JP2010256753A - Projector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projector for easily selecting an image output device connected to an input terminal. <P>SOLUTION: This projector 1 includes a first input terminal T1, second input terminal T2 and third input terminal T3, and a first input detection section 231, second input detection section 232 and third input detection section 233 for detecting that a video signal is input to each input terminal and outputting the detection result. The projector 1 also includes a first display operation section 31, second display operation section 32 and third display operation section 33 for displaying the state of the input of the video signal to each input terminal and outputting an operation signal for selecting an input terminal based on the input operation. The projector 1 also includes a control section 20 for determining whether the projector 1 can process the video signal based on the detection result, displaying the determination result on each display operation section, selecting the input terminal according to the operation signal, and projecting image light according to the video signal when the video signal input from the selected input terminal can be processed by the projector 1. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a projector that projects image light.

  2. Description of the Related Art Conventionally, there is known a projector that forms image light by modulating a light beam emitted from a light source according to a video signal and projects the image light on a screen or the like. The projector includes a plurality of input terminals, from which video signals of an image output device such as a PC (Personal Computer), a DVD (Digital Versatile Disc) player, or a VTR (Video Tape Recorder) are input. Then, the user performs a predetermined operation to select a video signal from the image output apparatus and project the image light. In order to select a desired video signal, a projector that displays to which input terminal the video signal is input has been proposed (see, for example, Patent Document 1).

  The projector of Patent Document 1 includes a video search button, a source selection button, and the like, and projects image light according to a video signal from an image output device connected to a default input terminal at the shipping stage. When the video search button is operated, the projector sequentially checks the presence / absence of a video signal to each input terminal and displays the result on an OSD (On Screen Display). When the source selection button corresponding to the input terminal to which the video signal is input is operated, the projector switches to the image output device connected to the input terminal and projects the image.

JP 2006-285167 A

  However, the projector described in Patent Document 1 displays that no video signal is input when no video signal is input to the default input terminal. However, there is a risk of misunderstanding that no video signal is input. Further, the projector described in Patent Document 1 sequentially checks the presence or absence of a video signal to each input terminal after operating a video search button to search whether or not a video signal is input to each input terminal. There is a problem that it takes time and the search result is not known until the OSD is displayed. In addition, in order to select a desired image output device, it is necessary to operate a video search button or operate a source selection button while observing the OSD, and the operation is complicated for an unfamiliar user. There is.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 A projector according to this application example is a projector that modulates a light beam emitted from a light source according to a video signal to form image light, and projects the image light. A plurality of input terminals, an input detection unit for detecting that the video signal is input to the input terminal and outputting the detection result, and an input state of the video signal to the input terminal are displayed. And a display operation unit that outputs an operation signal for selecting the input terminal based on an input operation, and whether or not the projector can process the video signal based on the detection result and determines the determination result. And a control unit that displays on the display operation unit and selects the input terminal according to the operation signal. The control unit receives the video signal input from the selected input terminal. If projector can handle, characterized thereby projects the image light corresponding to the video signal.

  According to this configuration, by observing the display operation unit, it is possible to clearly recognize which input terminal among the plurality of input terminals is receiving the video signal. That is, the user can immediately determine which image output device can be selected.

  The input detection unit outputs information corresponding to the synchronization signal included in the video signal input to the input terminal, for example, the frequency of the vertical / horizontal synchronization signal of the video signal, and the control unit outputs the information Based on the result, it is determined whether the video signal is compatible with the projector. As a result, the control unit differs between the video signal that can be processed by the projector (hereinafter referred to as “regular signal”) and the video signal that cannot be handled (hereinafter referred to as “regular signal”). Control becomes possible. For example, for each input terminal, whether a regular signal or an irregular signal is input can be displayed on the display / operation unit or can be guided by voice. That is, when the video signal input to the input terminal is an irregular signal, the user can visually and audibly recognize that the image light cannot be projected by the video signal. Accordingly, it is possible to reduce unnecessary search work (work for searching for a cause that cannot be projected) by the user, and the handling of the projector is improved.

  Further, the display operation unit has a function of accepting an input operation for selecting an input terminal, and outputs a predetermined operation signal to the control unit when an input terminal to which a video signal is input is selected. The control unit selects an input terminal in accordance with the operation signal from the display operation unit, and when the video signal input from the input terminal can be processed, causes the image light to be projected according to the video signal. As a result, the user can immediately select an input terminal for which the input video signal is determined to be a normal signal and project the image light. Therefore, the operation for selecting the image output apparatus is simplified, and the operability of the projector can be improved.

