on the display unit.

  According to the display device and the program according to the present invention, the user can check the contents of the electronic data while having fun.

It is a figure for demonstrating the structure of the display apparatus which concerns on one embodiment of this invention. It is a figure for demonstrating the hardware constitutions of the display apparatus which concerns on the example of 1 embodiment of this invention. It is a flowchart for demonstrating the image display process which the display apparatus which concerns on the example of 1 embodiment of this invention performs. It is a figure for demonstrating the distance of the display apparatus which concerns on the example of 1 embodiment of this invention, and a user. It is a figure which shows the correspondence table used with the flowchart of FIG. It is an example of the image which the display apparatus which concerns on the example of 1 embodiment of this invention displays on a display part. It is an example of the image which the display apparatus which concerns on the example of 1 embodiment of this invention displays on a display part. It is an example of the image which the display apparatus which concerns on the example of 1 embodiment of this invention displays on a display part. It is an example of the image which the display apparatus which concerns on the example of 1 embodiment of this invention displays on a display part. It is an example of the image which the display apparatus which concerns on the example of 1 embodiment of this invention displays on a display part. It is an example of the image which the display apparatus which concerns on the example of 1 embodiment of this invention displays on a display part. It is an example of the image which the display apparatus which concerns on the example of 1 embodiment of this invention displays on a display part. It is an example of the image which the display apparatus which concerns on the example of 1 embodiment of this invention displays on a display part. It is an example of the image which the display apparatus which concerns on the example of 1 embodiment of this invention displays on a display part.

  Embodiments according to the present invention will be described with reference to the drawings. In addition, this invention is not limited to the following embodiment and drawing. It goes without saying that changes (including addition and deletion of components) can be added to the following embodiments and drawings. Further, in the following description, in order to facilitate understanding of the present invention, description of known unimportant technical matters is appropriately omitted.

  First, the configuration of the display device 100 according to the present embodiment will be described with reference to FIG. In the present embodiment, the display device 100 is a digital photo frame that displays a digital photograph, but may be a persol computer, a telephone with a liquid crystal display, or the like.

  The display device 100 according to the present embodiment is a digital photo frame connected to a network such as the Internet. The display device 100 shown in FIG. 1 receives electronic data via the network 200 and displays a predetermined image. Here, the electronic data is, for example, data (image data) representing e-mail data (e-mail data) or an image (digital photograph image or the like). The image data is appropriately attached to the e-mail and transmitted. Hereinafter, whether the electronic data is e-mail data or image data is appropriately set in advance. For example, when image data is attached to an electronic mail and transmitted, the electronic data is assumed to be image data. For example, when an electronic mail is directly transmitted, the electronic data is assumed to be image data. For example, when an e-mail is transmitted without image data attached, the electronic data is e-mail data.

  As illustrated in FIG. 1, the display device 100 according to the present embodiment includes a control unit 110, a storage unit 120, a display unit 130, a reception unit 140, an operation unit 150, and a measurement unit 160. Although not described below, the display device 100 acquires image data from a memory card such as an SD card and displays an image represented by the acquired image data on the display unit, in the same manner as a normal digital photo frame. A function and a structure for achieving the function (for example, a reading / writing device including a card slot, a media controller, etc.) are provided.

  In the present embodiment, the network 200 is the Internet, but may be a LAN (Local Area Network) or a WAN (Wide Area Network) other than the Internet, for example.

  The control unit 110 controls each unit of the display device 100 and performs image display processing described later. In this image display process, the control unit 110 receives electronic data from the network 200 and measures a distance from the display unit 130 to the user 5 (for example, an image viewer displayed on the display device) by the measurement unit. A process of displaying a predetermined image based on the received electronic data and the measured distance is performed. For example, as shown in FIG. 4, this distance is a distance D from the display surface of the display unit 130 (the surface on which the image is displayed) to the user 5 positioned in front of the display unit 130 (the direction in which the display surface is directed). .

  The storage unit 120 stores data used by the control unit 110. The storage unit 120 may appropriately store data generated by the control unit 110.

