JP2010008453A - Image display device - Google Patents

Image display device Download PDF

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Publication number
JP2010008453A
JP2010008453A JP2008164100A JP2008164100A JP2010008453A JP 2010008453 A JP2010008453 A JP 2010008453A JP 2008164100 A JP2008164100 A JP 2008164100A JP 2008164100 A JP2008164100 A JP 2008164100A JP 2010008453 A JP2010008453 A JP 2010008453A
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Prior art keywords
image
image display
means
plug
light source
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JP2008164100A
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Japanese (ja)
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JP5206951B2 (en
Inventor
静二 ▲高▼野
Takeharu Kato
Seiji Takano
丈晴 加藤
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Nikon Corp
株式会社ニコン
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Abstract

PROBLEM TO BE SOLVED: To provide a projection type display device which can be brought into a projectable state quickly.
An image display apparatus 1 includes a projection light source 21 and projects and displays an image generated based on an input image signal, and detects insertion of a video plug 2 that inputs the image signal. Based on the output of the video plug detection circuit 11, at least a part of the image processing means configured by the video signal conversion circuit 16 or the like to which an image signal is input via the power supply module 14 and the video plug 2 is activated. I made it.
[Selection] Figure 1

Description

  The present invention relates to an image display device.

2. Description of the Related Art Conventionally, there is known a projection display device capable of projecting an image based on a video signal output from a video camera, an image based on image data recorded on a memory card, or the like (see the following publication). If no memory card is installed or no video signal is being output from the video camera, the lamp inside the projection display device will automatically turn off and the video signal will be output from the video camera, or the memory card will When installed, the lamp automatically lights up and the image is projected onto the screen.
JP 2001-133880 A

  By the way, as one aspect of the operation procedure when preparing the projection display device for projection, for example, a plug for inputting an image signal from the outside can be connected, and then the projection display device can be projected by operating the main switch. It may be in a state. In this case, since the projection display device is in an operating state for the first time by the operation of the main switch, a waiting time such as initialization of the image processing circuit is required. For this reason, it takes a lot of time from the start of the operation until the projection is possible, compared to the case where the plug is inserted after the main switch is operated. In the projection display device, a discharge lamp such as a high-pressure discharge lamp is used as the lamp. Therefore, it takes a long time (for example, about several tens of seconds) from the start of lighting until a stable lighting state is obtained with sufficient brightness. is required.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a projection display device that can quickly make a projection possible state.

  In order to solve the above-mentioned problem, the invention described in claim 1 is an image display device that includes a projection light source and projects and displays an image generated based on an input image signal, and the image signal is input. Plug detecting means for detecting whether or not an input plug is inserted; image processing means for inputting the image signal through the input plug; and when the plug detecting means detects insertion of the input plug, the plug Control means for activating at least part of the image processing means and power supply means for supplying power to the projection light source based on the output of the detection means.

  According to a second aspect of the present invention, in the image display device according to the first aspect, when the insertion of the input plug is detected by the plug detection unit, the control unit turns on the projection light source. To do.

    According to a third aspect of the present invention, in the image display device according to the first aspect, the image display device further includes an operation member that activates at least a part of the image processing unit and the projection light source, and the control unit includes the operation member. When operated, the projection light source is turned on.

  According to a fourth aspect of the present invention, in the image display device according to the third aspect, the image display device further includes a display unit that displays an operation state of the operation member, and at least a part of the image processing unit based on an output of the plug detection unit. And after starting the said power supply means, when the said operation member is not operated, the said control means displays on the said display means that the said operation member is in the operation waiting state.

    According to a fifth aspect of the present invention, in the image display device according to the fourth aspect, when the operation member is not operated within a predetermined time after the operation member is in an operation waiting state, the control means is in a power saving mode. It is characterized by shifting to.

  According to a sixth aspect of the present invention, in the image display device according to any one of the first to fifth aspects, when the insertion of the input plug is not detected by the plug detection means, the control means operates the operation member. And starting at least a part of the image processing means and the power supply means.