  Application Example 2 In the projector according to the application example, when the video signal input from the selected input terminal cannot be processed by the projector, the control unit projects the image light according to the video signal. Preferably not.

  According to this configuration, when the video signal input to the input terminal is an irregular signal, the control unit does not project image light corresponding to the video signal. Therefore, since the distorted image caused by the irregular signal is not projected, even if the irregular signal is input, there is no possibility of giving the user a misunderstanding that the projector is out of order.

  Application Example 3 In the projector according to the application example, it is preferable that the control unit causes the display operation unit to display which input terminal is selected from among the plurality of input terminals.

  According to this configuration, the control unit causes the display operation unit corresponding to the input terminal to which the regular signal is input to be displayed in a different manner between the display operation unit that is input and the display operation unit that is not input. As a result, the user can immediately know which image output device is projecting the image light corresponding to the video signal and which image output device is capable of projecting the image light. it can. Therefore, the user can immediately select a desired image output device, and convenience can be improved.

  Application Example 4 In the projector according to the application example, it is preferable that the display operation unit includes a light emitter and a push switch.

According to this configuration, since the display operation unit includes the light emitter (for example, LED), it is clear to the user that the video signal is input to the input terminal by causing the light emitter to emit light. Can be recognized. In addition, since the display operation unit can be recognized by the user even in a dark environment, the usage scene of the projector can be expanded.
In addition, the display operation unit can switch to the input terminal without increasing the number of parts, because the light emission color of the illuminant can be switched, or the light emission state by lighting or blinking can be switched. A case where a normal signal is input and a case where an irregular signal is input can be displayed separately, and a case where an input operation is performed and a case where no input operation is performed can be displayed separately.
In addition, since the display operation unit includes the push-type switch, the user can easily output an operation signal corresponding to the operated display operation unit only by pressing the display operation unit.

  Application Example 5 In the projector according to the application example described above, it is preferable that the display operation unit is a touch panel including a display unit that displays various types of information and a touch input unit that has an input area that overlaps the display unit.

  According to this configuration, since the display operation unit is configured as a touch panel having a display unit and a touch input unit stacked on the display unit, the display operation unit displays a video signal input to the input terminal, and the like. It is possible to visually match the part where the input operation is performed. As a result, the user can intuitively determine the place where the input operation is performed, and the operability can be improved. In addition, since the display operation unit is formed by stacking the display unit and the touch input unit, it is possible to reduce the size. Therefore, the projector has a greater degree of freedom in arranging the display operation unit, and can improve design.

2A and 2B are perspective views illustrating an external appearance of the projector according to the first embodiment, in which FIG. 1A is a diagram viewed from the front, and FIG. 1 is a block diagram illustrating a schematic configuration of a projector according to a first embodiment. The schematic diagram which shows the external appearance of the operation panel of 1st Embodiment. 6 is a flowchart for explaining the operation of the projector according to the first embodiment. The schematic diagram which shows the example of a display of the display operation part of 1st Embodiment. 6 is a flowchart for explaining the operation of the projector according to the first embodiment. The schematic diagram which shows the external appearance of the display operation part of 2nd Embodiment.

(First embodiment)
Hereinafter, the projector according to the first embodiment will be described with reference to the drawings.
The projector according to the present embodiment modulates a light beam emitted from a light source according to a video signal to form image light, and enlarges and projects the image light on a screen or the like.
1A and 1B are perspective views showing an appearance of the projector 1 according to the present embodiment. FIG. 1A is a view seen from the front, and FIG. 1B is a view seen from the rear.

  As shown in FIGS. 1A and 1B, the projector 1 has a configuration in which the apparatus main body is accommodated in an exterior housing 2. A projection lens 13 for projecting image light is exposed on the front surface 2 f of the exterior housing 2, and a power supply terminal 281 to which commercial power is supplied and an image information input unit 24 are disposed on the back surface 2 r of the exterior housing 2. Is provided. The image information input unit 24 includes a first input terminal T1, a second input terminal T2, and a third input terminal T3. An external image output apparatus (not shown) is connected to the first input terminal via a cable. Input terminal T1, second input terminal T2, and third input terminal T3. The video signal output from the image output device is input to the first input terminal T1, the second input terminal T2, and the third input terminal T3. An operation panel 30 for giving various instructions to the projector 1 is provided on the upper surface 2t of the exterior housing 2.

FIG. 2 is a block diagram illustrating a schematic configuration of the projector 1 according to the present embodiment.
As shown in FIG. 2, the projector 1 includes an image projection unit 10, a control unit 20, a storage unit 21, an image information input unit 24, a first input detection unit 231, a second input detection unit 232, and a third input. A detection unit 233, an operation panel 30, an input source selection unit 25, an image processing unit 26, an OSD processing unit 27, a power supply circuit 28, a light source control unit 29, and the like are provided.

