JP5205706B2 - Projection display device and program - Google Patents

Description

The present invention relates to a projection display device and a program for generating a projection image based on an input video signal and displaying the projection image .

  Conventionally, a projector is known as an example of a display device that displays an image. In this projector, light from a light source is modulated by a video signal and projected onto a screen by a projection lens. In the case of a projector, since a lamp is used as a light source, the amount of light of the lamp changes with the usage time, thereby causing a deterioration in the projected image. Further, since the light source becomes a high-temperature heat source, it is necessary to measure the temperature of each part and monitor the abnormality of the device. Therefore, in the projector, it is necessary to perform maintenance and inspection by managing the lamp usage time and the device usage time. Further, when a failure occurs, the temperature of each part and the operating state of the fan are important in examining the cause of the failure.

  Thus, failure diagnosis and maintenance are essential for a projector. For this purpose, it is desirable to store the usage time of the device and the usage time of the lamp inside. In addition, it is desirable to store the temperature of each part and the state of the fan as an error log. When a failure occurs, system information such as stored device usage time, lamp usage time, and error log can be sent online to the support center, so that appropriate failure diagnosis can be performed. it can.

  In addition, when changing the lamp or changing the layout of the screen, it is necessary to reset each part. In this case, it is desirable to be able to save the setting state of each unit so that the setting state can be restored.

For example, as shown in Patent Document 1, a repair service using the Internet has been proposed. By using such a system, it is possible to receive fault diagnosis, repair, and maintenance online using the Internet.
JP 2005-122270 A

  However, in an online repair service using the Internet, it is necessary to connect the projector to the Internet and send the device usage time, lamp usage time, error log, etc. to the support center. For this reason, users who do not have an Internet connection environment cannot receive failure diagnosis and maintenance support. Also, in order to send projector system information using the Internet, it is necessary to connect the projector and a personal computer via a LAN, which is difficult to use in an environment where the projector and the personal computer are separated. Conventionally, backup of system information has been performed with a memory card or the like. However, backup using a memory card or the like is difficult for a user who is not familiar with the Internet or a personal computer. In addition, there are many types and formats of memory cards, and there is a problem in versatility.

SUMMARY OF THE INVENTION An object of the present invention is to project and display a two-dimensional code including an abnormal state and support center information in a projection display device, so that it is possible to immediately cope with the abnormality .

The present invention is a projection display device that generates and displays a projection image based on an input video signal, and when an abnormal state is detected in the projection display device, system information including the abnormal state is obtained. Prior to the projection display of the projection image, log information storage means for storing as log information, the system information stored in the log information storage means is read out, the read system information and the support center information of the device And a generation unit that generates a two-dimensional code including the information, and a predetermined image including the two-dimensional code generated by the generation unit is projected and displayed for a predetermined time prior to the projection display of the projection image. And a projection control means for projecting and displaying the projection image after the projection display for the predetermined time.

According to the present invention, by projecting and displaying a two-dimensional code including an abnormal state and support center information in the projection display device, it is possible to immediately cope with the abnormality.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings, taking a projector as an example of a display device.
<First Embodiment>
FIG. 1 shows a configuration of a projector according to a first embodiment of the present invention. In FIG. 1, an analog video signal is supplied to an input terminal 11. This analog video signal is digitized by the A / D converter 12 and supplied to the control circuit 13. The control circuit 13 controls the entire projector. Various inputs are given from the input key 14 to the control circuit 13.

  The video signal digitized by the A / D converter 12 is supplied to a DMD (Digital Micromirror Device) control circuit 15 via a control circuit 13. The DMD control circuit 15 performs processing such as synchronization separation, YC separation, IP conversion, resolution conversion, color conversion, and keystone correction on the input video signal. Here, YC separation is processing for separating a luminance signal and a chroma signal. IP conversion is conversion from interlace scanning to progressive scanning. The DMD control circuit 15 forms an RGB frame sequential image signal based on the input image signal. This frame sequential image signal is supplied to the DMD element 16 as a DMD drive signal.

