JP2009048028A - Projector and data transfer system using projector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projector capable of transferring program data to the projector without separately providing a device for transferring program data, and to provide a transfer system using the projector. <P>SOLUTION: The projector 1 includes a projection mechanism section 50 capable of projecting data of firmware or the like as a light signal converted to a digital signal, a CCD 16 for receiving the light signal converted to the digital signal corresponding to the data of the firmware or the like transmitted from the projection mechanism section 50, a flash memory 44 for storing the program data received by the CCD 16, and a first controller 41 and a second controller 43 for controlling the light signal received by the CCD 16 so as to make the light signal be stored in the flash memory 44. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a projector and a data transfer system using the projector, and more particularly to a projector including a storage unit and a data transfer system using a projector including a storage unit.

  Conventionally, a data transfer system using a projector including a storage unit and a projector including a storage unit is known (see, for example, Patent Documents 1 and 2).

  Patent Document 1 discloses a projector that can transfer data from a host computer. The projector is configured to receive data from the host computer by being connected to the host computer via a communication cable. The projector also includes a serial connection port for connecting to a host computer via a communication cable, and a flash ROM (storage unit) for storing data received from the serial connection port.

  Japanese Patent Application Laid-Open No. 2004-228561 discloses a projector capable of transferring data from a personal computer. The projector is configured to receive data from a personal computer by being connected to the personal computer. The projector also includes a flash memory (storage unit) for storing data received from the personal computer.

JP 2001-92408 A JP 2001-142441 A

  However, the projector described in Patent Document 1 requires a host computer to transfer data to be stored in the flash ROM of the projector, and thus requires a separate device for transferring data to the projector. There is a point.

  Further, the projector described in Patent Document 2 requires a personal computer to transfer data to be stored in the flash memory of the projector, and thus requires a separate device for transferring data to the projector. There is a point.

  The present invention has been made to solve the above-described problems, and one object of the present invention is to transfer program data to a projector without providing a separate device for transferring program data. And a transfer system using the projector.

Means for Solving the Problems and Effects of the Invention

  A projector according to a first aspect of the present invention receives a projection mechanism that can project program data as a digital signal, and receives a digital signal corresponding to the program data transmitted from the projection mechanism. A light receiving unit, a storage unit that stores program data received by the light receiving unit, and a control unit that controls the program data received by the light receiving unit to be stored in the storage unit.

  In the projector according to the first aspect, as described above, the projection mechanism unit capable of projecting the program data as a digital signal, and the light converted into the digital signal corresponding to the program data projected by the projection mechanism unit By providing a light receiving unit for receiving the signal and a storage unit for storing the program data received by the light receiving unit, a digital signal corresponding to the program data is obtained using the projection mechanism unit of one of the projectors. The program data is projected by projecting the optical signal toward the other projector, and by receiving the optical signal converted into a digital signal corresponding to the projected program data by the light receiving unit of the other projector and storing it in the storage unit. Program between projectors without providing a separate device for transferring You can transfer data. In addition, by using a single projector by projecting a digital signal corresponding to the program data to the light receiving units of a plurality of projectors using the projection mechanism unit of one projector. Program data can be written to multiple projectors simultaneously. Thereby, the operation | work at the time of writing program data with respect to a some projector can be simplified.

  In the projector according to the first aspect, the light receiving unit preferably receives the first mode in which the optical signal converted into the digital signal by the projection mechanism unit is projected and the optical signal converted into the digital signal projected by the projection mechanism unit. The second mode is selectable. According to this configuration, the user can easily select the second mode by selecting the first mode in which the program data is projected by the projection mechanism unit and the second mode in which the program data is received by the light receiving unit. Program data can be written to the projector.

  In the projector according to the first aspect, preferably, the projection mechanism unit reflects the light from the light source lamp and the light source lamp into a digital signal and projects the signal as an optical signal, and has been transmitted from the outside. And an optical modulation element for reflecting an optical signal obtained by converting the program data into a digital signal in the direction of the light receiving unit. With this configuration, not only can the light from the light source lamp be converted into a digital signal and projected as an optical signal to the outside by one light modulation element, but also the program data transmitted from the outside can be converted into a digital signal. The converted optical signal can be reflected in the direction of the light receiving unit. Accordingly, it is not necessary to separately provide a component for reflecting an optical signal transmitted from the outside into which the program data is converted into a digital signal in the direction of the light receiving unit, and thus it is possible to suppress an increase in the number of components.