  The image projection unit 10 includes a light source 11, three liquid crystal light valves 12R, 12G, and 12B as light modulation devices, a projection lens 13 as a projection optical system, a light valve drive unit 14, and the like. The image projection unit 10 modulates the light beam emitted from the light source 11 with the liquid crystal light valves 12R, 12G, and 12B to form image light, and projects the image light from the projection lens 13 to display it on the screen SC or the like. .

  The light source 11 includes a discharge-type light source lamp 11a made of an ultra-high pressure mercury lamp, a metal halide lamp, or the like, and a reflector 11b that reflects a light beam emitted from the light source lamp 11a toward the liquid crystal light valves 12R, 12G, and 12B. Has been. A light beam emitted from the light source 11 is converted into a light beam having a substantially uniform luminance distribution by an integrator optical system (not shown), and red (R), green (G), and blue which are the three primary colors of light by a color separation optical system (not shown). After being separated into each color light component of (B), it enters the liquid crystal light valves 12R, 12G, and 12B, respectively.

The liquid crystal light valves 12R, 12G, and 12B are configured by a liquid crystal panel in which liquid crystal is sealed between a pair of transparent substrates. The liquid crystal light valves 12R, 12G, and 12B are formed with a plurality of pixels arranged in a matrix, and a pixel voltage can be applied to the liquid crystal for each pixel.
The light valve driving unit 14 is a liquid crystal driver, and supplies a driving signal corresponding to an input video signal to the liquid crystal light valves 12R, 12G, and 12B. A pixel voltage corresponding to the supplied drive signal is applied to each pixel of the liquid crystal light valves 12R, 12G, and 12B. Each pixel of the liquid crystal light valves 12R, 12G, and 12B is set to a light transmittance corresponding to the applied pixel voltage, and a light beam emitted from the light source 11 passes through the liquid crystal light valves 12R, 12G, and 12B. And image light corresponding to the video signal is formed. The formed image light of each color is synthesized for each pixel by a color synthesis optical system (not shown) to become image light representing a color image, and then enlarged and projected onto the screen SC or the like by the projection lens 13.

  The control unit 20 includes a CPU (Central Processing Unit), a RAM (Random Access Memory) used for temporary storage of various data, and the like, and operates according to a control program stored in the storage unit 21 to operate the projector 1. Control over all operations. That is, the control unit 20 functions as a computer together with the storage unit 21.

  The storage unit 21 includes a non-volatile memory such as a mask ROM (Read Only Memory), a flash memory, or an FeRAM (Ferroelectric RAM). The storage unit 21 stores a control program for controlling the operation of the projector 1, various setting data for defining the operation conditions of the projector 1, and the like.

As described above, the image information input unit 24 includes the first input terminal T1, the second input terminal T2, and the third input terminal T3. The first input terminal T1, the second input terminal T2, A video signal of an image output device such as a PC, a DVD player, or a VTR is input from the third input terminal T3.
The first input terminal T1 is, for example, a mini D-sub 15-pin terminal and corresponds to an analog RGB signal supplied from the PC. Also, component signals can be input by changing the usage assignment of the 15-pin signal line of the mini D-sub 15-pin terminal.
The second input terminal T2 is an S terminal, for example, and corresponds to an S signal supplied from a DVD player or the like.
The third input terminal T3 is, for example, a 1RCA terminal and corresponds to a composite signal supplied from a VTR or the like.

  Video signals input to the first input terminal T 1, the second input terminal T 2, and the third input terminal T 3 are output to the input source selection unit 25. The video signals input to the first input terminal T1, the second input terminal T2, and the third input terminal T3 are the first input detection unit 231, the second input detection unit 232, and the third input. Each is output to the detector 233. Specifically, the video signal input to the first input terminal T 1 is output to the first input detection unit 231, and the video signal input to the second input terminal T 2 is output to the second input detection unit 232. And the video signal input to the third input terminal T3 is output to the third input detection unit 233. In addition to the first input terminal T1, the second input terminal T2, and the third input terminal T3, the image information input unit 24 includes an audio input terminal such as a stereo mini jack for inputting an audio signal, USB terminal, RS232C terminal, etc. are provided, but are not shown for simplicity of explanation.