  According to the present invention, it is possible to quickly enter a projectable state.

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

  FIG. 2 is a perspective view of the image display apparatus 1 according to the embodiment of the present invention.

  FIG. 2A shows a state before the video plug is inserted, and the display LED (display means) 13 is turned off. FIG. 2B shows a state of waiting for operation of the operation switch (operation member) 12, and the display LED 13 blinks. FIG. 2C shows a projection state, and the display LED 13 is lit.

  An operation switch 12 for turning on / off a power supply module (power supply means) 14 (see FIG. 1) is disposed on the upper surface of the housing 1A of the image display device 1. Further, a jack 30 into which a video plug (input plug) 2 connected to the electric cable 3 is inserted is disposed on the side surface of the housing 1A. Further, a display LED 13 for displaying the operation state of the image display device 1 is disposed on the back surface of the housing 1A. A projection lens (not shown) for projecting an optical image toward the screen 5 is disposed on the front surface of the housing 1A.

  FIG. 1 is a block diagram showing the configuration of the image display device 1.

  The image display apparatus 1 houses a CPU (control means) 10 that is a main control unit. Connected to the CPU 10 are a video plug detection circuit (plug detection means) 11, an operation switch 12, a display LED 13, a projection light source drive circuit 15, a projection optical system 20, a video signal conversion circuit 16, and an image display driver 17. .

  When the video plug 2 for inputting an image signal from the outside is inserted or when the operation switch 12 is pressed, the CPU 10 outputs a power activation signal 10a to output the power module 14, at least the video signal conversion circuit 16, and the image display driver. 17. Either one of the image display elements 22 is activated and the display instruction signal 10b is output to turn on or blink the display LED 13. Further, when the video plug 2 is inserted or when the operation switch 12 is pressed, the CPU 10 turns on the LED light source (projection light source) 21 based on the LED lighting control signal 10c.

  The video plug detection circuit 11 outputs a video plug detection signal 11a to the CPU 10 when the video plug 2 (see FIG. 2) is inserted into the jack 30.

  The projection light source driving circuit 15 controls the power supply to the LED light source 21 based on the LED lighting control signal 10c for controlling the operation of the LED light source 21 from the CPU 10 to turn on and off the LED light source 21.

  The video signal conversion circuit 16 determines whether the image signal 11b is valid or invalid from the synchronization state of the input image signal 11b, and outputs an image valid / invalid signal 16a to the CPU 10. The image signal 11b includes various synchronization signals (such as a horizontal synchronization signal and a vertical synchronization signal) that define the scanning timing of the image signal.

  Further, the video signal conversion circuit 16 performs A / D conversion on the image signal 11 b and outputs it to the image display driver 17 as a digital image signal 16 b.

  The image display driver 17 generates an image signal 17 c for driving the image display element 22 in accordance with the image signal 16 b output from the video signal conversion circuit 16.

  The projection optical system 20 includes an LED light source 21, an image display element 22, and the projection lens described above.

  Compared with a discharge light source lamp, the LED light source 21 can be reduced in size including the power source, can be turned on and off instantaneously, and the load on the light source is reduced even if the brightness change is repeated in a short time. There are many advantages as a light source for an image display device, such as stable light emission and long life.

  The image display element 22 is a liquid crystal light valve, for example, and modulates the light emitted from the LED light source 21 based on the image signal 17c to form an optical image corresponding to the image signal 17c. The optical image formed by the image display element 22 is enlarged and projected onto the screen 5 or the like by the projection lens (see FIG. 2C).

  The video signal conversion circuit 16, the image display driver 17 and the image display element 22 constitute an image processing means.

  Next, a method for detecting the presence or absence of the video plug 2 will be described.

  FIG. 3 is a diagram showing an example of a detection circuit that detects the presence or absence of the video plug 2 for image input.