  In this case, it is preferable to further include a light shielding unit for preventing light from the light source lamp of the projection mechanism unit from reaching the light modulation element when receiving an optical signal obtained by converting the program data into a digital signal. With this configuration, when receiving an optical signal in which the program data is converted into a digital signal, the light from the light source lamp can be blocked by the light blocking unit so that it does not reach the light modulation element. Only the optical signal obtained by converting the program data transmitted from the outside into a digital signal can be reflected by the light modulation element and reach the light receiving unit. Thereby, it is possible to cause the light receiving unit to receive accurate program data.

  A data transfer system using a projector according to a second aspect of the present invention includes a projection mechanism that can project program data as a digital signal, and a digital signal corresponding to the program data transmitted from the projection mechanism. A first projector and a second projector including a light receiving unit for receiving and a storage unit for storing program data received by the light receiving unit. The first projector converts the program data into a digital signal by the projection mechanism unit. The second projector is configured to receive the optical signal obtained by converting the program data into a digital signal by the light receiving unit and store it in the storage unit.

  In the data transfer system using the projector according to the second aspect, as described above, the projection mechanism unit capable of projecting the program data as a digital signal and corresponding to the program data projected by the projection mechanism unit. The projector of the first projector includes a first projector and a second projector including a light receiving unit for receiving the optical signal converted into a digital signal and a storage unit for storing program data received by the light receiving unit. The optical signal converted into digital signal corresponding to the program data is projected toward the second projector by using the projection mechanism unit, and converted into the digital signal corresponding to the projected program data by the light receiving unit of the second projector. The received optical signal is received and stored in the storage unit. Mudeta can be transferred program data projectors each other without separately providing a device for transferring. In addition, the program data of the first projector is converted into a digital signal and projected as an optical signal, and the optical signal of the program data converted into a digital signal is received by the light receiving unit of the second projector and recorded in the storage unit. With this configuration, program data can be simultaneously written to a plurality of second projectors using one first projector. Thereby, the operation | work at the time of writing program data with respect to a some projector can be simplified.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view showing the overall structure of a projector according to an embodiment of the present invention. FIG. 2 is a plan view showing the internal structure of the projector of FIG. 3 to 7 are diagrams showing the configuration of the projector according to the embodiment of the present invention shown in FIG. First, the configuration of the projector 1 according to an embodiment of the invention will be described with reference to FIGS.

  A housing 2 of the projector 1 according to an embodiment of the present invention includes a front housing 3, a rear housing 4, an upper housing 5, and a lower housing 6, as shown in FIG. A lens insertion portion 3a is formed on the end side of the front housing 3 in the arrow X1 direction.

  In the present embodiment, one lens 7 for projecting an image and allowing light from the outside to enter is inserted into the lens insertion hole 3a. Further, behind the upper surface of the upper housing 5 (in the direction of the arrow Y2), a menu button 8a on which a menu screen is projected when pressed and a writing mode for writing firmware as an operation program of the projector 1 are selected. A plurality of operation buttons 8 including a write mode button 8b. Further, by operating the operation button 8 in a state where the menu screen is projected, a transmission mode for transmitting firmware is selected for the projector 1 in which the writing mode is selected. Further, a display unit 9 is provided in the vicinity of the operation button 8 for displaying the state of the projector 1 by turning on or blinking.

  Here, in the present embodiment, as shown in FIG. 2, a projection mechanism unit 50 for converting data such as firmware into a digital signal and projecting it as an optical signal together with video light is provided inside the housing 2 of the projector 1. Is provided. The projection mechanism unit 50 includes a light source lamp 10 including a bulb 10a that is a light source and a reflector 10b that reflects and collects light emitted from the bulb 10a. A color wheel 20 for sequentially changing the light emitted from the light source lamp 10 to red, blue, green and white light is disposed on the side of the light source lamp 10 in the arrow X1 direction. The color wheel 20 will be described in detail later. A light tunnel 12 and a relay lens 13 for allowing the light transmitted through the color wheel 20 to reach the mirror 11 in a state where the light transmitted through the color wheel 20 is condensed on the side of the color wheel 20 in the light traveling direction (arrow X1 direction). And are arranged. The mirror 11 is provided to reflect the light collected by the relay lens 13 in the direction of a DMD (Digital Micromirror Device) 14.