  The DMD element 16 is a spatial light modulation element in which a number of minute mirrors are arranged on the surface and the angle can be changed for each pixel. When the DMD drive signal from the DMD control circuit 15 is supplied to the DMD element 16, the angle of the minute mirror on the surface of the DMD element 16 is changed, thereby changing the light path, and turning on / off the light in units of pixels. Is done.

  The color wheel 17 is a wheel that is divided into three colors of R, G, and B. The color wheel 17 is rotated by the DMD control circuit 15 in synchronization with the vertical synchronizing signal of the input video signal.

  The lamp 18 is driven by a lamp driving circuit 19 under the control of the control circuit 13. The light from the lamp 18 is irradiated to the DMD element 16 through the lens 20 and the color wheel 17. Thereby, the DMD element 16 is sequentially irradiated with RGB light in synchronization with the vertical synchronization signal of the input image signal.

  The DMD element 16 is supplied with a frame sequential image signal from the DMD control circuit 15 as a DMD drive signal. The angle of the minute mirror on the surface of the DMD element 16 is changed by the DMD drive signal, and the light path is changed. For this reason, the reflected light of the DMD element 16 is modulated on a pixel basis by the DMD drive signal from the DMD control circuit 15. The light modulated by the DMD drive signal is enlarged as projection light through a projection lens (not shown) and projected onto the projection surface. Thereby, the projection image 21 is projected on the projection surface.

  The projector according to the first embodiment of the present invention is provided with thermistors 31a, 31b, 31c, and 31d that detect the temperature of each place. The detection outputs of the thermistors 31 a to 31 d are sent to the control circuit 13. In addition, fans 32a, 32b, 32c, and 32d are provided for cooling each location. The rotation of the fans 32 a to 32 d is controlled by the control circuit 13.

  The projector according to the first embodiment of the present invention is provided with an information storage memory 33 for storing various system information.

  FIG. 2 shows an example of system information stored in the information storage memory 33. As shown in FIG. 2, the information storage memory 33 stores the serial number of the device, the lamp usage time up to the present, and the device usage time up to the present. Further, the information storage memory 33 includes, as an error log, lamp lighting time, device usage time, detected temperature of the thermistors 31a to 31d, operating state of the fans 32a to 32d, operating state of the DMD element 16, and The power supply operating state is recorded. Further, device setting values such as language setting, input setting, image quality setting, and the like are stored.

  In the first embodiment of the present invention, the contents of the information storage memory 33 are encoded into a two-dimensional barcode by the encoder 34, and an image of the two-dimensional barcode is displayed on the screen when the power is turned on together with the initial screen. . The two-dimensional barcode is, for example, a QR code. Of course, a two-dimensional code other than a QR code or a simple barcode may be used. The two-dimensional barcode image can be used for failure diagnosis, repair, and maintenance, as will be described later.

FIG. 3 is a flowchart showing processing at power-on.
In FIG. 3, when the power is turned on, first, it is checked whether or not the detected temperature of the thermistors 31a to 31d is within a specified value (step S1). When the detected temperatures of the thermistors 31a to 31d exceed the specified value, it is determined that the lamp 18 is turned on dangerously, and the lamp 18 is turned off (step S2). Then, the error log is updated (step S3) and the standby state is set.

  If the detected temperature of the thermistors 31a to 31d is within a specified value in step S1, the lamp 18 is turned on (step S4). Then, the contents of the information storage memory 33 are read (step S5). The contents of the information storage memory 33 are sent to the encoder 34, and the encoder 34 generates image information of a two-dimensional barcode from this information (step S6).

  That is, as shown in FIG. 4A, the serial number of the device, the lamp usage time up to the present time, the device usage time up to the present time, the error log that records the internal state at that time when an error occurs, the device settings System information (setting information) such as a value is read from the information storage memory 33, and this system information (setting information) is converted into two-dimensional barcode information as shown in FIG.

  In FIG. 3, when a two-dimensional barcode image indicating the contents of the information storage memory 33 is generated, the two-dimensional barcode image is projected together with the initial screen (step S7). Then, it is determined whether or not a predetermined set time has elapsed (step S8), and the two-dimensional barcode image and the initial screen are projected for the predetermined set time.