  The first input detection unit 231, the second input detection unit 232, and the third input detection unit 233 correspond to the first input terminal T1, the second input terminal T2, and the third input terminal T3, respectively. Is provided. Then, the first input detection unit 231, the second input detection unit 232, and the third input detection unit 233 are connected to the first input terminal T1, the second input terminal T2, and the third input terminal T3, respectively. Is detected and the detection result is output to the control unit 20 and information corresponding to the synchronization signal included in the input video signal, for example, the vertical / horizontal synchronization signal of the video signal The frequency or the like is output to the control unit 20.

The operation panel 30 includes an input operation unit 40, a first display operation unit 31, a second display operation unit 32, and a third display operation unit 33.
FIG. 3 is a schematic diagram showing the appearance of the operation panel 30.
The input operation unit 40 has a function of accepting an input operation from the user, and includes a plurality of operation keys for the user to give various instructions to the projector 1. Specifically, as shown in FIG. 3, the input operation unit 40 includes a power key 41 for switching on / off the power, a menu key 42 for displaying a menu image for performing various settings, selection of an item on the menu image, and the like. A cursor key 43 used for the determination, a determination key 44 for determining an item selected in the menu image, a return key 45 for ending the function being executed, and the like. Each operation key has a push-type switch, and outputs an operation signal corresponding to the pressed key to the control unit 20 when pressed by the user.

  The first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 correspond to the first input terminal T1, the second input terminal T2, and the third input terminal T3, respectively. Is provided. Specifically, the first display operation unit 31 is provided corresponding to the first input terminal T1, the second display operation unit 32 is provided corresponding to the second input terminal T2, and the third The display operation unit 33 is provided corresponding to the third input terminal T3. Then, the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 are images to the first input terminal T1, the second input terminal T2, and the third input terminal T3. It has a function of displaying each signal input state and a function of outputting an operation signal for selecting an input terminal based on a user's input operation.

  Specifically, the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 each include an LED, a push-type switch, and a key top, and are configured as light emitting buttons. The LED is composed of a red LED and a green LED. The first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 can emit both the red LED and the green LED when one of the red LED and the green LED emits light. It is configured. The key top is made of a synthetic resin and is formed so as to be able to transmit color light emitted from the LED. That is, the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 are configured to emit light in red, green, and orange colors. When the key top is pressed (input operation), the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 control the operation signal by pressing the push-type switch. To the unit 20.

  The input source selection unit 25 selects one input terminal based on an instruction from the control unit 20 among the first input terminal T1, the second input terminal T2, and the third input terminal T3, and inputs the input terminal to this input terminal. The output video signal is output to the image processing unit 26.

  The image processing unit 26 outputs video information of various formats output from the input source selection unit 25 to image information representing the gradation of each pixel of the liquid crystal light valves 12R, 12G, and 12B, that is, a pixel voltage applied to each pixel. Convert to image information for prescription. Further, the image processing unit 26 performs an image adjustment process for adjusting brightness, contrast, sharpness, hue, and the like on the converted image information based on an instruction from the control unit 20, and the processed image information Is output to the OSD processing unit 27.

  The OSD processing unit 27 performs processing for superimposing an OSD image such as a menu image or a message image on the input image based on an instruction from the control unit 20. The OSD processing unit 27 includes an OSD memory (not shown) and stores OSD image information representing graphics, fonts, and the like that form an OSD image. When the control unit 20 instructs to superimpose the OSD image, the OSD processing unit 27 reads necessary OSD image information from the OSD memory, and from the image processing unit 26 so that the OSD image is superimposed at a predetermined position of the input image. The OSD image information is synthesized with the input image information. The image information combined with the OSD image information is output to the light valve driving unit 14. Note that, when there is no instruction to superimpose the OSD image from the control unit 20, the OSD processing unit 27 outputs the image information output from the image processing unit 26 to the light valve driving unit 14 as it is.

  When the light valve driving unit 14 drives the liquid crystal light valves 12R, 12G, and 12B according to the input image information, the liquid crystal light valves 12R, 12G, and 12B form image light according to the image information, and the image light The projection lens 13 projects the image onto the screen SC.

  The power supply circuit 28 is supplied with commercial power such as AC 100V from the outside. The power supply circuit 28 converts a commercial power supply (AC power supply) into a DC power supply having a predetermined voltage and supplies power to each unit of the projector 1.

  The light source control unit 29 controls the supply and stop of power to the light source 11 based on an instruction from the control unit 20 to switch the light source 11 on and off.

Here, the operation of the projector 1 will be described.
First, the display operation of the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 will be described.
FIG. 4 is a flowchart for explaining the operation of the projector 1. Here, the first display operation unit 31 among the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 will be described.
As shown in FIG. 4, the control unit 20 reads the detection result from the first input detection unit 231 provided corresponding to the first input terminal T1 in step S101. In step S102, the control unit 20 determines whether a video signal is input to the first input terminal T1 based on the detection result from the first input detection unit 231. When the video signal is not input, the process proceeds to step S103, and when the video signal is input, the process proceeds to step S104.