  Further, as shown in FIG. 2, the DMD 14 reflects the light reflected by the mirror 11 and collected by the condenser lens 15 in the direction of the lens 7, and data such as firmware incident through the lens 7. Is provided to reflect the optical signal 200 converted into a digital signal in the direction of a CCD 16 (Charge Coupled Device). The DMD 14 is an example of the “light modulation element” in the present invention, and the CCD 16 is an example of the “light receiving unit” in the present invention. In addition, a circuit portion 40 made of a wiring board is installed at the rear portion (arrow Y2 direction side) of the lower housing 6.

  As shown in FIGS. 3 to 5, the color wheel 20 is rotatably attached to a motor shaft 22 a (see FIG. 5) of a motor 22 fixed to a metal (made of sheet metal) color wheel support 21. ing. Specifically, as shown in FIG. 5, the color wheel 20 is made of a metal that fixes a plurality of color filter portions 23 fitted in the motor shaft 22 a and the resin color filter portion 23 from the opposite side of the motor 22. The first fixing member 24 and the second fixing member 25, and a wheel portion 27 fixed to the color filter portion 23 via a metal spacer 26. Thus, the color wheel 20 is configured to rotate with the rotation of the motor shaft 22a of the motor 22. As shown in FIGS. 3 and 4, the wheel portion 27 of the color wheel 20 is provided with a black light-absorbing portion 27 a for detecting the rotational angle position of the color wheel 20. A wiring board 28 is fixed to the color wheel support portion 21. On the wiring board 28, a sensor 29 is provided which is a light reflection type sensor for detecting the rotational angle position of the color wheel 20 by detecting the light absorption part 27 a of the wheel part 27.

  Further, as shown in FIG. 4, the color wheel support portion 21 is provided with a motor escape hole 21a and three screw insertion holes 21b. As shown in FIG. 5, the motor 22 includes an attachment portion 22 b for fixing to the color wheel support portion 21. The mounting portion 22b has a screw insertion hole 22c at a position corresponding to the screw insertion hole 21b of the color wheel support portion 21. A screw 30 is inserted from the color wheel support portion 21 side into the screw insertion hole 21b of the color wheel support portion 21 and the screw insertion hole 22c of the mounting portion 22b of the motor 22 from the motor 22 side by the nut 31. The motor 22 is fixed to the color wheel support portion 21 by being fastened.

  Further, in the present embodiment, the plurality of color filter portions 23 of the color wheel 20 are configured to transmit light from the light source lamp 10 (see FIG. 2) as shown in FIG. 23a, a blue region 23b, a green region 23c, a white region 23d, and a light shielding region 23e. The color filter unit 23 rotates at a high speed (about 7200 rpm), thereby sequentially changing the color of light from the light source lamp 10 (see FIG. 2) to be transmitted at a high speed, so that the lens 7 of the projector 1 (FIG. 2). It is possible to project the image projected from (see) so that it can be seen by human eyes as if it was colored (mixed color). The light shielding area 23e is an example of the “light shielding means” in the present invention.

  Further, as shown in FIGS. 6 and 7, the circuit unit 40 includes a first control unit 41 including a CPU that controls the DMD 14 and the motor 22, and a CPU that controls the CCD 16 via the CCD driver 42. A second control unit 43 is arranged. The first control unit 41 turns on the DMD 14 (reflects the light from the light source lamp 10 in the direction of the lens 7) based on the rotation angle position information of the color wheel 20 detected by the sensor 29 and the optical signal to be projected. State) and an OFF state (a state in which an optical signal incident from the lens 7 is reflected in the direction of the CCD 16). The first control unit 41 and the second control unit 43 are examples of the “control unit” in the present invention.

  Further, the first control unit 41 determines which region of the color filter unit 23 of the color wheel 20 emits light from the light source lamp 10 according to the elapsed time after the sensor 29 detects the light absorption unit 27 a of the wheel unit 27 of the color wheel 20. It is configured to determine whether it is located in the optical path. Thus, the first control unit 41 determines a period in which the light shielding region 23e is located in the light path in addition to the red region 23a, the blue region 23b, the green region 23c, and the white region 23d of the color filter unit 23. Is possible. The first control unit 41 is configured to control the flash memory 44 in which the firmware and the serial number of the projector 1 are stored. The flash memory 44 is an example of the “storage unit” in the present invention.

