JP6387624B2 - Projection system, output control method and program - Google Patents

Projection system, output control method and program Download PDF

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JP6387624B2
JP6387624B2 JP2014032804A JP2014032804A JP6387624B2 JP 6387624 B2 JP6387624 B2 JP 6387624B2 JP 2014032804 A JP2014032804 A JP 2014032804A JP 2014032804 A JP2014032804 A JP 2014032804A JP 6387624 B2 JP6387624 B2 JP 6387624B2
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image
audio
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output control
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JP2015158566A (en
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貴行 蔀
貴行 蔀
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株式会社リコー
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Description

  The present invention relates to a projection system including a plurality of image projection apparatuses capable of projecting an image onto a projection plane and outputting sound, a method for controlling the output of the sound, and a program for causing a computer to execute the method. About.

  A projector and a speaker are used to project an image such as a video image onto a projection surface for a user in a specific space and output sound according to the image. There is known a multi-projection system that uses a plurality of projectors and speakers and adjusts an image to be projected in a space and output sound so as to be optimal for a user inside the projector (see, for example, Patent Document 1). ).

  In the above multi-projection system, the sound data output from each speaker is switched according to the position information of the user in the space, and the sound is adjusted so as to be optimal. However, in this case, when a plurality of users view and listen at different positions, there is a problem that the variation in acoustic effect for each user is large. In addition, a plurality of speakers have to be installed separately from the plurality of projectors, and there is a problem that the scale of equipment increases.

  When the user views alone, the above-described variation in acoustic effect does not occur. Further, there is a type in which a projector has a built-in speaker, and if this built-in speaker is used, it is not necessary to install a separate speaker. However, this built-in speaker is often a monaural speaker, and there is a problem in that it cannot provide a realistic sound effect.

  Therefore, a system that can provide a realistic sound effect when there is only one user without providing a speaker separately, and can provide a uniform sound effect when there are multiple users. It was desired to provide a method.

  In view of the above problems, the present invention is a projection system including an information processing apparatus and a plurality of image projection apparatuses, and each image projection apparatus measures distance from a user existing within a predetermined range; A result transmitting means for transmitting the distance measured by the distance measuring means to the information processing apparatus as a measurement result, image data, audio data, and output control information for controlling the output of the audio data from the information processing apparatus. A data receiving means for receiving the data frame, and an output means for projecting an image on the projection plane and outputting sound based on the data frame received by the data receiving means. Result receiving means for receiving the transmitted measurement results, and each data frame to be sent to each image projection device based on each of the plurality of measurement results received by the result receiving means Data generating means for generating, each data frame generated by the data generating means, and a data transmission means for transmitting to each of the image projection apparatus, the projection system is provided.

  According to the present invention, it is possible to provide a realistic sound effect when there is only one user without separately installing a speaker, and to provide a uniform sound effect when there are multiple users. Can do.

The figure which showed schematic structure of the projection system of this embodiment. The figure which showed the structural example of the optical system of the projector with which the projection system shown in FIG. 1 is provided. The figure which illustrated the hardware constitutions of PC with which the projection system shown in FIG. 1 is provided. The figure which illustrated the measurement range which can be measured with the ranging sensor of a projector. The figure explaining the data which a projector and PC transmit / receive. The functional block diagram of a projector and PC. The flowchart which illustrated the flow of the process performed with a projector. The flowchart which illustrated the flow of the process performed by PC. The figure which illustrated audio | voice output control information transmitted to each projector from PC. The figure which showed one example of audio | voice output control. The figure which showed another example of audio | voice output control.

  FIG. 1 is a diagram illustrating a configuration example of a projection system including a plurality of image projection apparatuses and an information processing apparatus according to the present embodiment. The imaging system shown in FIG. 1 includes three projectors 10 to 12 as a plurality of image projection apparatuses, and a PC 13 as an information processing apparatus. Here, an example in which three projectors 10 to 12 are used will be described. However, there may be two projectors or four or more projectors. Moreover, although the example which uses PC as an information processing apparatus is demonstrated, a server, a smart phone, a tablet terminal etc. may be sufficient as an information processing apparatus.

  Since the projectors 10 to 12 have the same configuration, only the projector 10 will be described. The projector 10 includes an optical system 20 as a projection unit that projects an image on a projection plane. In FIG. 1, an image of a car is projected and displayed on a projection surface such as a screen or a wall as an image.