When the process proceeds to step S103, that is, when no video signal is input to the first input terminal T1, the control unit 20 includes a first display operation unit 31 provided corresponding to the first input terminal T1. Turn off the light.
On the other hand, when the process proceeds to step S104, the control unit 20 determines whether the video signal input to the first input terminal T1 is a signal that can be processed by the projector 1 based on the information output from the first input detection unit 231. It is determined whether the signal is a normal signal or an irregular signal. If the video signal is an irregular signal, for example, a signal whose frequency of the vertical / horizontal synchronization signal is outside the frequency range that can be processed by the projector 1, the process proceeds to step S <b> 105. Migrate to

When the process proceeds to step S105, that is, when the video signal input to the first input terminal T1 is an irregular signal, the control unit 20 blinks the first display operation unit 31 in red.
On the other hand, when the process proceeds to step S106, that is, when the video signal input to the first input terminal T1 is a normal signal, the control unit 20 lights the first display operation unit 31 in orange, and this flow. Exit.
The second display operation unit 32 and the third display operation unit 33 are controlled by the control unit 20 in the same manner as the first display operation unit 31.

The control unit 20 receives an operation signal from the display operation unit corresponding to the input terminal to which the regular signal is input. That is, the user can select a desired image output device by operating the display operation unit that is lit in orange. When the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 are operated in a state of being lit in orange, the control unit 20 switches the lighting state to green. It is done. Then, the projector 1 selects an image output device connected to the input terminal corresponding to the operated display operation unit, and projects image light corresponding to the video signal input from the image output device.
On the other hand, the control unit 20 does not accept the operation signal from the display operation unit corresponding to the input terminal to which the irregular signal is input, and does not project the image light corresponding to the video signal input to the input terminal.

FIGS. 5A, 5 </ b> B, and 5 </ b> C are schematic diagrams illustrating display examples of the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33.
When a regular signal is input to each of the first input terminal T1 and the second input terminal T2 and no video signal is input to the third input terminal T3, as shown in FIG. The display operation unit 31 and the second display operation unit 32 are lit in orange, and the third display operation unit 33 is turned off. That is, the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 are connected to the first input terminal T1 and the second input terminal T1, and the image output devices (for example, PC and A state in which any one of the DVD players) can be selected and projected is displayed.

  When the first display operation unit 31 is operated from the state of the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 shown in FIG. 5A, FIG. ), The first display operation unit 31 is switched from orange to green. Then, the first display operation unit 31 displays that the image light corresponding to the video signal input from the image output device (for example, PC) connected to the first input terminal T1 is projected. .

  FIG. 5C shows the case where an irregular signal and a regular signal are input to the first input terminal T1 and the first input terminal T2, respectively, and no video signal is input to the third input terminal T3. As described above, the first display operation unit 31 blinks in red, the second display operation unit 32 is lit in orange, and the first display operation unit 33 is turned off. That is, the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 output video signals that cannot be processed by the projector 1 by the image output device connected to the first input terminal T1. And a state in which the image output device connected to the second input terminal T2 can be selected and projected is displayed.

  As described above, whether the control unit 20 can process the video signal on the basis of the detection results output from the first input detection unit 231, the second input detection unit 232, and the third input detection unit 233. The determination result is displayed on the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33. The control unit 20 includes a first display operation unit 31, a second display operation unit 32, depending on whether the input video signal is a signal that can be processed by the projector 1 and a signal that cannot be processed by the projector 1. A different display is displayed on the third display operation unit 33. Further, the control unit 20 changes the display mode of the display operation unit to display which input terminal is selected on the display operation unit.

Next, the operation when the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 are operated will be described in detail.
FIG. 6 is a flowchart for explaining the operation of the projector 1.
As shown in FIG. 6, when the control unit 20 detects an operation signal in step S201, that is, when it is detected that the display operation unit is operated, the control unit 20 proceeds to step S202. Then, in step S202, the control unit 20 sets the operated display operation unit based on the detection results from the first input detection unit 231, the second input detection unit 232, and the third input detection unit 233. It is determined whether or not a regular signal is input to the corresponding input terminal, and whether or not the input source is selected by the input source selection unit 25 is determined.