  The display unit 130 displays a predetermined image under the control of the control unit 110.

  The receiving unit 140 is connected to the network 200. The receiving unit 140 is for receiving electronic data from the network 200. The control unit 110 receives electronic data via the receiving unit 140.

  The operation unit 150 is operated by the user 5 or the like, and supplies an operation signal corresponding to the operation of the user 5 or the like to the control unit 110. The control unit 110 performs predetermined processing based on the supplied operation signal.

  The measurement unit 160 is attached to the display unit 130, for example, and measures the distance from the display unit 130 to the user 5. The control unit 110 measures the distance from the display unit 130 to the user 5 using the measurement unit 160.

  Next, a hardware configuration of the display device 100 according to the present embodiment will be described with reference to FIG.

  The display device 100 according to the present embodiment includes a CPU 111, a RAM 112, a flash memory 121, a display 131, a receiving device 141, an operation button group 151, a human sensor 161, and a camera 162. Each component of the display device 100 is appropriately connected by a bus 199 or the like.

  The control unit 110 in FIG. 1 includes a CPU 111 and a RAM 112. The RAM 112 functions as a main memory. The RAM 112 is loaded with programs as appropriate, and temporarily stores data used by the CPU 111, data generated by the CPU 111 and supplied to other components (for example, the display 131), and the like. . The CPU 111 controls each component of the display device 100 according to a program (particularly an image display program) loaded in the RAM 112, and performs an image display process described later performed by the control unit 110.

  At least a part of the functions of the CPU 111 may be realized by various dedicated circuits. That is, at least a part of the control unit 110 may be configured by various dedicated circuits. Examples of various dedicated circuits include a DSP (Digital Signal Processor), an encoder, a decoder, and a face detection circuit.

  Note that the image display program may cause the CPU 111 to perform an imaging control process in cooperation with an OS (Operation System). In this case, it is loaded into the RAM 112. Further, the image display program is recorded on a portable storage medium (for example, CD-ROM (Compact Disk Read Only Memory), DVD-ROM (Digital Versatile Disk Read Only Memory)) and installed in the display device 100. Good. In addition, the display device 100 may be supplied to the display device 100 via the network 200.

  The storage medium on which the image display program is recorded becomes a computer-readable program product (a storage medium that can be read by the computer storing the program). The image display program may operate the display device 100 (computer) in which at least a part of the functions of the control unit 110 and the like is realized by a dedicated circuit. That is, the image display program may cause the display device 100 (computer) to perform image display processing described later as a whole.

  The storage unit 120 in FIG. 1 includes a flash memory 121. The flash memory 121 stores a display control program and various data. The display control program is loaded into the RAM 112. Various data are read out to the RAM 112. Further, the flash memory 121 stores data generated by the CPU 111 as appropriate. This data is supplied to the flash memory 121 via the RAM 112. The storage unit 120 may include other storage devices such as a hard disk.

  The display unit 130 in FIG. 1 includes a display 131. The display 131 includes a display panel that displays an image and a drive circuit that drives the display panel. The display data generated by the CPU 111 is supplied to the drive circuit. The drive circuit controls the display panel based on the display data supplied from the CPU 111, and displays an image represented by the display data on the display surface of the display panel. Thereby, the display 131 displays a predetermined image under the control of the CPU 111.

  The receiving unit 140 in FIG. 1 includes a receiving device 141 including a modem, a router, and the like. The CPU 111 receives electronic data from the network 200 via the receiving device 141. Electronic data received via the receiving device 141 is held (temporarily recorded) in the RAM 112 and supplied to the CPU 111.

  The operation unit 150 in FIG. 1 includes an operation button group 151. The operation button group 151 includes one or more operation buttons and a signal output unit (configured by a substrate, a contact point, etc.) that outputs an operation signal corresponding to the button operation of the user 5 on the operation button. The operation button group 151 is controlled by the CPU 111 and supplies an operation signal corresponding to the button operation to the CPU 111. The CPU 111 performs processing according to the operation signal.