  When a predetermined set time has elapsed, it is checked whether an error has occurred (step S9). If an error has occurred, the lamp 18 is turned off (step S2), the error log is updated (step S3), and a standby state is entered.

  If no error has occurred, normal projection is performed (step S10). During this time, it is determined whether or not the detected temperature of the thermistors 31a to 31d is abnormal (step S11). If an abnormality is detected in the detected temperatures of the thermistors 31a to 31d, it is determined that lighting of the lamp 18 is dangerous, the lamp 18 is turned off (step S2), the error log is updated (step S3), and a standby state is entered.

  As described above, in the projector according to the first embodiment of the present invention, the device serial number, the lamp usage time up to the present time, the device usage time up to the present time, and the error in which the internal state at that time is recorded An information storage memory 33 storing system information such as logs and device setting values is provided. When the power is turned on, the contents of the information storage memory 33 are encoded into a two-dimensional barcode image, It is projected on the screen. By using the image of the two-dimensional barcode, it can be used for failure diagnosis and maintenance of the projector.

  FIG. 5 shows a system configuration when performing failure diagnosis and maintenance of the projector 1 according to the first embodiment of the present invention.

  As shown in FIG. 5, the projector 1 according to the first embodiment of the present invention displays a two-dimensional barcode image 41 together with an initial image 40 such as a manufacturer's logo when the power is turned on. This two-dimensional barcode image 41 includes a device serial number, a lamp usage time up to the present, a device usage time up to the present, an error log that records the internal state at the time of error occurrence, a device setting value, etc. System information is coded.

  When performing failure diagnosis and maintenance of the projector 1, the user takes an image 41 of the two-dimensional barcode displayed when the power is turned on, with the camera-equipped mobile phone terminal 42 owned by the user, and the two-dimensional barcode is displayed. The e-mail 43 attached with the image 41 is sent to the support center 44.

  The support center 44 decodes the image 41 of the two-dimensional barcode attached to the e-mail 43, so that the lamp usage time up to the present time, the equipment usage time up to the present time, and the internal state at the time when an error occurs. Can be obtained, such as an error log in which is recorded, and device setting values. Thereby, failure diagnosis and maintenance of the projector 1 can be performed.

  In the above-described example, when performing failure diagnosis and maintenance of the projector 1, the user takes a two-dimensional barcode image 41 that is displayed when the power is turned on with the mobile phone terminal with camera 42 owned by the user. However, as shown in FIG. 6, the image may be taken with a digital camera 45. In FIG. 6, when performing failure diagnosis and maintenance of the projector 1, the user takes an image 41 of a two-dimensional barcode displayed when the power is turned on with the digital camera 45 owned by the user, and stores this image in the memory. The card 47 is transferred to the personal computer 46, and the personal computer 46 sends an e-mail 43 attached with a two-dimensional barcode image 41 to the support center 44.

  In the example of FIG. 4, the information in the information storage memory 33 is encoded as it is into a two-dimensional barcode image. However, when the information in the information storage memory 33 is encoded into a two-dimensional barcode image, You may make it encode including the address and subject of a service center. That is, some two-dimensional barcodes have a function of starting a mailer and making a transition to a transmission mail creation screen when there is a character string that can be recognized as a mail address in the code. Therefore, as shown in FIG. 7, for example, a service center destination is encoded, and a serial number is included as a subject to generate a two-dimensional barcode. In this way, even if the user does not input an address or a subject, the user can take an e-mail 43 attached with a two-dimensional barcode image 41 only by photographing with the camera-equipped mobile phone terminal 42 owned by the user. Can be sent to.

  In the example of FIG. 4, the system information of the information storage memory 33 is encoded into one two-dimensional barcode image. However, as shown in FIG. It may be divided and encoded into a plurality of two-dimensional barcode images.

<Second Embodiment>
FIG. 9 shows a second embodiment of the present invention.
In this embodiment, a decoder 35 for decoding a two-dimensional barcode in the input video signal and acquiring information is provided. Further, a mode setting key 36 for setting the backup reading mode is provided. In addition, the same code | symbol is attached | subjected to the part similar to the above-mentioned 1st Embodiment, and the description is abbreviate | omitted.