  The detection circuit includes a video plug 2 and a jack 30. The video plug 2 is a two-pole plug. The video plug 2 includes a chip portion 2A for outputting an image signal 11b to the video signal conversion circuit 16 via a contact terminal 31 of the jack 30 of the image display device 1, an insulating collar portion 2B, and a contact terminal 32 of the jack 30. And a ring portion 2C for outputting a video plug detection signal 11a to the CPU 10 via the CPU 10. A tip portion 2A is provided at the tip of the video plug 2, and an insulating collar portion 2B and a ring portion 2C are provided on the rear side thereof. A sleeve 33 connected to the ground is provided at the insertion port of the jack 30.

  Since the detection circuit is configured as described above, when the video plug 2 is inserted into the jack 30 of the image display device 1, the sleeve 33 and the contact terminal 32 that are connected to the ground in advance are connected via the ring portion 2C. By being connected, the video plug detection signal 11a at the ground level is output, and insertion of the video plug 2 into the jack 30 can be detected.

  In the above detection circuit, the contact terminal 32 is set to the ground level when the video plug 2 is inserted into the jack. However, a jack in which the contact terminal 32 is disconnected from the ground level by the insertion of the video plug 2 may be used. . In this case, the ground level means that the video plug 2 is not inserted.

  FIG. 4 is a timing chart for explaining the operation of the image display apparatus 1.

  The operation of the image display device 1 will be described using a timing chart.

  When in the power saving mode (a state where power is supplied only to the CPU 10), the video plug detection signal 11a (see FIG. 4A) from the video plug detection circuit 11 becomes L level, so that the video plug 2 When the insertion is detected, the CPU 10 activates the power supply module 14 by setting the power activation signal 10a to the H level (see FIG. 4B) (see FIG. 4C).

  When the power supply module 14 is activated, the level of the display instruction signal 10b is switched at a predetermined timing to cause the display LED 13 to blink (see FIG. 4D). As a result, the user can know that the operation switch 12 is waiting to be operated.

  After the display LED 13 blinks, when the operation switch 12 is operated by the user (see FIG. 4E), the LED light source 21 is turned on (see FIG. 4F).

  FIG. 5 is a timing chart for explaining the operation of the conventional image display apparatus.

  The operation of the conventional image display device will be described as a comparative example of the operation of the image display device of the above-described embodiment using this timing chart.

  In the conventional image display device, when the operation of the operation switch (see FIG. 5A) is detected instead of inserting the video plug, the power activation signal becomes H level (see FIG. 5B), and the power supply module Is activated (see FIG. 5C), and the light source is turned on (FIG. 5D). That is, the image display device does not enter a projectable state only by inserting the video plug.

  FIG. 6 is a flowchart for explaining the operation of the image display apparatus according to the embodiment of the present invention. S1 to S11 indicate steps. It is assumed that the image display device 1 is in the power saving mode.

  First, the case where the image display apparatus 1 is activated by operating the operation switch 12 (main switch) will be described.

  In the activation routine (not shown) from the power saving mode, the CPU 10 sets a flag indicating whether or not the activation is due to insertion of a video plug. In the case of activation by the operation switch 12, the activation flag is set to 0. In step S1, it is determined whether this activation flag is 0 or 1.

  If it is determined in step S1 that the operation switch 12 is activated (activation flag = 0) (NO), the CPU 10 proceeds to step S2 and clears the activation flag. In the case of activation by the operation switch 12, since this activation flag is originally 0, there is no point in clearing it, but there is a case where jumping from step S5 to step S2 with the activation flag = 1, so that necessary processing is performed. It is.

  Next, the timer is stopped (S3).

  Thereafter, the display LED 13 is turned on (S4).

  After the above routine, the routine proceeds to another routine (not shown) for turning on the LED light source 21, and the projection light source driving circuit 15 is driven to turn on the LED light source 21.

  Next, a case where the image display device 1 is activated by inserting the video plug 2 will be described.

  If it is determined in step S1 that the video plug 2 is activated (activation flag = 1) (YES), it is determined whether or not the operation switch 12 is on (S5).