  The measurement unit 160 in FIG. 1 includes a human sensor 161 and a camera 162. These are attached to, for example, a housing of the display 131. A distance D from the display 131 (display unit 130) to the user 5 is measured by the human sensor 161 and the camera 162 (see FIG. 4).

  The human sensor 161 is a sensor that reacts when a person is within a predetermined distance (D1) from the display 131 to the front of the display 131 (the direction in which the display surface is directed), and is configured by, for example, an infrared sensor. If the human sensor 161 reacts, the person (user 5) is within a predetermined distance from the display 131, and the human sensor 161 measures the distance from the display to the user 5. The human sensor 161 reacts when a person is within a predetermined distance and supplies a predetermined signal to the CPU 111.

  The camera 162 includes an image sensor such as a charge coupled device (CCD) image sensor or a complementary metal oxide semiconductor (CMOS) image sensor, an AFE (Analog Front End), a DSP, and the like. The camera 162 images the front of the display 131 under the control of the CPU 111 (in this example, it is assumed that the center of the imaging direction is the normal direction of the display surface in particular). Under the control of the CPU 111, the camera 162 generates an imaging signal representing a captured image by the imaging device, performs various processes (performed by AFE, DSP, etc.) on the generated imaging signal, and generates digital still image data. Is generated. The various processes include, for example, correlated double sampling processing, automatic gain control processing performed on the sampled image signal, and analog image signal after automatic gain adjustment. There are analog-to-digital conversion processing for converting a digital signal into a digital signal, and processing for improving image quality such as contour enhancement, auto white balance, and auto iris. Still image data generated by the camera 162 is supplied to the CPU 111 via the RAM 112. The CPU 111 (control unit 110) acquires still image data.

  Note that the processing performed by the DSP (the processing for improving the image quality) may be performed on the control unit 110 side. In this case, data before this processing is supplied from the camera 162 to the control unit 110. The control unit 110 performs this processing on the supplied data by the CPU 111 or by a DSP provided in the control unit 110 as appropriate. In this case, the control unit 110 acquires still image data by generating still image data.

  Next, an example of image display processing performed by the display device 100 will be described with reference to FIG. This process starts when, for example, the display device 100 is turned on and the network 200 is connected to the display device 100 via the receiving unit 140. It is assumed that the display device 100 is automatically connected to the network 200 when the power is turned on.

  When the image display process is started, the control unit 110 determines whether electronic data has been received via the reception unit 140 (step S101). The electronic data is supplied to the control unit 110 via the network 200 and the reception unit 140. The controller 110 receives the electronic data when the electronic data is supplied. When receiving the electronic data, the control unit 110 temporarily records (holds) the electronic data in the RAM 112. At this time, the control unit 110 displays the data indicating the sender of the electronic data (for example, data of the email address of the sender of the email, hereinafter referred to as sender data) together with the electronic data in the RAM 112. Temporarily store electronic data. It is assumed that data indicating the sender is added to the header of electronic data. When the electronic data is electronic mail data or the electronic data is image data attached to the electronic mail, data indicating the sender is added to the header portion of the electronic mail data.

  Control unit 110 stands by until electronic data is received (step S101; NO). When receiving the electronic data (step S101; YES), the control unit 110 measures the distance D from the display unit 130 to the user 5 using the measurement unit 160 (step S102, see FIG. 4).

  Here, the control unit 110 first controls and operates the human sensor 161 to determine whether or not the human sensor 161 has reacted. When the human sensor 161 is not responding (when the predetermined signal indicating this reaction is not supplied to the control unit 110), the user 5 is not within the predetermined distance D1 from the display unit 130, and the control is performed. Since the unit 130 means that the distance D is greater than D1, the control unit 130 generates data (distance data) indicating the distance D where D> D1, and stores the data in the RAM 112.

  When the human sensor 161 reacts (when a predetermined signal indicating this reaction is supplied to the control unit 110), the control unit 110 indicates that the user 5 is within the predetermined distance D1 from the display unit 130. Therefore, in order to measure the distance D in more detail, the control unit 110 controls the camera 162, causes the camera 162 to perform imaging and the above-described processing, and causes the camera 162 to output still image data. Still image data output from the camera 162 is supplied to the control unit 110. The control unit 110 holds still image data in the RAM 112, and uses the held still image data to detect a face in a still image (captured image) represented by the still image data.