  The optical system 20 is not limited to this, but can include, for example, a lens, a light source, a mirror, and a light valve. The number of lenses and mirrors is not limited to one, and a plurality of lenses and mirrors can be used. As the light source, a halogen lamp, a xenon lamp, an LED (Light Emitting Diode), or the like can be used. One light valve may correspond to three colors, and each may use three colors one by one, and then synthesize an image, or may utilize reflected light from the light valve. The optical system 20 can modulate the light from the light source with a light valve and project it with magnification by a lens. The optical system 20 is not limited to a light valve system using a light valve, but may be a CRT system using a CRT (Cathode Ray Tube).

  The projector 10 includes a speaker 21 as sound output means for outputting sound. As the speaker 21, a monaural speaker generally used in a projector can be adopted. However, the present invention is not limited to this, and a stereo speaker may be used. In addition, the projector 10 includes an antenna 22 for performing wireless communication with the PC 13 and a distance measuring sensor 23 as a distance measuring means for measuring a distance with a person existing within a predetermined range.

  The antenna 22 is connected to a transceiver (not shown). The transceiver includes a circuit that generates radio waves having a constant frequency, a modulation circuit that modulates the radio waves and transmits information and data, and a demodulation circuit that extracts information and data from the modulated radio waves. The transceiver can also include an amplifier circuit that amplifies radio waves to be transmitted and received.

  The distance measuring sensor 23 irradiates light such as infrared rays and laser, measures the time until the reflected light is received, and converts the measured time into a distance, thereby measuring the distance to a person within a predetermined range. To do. As the distance measuring method, a method for obtaining a distance directly from the above-described reciprocation time and speed of light, and a method for obtaining a distance from a phase difference during the reciprocation of the modulated wave by irradiating light modulated with a sine wave at an arbitrary frequency. There are methods, and any method can be used. In ranging, errors occur due to changes in temperature, atmospheric pressure, and humidity. For this reason, the sensor which measures these, and the circuit which correct | amends the distance measured by the ranging sensor 23 based on the data measured by the sensor are provided, and a more exact distance can also be measured.

  The PC 13 is a desktop PC, notebook PC, or tablet PC that can wirelessly communicate with the projectors 10 to 12, and acquires distance information of the distance measured by the distance measuring sensor 23 included in the projectors 10 to 12 as a measurement result. . Based on the acquired measurement results, the PC 13 includes data including image data for displaying images on the projectors 10 to 12, sound data for outputting sound, and sound output control information for controlling the output of the sound. Generate a frame. Then, the PC 13 transmits the generated data frames to the projectors 10 to 12. A method for generating a data frame from the measurement result, audio output control information, and the like will be described later.

  A configuration example of the optical system 20 of the projector 10 is shown in FIG. 2 and the configuration will be briefly described. The projector 10 is a color projector and includes a light source 30, dichroic mirrors 31 and 32, reflection mirrors 33 to 35, light valves 36 to 38, a dichroic prism 39, and a projection lens 40.

  The light emitted from the light source 30 is separated into light of three colors of red, green, and blue by the dichroic mirrors 31 and 32. For example, the dichroic mirror 31 transmits only the red light component and reflects the green light component and the blue light component, and the dichroic mirror 32 transmits the blue light component and reflects the green light component among the reflected components. .

  The light transmitted through the dichroic mirror 31 is incident on the red light valve 36 by the reflection mirror 35. The light reflected by the dichroic mirror 31 and the dichroic mirror 32 is incident on the green light valve 37. The light reflected from the dichroic mirror 31 and transmitted through the dichroic mirror 32 is reflected by the reflection mirrors 33 and 34 and is incident on the blue light valve 38.

  The light valves 36 to 38 modulate incident light based on given image data to form an image of each color light. Each color light is input to the dichroic prism 39. The dichroic prism 39 combines the three colors of modulated light to form a color image. The projection lens 40 enlarges and projects the light synthesized by the dichroic prism 39 onto a screen or the like that is a projection surface, and displays the color image on the projection surface.

  The optical system 20 of the projector 10 may further include a plurality of lenses such as a lens array and a relay lens. The lens array can be used for appropriately allowing the light emitted from the light source 30 to enter the dichroic mirror 31. The relay lens can be used to prevent light utilization efficiency from being reduced due to diffusion or the like for light having a long optical path length.

