JP5338329B2 - Projection apparatus, projection system, audio control method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To more simplify operation required for installing a device by automatically setting volume corresponding to installation environment, and so on. <P>SOLUTION: The projecting device includes: input systems 11 and 12 that input an image signal and a sound signal; projecting systems 13 to 25 that include a lens optical system 21 having a focus lens 21b for changing the focused position of a projection image and a zoom lens 21a for changing a projection field angle, and that forms an optical image corresponding to an input image signal, thereby projecting the optical image by use of the lens optical system 21; sound systems 30 and 31 that output sound corresponding to the input sound signal; and control systems 26 to 29 that variably set volume according to the positions of the focus lens 21b and zoom lens 21a. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a projection apparatus, a projection system, an audio control method, and a program for projecting an image and outputting a loud sound according to an input signal.

  Conventionally, in order to easily adjust the image quality and volume by key operation of the remote controller, infrared light from the remote controller reflected by the screen is received by the light receiving element incorporated in the projection lens system. Have been described. (For example, Patent Document 1)

JP-A-6-125479

  In general, projector devices including the above-described patent document techniques, depending on key operations on the device main unit or attached remote controller, correct the keystone depending on the projection angle (zoom position), focus position, and model of the image. And each adjustment of the volume is performed.

  As described above, there are many items that need to be set according to the environment in which the apparatus is installed, the purpose of projection, and the like, and fine adjustment is required for the image to be projected. However, if the adjusted volume or the volume at the time of startup is not appropriate, there is a possibility that the audience may feel uncomfortable.

  Therefore, when installing the apparatus, it is desirable to simplify and optimize only the operation related to volume adjustment.

  The present invention has been made in view of the above circumstances, and its purpose is to automatically set an appropriate volume corresponding to the installation environment, etc. An object is to provide a projection device, a projection system, a sound control method, and a program that can be simplified.

According to a first aspect of the present invention, there is provided a lens optical system including at least one of an input unit that inputs an image signal and a sound signal, a focus lens that changes a focus position of a projection image, and a zoom lens that changes a projection field angle. a sound output for outputting a projection means for projecting by the lens optical system to form a light image corresponding to the image signal inputted by said input means, the sound corresponding to the sound signal inputted by said input means and means, the focus lens constituting the optical lens system of the projection unit, and in response to at least one of the position of the zoom lens and a sound control means for variably setting the volume of the above sound output means, said sound control And means for emitting the sound after a predetermined time has elapsed from an adjustment operation on at least one of the focus lens and zoom lens constituting the optical lens system of the projection means. Characterized in that the volume is variably set.

According to a second aspect of the present invention, in the above claim 1, wherein said sound control means, characterized by variably setting the volume in the sound emitting means at startup due to power-on.

According to a third aspect of the present invention, in the first aspect of the invention, the sound control means is prepared in advance based on the position of at least one of the focus lens and the zoom lens constituting the optical lens system of the projection means. The sound volume of the sound emitting means is variably set with reference to a lookup table.

According to a fourth aspect of the invention, in the first aspect of the invention, the sound control means is prepared in advance based on the position of at least one of the focus lens and zoom lens constituting the optical lens system of the projection means. An arithmetic expression is executed, and the volume of the sound emitting means is variably set according to the calculation result.

Invention of claim 5, wherein, a projection system comprising a projection device for outputting a sound signal, and a sound emitting device which emits sound based on the sound signal the projector is output, the projection apparatus, an image signal And a lens optical system including at least one of an input means for inputting a sound signal, a focus lens for changing the focus position of the projection image, and a zoom lens for changing the projection angle of view, and is input by the input means. After a lapse of a certain time from an adjustment operation for at least one of a projection unit that forms an optical image according to an image signal and projects it by the lens optical system , the focus lens that constitutes the optical lens system of the projection unit , and a zoom lens , to obtain the volume data for variably setting the volume of the sound signal in response to at least one of the position of the focus lens, and a zoom lens And volume data acquisition unit, to the sound output device, the sound volume data acquired by the sound volume data acquiring means and an output means for outputting the superimposed on the sound signal, the sound output device, said output means outputs a sound signal input means for the sound volume data to input signal superimposed on the sound signal, to adjust the volume on the basis of a signal inputted by the sound signal input means and sound output means for sounding the sound signal It is characterized by providing.