  When the normal signal is input to the input terminal corresponding to the operated display operation unit and the input terminal is not selected by the input source selection unit 25, the control unit 20 proceeds to step S203, otherwise In this case, this flow is finished. That is, when the display operation unit that is lit in orange is operated, the control unit 20 receives an operation signal and proceeds to step S203, and performs display operations in other states (off, green, red flash). If the unit is operated, this flow is terminated without receiving an operation signal.

  When the process proceeds to step S203, the control unit 20 determines whether or not the input source selection unit 25 has selected any input terminal. That is, the control unit 20 determines whether or not the projector 1 is projecting image light based on the video signal input from any of the input terminals. If the input source selection unit 25 selects any input terminal, that is, if the projector 1 projects image light based on the video signal input from any input terminal, the process proceeds to step S204. If the input source selection unit 25 has not selected any input terminal, that is, if the projector 1 is not projecting image light based on the video signal input from the input terminal, the process proceeds to step S205. To do.

  When the process proceeds to step S204, the control unit 20 switches the display operation unit corresponding to the input terminal selected by the input source selection unit 25 from green lighting to orange lighting, and proceeds to step S205.

  In step S205, the control unit 20 switches the operated display operation unit from orange lighting to green lighting, and proceeds to step S206. In step S206, the control unit 20 instructs the input source selection unit 25 to switch the selection from the selected input terminal to the input terminal corresponding to the operated display operation unit, and the video input from this input terminal. The signal is output to the image processing unit 26. Then, the control unit 20 causes the OSD processing unit 27 to process the video signal input to the image processing unit 26 and then causes the image projection unit 10 to output the video signal. In step S207, the image projection unit 10 projects the image light formed according to the image information output from the OSD processing unit 27, and ends this flow.

  Specifically, when normal signals from the PC and the DVD player are input to the first input terminal T1 and the second input terminal T2, respectively, the first display operation unit 31, the second display operation unit 32, The operation of the projector 1 when the third display operation unit 33 is operated will be described with reference to FIG.

The first display operation unit 31 and the second display operation unit 32 are orange in a state where normal signals from the PC and DVD player are input to the first input terminal T1 and the second input terminal T2, respectively. The third display operation unit 33 is turned on and turned off (see FIG. 5A).
When the first display operation unit 31 is operated from this state, the control unit 20 switches the first display operation unit 31 from orange to green as shown in FIG. In step S205, the input source selection unit 25 selects the first input terminal T1 corresponding to the first display operation unit 31, and the image processing unit 26 receives the PC video signal input to the first input terminal T1. (Step S206). The video signal input to the image processing unit 26 is processed by the OSD processing unit 27 and then projected by the image projection unit 10 (step S207).

  When the second display operation unit 32 is pressed while the PC is selected, the first display operation unit 31 is switched from green to orange by the control unit 20 (step S204), and the second display operation is performed. The operation unit 32 is switched from orange to green (step S205). Then, the input source selection unit 25 selects the second input terminal T2 corresponding to the second display operation unit 32 by the control unit 20, and the video signal of the DVD player input to the second input terminal T2. Is output to the image processing unit 26 (step S206). The video signal input to the image processing unit 26 is processed by the OSD processing unit 27 and then projected by the image projection unit 10 (step S207).

  When the third display operation unit 33 that is turned off is operated from the state where the PC is selected or the DVD player is selected, the control unit 20 performs the input operation of the third display operation unit 33. Without accepting, the state where the PC is selected or the state where the DVD player is selected is maintained.

  As described above, the control unit 20 selects an input terminal according to the operation signals output from the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33. Then, when the video signal input from the selected input terminal can be processed by the projector 1, the control unit 20 projects image light corresponding to the video signal.

As described above, according to the projector 1 of the present embodiment, the following effects can be obtained.
(1) The user observes the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33, so that the first input terminal T1, the second input terminal T2, It can be clearly recognized which input terminal of the third input terminal T3 is receiving the video signal. That is, the user can immediately determine which image output device can be selected.

  (2) The control unit 20 determines whether the video signal input to the first input terminal T1, the second input terminal T2, and the third input terminal T3 is a normal signal and an abnormal signal. The first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 display different displays. As a result, when the video signal input to the input terminal is an irregular signal, the user can immediately determine that the image light cannot be projected by the video signal. Work) is reduced. Therefore, the handleability of the projector 1 is improved.

  (3) The user can immediately select a desired image output device and project the image light by operating any of the display operation units displaying that the regular signal is input. Can do. Therefore, the operation for selecting the image output device is simplified, and the operability of the projector 1 can be improved.

  (4) When the video signal input to the first input terminal T1, the second input terminal T2, and the third input terminal T3 is an irregular signal, the control unit 20 displays an image corresponding to the video signal. Do not project light. Therefore, since a distorted image caused by the irregular signal is not projected, even if the irregular signal is input, there is no possibility of giving the user a misunderstanding that the projector 1 is out of order.