  The hardware configuration of the PC 13 will be briefly described with reference to FIG. The PC 13 includes a CPU 50, a ROM 51, a RAM 52, an HDD 53, a communication I / F 54, an external device I / F 55, an external memory I / F 56, a display device 57, and an input device 58 as hardware. These pieces of hardware are connected to each other via a bus 59 so that data and the like can be exchanged.

  The CPU 50 performs overall control of the PC 13. The CPU 50 executes various programs stored in the ROM 51 and the HDD 53 and performs predetermined processing. The ROM 51 stores a boot program that performs processing from when the power is turned on until the OS is started, and a program such as a BIOS (Basic Input / Output System) that controls the HDD 53, the external memory I / F 56, and the like. The HDD 53 stores an OS, various applications, various data, and the like. The RAM 52 is used as a work area when the CPU 50 executes the above programs and performs various controls.

  The communication I / F 54 enables wireless communication with each projector 10-12. The communication I / F 54 includes a transceiver, and can perform wireless communication through a wireless LAN connection such as Wi-Fi, for example.

  The external device I / F 55 connects an external device having a connection standard such as USB (Universal Serial Bus) or IEEE 1394, and inputs / outputs data and the like. The external memory I / F 56 is connected to an external memory such as a CD-ROM, DVD, or SD card, and inputs / outputs data between the HDD 53 and the external memory. The display device 57 is a display that displays various data on a display screen, and the input device 58 is a device that performs various input operations by the user and receives the input. As the input device 58, a keyboard, a mouse, a touch pad, or the like can be used. The display device 57 and the input device 58 may be separate devices such as a display and a keyboard, but a device having both functions such as a touch panel may be used.

  Although not shown, each of the projectors 10 to 12 includes a CPU, a memory such as a ROM or a RAM, and a communication I / F that are the same as the PC 13. With these devices, it is possible to operate the distance measuring sensor 23, perform wireless communication with the PC 13, output sound from the optical system 20 and the speaker 21, and project and display an image on the projection plane.

  A distance measurement range measured by the distance measuring sensor 23 included in each of the plurality of projectors 10 to 12 included in the projection system will be described with reference to FIG. The projectors 10 to 12 are arranged at regular intervals, and the interval D is appropriately set so that the original one image is displayed by the three projectors 10 to 12 due to the characteristics of the optical system 20 of the projectors 10 to 12. It is determined as the distance that can be connected. As a method for calculating the distance D between the projectors 10 to 12, any method known so far can be employed. Since the calculation method is not directly related to the present invention, detailed description thereof is omitted.

  The measurement range of the distance measuring sensor 23 of each projector 10-12 is set to be within the range of the interval D between the projectors 10-12 and 2D or less. In other words, the measurement range is set as a range in which a range that can be measured by the distance measuring sensor 23 of the adjacent projector or a part of the range that overlaps the range. By setting this range, it is possible to eliminate missing measurement ranges between adjacent projectors, and to suppress the number of projectors with overlapping measurement ranges to one or less. Further, it is possible to prevent the determination process for determining the position of the person existing in the measurement range from being complicated.

  Next, each data exchanged by the wireless communication performed between each projector 10-12 and PC13 is demonstrated with reference to FIG. In FIG. 5, projectors 10 to 12 are referred to as “projector A”, “projector B”, and “projector C”, respectively.

  Each projector A-C wirelessly transmits distance information within each measurement range measured by each distance measurement sensor 23 to the PC 13 as a measurement result. The measurement result includes no distance information when there is no user within the measurement range, only one distance information for one person, and plural distance information for a plurality of persons. The distance information can be information such as 1 m or 1.5 m, for example.

  When the PC 13 receives the measurement results from the projectors A to C, the PC 13 generates data frames for the projectors A to C based on the measurement results and transmits the data frames to the projectors A to C. The data frame includes image data, audio data, and audio output control information. The image data is, for example, video data obtained by dividing the original video into three so that the projectors A to C can simultaneously display and form one video. The PC 13 transmits a data frame including video data corresponding to the arrangement position to each of the projectors A to C. In FIG. 5, video data (left) is transmitted to projector A, video data (center) is transmitted to projector B, and video data (right) is transmitted to projector C.