The invention described in claim 6 has a lens optical system including at least one of an input unit for inputting an image signal and a sound signal, a focus lens for changing the focus position of the projection image, and a zoom lens for changing the projection field angle. And a projection unit that forms a light image corresponding to the image signal input by the input unit and projects the light image by the lens optical system, and a sound emitting unit that outputs a sound corresponding to the sound signal input by the input unit. A sound control method for a projection apparatus, comprising: the focus lens and the zoom lens after an elapse of a predetermined time from an adjustment operation on at least one of the focus lens and the zoom lens constituting the optical lens system of the projection unit. The volume of the sound emitting unit is variably set according to at least one position.

The invention described in claim 7 has a lens optical system including at least one of an input unit for inputting an image signal and a sound signal, a focus lens for changing the focus position of the projection image, and a zoom lens for changing the projection field angle. And a projection unit that forms a light image corresponding to the image signal input by the input unit and projects the light image by the lens optical system, and a sound emitting unit that outputs a sound corresponding to the sound signal input by the input unit. A program to be executed by a computer built in the projection apparatus , and the focus lens after a predetermined time has elapsed from an adjustment operation on at least one of the focus lens and the zoom lens constituting the optical lens system of the projection unit, And causing the computer to execute a step of variably setting the sound volume in the sound emitting unit according to at least one position of the zoom lens. It is characterized in.

  According to the present invention, it is possible to automatically set an appropriate sound volume in accordance with the installation environment in order to simplify the operation required at the time of installation of the device as much as possible.

The block diagram which shows the function structure of the electronic circuit of the data projector apparatus which concerns on one Embodiment of this invention. The flowchart after power activation which concerns on the same embodiment. The figure which illustrates the contents of the volume table concerning the embodiment.

  An embodiment in which the present invention is applied to a data projector apparatus of DLP (Digital Light Processing) (registered trademark) system will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a schematic functional configuration of an electronic circuit included in the data projector device 10 according to the embodiment.
An input / output connector unit 11 includes, for example, a pin jack (RCA) type video input terminal, a D-sub15 type RGB input terminal, and a USB (Universal Serial Bus) connector.

  Image signals of various standards input from the input / output connector unit 11 are input to an image conversion unit 13 that is also generally referred to as a scaler via an input / output interface (I / F) 12 and a system bus SB.

  The image conversion unit 13 unifies the input image signal into an image signal of a predetermined format suitable for projection, and appropriately stores it in the video RAM 14 which is a buffer memory for display, and then sends it to the projection image processing unit 15.

  At this time, data such as symbols indicating various operation states for OSD (On Screen Display) is also superimposed on the image signal by the video RAM 14 as necessary, and the processed image signal is sent to the projection image processing unit 15.

  The projection image processing unit 15 multiplies a frame rate according to a predetermined format, for example, 60 [frames / second], the number of color component divisions, and the number of display gradations, in accordance with the transmitted image signal. The micromirror element 16, which is a spatial light modulation element (SOM), is driven to display by high-speed time division driving.

  The micromirror element 16 is turned on / off individually at a high speed by tilting angles of a plurality of micromirrors arranged in an array, for example, XGA (horizontal 1024 × vertical 768 dots). Form an image.

  On the other hand, the LED array 17 is configured so that a large number of LEDs emitting light of RGB colors are regularly mixed, and light emission by time division for each color component is reflected on the entire inner surface. The light is condensed by a truncated pyramid-shaped housing 18 with a mirror attached thereto, and is converted into a luminous flux having a uniform luminance distribution by an integrator 19, and then totally reflected by a mirror 20 and applied to a micromirror element 16.

  Then, an optical image is formed by the reflected light from the micromirror element 16, and the formed optical image is projected and displayed via a projection lens unit 21 on a screen (not shown) to be projected.

  The LED array 17 is driven and controlled by the R driver 22, the G driver 23, and the B driver 24 in a time-sharing manner, and emits light in RGB primary colors.

  The R driver 22, the G driver 23, and the B driver 24 drive the LED groups of individual color components constituting the LED array 17 with timing and drive current based on a control signal from the projection light processing unit 25.

  The projection light processing unit 25 controls the light emission timing and driving current by the R driver 22, G driver 23, and B driver 24 according to the image data given from the projection image processing unit 15.