  FIG. 10 is a flowchart showing the operation at power-on according to the second embodiment of the present invention. In FIG. 10, when the power is turned on, first, it is checked whether or not the detected temperature of the thermistors 31a to 31d is within a specified value (step S21). If the detected temperatures of the thermistors 31a to 31d exceed the specified value, it is determined that the lamp 18 is turned on dangerously, and the lamp 18 is turned off (step S22). Then, the error log is updated (step S23), and the standby state is set.

  If the detected temperature of the thermistors 31a to 31d is within the specified value in step S21, the lamp 18 is turned on (step S24). Then, the contents of the information storage memory 33 are read (step S25). The contents of the information storage memory 33 are sent to the encoder 34, and the encoder 34 generates image information of a two-dimensional barcode from this information (step S26).

  When a two-dimensional barcode image indicating the contents of the information storage memory 33 is generated, the two-dimensional barcode image is projected together with the initial screen (step S27). Then, it is determined whether or not a predetermined set time has elapsed (step S28), and the two-dimensional barcode image and the initial screen are projected for the predetermined set time.

  When a predetermined set time has elapsed, it is checked whether an error has occurred (step S29). If an error has occurred, the lamp is turned off (step S22), the error log is updated (step S23), and a standby state is entered.

  If no error has occurred, normal projection is performed (step S30). Then, it is determined whether or not the backup reading mode is set (step S31). If the backup reading mode is not set, it is determined whether or not the detected temperature of the thermistors 31a to 31d is normal (step S32). If there is no abnormality, the process returns to step S30 and normal projection is continued. If an abnormality is detected in the detected temperatures of the thermistors 31a to 31d, it is determined that lighting of the lamp 18 is dangerous, the lamp 18 is turned off (step S22), the error log is updated (step S23), and a standby state is entered.

  When the backup reading mode is set in step S31, the two-dimensional barcode in the input video signal is determined (step S33), and the two-dimensional barcode is decoded by the decoder 35 (step S34).

  Then, it is determined whether or not the decoded information is a set value (step S35). If the set value has been decoded, the set value is changed based on this information (step S36) for storing information. The contents of the memory 33 are rewritten (step S37). If the decoded information is not valid set value information in step S35, the reading failure is displayed (step S38).

  In the second embodiment of the present invention, a decoder 35 for decoding a two-dimensional bar code in an input video signal and obtaining information is provided, and the mode setting key 36 is used to set the backup reading mode. Can do. Thereby, various settings of the projector can be stored by photographing the two-dimensional barcode. In addition, the captured two-dimensional barcode image can be reproduced to return various settings to the previous state.

  FIG. 11 shows a system configuration when various setting values are stored in the second embodiment of the present invention, and FIG. 12 shows a system when setting values are returned based on the stored setting values. The configuration is shown.

  As shown in FIG. 11, a digital camera 145 is prepared when various setting values are stored. The projector 101 projects an initial screen 140 and a two-dimensional barcode image 141 when the power is turned on. The two-dimensional barcode image 141 includes a device serial number, a lamp usage time up to the present time, a device usage time up to the present time, an error log that records the internal state at that time when an error occurs, and a device setting value The system information is encoded. The two-dimensional barcode image 141 when the power is turned on is taken by the digital camera 145, and the memory card 147 on which the two-dimensional barcode image 141 is recorded is stored in the memory card 147 as backup information.

  When various setting values of the projector 101 are restored by backup information, the digital camera 145 and the projector 101 are connected with a cable 148 as shown in FIG. Then, the projector 101 is set to the backup reading mode, and the memory card 147 on which an image at the time of power-on is recorded is attached to the digital camera 145, and the image is reproduced by the digital camera 145.

  When the memory card 147 is attached to the digital camera 145 and played back, the previously recorded power-on image is displayed on the projection screen. This image includes an initial screen 140 and a two-dimensional barcode image 141. The two-dimensional barcode image 141 includes system information at that time.