  The PC 13 transmits audio data immediately before or after the video data. In FIG. 5, audio data is transmitted immediately before video data. The audio data is transmitted to all projectors A to C in the original multi-channel state. The audio output control information is information generated by the PC 13 based on the distance information transmitted by the projectors A to C, and is information for controlling audio output. Specifically, it is information that defines which channel 21 the sound of which channel is output from.

  The audio output control information is transmitted immediately after the video data in FIG. Note that the transmission order of video data, audio data, and audio output control information is arbitrary, and may be transmitted in any order. Basically, from reception of measurement results to transmission of data frames including these can be performed at intervals of one frame of video.

  From the above, the projection system includes a plurality of image projection apparatuses such as the plurality of projectors 10 to 12 and an information processing apparatus such as the PC 13, and each includes a functional unit or functional unit as described below. . FIG. 6 is a functional block diagram of the projector 10 and the PC 13. Since the projectors 11 and 12 have the same configuration as the projector 10, the description thereof is omitted here.

  The projector 10 functions as a function unit, such as a distance measuring unit 60 that measures the distance to a user existing within a predetermined measurement range, and a result transmission that transmits the distance measured by the distance measuring unit 60 to the PC 13 as a measurement result. Part 61. The distance measuring unit 60 is realized by the distance measuring sensor 23, and the result transmitting unit 61 is realized by the communication I / F.

  The projector 10 includes a data receiving unit 62 that receives data frames including image data, audio data, and audio output control information for controlling the output of the audio data from the PC 13. Further, the projector 10 includes an output unit 63 that projects an image on a projection surface and outputs sound based on the data frame received by the data receiving unit 62. The data receiving unit 62 is realized by a communication I / F, and the output unit 63 is realized by the optical system 20 and the speaker 21. These processes are realized by causing the CPU to execute a program stored in a memory built in the projector 10 and operating the distance measuring sensor 23 and the like under the control of the program.

  The PC 13 includes a result receiving unit 70 that receives the measurement result transmitted from the result transmitting unit 61. Further, the PC 13 includes a data generation unit 71 that generates a data frame to be transmitted to the projectors 10 to 12 based on the measurement result received by the result reception unit 70. The data generation unit 71 acquires image data and audio data when generating a data frame. Therefore, the PC 13 includes a data storage unit 72 that stores the image data and audio data. The PC 13 also includes a data transmission unit 73 that transmits the data frame generated by the data generation unit 71 to the projectors 10 to 12.

  These processes are realized by the CPU 50 executing a program stored in the HDD 53 provided in the PC 13 and operating the communication I / F 54 and the like under the control of the program. The data storage unit 72 is realized by the HDD 53.

  The processing performed by each of these functional units will be described in detail with reference to the flowcharts shown in FIGS. First, the processing on the projector side will be described with reference to FIG. The projector 10 starts operating from step 700, and in step 705, the distance measurement unit 60 measures the distance to the user existing within the measurement range. The distance measuring unit 60 passes the distance information of the distance obtained by the measurement to the result transmitting unit 61 as a measurement result.

  In step 710, the result transmission unit 61 transmits the measurement result to the PC 13. Transmission to the PC 13 can be performed using the IP address of the PC 13 or a MAC address for uniquely identifying the PC 13. In step 715, it is determined whether the data receiving unit 62 has received a data frame from the PC 13. If not received, the process returns to step 705 and the distance measurement unit 60 measures the distance again. If received, the process proceeds to step 720.

  In step 720, since the data receiving unit 62 has received the data frame, the output unit 63 outputs an image and sound. The output unit 63 projects and displays an image based on the image data, and outputs a sound based on the sound data. The image is displayed by projecting the image of the image data included in the data frame as it is, and the sound of the channel specified by the sound output control information is output from the sound of the multi-channel state. When audio output control information different from the audio output control information for the previously output audio is received, the output audio is switched according to the received audio output control information.

  After these outputs are completed, in step 725, it is determined whether communication with the PC 13 is stopped. Communication is stopped when the wireless communication function of the PC 13 is turned off or when the power of the PC 13 is turned off. If it is determined in step 725 that the operation has not been stopped, the process returns to step 705, the same processing as described above is performed, and the next data frame is output. If it is determined that the process has been stopped, the process proceeds to step 730 and the process is terminated. If communication is started again, the process starts from step 700.