The projection light processing unit 25 also controls operations of the zoom lens 21 a and the focus lens 21 b in the lens optical system that constitutes the projection lens unit 21.
That is, the zoom lens 21a moves along the direction of the projection optical axis by driving the stepping motor (M) 21c, and its position is detected by the position sensor 21d. The projection light processing unit 25 controls the driving of the stepping motor 21c and inputs the detection output of the position sensor 21d to grasp the step position of the zoom lens 21a at that time.

  Similarly, the focus lens 21b is moved along the direction of the projection optical axis by driving a stepping motor (M) 21e, and its position is detected by the position sensor 21f. The projection light processing unit 25 drives and controls the stepping motor 21e and inputs the detection output of the position sensor 21f to grasp the step position of the focus lens 21b at that time.

  The CPU 26 controls all the operations of the above circuits. The CPU 26 performs a control operation in the data projector apparatus 10 using a main memory 27 composed of DRAM and a program memory 28 which is an electrically rewritable nonvolatile memory storing an operation program, various fixed data, and the like. Run.

  In addition, the program memory 28 stores a volume table 28a, which will be described later, which is a lookup table.

  The CPU 26 executes various projection operations in response to key operation signals from the operation unit 29.

  The operation unit 29 transmits / receives infrared light between a key operation unit provided on the main body of the data projector device 10 and a bidirectional remote controller (hereinafter referred to as bidirectional remote controller) dedicated to the data projector device 10. And a key operation signal based on a key operated by a user using a key operation unit of the main body or a bidirectional remote controller.

  The operation unit 29 is used for both the key operation of the main body of the data projector apparatus 10 and the bidirectional remote controller, for example, a power key for instructing power on / off, a cursor key for instructing each of the up / down / left / right pointer movements, and menu item selection and setting A menu key for performing, a zoom key for changing the projection zoom angle, a focus key for changing the focus position, and the like are provided.

The CPU 26 is further connected to the audio processing unit 30 via the system bus SB.
The sound processing unit 30 includes a sound source circuit such as a PCM sound source, converts the sound data given at the time of the projection operation into an analog signal, drives the speaker unit 31 to emit a loud sound, or generates a beep sound or the like if necessary. An analog audio signal is output to the outside of the data projector apparatus 10.

Next, the operation of the above embodiment will be described.
FIG. 2 shows processing contents mainly related to power control from the state in which the power of the data projector apparatus 10 is cut off. This process is executed by the CPU 26 reading out the operation program stored in the program memory 28 and developing and storing it in the main memory 27.

  Initially, the projection light processing unit 25 first drives the LED array 17 of the light source in a time-sharing manner using the R driver 22, the G driver 23, and the B driver 24 (step S101).

  At the same time, while performing projection processing according to the signal input from the input / output connector unit 11 (step S102), it is determined whether or not the focus key or the zoom key has been operated by the key operation on the operation unit 29. (Step S103).

  Here, if it is determined that the focus key or zoom key has not been operated, it is subsequently determined whether or not a certain time, for example, 1 [second] has elapsed since the focus key or zoom key was operated before that ( Step S104).

  This is determined from the measured time when the timer set in the main memory 27 by the CPU 26 is started immediately after the focus key or zoom key is operated. When the focus key or the zoom key is not operated, the timer does not measure time, so the determination result is always NO.

  Thus, the processes in steps S102 to S104 are repeatedly executed, and while the projection process is being performed, the focus key or the zoom key is operated, or waiting for a certain time to elapse after the key operation is performed.

  When the focus key or the zoom key is operated, if it is determined in step S03, the focus lens 21b or zoom lens 21a is operated by the stepping motor 21e or 21c from the CPU 26 via the projection light processing unit 25 corresponding to the operated key. Is moved (step S105).

  Along with the movement of the lens, the timer set in the main memory 27 is started (step S106), and then the process returns to step S102 again.

  When a certain time, for example, 1 [second] elapses after the focus key or zoom key of the operation unit 29 is operated, it is determined in step S104, and the focus lens 21b and zoom lens 21a of the projection lens unit 21 at that time are determined. The position is detected using the position sensor 21f and the position sensor 21d.

Then, the volume adjustment range is read by referring to the volume table 28a stored in the program memory 28 according to the detected content (step S107).
FIG. 3 illustrates the contents of the volume table 28 a stored in the program memory 28. Here, for example, it is possible to project at a projection distance in the range of 0.8 [m] to 5.6 [m] (100-type projection) by the focus lens 21b, and one zoom lens 21a has the narrowest angle. It is assumed that the stepping motor 21c can be variably set within a range of 256 steps from the widest angle to the widest angle.