  Face detection is performed by template matching using a template image. At this time, the template image is appropriately enlarged and reduced and used for face detection. The template image data is recorded in the storage unit 120, and the control unit 110 reads out the data from the storage unit 120 and uses it. The control unit 110 specifies the distance D based on the detected face size (area). The size of this face can be specified by the size of the template image. As the face size increases, the position of the user 5 is closer to the display unit 130, and the distance D becomes shorter. For example, the control unit 110 calculates the distance D using a relational expression representing the relationship between the size of the face and the distance D, and specifies the distance D, or for each size of the face (predetermined value for the size of the face). The distance D corresponding to the face size is specified by referring to the correspondence table in which the distance D is associated with each range). Data representing a relational expression or correspondence table is recorded in advance in the storage unit 120, and the control unit 110 reads out this data to the RAM 112 and uses it. When the distance D is specified, the control unit 110 generates data (distance data) indicating the specified distance D and stores the data in the RAM 112. If no face is detected, there is a high possibility that the user 5 is not located within the predetermined distance D1, and therefore the control unit 110 has data (distance data) indicating the distance D where D> D1. Is stored in the RAM 112. When a plurality of faces are detected, the control unit 110 identifies the distance D based on the size of the largest face. This is because the user 5 with the face is positioned closest to the display device 100, so that the user 5 may be most interested in the display device 100.

  Here, when the control unit 110 generates and holds the distance data as described above, the control unit 110 measures the distance D by the measurement unit 160. Note that the measurement unit 160 may be configured by a distance sensor such as an infrared sensor, and the control unit 110 may measure the distance D using such a sensor.

  When measuring the distance D, the control unit 110 displays a predetermined image corresponding to the distance D on the display unit 130 based on the measured distance D (step S103). For example, the control unit 110 refers to a correspondence table in which the correspondence relationship between the distance D and the image displayed on the display unit 130 is recorded in advance in the storage unit 120 as shown in FIG. Based on the distance D indicated by the distance data, an image to be displayed on the display unit 130 is specified, and the specified image is displayed on the display unit 130. The control unit 110 reads the correspondence table from the storage unit 120 to the RAM 112 and refers to it. In the correspondence table of FIG. 5, D1> D2> D3> D4> D5, and the distance D is divided into predetermined ranges.

  When the distance D is D> D1 (for example, D1 = 5 m), the control unit 110 refers to the correspondence table of FIG. 5 and, based on the distance D, receives a mail mark (reception indicating that electronic data has been received). Mark) is displayed. At this time, the control unit 110 displays the mail mark on the entire display surface of the display unit 130. The control unit 110 acquires image data representing the mail mark image from the storage unit 120, generates display data based on the image data, supplies the display data to the display unit 130, and displays the mail mark 11 on the display unit 130. (See FIG. 6).

  When the distance D is D1 ≧ D> D2 (for example, D2 = 4 m), the control unit 110 refers to the correspondence table in FIG. 5 and determines the sender of the electronic data held in the RAM 112 based on the distance D. It is specified that a corresponding image (an image showing a sender) is displayed. At this time, the control unit 110 displays an image corresponding to the sender of the electronic data on the display surface of the display unit 130. The image corresponding to the sender is, for example, an image that can uniquely identify the sender, such as an image of the sender's face photograph, and is set in advance. The storage unit 120 stores image data representing an image corresponding to each sender for each sender specified by the sender data. Based on the sender data held in the RAM 112, the control unit 110 acquires image data corresponding to the sender specified by the sender data from the storage unit 120, and generates display data based on the image data. Then, the image is supplied to the display unit 130, and an image (sender's face image 12) corresponding to the sender is displayed on the display unit 130 (see FIG. 7).