  For example, when the operation switch 12 is operated within a predetermined time and it is determined that the operation switch 12 is on (YES), the process proceeds to step 2 and the activation flag is cleared in the same manner as when the operation switch 12 is operated. Thereafter, the timer is stopped (S3), the display LED 13 is turned on from the blinking state (S4), and the routine proceeds to another routine (not shown) for lighting the LED light source 21, and the projection light source drive circuit 15 is turned on. The LED light source 21 is turned on by driving.

  When it is determined that the operation switch 12 is not on (NO), the CPU 10 determines whether or not the display LED 13 is blinking (operation waiting state) (S6). When it is determined that the display LED 13 is blinking (YES), the process proceeds to Step 8.

  When the process proceeds to step 6 for the first time, the display LED 13 is in an off state (the display LED 13 is not blinking (NO)), so the CPU 10 causes the display LED 13 to blink (S7). The user can know that the operation switch 12 is in an operation waiting state by the blinking of the display LED 13.

  Next, it is determined whether or not the timer has started (S8). When it is determined that the timer has started (YES), the process proceeds to step S10.

  When the process proceeds to step S8 for the first time, since the timer is not counting time (the timer is not started (NO)), the CPU 10 starts the timer (S9).

  Next, it is determined whether or not a predetermined time has passed (S10). When it is determined that the predetermined time has not elapsed (NO), the process returns to step S1. At this time, since the activation flag remains set (activation flag = 1), the process proceeds to step S5. When it is determined in step S5 that the operation switch 12 is not operated, steps S1, S5, S6, S8, S10, and S1 are repeated until a predetermined time has elapsed.

  If it is determined in step S5 that the operation switch 12 is operated and the operation switch 12 is on within the predetermined time, the process jumps to step S2 to clear the activation flag. Subsequently, the timer is stopped (S3), and the display LED 13 is turned on (S4).

  After the above routine, the routine proceeds to another routine (not shown) for turning on the LED light source 21, and the projection light source driving circuit 15 is driven to turn on the LED light source 21.

  When it is determined that the predetermined time has elapsed (YES), the power saving transition flag is set (S11), and the image display apparatus 1 enters the power saving mode. At this time, the display LED 13 is turned off, and the user can know that it is in the power saving mode.

  According to this embodiment, power can be supplied to the image processing means or the like by inserting the video plug 2 or operating the operation switch, and the time from the start of preparation for projection to the ready for projection can be shortened. Can do. Further, since the LED is used, it is possible to light up again in a short time even immediately after the LED light source 21 is turned off, and an image can be projected. Furthermore, after the operation switch 12 enters the operation waiting state, the operation shifts to the power saving mode if the operation switch 12 is not operated within a predetermined period, so that power consumption can be suppressed. In addition, although LED was used as a display means in the said embodiment, a display means is not restricted to LED.

FIG. 1 is a block diagram showing a configuration of an image display apparatus according to an embodiment of the present invention. FIG. 2 is a perspective view of the image display apparatus according to the first embodiment of the present invention. FIG. 3 is a diagram showing an example of a detection circuit for detecting the presence / absence of a video plug for image input. FIG. 4 is a timing chart for explaining the operation of the image display apparatus. FIG. 5 is a timing chart for explaining the operation of the conventional image display apparatus. FIG. 6 is a flowchart for explaining the operation of the image display apparatus according to the embodiment of the present invention.

Explanation of symbols

  1: image display device, 2: video plug (input plug), 10: CPU (control means), 11: video plug detection circuit (plug detection means), 12: operation switch (operation member), 13: LED for display ( Display means), 14: power supply module (power supply means), 16: video signal conversion circuit, 17: image display driver, 21: LED light source (projection light source), 22: image display element.