  Further, the second control unit 43 controls the CCD 16 via the CCD driver 42. In addition, the video imaged by the CCD 16 is subjected to image processing by the CCD driver 42 and then transmitted to the second control unit 43. In addition, when the transmission mode and the writing mode are selected, the second control unit 43 uses the RAM (Random Access Memory) to receive the optical signal received by the CCD 16 during the period in which the light shielding region 23e is located in the light path. 45 so as to control the recording. The RAM 45 is an example of the “storage unit” in the present invention.

  FIG. 8 is a diagram for explaining the state of the DMD when each region of the color filter is located in the optical path of light from the light source lamp. FIG. 9 is a diagram for explaining the firmware writing operation of the projector according to the embodiment of the present invention. FIGS. 10 to 14 are flowcharts for explaining the firmware writing operation of the projector according to the embodiment of the present invention. FIGS. 15 to 17 are diagrams for explaining the firmware writing operation of the projector according to the embodiment of the present invention. 18 to 20 are diagrams for explaining screens projected by the transmission-side projector during the firmware writing operation. Next, the operation of the projector 1 according to the present embodiment will be described with reference to FIGS. 3 and 4 and FIGS.

  First, an image projection operation by a normal projector 1 will be described. As shown in FIGS. 3 and 4, the color wheel 20 is rotated at a high speed (about 7200 rpm) by the motor 22 so that each region of the color filter unit 23 is an optical path of light 100 from the light source lamp 10 (see FIG. 6). Sequentially. Specifically, as shown in FIG. 8, the color regions of the color filter unit 23 (see FIG. 3) located in the optical path of light from the light source lamp 10 are a red region 23a, a blue region 23b, a green region 23c, and a white region. It changes by time division in the order of the area 23d and the light shielding area 23e. The time for which each color area is located in the optical path of the light 100 from the light source lamp 10 corresponds to the size (angle range) of each color area of the color filter unit 23 (see FIG. 3). By performing ON / OFF control of the DMD 14 based on the video signal of the image to be projected in synchronization with changes in the color areas of the red area 23a, blue area 23b, green area 23c, and white area 23d, each color is bright. Controls the tone (gradation). This makes it possible to project a color image corresponding to the image signal on the screen.

  Further, as shown in FIG. 8, the color regions (red region 23a, blue region 23b, green region 23c, and white region 23d) excluding the light shielding region 23e (see FIG. 3) are light from the light source lamp 10 (see FIG. 6). When the first control unit 41 determines that the optical path is located in the optical path 100, the DMD 14 is controlled to be in an ON state in accordance with the video signal. When it is determined that the vicinity of the boundary region between the predetermined color region and the next color region is located in the optical path of the light 100 from the light source lamp 10, the DMD 14 is in the OFF state for a certain time. In FIG. 8, for convenience of explanation, the DMD 14 is shown to be in the ON state in all periods other than the boundary areas of the red area 23a, the blue area 23b, the green area 23c, and the white area 23d. The brightness of each color is controlled by adjusting the ratio of the period in which the DMD 14 is turned on and the period in which the DMD 14 is turned off according to the video signal (brightness gradation) of each color.

  Further, as shown in FIG. 8, when shifting from the white area 23d to the light-shielding area 23e (see FIG. 3), the DMD 14 (see FIG. 7) is controlled to be in the OFF state and shifts to the light-shielding area 23e. Even after the determination is made, the OFF state is maintained. Then, after shifting to the red region 23a, when it is determined that a certain time has passed and the boundary region between the light shielding region 23e and the red region 23a is passed, the DMD 14 (see FIG. 7) is turned on. Be controlled.

  Next, the firmware transmission operation and writing operation of the projector 1 will be described. In this embodiment, as shown in FIG. 9, a transmitting projector (hereinafter referred to as “transmitting projector”) 1 a that transmits firmware transmits the firmware, and the firmware writing projector (hereinafter referred to as “writing projector”). This will be described using an example in which 1b, 1c, and 1d receive and perform a write operation. Further, the writing side projector 1b has a serial number. 300, and the writing side projector 1c is serial No. 400, and the writing side projector 1d has a serial No. 500.