  (5) The control unit 20 causes the display operation unit corresponding to the input terminal to which the regular signal is input to be displayed in a different manner between the display operation unit that is input and the display operation unit that is not input. As a result, the user can immediately know which image output device is projecting the image light corresponding to the video signal and which image output device is capable of projecting the image light. it can. Therefore, the user can immediately select a desired image output device, and convenience can be improved.

  (6) Since the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 include LEDs, the first input terminal T1, The user can clearly recognize that the video signal is input to the second input terminal T2 and the third input terminal T3. In addition, since the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 can be recognized by the user even in a dark environment, the usage scene of the projector 1 is expanded. Is possible. Furthermore, the display mode of the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 can be switched between three colors (green, red, and orange) and lighting / flashing. Therefore, the above-described state can be distinguished and displayed without increasing the number of parts.

  (7) Since the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 are provided with a push-type switch, the user can By simply pressing the second display operation unit 32 and the third display operation unit 33, an operation signal corresponding to the operated display operation unit can be easily output.

(Second Embodiment)
Next, a projector 1 according to a second embodiment will be described with reference to the drawings.
In the following description, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted or simplified.
The projector 1 according to the present embodiment includes a first display operation unit 51 and a second display unit that are different from the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 according to the first embodiment. The display operation unit 52 and the third display operation unit 53 are provided.
The first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 of the first embodiment are integrally configured as an operation panel 30 together with the input operation unit 40. The first display operation unit 51, the second display operation unit 52, and the third display operation unit 53 are separated from the input operation unit 40 and configured as one touch panel.

FIGS. 7A, 7 </ b> B, and 7 </ b> C are schematic diagrams illustrating the appearance of the first display operation unit 51, the second display operation unit 52, and the third display operation unit 53. It is a figure which shows the example of a display of a part.
The first display operation unit 51, the second display operation unit 52, and the third display operation unit 53 are a display unit that displays various information such as characters and symbols, and a touch input unit that has an input area overlapping the display unit. As shown in FIG. 7, the input regions are formed side by side so as to be divided into approximately three equal parts.
The first display operation unit 51, the second display operation unit 52, and the third display operation unit 53 are the same as the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33. Are provided corresponding to the first input terminal T1, the second input terminal T2, and the third input terminal T3, respectively, and the first input terminal T1, the second input terminal T2, and the third input terminal T3. The video signal input state is displayed, and the operation signal for selecting the input terminal based on the input operation by the user is output.

As shown in FIG. 7, the first display operation unit 51, the second display operation unit 52, and the third display operation unit 53 include a first input terminal T1, a second input terminal T2, and a third display operation unit. The three items “Computer”, “S-Video”, and “Video” corresponding to the input terminal T3 are respectively displayed, and “○”, “●”, “×” are displayed on the right side of the fixed display portion. , “−” Display is provided for each status display section.
The first display operation unit 51, the second display operation unit 52, and the third display operation unit 53 are touched by the user touching the surface of the fixed display unit or the state display unit. The operation signal corresponding to is output to the control unit 20.

As in the first embodiment, the control unit 20 includes information output from the first input detection unit 231, the second input detection unit 232, and the third input detection unit 233, and display operation units 51, 52, and 53. The first display operation unit 51, the second display operation unit 52, and the third display operation unit 53 are set to any of “O”, “●”, “×”, and “−” based on the operation signal output by To display.
Specifically, when a regular signal is input to each of the first input terminal T1 and the second input terminal T2 and no video signal is input to the third input terminal T3, as shown in FIG. The first display operation unit 51 and the second display operation unit 52 are displayed as “◯”, and the third display operation unit 53 is displayed as “−”. That is, the first display operation unit 51, the second display operation unit 52, and the third display operation unit 53 are connected to the first input terminal T1 and the second input terminal T2, respectively (for example, A state in which any one of PC and DVD player) can be selected and projected is displayed.

  When the first display operation unit 51 is operated from the state of the first display operation unit 51, the second display operation unit 52, and the third display operation unit 53 shown in FIG. ), The first display operation unit 51 is switched from the display of “◯” to the display of “●” in the status display unit. Then, the projector 1 projects image light corresponding to a video signal input from an image output device (for example, a PC) connected to the first input terminal T1.