  In addition, it is assumed that the sound processing unit 30 that generates an analog sound signal in the data projector device 10 can adjust the sound volume within a total of 101 steps from 0 (silence) to 100 (maximum sound volume).

  As shown in the figure, the projection distance and the zoom angle are divided into five ranges, the table is divided into a total of 25 areas, and a fixed adjustment width is set for each area. Here, as the projection distance increases and the zoom angle increases, the volume adjustment range is synergistically increased in the positive direction.

  For example, when the projection distance is “4.0 to 5.6 [m]” and the zoom angle is “103 to 153 [step])”, the sound volume is set to the step value set at that time. It indicates that adjustment is made to increase by “20 (step)”.

  By doing so, it is possible to simplify the operation of the user manually increasing the volume by adjusting the volume to be increased in response to an increase in the projected image.

  On the contrary, as the projection distance becomes shorter and the zoom angle becomes narrower, the adjustment range of the volume is set to be synergistically increased in the negative direction.

  For example, when the projection distance is “0.8 to 1.1 [m]” and the zoom angle is “52 to 102 [step])”, the volume is set to the step value set at that time. This indicates that adjustment is made to decrease by “30 (steps)”.

  By doing so, it is possible to simplify the operation of the user manually reducing the volume by adjusting the volume to be smaller in response to the projection image becoming smaller.

  Thus, in step S107, a value for adjusting the volume is read from the volume table 28a based on the position of the focus lens 21b and the position of the zoom lens 21a, and the sound processing unit 30 performs adjustment by increasing / decreasing the volume based on the read value. After (step S108), the process returns to step S101.

  As described above in detail, according to the present embodiment, in order to simplify the operation required at the time of installation of the apparatus as much as possible and not to generate an inappropriate sound volume that does not match the installation environment, the installation environment, particularly the projection distance and the projection angle of view (zoom). It is possible to automatically set a sound volume that seems to be appropriate according to the angle.

  In addition, the volume adjustment according to the projection distance and the projection angle of view (zoom angle) can be translated into the volume adjustment according to the projection screen size. For example, it is possible to project at an appropriate volume according to the screen size. Therefore, you can expect a more realistic projection.

  Furthermore, in the above-described embodiment, the volume is adjusted at the time of start-up associated with power-on, so that it is possible to reduce the burden even in a situation where various settings tend to concentrate as the apparatus is installed.

  In the above embodiment, the sound volume is adjusted from each lens position as a result of the operation after a certain period of time has elapsed since the operation on the focus lens 21b and the zoom lens 21a. Even if it is performed, the volume is not adjusted each time, but the volume is adjusted after the lens position is determined to some extent, thereby preventing the volume from being increased or decreased sensitively to a fine operation of the lens position. be able to.

  In the above embodiment, the volume adjustment for the positions of the focus lens 21b and the zoom lens 21a is performed based on the volume table 28a which is a lookup table stored in the program memory 28. As a result, it is possible to simplify the time and effort relating to the volume adjustment and realize easy and quick control.

Unlike the above-described embodiment, for example, after dividing the cases according to the positions of the focus lens 21b and the zoom lens 21a, the volume is finely adjusted according to a calculation formula set in advance for each case. It is good to do.
Thus, by calculating the value of the volume to be adjusted by an appropriate calculation formula each time, it is considered that more linear and comfortable volume adjustment can be realized.

  Further, in the above embodiment, the position of the focus lens 21b and the zoom lens 21a, that is, the factors of both the projection distance and the projection angle of view (zoom angle) are adjusted to adjust the volume, but the present invention is not limited to this. The adjustment may be made based on only one of the factors.

  When the data projector 10 includes an externally connected speaker, the data of the table 28a having the volume adjustment value is transmitted superimposed on the audio data, and the audio data whose volume is adjusted by the external speaker is released. It can also be set as the structure made to sound.

  In addition, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention in the implementation stage. Further, the functions executed in the above-described embodiments may be combined as appropriate as possible. The above-described embodiment includes various stages, and various inventions can be extracted by an appropriate combination of a plurality of disclosed constituent elements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, if the effect is obtained, a configuration from which the constituent requirements are deleted can be extracted as an invention.