  First, as shown in FIG. 10, in the transmitting projector 1a, in step S1, whether or not the menu button 8a is pressed by the user is determined by the first control unit 41, and this determination is made until it is determined that the user has pressed the menu button 8a. Is repeated. When it is determined that the menu button 8a has been pressed, the process proceeds to step S2, and the first control unit 41 projects the menu screen as shown in FIG. 18 by controlling the DMD 14.

  Then, the process proceeds to step S3, and as shown in FIG. 10 and FIG. 15, it is determined by the user whether or not the transmission mode has been selected from the items displayed on the menu screen (see FIG. 16). This determination is repeated until it is determined that a mode has been selected. If it is determined that the transmission mode is selected, the process proceeds to step S4, and the DMD 14 is controlled by the first control unit 41, thereby inputting the number of writing side projectors as shown in FIG. Project the number of input screen.

  Then, the process proceeds to step S5, in which whether or not the number of writing side projectors has been input by the user operating the operation button 8 on the projection screen displayed on the writing number input screen (see FIG. 19). This determination is repeated until it is determined that the number has been input. When the number of write side projectors (three) is input, the color wheel rotation stop process in step S50 is performed.

  As shown in FIG. 11, the details of the color wheel rotation process are determined by the first control unit 41 as to whether or not the sensor 29 has detected the light absorption unit 27 a of the wheel unit 27 of the color wheel 20 in step S <b> 51. This determination is repeated until the sensor 29 detects the light absorption part 27a. When it is determined that the sensor 29 has detected the light absorption unit 27a, the process proceeds to step S52, and whether or not the first time has elapsed since the sensor 29 detected the light absorption unit 27a is determined. This determination is repeated until the first time has elapsed. In step S <b> 51, the first control unit 41 determines whether or not the light shielding region 23 e of the color filter unit 23 is located in the optical path of the light from the light source lamp 10. When the first control unit 41 determines that the first time has elapsed since the sensor 29 detected the light absorption unit 27a, the process proceeds to step S53, where the first control unit 41 causes the motor 22 to By stopping, rotation of the color wheel 20 is stopped. As a result, the color wheel 20 is stopped while the light shielding region 23e of the color filter unit 23 is positioned in the optical path of the light from the light source lamp 10, so that the light from the light source lamp 10 does not reach the DMD 14. Can be maintained. In this way, the color wheel stop process is performed. As a result, the rotation of the color wheel 20 stops, so that the light shielding region 23e remains in the light path. As a result, it is possible to prevent the light 100 from the light source lamp 10 from reaching the DMD 14.

  On the other hand, in the writing side projectors 1b, 1c, and 1d, as shown in FIGS. 10 and 15, in step S21, the first control unit 41 determines whether or not the writing mode button 8b has been pressed. This determination is repeated until 8b is pressed. If it is determined that the write mode button 8b (see FIG. 1) has been pressed, the process proceeds to step S22, and the first control unit 41 turns on or blinks a color indicating the write operation on the display unit 9.

  Then, the process proceeds to step S23, the serial number stored in the flash memory 44 is copied to the RAM 45, and the process proceeds to step S24. In step S24, an optical signal obtained by converting the serial number into a digital signal is projected (transmitted) on the transmission-side projector 1a, and then the process proceeds to step S50. In step S50, the writing side projectors 1b, 1c, and 1d perform the same color wheel rotation stop process as in step S50 of the transmission side projector 1a. Thereafter, the process proceeds to step S25.

  On the other hand, as shown in FIGS. 10 and 15, on the transmitting projector 1a side, whether or not the serial numbers for the three writing projectors 1b, 1c and 1d transmitted in step S23 have been received in step S6. Is determined by the second control unit 43, and this determination is repeated until it is determined that it has been received. If it is determined that three serial numbers have been received, the process proceeds to step S7, and the received three serial numbers are stored in the RAM 45. And it transfers to step S8 and starts rotation of the color wheel 20 again. Thereafter, the process proceeds to step S9, where the DMD 14 is controlled by the first control unit 41, so that the firmware (write data) for writing to the write side projectors 1b, 1c and 1d is converted into a digital signal. Is projected. Specifically, when all the elements of the DMD 14 are controlled to be in the OFF state, the light 100 from the light source lamp 10 (see FIG. 6) is not reflected in the direction of the lens 7. This is all black. When all the elements of the DMD 14 are controlled to be in the ON state, the light 100 from the light source lamp 10 is reflected in the direction of the lens 7 in the brightest state. This is all white. By projecting this all black (for example, “0” data) and all white (for example, “1” data) in combination, it becomes possible to transmit an optical signal converted into a digital signal.