  Next, processing on the PC 13 side will be described with reference to FIG. The PC 13 starts its operation from step 800, and in step 805, it is determined whether or not the result receiving unit 70 has received a measurement result from each projector 10-12. If not received, this determination is made until received. If received, the process proceeds to step 810.

  The PC 13 can include a result storage unit for storing the measurement result and a determination unit for determining the measurement result. In step 810, the determination unit determines whether the received measurement result matches the previous (immediately previous) measurement result. The result storage unit can store the measurement result in association with the measurement time or the reception time, and the determination unit acquires the previous measurement result that is the measurement result of the latest time from the measurement time or the reception time. Can do.

  The determination unit also determines the user distribution. Here, the determination is performed by the same determination unit, but a determination unit may be provided individually. If it is determined in step 810 that they do not match, the process proceeds to step 815, and the determination unit determines the distribution of users within each measurement range based on the received measurement results. For example, it is determined whether or not there are users in the measurement range, and if there are one or more users, in the case of a plurality of users, where many users are gathered.

  In step 820, the data generation unit 71 generates audio output control information according to the determination result determined by the determination unit. In addition to the determination result, the audio output control information is generated in consideration of the capability of the speaker 21 employed in each of the projectors 10 to 12 and the number of channels of output audio data. The audio output control information designates whether the original multi-channel audio is output as it is, the audio of a specific channel, or no audio is output to each projector 10-12.

  In addition, the data generation unit 71 acquires audio data corresponding to the image data of the image to be transmitted from the data storage unit 72, and divides the image into three and transmits three image data for transmission to the projectors 10 to 12. Generate. Then, the data generation unit 71 generates data frames each including the generated image data, audio data, and generated audio output control information, and passes them to the data transmission unit 73.

  In step 825, the data transmission unit 73 transmits each data frame to each corresponding projector 10-12. In step 830, it is determined whether communication with all projectors 10-12 has been stopped. If not stopped, the process returns to step 805 to wait for transmission of measurement results from the projectors 10 to 12.

  If it is determined in step 810 that they match, the process proceeds directly to step 825. At this time, the data generation unit 71 generates each data frame using the previously generated audio output control information without generating the audio output control information, and passes each data frame to the data transmission unit 73. In step 825, the data transmission unit 73 transmits each data frame to each projector 10-12. For this reason, PC13 can further be provided with the information storage part for memorize | storing audio | voice output control information. When communication with all the projectors 10 to 12 is stopped in step 830, the process proceeds to step 835 and the process is terminated. Also in this case, when communication is started again, the process starts from step 800.

  The audio output control information will be described in detail with reference to the table shown in FIG. The audio output control information can be provided as an audio output control signal, and can be a signal indicating channel information of audio data to be output to the speakers 21 included in the projectors 10 to 12.

  Each of the projectors 10 to 12 includes two speakers, which are spaced apart from each other by a predetermined interval, and can input audio data of Lch (left channel) and Rch (right channel) to each speaker. In the table shown in FIG. 9, the projectors 10 to 12 are set with the projector names “projector A”, “projector B”, and “projector C”, respectively. Each projector name is associated with the audio output control signal name “audio output control signal 1”, “audio output control signal 2”, and “audio output control signal 3”.

  Each audio output control signal is associated with two speakers, and it is set which channel audio is output to each speaker and no audio is output. In the table shown in FIG. 9, Lch sound is output from the speaker A of the projector A, Rch sound is output from the speaker B of the projector C, and no sound is output from the other speakers.

  For this reason, the projector A and the projector C divide the audio data based on the audio output control signals 1 and 3 and output from the designated speaker. A specific example for designating which speaker's sound is output from which speaker and which sound is not output will be described with reference to FIGS. These examples are merely examples, and the generation of the audio output control signal is not limited to these examples.

  FIG. 10 is a diagram illustrating an example in which only one user exists within the measurement range of the distance measuring sensors 23 of the plurality of projectors 10 to 12. In this example, the projector 11 measures the distance to the user and transmits the measurement result to the PC 13. At this time, since the projectors 10 and 12 do not measure anything, a measurement result indicating no distance information is transmitted to the PC 13.