  DESCRIPTION OF SYMBOLS 10 ... Data projector apparatus, 11 ... Input / output connector part, 12 ... Input / output interface (I / F), 13 ... Image conversion part, 14 ... Video RAM, 15 ... Projection image processing part, 16 ... Micromirror element (SOM) 17 ... LED array, 18 ... housing, 19 ... integrator, 20 ... mirror, 21 ... projection lens unit, 21a ... zoom lens, 21b ... focus lens, 21c ... stepping motor (M), 21d ... position sensor, 21e ... stepping Motor (M), 21f ... Position sensor, 22 ... R driver, 23 ... G driver, 24 ... B driver, 25 ... Projection light processing unit, 26 ... CPU, 27 ... Main memory, 28 ... Program memory, 28a ... Volume table , 29 ... operation unit, 30 ... audio processing unit, 31 ... speaker unit, SB ... Sutemubasu.

Claims (7)

An input means for inputting an image signal and a sound signal;
It has a lens optical system that includes at least one of a focus lens that changes the focus position of the projection image and a zoom lens that changes the projection angle of view, and forms an optical image corresponding to the image signal input by the input means. Projecting means for projecting by the lens optical system,
A sound emitting means for outputting a sound corresponding to the sound signal input by the input means;
Sound control means for variably setting the sound volume in the sound emitting means according to the position of at least one of the focus lens and zoom lens constituting the optical lens system of the projection means;
Comprising
The sound control means variably sets the sound volume at the sound emitting means after an elapse of a predetermined time from an adjustment operation on at least one of the focus lens and zoom lens constituting the optical lens system of the projection means. apparatus. The projection apparatus according to claim 1, wherein the sound control unit variably sets a sound volume in the sound emitting unit at the time of startup accompanying power-on. The sound control means variably sets the sound volume at the sound emitting means with reference to a lookup table prepared in advance based on the position of at least one of the focus lens and zoom lens constituting the optical lens system of the projection means. The projection apparatus according to claim 1, wherein: The sound control means executes an arithmetic expression prepared in advance based on the position of at least one of the focus lens and zoom lens constituting the optical lens system of the projection means, and the sound emission means according to the calculation result. The projection apparatus according to claim 1, wherein the sound volume is variably set. A projection system comprising a projection device for outputting a sound signal, and a sound emitting device which emits sound based on the sound signal the projector is output,
The projection apparatus is
An input means for inputting an image signal and a sound signal;
It has a lens optical system that includes at least one of a focus lens that changes the focus position of the projection image and a zoom lens that changes the projection angle of view, and forms an optical image corresponding to the image signal input by the input means. Projecting means for projecting by the lens optical system,
The volume of the sound signal is adjusted according to the position of at least one of the focus lens and the zoom lens after a lapse of a certain time from the adjustment operation on at least one of the focus lens and the zoom lens constituting the optical lens system of the projection unit. Volume data acquisition means for acquiring volume data to be variably set;
The sound emitting device includes output means for superimposing and outputting the volume data acquired by the volume data acquisition means on the sound signal,
The sound emitting device is
A sound signal input means for the volume data in which the output means has output to input signal superimposed on the sound signal,
A projection system comprising: sound emission means for adjusting the volume based on a signal input by the sound signal input means and emitting the sound signal. It has a lens optical system including at least one of an input unit for inputting an image signal and a sound signal, a focus lens for changing the focus position of the projection image, and a zoom lens for changing the projection angle of view, and is input at the input unit. Sound control of a projection apparatus including a projection unit that forms a light image according to an image signal and projects the light by the lens optical system, and a sound emitting unit that outputs a sound according to a sound signal input from the input unit A method,
After a predetermined time has elapsed from the adjustment operation on at least one of the focus lens and zoom lens constituting the optical lens system of the projection unit, the sound emitting unit is operated according to the position of at least one of the focus lens and zoom lens. A sound control method characterized by variably setting a volume. It has a lens optical system including at least one of an input unit for inputting an image signal and a sound signal, a focus lens for changing the focus position of the projection image, and a zoom lens for changing the projection angle of view, and is input at the input unit. The projection apparatus includes a projection unit that forms a light image according to the image signal and projects the light by the lens optical system, and a sound emitting unit that outputs a sound according to the sound signal input from the input unit. A program executed by a computer,
After a predetermined time has elapsed from the adjustment operation on at least one of the focus lens and zoom lens constituting the optical lens system of the projection unit, the sound emitting unit is operated according to the position of at least one of the focus lens and zoom lens. A program for causing a computer to execute a step of variably setting a volume.

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