  And it transfers to step S50 and the color wheel rotation stop process mentioned above is performed again. Then, the process proceeds to step S10, where the first control unit 41 determines whether or not the second time has elapsed since the firmware was projected, and this determination is performed until it is determined that the second time has elapsed. Is repeated. If it is determined that the second time has elapsed since the firmware was projected, the process proceeds to a write confirmation process for the first writing side projector 1b of the transmitting side projector 1a in step S11.

  On the other hand, on the writing side projectors 1b, 1c and 1d, as shown in FIGS. 10 and 15, it is determined in step S25 whether or not the firmware (writing data) projected from the transmitting side projector 1a in step S9 has been received. This determination is repeated until it is determined by the second control unit 43 and it is determined that the firmware has been received. If it is determined that the firmware projected by the transmitting projector 1a has been received, the process proceeds to step S26.

  In step S26, the second control unit 43 performs a write operation of overwriting the received firmware on the flash memory 44 via the first control unit 41, and the process proceeds to step S27. In step S27, the first control unit 41 determines whether or not the write operation has been completed normally. If it is determined that the write operation has not been completed normally, the operation is terminated. If it is determined that the writing operation has been normally completed, the process proceeds to the writing confirmation process of the writing projector in step S28.

  Here, the details of the writing confirmation process of the transmission side projector 1a and the writing confirmation process of the first writing side projector 1b will be described with reference to FIG. First, as shown in FIG. 12, the transmission-side projector 1a restarts the rotation of the color wheel 20 in step S11a. Then, the DMD 14 is controlled by the first control unit 41, whereby the serial number of the writing side projector 1b which is the first writing side projector is set. 300 is projected as an optical signal (all black and all white) subjected to digitization.

  In writing projector 1b, in step S28a, whether or not the serial number from transmitting projector 1a transmitted in step S11b has been received is determined by second control unit 43 until it is determined that the serial number has been received. This determination is repeated. If it is determined that the serial number from the transmitting projector 1a has been received, the process proceeds to step S28b, where the second control unit 43 stores the serial number of the own device (writing projector 1b) stored in the RAM 45. It is determined whether or not it matches the number. If it is determined that they do not match, the process returns to step S28a, and the standby state is maintained until the serial number is received. For this reason, as shown in FIGS. 15 and 16, the writing side projector 1c and the writing side projector 1d maintain the standby state until it is determined that the received serial number matches the serial number of the own device. When it is determined that the received serial number matches the serial number stored in the RAM 45, the process proceeds to step S28c. Then, the rotation of the color wheel 20 is resumed, and in step S28d, the serial number corresponding to the transmission-side projector 1b. 300 is projected as a digital signal optical signal (all black and all white).

  In step S11c, in the transmission-side projector 1a, the second control unit 43 determines whether or not the serial number of the writing-side projector 1b transmitted in step S28d has been received. If it is determined that the serial number has been received, the process proceeds to step S11d, where the second control unit 43 collates with the serial number (serial No. 300) transmitted in step S11b. If it is determined in step S11c that the serial number has not been received, the process proceeds to step S11e.

  On the other hand, in writing side projector 1b, in step S28e, it is determined whether or not a predetermined time has elapsed since the transmission of the serial number in step S28d, and this determination is repeated until it is determined that it has elapsed. If it is determined that a predetermined time has elapsed since the transmission of the serial number, the process proceeds to step S28f, where the serial number is assigned to the transmitting projector 1a. 300 is projected, and the process proceeds to step S28g.

  On the other hand, in the transmission side projector 1a, the second control unit 43 determines whether or not the serial number of the writing side projector 1b transmitted in step S28e on the writing side projector 1b side is received in step S11e. To be judged. If it is determined that the serial number has been received, the process proceeds to step S11f, and the second control unit 43 checks the serial number (serial No. 300) transmitted in step S11b for the second time. If it is determined in step S11e that the second serial number has not been received, the process proceeds to step S11g.

  Then, in writing projector 1b, in step S28g, it is determined whether or not a predetermined time has elapsed from the transmission of the serial number in step S28f, and this determination is repeated until it is determined that it has elapsed. If it is determined that a predetermined time has elapsed since the transmission of the serial number, the process proceeds to step S28h, and the third serial number is transmitted to the transmitting projector 1a. 300 is projected, and the process ends.