  As shown in the flowchart in FIG. 10, when the backup reading mode is set, the two-dimensional barcode in the input video signal is determined, the two-dimensional barcode is decoded, and the decoded information is set. If it is a value, the setting value is changed based on this information, and the contents of the information storage memory 33 are updated (steps S31 to S37).

  Therefore, when the backup reading mode is set, the system information is decoded from the two-dimensional barcode image 141 stored in the memory card 147, and various setting values of the projector 101 are based on the setting values of the system information. Is updated. As described above, when the backup reading mode is set, the memory card 147 on which an image when the power is turned on is recorded as backup information, and various setting values of the projector 101 can be returned to the previous setting values.

  Here, although the image captured by the memory card 147 is played back by the digital camera 145, the playback device is not limited to this. Instead of the digital camera 145, it may be played back by a personal computer.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes design and the like within the scope not departing from the gist of the present invention. For example, in the present embodiment, an example has been described in which the timing for displaying a barcode in which the content of the information storage memory is converted is the time when the power is turned on, but the present invention is not limited to this, for example, when a system error occurs. Alternatively, any timing may be set by the user.

  The present invention can be used for online failure diagnosis of a projector and backup of various data of the projector.

It is a block diagram which shows the structure of the 1st Embodiment of this invention. It is explanatory drawing of the system information preserve | saved at the information storage memory. It is a flowchart used for description of the 1st Embodiment of this invention. It is explanatory drawing of an example of the two-dimensional barcode encoding of system information. It is explanatory drawing of an example of the support system of the failure diagnosis using the 1st Embodiment of this invention. It is explanatory drawing of the other example of the support system of failure diagnosis using the 1st Embodiment of this invention. It is explanatory drawing of the other example of two-dimensional barcode encoding of system information. It is explanatory drawing of the further another example of 2D barcode encoding of system information. It is a block diagram which shows the structure of the 2nd Embodiment of this invention. It is a flowchart used for description of the 2nd Embodiment of this invention. It is explanatory drawing at the time of system data backup in an example of the backup system using the 2nd Embodiment of this invention. It is explanatory drawing when returning data in an example of the backup system using the 2nd Embodiment of this invention.

Explanation of symbols

1: Projector
31a to 31d: thermistor,
32a-32d: Fan,
33: Information storage memory,
34: Encoder,
35: Decoder,
36: Mode setting key,
40: initial image,
41: 2D barcode image,
42: Mobile phone terminal with camera,
43: E-mail,
44: Support Center,
45: Digital camera,
46: Personal computer
47: Memory card

Claims (5)

A projection display device that generates and displays a projection image based on an input video signal,
When detecting an abnormal state in the projection display device, log information storage means for storing system information including the abnormal state as log information;
Prior to the projection display of the projection image, the system information stored in the log information storage means is read out, and each information is included based on the read system information and the support center information of the apparatus. Generating means for generating a dimension code;
Projection control for projecting and displaying a predetermined image including the two-dimensional code generated by the generating means for a predetermined time prior to the projection display of the projection image, and projecting and displaying the projection image after the projection display for the predetermined time Means,
Projection display device being characterized in that comprises a. The system information, or use time of the lamp to date, the walk equipment usage time up to the present, and to include the setting value of the equipment,
The projection display device according to claim 1. The support center information includes destination information to the support center.
Projection display device according to claim 1 or 2, characterized in that. Wherein prior to the projection display of the projection image, further seen including discrimination means for discriminating whether the display is in a dangerous condition, and
The generating means generates the two-dimensional barcode when it is determined by the determining means that there is no danger state;
The projection display device according to any one of claims 1 to 3. A program for controlling a computer of a projection display device that generates and displays a projection image based on an input video signal,
The computer,
Log information storage means for storing system information including the abnormal state as log information when an abnormal state is detected in the projection display device;
Prior to the projection display of the projection image, the system information stored in the log information storage means is read out, and each information is included based on the read system information and the support center information of the apparatus. Generating means for generating a dimension code;
Projection control for projecting and displaying a predetermined image including the two-dimensional code generated by the generating means for a predetermined time prior to the projection display of the projection image, and projecting and displaying the projection image after the projection display for the predetermined time means,
A computer-readable program designed to function as a computer.

Images