  When the distance D is D2 ≧ D> D3 (for example, D3 = 3 m), the control unit 110 refers to the correspondence table of FIG. 5 and, based on the distance D, the image A of the electronic data held in the RAM 112. Specify what to display. At this time, the control unit 110 displays the electronic data image A on the display surface of the display unit 130. The electronic data image A is an image represented by electronic data, and is an image of the first mode. The control unit 110 generates display data representing the image A based on the electronic data held in the RAM 112, supplies the generated display data to the display unit 130, and displays the image A on the display unit 130.

  When the electronic data is image data, this image A is an enlarged image of a part of the image area of the image represented by the image data. In this case, the image area to be enlarged is set in advance, such as the central area of the image represented by the image data. Further, the control unit 110 may detect the face in the image represented by the image data by the above template matching or the like, and set the area including the detected face as an image area. The control unit 110 generates display data representing an image (enlarged image) obtained by enlarging a partial region of the image represented by the image data based on the image data, and supplies the generated display data to the display unit 130. The enlarged image 13 is displayed on the display unit 130 as shown in FIG.

  When the electronic data is electronic mail data, the image A is, for example, a partial image (here, an image of the subject of the electronic mail) of an image represented by the electronic mail data (an image indicating the content of the electronic mail). In this case, the control unit 110 generates display data representing an image of the subject of the e-mail represented by the e-mail data based on the e-mail data, and supplies the generated display data to the display unit 130. FIG. As shown, the subject image 14 is displayed on the display unit 130.

  When the distance D is D3 ≧ D> D4 (for example, D4 = 2m), the control unit 110 refers to the correspondence table in FIG. 5 and, based on the distance D, the image B of the electronic data held in the RAM 112. Specify what to display. At this time, the control unit 110 displays the electronic data image B on the display surface of the display unit 130. The image B of electronic data is an image represented by electronic data and is an image of the second aspect. The control unit 110 generates display data representing the image B based on the electronic data held in the RAM 112, supplies the generated display data to the display unit 130, and displays the image B on the display unit 130.

  When the electronic data is image data, the image B is an image obtained by performing image processing 1 on the image represented by the image data. Image processing 1 (and image processing 2 described later) is processing for changing the style of an image. For example, so-called art conversion processing (used in Photoshop (registered trademark), etc.) for changing the style of an image into a painting style. Image conversion processing), mosaic processing for applying a mosaic to the image, and the like. Note that the image processing 1 is an image processing in which the image subjected to the image processing 1 becomes an image whose content is easier to recognize at a distance of D3 ≧ D> D4, for example, than the image subjected to the image processing 2 described later. If it is. Image processing 1 and image processing 2 may be different types of image processing, that is, processing in which the style of each image after image processing is different. Image processing 1 and image processing 2 may have the same type of image processing and may have different processing intensities. The processing intensity is expressed by, for example, various parameters such as brightness and blur used in image processing, and indicates the degree of change in the image before and after the image processing. For example, as the numerical values of various parameters increase, the processing intensity increases and the degree of change in image processing increases. Note that the image processing 1 and the image processing 2 may have different processing intensities, and the processing strength of the image processing 1 may be larger than that of the image processing 2. Based on the image data, the control unit 110 performs image processing 1 on the image represented by the image data (entire image), generates display data representing the image after the image processing 1 is performed, and generates the generated display. The image data is supplied to the display unit 130, and an image 15 (here, an image subjected to mosaic processing) after image processing 1 is displayed on the display unit 130 as shown in FIG.

  When the electronic data is electronic mail data, this image B is, for example, an image represented by the electronic mail data (an image showing the content of the electronic mail, here, an image of the body of the electronic mail). In this case, the control unit 110 generates display data representing an image of the body text of the email represented by the email data based on the email data, and supplies the generated display data to the display unit 130. FIG. As described above, the text image 16 is displayed on the display unit 130. Note that the image B only needs to include at least the body of the e-mail, and may be an image that further includes the sender, subject, and the like of the e-mail.