  The PC 13 receives the measurement result measured by the projectors 10 to 12. Based on the measurement result, the PC 13 determines whether the user exists only in the measurement range of one projector or in the measurement ranges of a plurality of projectors. In the embodiment shown in FIG. 10, since only one distance information is obtained from the projector 11, the PC 13 determines that there is only one user in the measurement range of one projector 11.

  The PC 13 generates an optimal audio output control signal from the determination result, the format of audio data to be transmitted to each projector 10-12, the number of speakers 21 incorporated in each projector 10-12, and the like. In the embodiment shown in FIG. 10, the audio data transmitted to each projector 10 to 12 is multi-channel audio data, and each projector 10 to 12 includes only one speaker 21.

  When the user is alone and exists only in the measurement range of one projector 11, the sound output control signal may be generated so as to perform multi-channel sound output using the speakers 21 of the adjacent projectors 10 and 12. it can. Specifically, the audio output control signal can be set so that Lch sound is output from the speaker 21 of the projector 10 on the left side as viewed from the user, and Rch sound is output from the speaker 21 of the projector 12 on the right side. At this time, it can be set not to output from the speaker 21 of the central projector 11.

  The PC 13 transmits the image data and audio data to each of the projectors 10 to 12 as a data frame including the audio output control signal generated above. Receiving them, each projector 10-12 divides | segments audio | voice data according to the content of the audio | voice output control signal, and outputs a predetermined audio | voice from the designated speaker. Thus, by performing multi-channel audio output, it is possible to provide a realistic sound effect to the one user.

  Since the transmission of the measurement results from the projectors 10 to 12 is performed periodically, even if the user moves into the measurement range of the projector 10, an audio output control signal is generated in consideration thereof. For this reason, even if the user moves from place to place, a realistic sound effect can be provided to the user.

  When the user moves within the measurement range of the projector 10, the Lch sound can be set to be output from the speaker 21 of the projector 10 and the Rch sound can be output from the speaker 21 of the adjacent projector 11. At this time, it is possible to set so that no sound is output from the speaker 21 of the projector 12. Further, the Rch sound can be output with an increased sound volume corresponding to the longer distance from the speaker 21 than the Lch sound. Thereby, even when the user moves, a realistic sound effect can be provided as before the movement.

  FIG. 11 is a diagram illustrating an example in which a plurality of users exist within a measurement range by the distance measuring sensors 23 of the plurality of projectors 10 to 12. In this example, the projectors 10 and 11 measure the distance to the user and transmit the measurement result to the PC 13. At this time, since the projector 12 does not measure anything, a measurement result indicating no distance information is transmitted to the PC 13.

  The PC 13 receives the measurement result measured by the projectors 10 to 12. Based on the measurement result, the PC 13 determines whether the user exists within the measurement range of the plurality of projectors. In the embodiment shown in FIG. 11, the PC 13 obtains one or two pieces of distance information from the projectors 10 and 11, respectively, and therefore determines that the PC 13 exists within the measurement range of a plurality of projectors. Also in the embodiment shown in FIG. 11, the audio data transmitted to each projector 10-12 is multi-channel audio data, and each projector 10-12 includes only one speaker 21.

  If a user exists within the measurement range of a plurality of projectors and attempts to perform multi-channel audio output, the voice balance of the user existing within one of the measurement ranges is disrupted, making it difficult to hear. Therefore, in this case, even when multi-channel audio data is input, control is performed so that only audio that can be reproduced by the speakers 21 built in the projectors 10 to 12 is output.

  The audio data transmitted to each projector 10-12 is multi-channel stereo data, but there is one speaker 21 built in each projector 10-12. For this reason, the audio is output as either Lch or Rch monaural. By controlling in this way, a realistic sound effect cannot be provided, but a uniform sound effect can be provided to all users.

  The present invention has been described with the above-described embodiments as the projection system and the audio output control method, but the present invention is not limited to the above-described embodiments. Therefore, other embodiments, additions, changes, deletions, and the like can be changed within a range that can be conceived by those skilled in the art, and as long as the effects and advantages of the present invention are exhibited in any aspect, the present invention It is included in the range. Therefore, it is possible to provide a program for causing a computer to execute the audio output control method, a recording medium on which the program is recorded, and the like.