  FIG. 7C shows the case where an irregular signal and a regular signal are respectively input to the first input terminal T1 and the second input terminal T2, and no video signal is input to the third input terminal T3. As described above, the first display operation unit 51 is displayed as “×”, the second display operation unit 52 is displayed as “◯”, and the third display operation unit 53 is displayed as “−”. That is, the first display operation unit 51, the second display operation unit 52, and the third display operation unit 53 output video signals that cannot be processed by the projector 1 by the image output device connected to the first input terminal T1. And a state in which the image output device connected to the second input terminal T2 can be selected and projected is displayed.

As described above, according to the projector 1 of the present embodiment, in addition to the effects (1) to (4) of the first embodiment, the following effects can be obtained.
(1) Since the first display operation unit 51, the second display operation unit 52, and the third display operation unit 53 are configured as touch panels, it is displayed that a video signal is input to the input terminal. The part to be performed and the part where the input operation is performed can be visually matched. As a result, the user can intuitively determine the place where the input operation is performed, and the operability can be improved.

  (2) Since the first display operation unit 51, the second display operation unit 52, and the third display operation unit 53 are formed by stacking the display unit and the touch input unit, the size can be reduced. . Therefore, the projector 1 has a high degree of freedom in arranging the first display operation unit 51, the second display operation unit 52, and the third display operation unit 53, and can be downsized.

  (3) Since the first display operation unit 51, the second display operation unit 52, and the third display operation unit 53 can be formed without unevenness on the surface, the design can be improved.

(Modification)
In addition, you may change the said embodiment as follows.
The input operation unit 40 of the first embodiment, the first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 may be configured separately. The first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 may be configured separately from each other.

  The first display operation unit 31, the second display operation unit 32, and the third display operation unit 33 according to the first embodiment include two-color LEDs having a red LED and a green LED, but different colors. It may be constituted by a number of LEDs other than two colors.

  The first display operation unit 51, the second display operation unit 52, and the third display operation unit 53 of the second embodiment are configured separately from the input operation unit 40. And may be configured integrally with the input operation unit 40.

  The first display operation unit 51, the second display operation unit 52, and the third display operation unit 53 of the second embodiment indicate each state by “◯”, “●”, “×”, and “−”. Although it is displayed, it may be displayed by another pattern or the like, or may be configured to be displayed by changing the color of the background.

  The projector 1 according to the embodiment uses the transmissive liquid crystal light valves 12R, 12G, and 12B as the light modulation device, but may use a reflective liquid crystal light valve. Further, the light modulation device may use a device using a micromirror array.

  The projector 1 according to the embodiment includes the discharge-type light source lamp 11a as the light source 11, but a solid light source such as an LED light source or other light sources can also be used.

  Although the projector 1 of this embodiment is applied as a front type projector, it can also be applied to a rear type projector that integrally has a screen as a projection target surface.

  DESCRIPTION OF SYMBOLS 1 ... Projector, 10 ... Image projection part, 11 ... Light source, 12R, 12G, 12B ... Liquid crystal light valve, 13 ... Projection lens, 20 ... Control part, 21 ... Memory | storage part, 24 ... Image information input part, 25 ... Input source Selection unit, 26 ... image processing unit, 27 ... OSD processing unit, 30 ... operation panel, 31, 51 ... first display operation unit, 32, 52 ... second display operation unit, 33, 53 ... third display Operation unit, 40 ... input operation unit, 231 ... first input detection unit, 232 ... second input detection unit, 233 ... third input detection unit, T1 ... first input terminal, T2 ... second input Terminal, T3... Third input terminal.

Claims (5)

A projector that modulates a light beam emitted from a light source according to a video signal to form image light, and projects the image light,
A plurality of input terminals to which the video signal is input;
An input detection unit for detecting that the video signal is input to the input terminal and outputting the detection result;
A display operation unit for displaying an input state of the video signal to the input terminal and outputting an operation signal for selecting the input terminal based on an input operation;
Based on the detection result, it is determined whether or not the projector can process the video signal, and the determination result is displayed on the display operation unit, and the control unit selects the input terminal according to the operation signal;
With
The control unit projects the image light corresponding to the video signal when the video signal input from the selected input terminal can be processed by the projector. The projector according to claim 1,
The control unit does not project the image light according to the video signal when the video signal input from the selected input terminal cannot be processed by the projector. The projector according to claim 1 or 2, wherein
The control unit causes the display operation unit to display which input terminal is selected from among the plurality of input terminals. It is a projector as described in any one of Claims 1-3, Comprising:
The display operation unit includes a light emitter and a push switch. It is a projector as described in any one of Claims 1-3, Comprising:
The projector according to claim 1, wherein the display operation unit is a touch panel including a display unit that displays various types of information and a touch input unit that has an input area that overlaps the display unit.

Images