  When the distance D is D4 ≧ D> D5 (for example, D5 = 1 m), the control unit 110 refers to the correspondence table of FIG. 5, and based on the distance D, the image C of electronic data held in the RAM 112 is obtained. Specify what to display. At this time, the control unit 110 displays the electronic data image C on the display surface of the display unit 130. The image C of electronic data is an image represented by electronic data, and is an image of the third aspect. The control unit 110 generates display data representing the image C based on the electronic data held in the RAM 112, supplies the generated display data to the display unit 130, and displays the image C on the display unit 130.

  When the electronic data is image data, the image C is an image obtained by performing image processing 2 on the image represented by the image data. The image processing 2 is, for example, art conversion processing, edge enhancement processing for enhancing edges in the image, and the like (for details, refer to the image processing 1 described above). Based on the image data, the control unit 110 performs image processing 2 on the image represented by the image data (entire image), generates display data representing the image after the image processing 2 is performed, and generates the generated display The image data is supplied to the display unit 130, and an image 17 (here, an image with emphasized edges) after the image processing 2 is displayed on the display unit 130 as shown in FIG.

  When the electronic data is electronic mail data, the image C is the same as the image B, for example. In this case, the control unit 110 performs processing similar to that for the image B based on the email data, and displays the image 16 of the body text of the email (see FIG. 11).

  When the distance D is D5 ≧ D, the control unit 110 refers to the correspondence table in FIG. 5 and specifies that the image P is displayed based on the distance D. At this time, the control unit 110 displays the image P on the display surface of the display unit 130.

  When the electronic data is image data, the image P is an image obtained by not performing the image processing 1 and 2 on the image represented by the image data held in the RAM 112 (an image of the fourth aspect, an original image before image processing (here The control unit 110 generates display data representing an image represented by the image data based on the image data, and supplies the generated display data to the display unit 130. 13, the image 18 is displayed on the display unit 130.

  When the electronic data is electronic mail data, this image P is, for example, an image representing a reply mail to the received electronic mail. In this case, the control unit 110 acquires image data representing a reply mail image from the storage unit 120, generates display data based on the image data, supplies the display data to the display unit 130, and sends the reply mail to the display unit 130. The image 19 is displayed (see FIG. 14). Then, the control unit 110 receives a reply mail creation operation by the user 5 via the operation unit 150.

  The control unit 110 performs the process of step S102 again after the process of step S103. In this way, the control unit 110 repeatedly performs the processing of step S102 and step S103 as long as there is no operation for switching to another mode by the user 5.

  As described above, when the distance D exceeds the first threshold value (D3 in this case), the control unit 110 displays an outline of the content represented by the received electronic data on the display unit 130, and the distance D sets the first threshold value. If not, the content represented by the received electronic data is displayed on the display unit 130. The outline of the contents represented by the electronic data is an extracted part of the contents represented by the electronic data (enlarged as necessary), and here is an image A (enlarged image or subject of mail). The content represented by the received electronic data is an image or the like represented by at least part of the electronic data, and when the electronic data is image data, the images represented by the image data are images B, C, and P. When the electronic data is e-mail data, the images B and C are images representing the main part such as the body of the e-mail represented by the e-mail data.

  In the above description, the control unit 110 measures the distance D using the measurement unit 160 and refers to the correspondence table based on the distance D to identify an image to be displayed on the display unit 130. The distance D measured by the 110 using the measuring unit 160 may not be the direct distance as described above, and may have a predetermined correspondence with the distance. For example, the distance D may be expressed by the presence / absence of a response of the human sensor 161, the size of the face of the template, and the like. In this case, for example, the left column of the correspondence table in FIG. 5 includes the presence / absence of the human sensor 161, the size range of the face, and the like.

  In the present embodiment, since the contents of the electronic data are displayed on the display unit 130 as different images according to the distance D between the user 5 and the display device 100, the user 5 can check the contents of the electronic data while having fun. When the distance D exceeds the first threshold value, that is, when the user 5 is far from the display device 100, an overview of the contents of electronic data that can be easily recognized by the user 5 even at a far position is displayed on the display unit 130. Therefore, the user 5 can easily grasp the contents of the received electronic data. Further, when the distance D does not exceed the first threshold, that is, when the user 5 is close to the display device 100, the content of electronic data that can be recognized by the user 5 is displayed on the display unit 130. The user 5 can easily grasp the contents of the received electronic data.