DESCRIPTION OF SYMBOLS 10-12 ... Projector, 13 ... PC, 20 ... Optical system, 21 ... Speaker, 22 ... Antenna, 23 ... Ranging sensor, 30 ... Light source, 31, 32 ... Dichroic mirror, 33-35 ... Reflection mirror, 36-38 ... Light valve, 39 ... Dichroic prism, 40 ... Projection lens, 50 ... CPU, 51 ... ROM, 52 ... RAM, 53 ... HDD, 54 ... Communication I / F, 55 ... External device I / F, 56 ... External memory I / F, 57 ... display device, 58 ... input device, 59 ... bus, 60 ... distance measurement unit, 61 ... result transmission unit, 62 ... data reception unit, 63 ... output unit, 70 ... result reception unit, 71 ... data generation 72, data storage unit, 73 ... data transmission unit

Special table 2012-529223 gazette

Claims (8)

  1. A projection system including an information processing device and a plurality of image projection devices,
    Each of the image projection devices
    A distance measuring means for measuring a distance to a user existing within a predetermined range;
    A result transmitting means for transmitting the distance measured by the distance measuring means to the information processing apparatus as a measurement result;
    Data receiving means for receiving a data frame including image data, audio data, and audio output control information for controlling output of the audio data from the information processing apparatus;
    Output means for projecting an image on a projection plane and outputting sound based on the data frame received by the data receiving means;
    The information processing apparatus is
    A result receiving means for receiving the plurality of measurement results transmitted from the plurality of image projection devices;
    Data generating means for generating each data frame to be transmitted to each of the image projection devices based on each of the plurality of measurement results received by the result receiving means;
    Each said data frame generated by the data generating means, viewed contains a data transmitting means for transmitting to each of the image projection apparatus,
    The data generation means outputs multi-channel audio data when there is only one user within the measurement range by the distance measurement means of the plurality of image forming apparatuses, and when there are a plurality of users within the measurement range, A projection system that generates each of the audio output control information included in each of the data frames so as to output audio data of one channel .
  2. The information processing apparatus further includes determination means for determining whether a user exists within each predetermined range based on each measurement result,
    The projection system according to claim 1, wherein the data generation unit generates each of the audio output control information included in each of the data frames in accordance with a determination result determined by the determination unit.
  3.   The projection system according to claim 2, wherein the output unit switches a sound to be output according to the sound output control information included in the data frame.
  4.   The audio data is multi-channel audio data, the audio output control information includes information specifying a channel of the audio data, and the output means includes the channel of the channel specified by the audio output control information. The projection system according to claim 3, wherein the sound is output based on sound data.
  5.   The plurality of image projection devices are arranged at a constant interval, and the predetermined range is a range that is adjacent to or partially overlaps a range that can be measured by a distance measuring unit of the adjacent image projection device. The projection system according to claim 1, wherein the projection system is set as follows.
  6.   The data generation unit generates each data frame including image data of each image obtained by dividing the original image into a plurality of images, and the data transmission unit generates each data frame according to an arrangement position of the plurality of image projection apparatuses. The projection according to claim 1, wherein the output unit projects an image on the projection plane based on the image data included in the data frame corresponding to the arrangement position. system.
  7. An output control method executed by a projection system including an information processing device and a plurality of image projection devices,
    Each of the image projection devices measures a distance from a user existing in each predetermined range;
    Each of the image projection devices transmits the measured distances to the information processing device as measurement results;
    The information processing apparatus receiving a plurality of the measurement results transmitted from the plurality of image projection apparatuses;
    The information processing device includes image data, audio data, and audio output control information for controlling the output of the audio data, which is transmitted to each of the image projection devices based on each of the received measurement results. Generating a data frame;
    The information processing apparatus transmitting the generated data frames to the image projection apparatuses;
    Each of the image projection devices receiving each of the data frames from the information processing device;
    Each said image projection device, based on each said data frame received by projecting each image onto a projection plane, viewed including the step of outputting each audio,
    In the step of generating the data frame, when there is only one user within the measurement range by the distance measuring means of the plurality of image forming apparatuses, multi-channel audio data is output, and there are a plurality of users within the measurement range. If so, an output control method for generating each of the audio output control information included in each of the data frames so as to output audio data of one channel .
  8. A program for causing a computer to execute each step included in the output control method according to claim 7.
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