Claims (6)

  1. An image display device that includes a projection light source and projects and displays an image generated based on an input image signal,
    Plug detection means for detecting whether or not an input plug for inputting the image signal is inserted;
    Image processing means for inputting the image signal via the input plug;
    Control means for activating power supply means for supplying power to at least a part of the image processing means and the projection light source based on the output of the plug detection means when the plug detection means detects insertion of the input plug; An image display device comprising:
  2.   The image display apparatus according to claim 1, wherein when the insertion of the input plug is detected by the plug detection unit, the control unit turns on the projection light source.
  3.   An operation member that activates at least a part of the image processing unit and the projection light source, and the control unit turns on the projection light source when the operation member is operated. 1. The image display device according to 1.
  4.   Display means for displaying an operation state of the operation member, and when the operation member is not operated after starting at least a part of the image processing means and the power supply means based on the output of the plug detection means, the control 4. An image display apparatus according to claim 3, wherein said means displays on said display means that said operation member is in an operation waiting state.
  5.   The image display device according to claim 4, wherein the control unit shifts to a power saving mode when the operation member is not operated within a predetermined time after the operation member enters an operation waiting state.
  6.   The control means activates at least a part of the image processing means and the power supply means based on an operation of the operation member when the plug detection means does not detect insertion of the input plug. The image display apparatus of any one of -5.
JP2008164100A 2008-06-24 2008-06-24 Image display device Active JP5206951B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102196218A (en) * 2010-03-01 2011-09-21 台达电子工业股份有限公司 Projection system and power supply module thereof with projection function
JP2015156029A (en) * 2002-11-13 2015-08-27 シーリアル、テクノロジーズ、ゲーエムベーハーSeereal Technologies Gmbh Video hologram and video hologram reproduction device
CN105405376A (en) * 2015-12-05 2016-03-16 武汉精测电子技术股份有限公司 TTL video signal single path to multipath conversion device and TTL video signal single path to multipath conversion method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003122458A (en) * 2001-10-10 2003-04-25 Internatl Business Mach Corp <Ibm> Computer device, controller, and method of controlling computer device
JP2006330224A (en) * 2005-05-25 2006-12-07 Seiko Epson Corp Projector and its control method
WO2008053807A1 (en) * 2006-10-30 2008-05-08 Nec Display Solutions, Ltd. Network projector and projector system
JP2008129531A (en) * 2006-11-24 2008-06-05 Casio Comput Co Ltd Projection device, projection control method, and program
JP2008134275A (en) * 2006-11-27 2008-06-12 Seiko Epson Corp Projector and light source control method
JP2009288753A (en) * 2008-06-02 2009-12-10 Seiko Epson Corp Projector and method of controlling the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003122458A (en) * 2001-10-10 2003-04-25 Internatl Business Mach Corp <Ibm> Computer device, controller, and method of controlling computer device
JP2006330224A (en) * 2005-05-25 2006-12-07 Seiko Epson Corp Projector and its control method
WO2008053807A1 (en) * 2006-10-30 2008-05-08 Nec Display Solutions, Ltd. Network projector and projector system
JP2008129531A (en) * 2006-11-24 2008-06-05 Casio Comput Co Ltd Projection device, projection control method, and program
JP2008134275A (en) * 2006-11-27 2008-06-12 Seiko Epson Corp Projector and light source control method
JP2009288753A (en) * 2008-06-02 2009-12-10 Seiko Epson Corp Projector and method of controlling the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015156029A (en) * 2002-11-13 2015-08-27 シーリアル、テクノロジーズ、ゲーエムベーハーSeereal Technologies Gmbh Video hologram and video hologram reproduction device
CN102196218A (en) * 2010-03-01 2011-09-21 台达电子工业股份有限公司 Projection system and power supply module thereof with projection function
CN105405376A (en) * 2015-12-05 2016-03-16 武汉精测电子技术股份有限公司 TTL video signal single path to multipath conversion device and TTL video signal single path to multipath conversion method
CN105405376B (en) * 2015-12-05 2018-09-07 武汉精测电子集团股份有限公司 A kind of TTL vision signals single channel turns the device and method of multichannel

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