  Further, in the present embodiment, the control unit 110 displays an image indicating the reception of electronic data (here, mail) when the distance D exceeds a second threshold (here, D2) that is larger than the first threshold. When the distance D exceeds the first threshold value and does not exceed the second threshold value, an outline of the contents represented by the electronic data is displayed on the display unit 130. indicate. As a result, when the user 5 is further away from the display device 100, an image showing reception of electronic data that is easy for the user 5 to recognize is displayed on the display unit 130, so that the user 5 receives the electronic data. Easy to grasp.

  In the present embodiment, the control unit 110 receives a reception mark (here, mail) indicating that electronic data has been received when the distance D exceeds a third threshold (D1) that is a value greater than the second threshold. Mark) is displayed on the display unit 130 as an image indicating reception of electronic data, and when the distance D exceeds the second threshold and does not exceed the third threshold, the electronic data specified when the electronic data is received is displayed. Based on the sender, image data representing an image indicating the sender is acquired from the storage unit 120, and the image represented by the acquired image data (here, the sender image) is displayed on the display unit 130 as an image indicating reception of electronic data. indicate. As a result, when the distance D is long, the display device 100 changes the image displayed on the display unit 130 from the reception mark to the image indicating the sender according to the distance D. When the user 5 is at a distant position, the user 5 can easily recognize the reception of the electronic data, and the user 5 can confirm the reception of the electronic data while having fun. Furthermore, since the user 5 can specify the sender by the image showing the sender, the convenience for the user is high.

  In the present embodiment, when the distance D does not exceed the first threshold, the control unit 110 displays the image represented by the image data on the display unit 130 by changing the display mode according to the distance. Here, the images displayed in this way are images B and C that have been subjected to image processing 1 and 2, and an image P that has not been subjected to image processing. In particular, the control unit 110 performs image processing for changing the style of the image represented by the image data, and performs different image processing depending on the distance D (processing intensity of the image processing or the type of image processing). The processed images (images B and C) are displayed on the display unit 130.

  As described above, since the image is displayed on the display unit 130 in such a manner that the user 5 can easily recognize the image content, the user 5 can easily grasp the content of the received image (content of electronic data). In particular, as described above, by adopting image processing that makes it easy for the user 5 to confirm according to the distance D, or by reducing the processing intensity of the image processing as the user 5 approaches the display unit 130, the user 5 Easy to check the contents of the image. In addition, as described above, the control unit 110 performs image processing on the entire image when displaying the image on the display unit 130 and displays the entire image according to the distance D. Since the display mode of the image displayed on the unit 130 changes as the distance of the user 5 to the display unit 130 changes, the user 5 can check the image while having fun. Further, when the distance D does not exceed a predetermined threshold (when D5 or less), the control unit 110 displays the entire image on the display unit 130 without performing image processing. Therefore, when the user 5 is closest The user 5 can appreciate the original image represented by the image data.

  Further, in the present embodiment, the control unit 110, when the distance D does not exceed the fourth threshold value (here, D5) that is smaller than the first threshold value, returns an email reply image (here, image P). Is displayed on the display unit 130, and when the distance D does not exceed the first threshold value and exceeds the fourth threshold value, images including at least the text of the email represented by the email data (here, images B and C) are displayed. Displayed on the display unit 130. Thereby, when the user 5 approaches, the body of the electronic mail can be confirmed, and when the user 5 further approaches, the reply mail can be operated, so that the convenience of the user 5 is high.

  As described above, in the present embodiment, when an e-mail is received, various images are automatically displayed on the display unit 130 according to the distance D. Therefore, the user 5 enjoys viewing images and receives electronic data. Confirmation (including content confirmation) is possible.

  In the above description, the control unit 110 performs two-stage image processing as the image processing, but divides the distance D more finely (divides it more finely than the range of the distance D in the correspondence table of FIG. 5). The image processing may be performed in three or more stages. Further, although the control unit 110 performs two-stage image processing as image processing, the number of divisions of the distance D may be reduced and the image processing may be performed in one stage. Also, the type of image to be displayed can be arbitrarily set, and the image can be omitted as appropriate.

  Further, regarding the distance D, “more than” or “less than” may be appropriately “greater than” or “less than”. As for the threshold value, exceeding the threshold value means appropriately larger than the threshold value or more than the threshold value. “Not exceeding the threshold value” means either less than the threshold value or less than the threshold value as appropriate. For example, when “exceeding the threshold” means greater than or equal to the threshold, “do not exceed the threshold” means less than the threshold.

DESCRIPTION OF SYMBOLS 5 ... User, 100 ... Display apparatus, 110 ... Control part, 120 ... Memory | storage part, 130 ... Display part, 140 ... Reception part, 150 ... Operation part, 160 * ..Measurement unit, 200 ... Network

Claims (8)

A display unit;
A receiving unit for receiving electronic data;
A measurement unit for measuring the distance from the display unit to the user;
Control means for receiving the electronic data via the receiving unit, measuring the distance using the measuring unit, and displaying an image on the display unit based on the received electronic data and the measured distance; ,
With
The control means includes
When the distance exceeds the first threshold, an overview of the content represented by the received electronic data is displayed on the display unit,
When the distance does not exceed the first threshold, the content represented by the received electronic data is displayed on the display unit.
A display device characterized by that. The control means includes
If the distance exceeds a second threshold value that is greater than the first threshold value, an image indicating reception of the electronic data is displayed on the display unit,
When the distance exceeds the first threshold and does not exceed the second threshold, an overview of the content represented by the electronic data is displayed on the display unit.
The display device according to claim 1. The control means, as an image showing reception of the electronic data,
When the distance exceeds a third threshold that is a value greater than the second threshold, a reception mark indicating that the electronic data has been received is displayed on the display unit as an image indicating reception of the electronic data,
If the distance exceeds the second threshold and does not exceed the third threshold, an image representing the sender based on the sender of the electronic data specified when the electronic data is received Data is acquired from the storage unit, and the image represented by the acquired image data is displayed on the display unit as an image indicating reception of the electronic data.
The display device according to claim 2. The electronic data is image data representing a predetermined image,
The control means displays an image represented by the image data on the display unit by changing a display mode according to the distance when the distance does not exceed a first threshold.
The display device according to claim 1, wherein the display device is a display device. The electronic data is email data representing an email,
The control means includes
If the distance does not exceed a fourth threshold value that is smaller than the first threshold value, the reply image of the email is displayed on the display unit,
When the distance does not exceed the first threshold and exceeds the fourth threshold, an image including at least the text of the email represented by the email data is displayed on the display unit.
The display device according to claim 1, wherein the display device is a display device. A display unit;
A receiving unit for receiving image data;
A measurement unit for measuring the distance from the display unit to the user;
Control means for receiving the image data via the receiving unit, measuring the distance using the measuring unit, and displaying an image on the display unit based on the received image data and the measured distance; ,
With
The control means is an image process for changing the style of the image represented by the image data, and performs image processing with different processing contents depending on the distance, and displays the image after image processing on the display unit.
A display device characterized by that. A display unit;
A receiving unit for receiving electronic data;
A measurement unit for measuring the distance from the display unit to the user;
To control the computer,
A control step of receiving the electronic data via the receiving unit, measuring the distance using the measuring unit, and displaying an image on the display unit based on the received electronic data and the measured distance. Let
The control step includes
When the distance exceeds the first threshold, an overview of the content represented by the received electronic data is displayed on the display unit,
When the distance does not exceed the first threshold, the content represented by the received electronic data is displayed on the display unit.
A program characterized by that. A display unit;
A receiving unit for receiving image data;
A measurement unit for measuring the distance from the display unit to the user;
To control the computer,
A control step of receiving the image data via the receiving unit, measuring the distance using the measuring unit, and displaying an image on the display unit based on the received image data and the measured distance; Let
The control step is image processing for changing the style of the image represented by the image data, and performs image processing with different processing contents depending on the distance, and displays the image after image processing on the display unit
A program characterized by that.