  On the other hand, in the transmitting projector 1a, the second control unit 43 determines whether or not the serial number of the writing projector 1b transmitted in step S28h is received for the third time on the writing projector 1b side in step S11g. To be judged. If it is determined that the serial number has been received, the process proceeds to step S11h, where the second control unit 43 checks the serial number (serial No. 300) transmitted in step S11b for the third time. If it is determined in step S11g that the third serial number has not been received, the process proceeds to step S11i.

  In step S11i, the second control unit 43 determines whether at least one of the three serial number verification results in steps S11d, S11f, and S11h matches. When it is determined that they match, the writing result of the writing side projector 1b is stored in the RAM 45 as data indicating success. In addition, when it is determined that there is no coincidence, or when it is determined that the serial number has not been received once, the writing result is determined as failure, and the first writing on the transmitting projector side is performed. The write confirmation process for the side projector 1b (step S11 in FIG. 10) ends, and the process proceeds to the write confirmation process for the second writing side projector 1c on the transmission projector side in step S12 in FIG. 10 (see FIG. 16).

  The write confirmation process for the second writing projector 1c in step S12 is the same as the write confirmation process for the first writing projector 1b shown in FIG. 400 is a point which performs transmission / reception processing. That is, steps S12a to 12h of the transmission side projector 1a in FIG. 13 are the same processes as steps S11a to 11h in FIG. 12, respectively, and steps S28a to 28h of the second writing side projector 1c are 1 in FIG. This is the same processing as Steps S28a to 28h of the second writing side projector 1b.

  In step S12i, the second control unit 43 determines whether at least one of the three serial number verification results in steps S12d, S12f, and S12h matches. When it is determined that they match, the RAM 45 stores data indicating that the writing result of the second writing side projector 1c is successful. Also, if it is determined that it has never been matched, or if it has been determined that the serial number has never been received, the writing result is determined to have failed, and the second writing side projector on the transmitting projector side The writing confirmation process for 1c (step S12 in FIG. 10) is terminated, and the process proceeds to the writing confirmation process for the third writing-side projector 1d on the transmitting projector side in step S13 in FIG.

  The write confirmation process for the second writing projector 1d in step S13 is the same as the write confirmation process for the first writing projector 1b shown in FIG. The transmission / reception processing for 500 is performed. That is, steps S13a to 13h of the transmitting projector 1a in FIG. 12 are the same processes as steps S11a to 11h in FIG. 12, respectively, and steps S28a to 28h of the third writing projector 1d are 1 in FIG. This is the same processing as Steps S28a to 28h of the second writing side projector 1b.

  In step S13i, the second control unit 43 determines whether at least one of the three serial number verification results in steps S13d, S13f, and S13h matches. When it is determined that they match, the data indicating that the writing result of the third writing-side projector 1d is successful is stored in the RAM 45. Also, if it is determined that there is no coincidence, or if it is determined that no serial number has been received, the writing result is determined to be a failure, and the third writing side projector on the transmitting projector side The write confirmation process for 1d (step S13 in FIG. 10) is terminated, and the process proceeds to step S14.

  Then, in step S13 of FIG. 10, the transmission side projector 1a projects the screen showing the writing result of the writing side projectors 1b, 1c and 1d stored in step S11, step S12 and step S13 as shown in FIG. To do. FIG. 20 shows an example of a screen when writing is successful for the first writing projector 1b and the second writing projector 1c, but fails for the third writing projector 1d. After projecting the writing result, the process is terminated.

  In the present embodiment, as described above, the projection mechanism unit 50 capable of projecting the firmware as a digital signal as an optical signal (all black and all white), and the digital signal conversion corresponding to the firmware projected by the projection mechanism unit 50 By providing a CCD 16 for receiving the received optical signal and a flash memory 45 for storing an optical signal converted into a digital signal corresponding to the firmware received by the CCD 16, a projection mechanism unit of one projector 1 is provided. 50 is used to project the optical signal converted into a digital signal corresponding to the firmware toward the other projector 1 and to the optical signal converted into a digital signal corresponding to the projected firmware by the CCD 16 of the other projector 1. Is received and stored in the flash memory 44. Te, firmware can be transferred firmware in the projector 1 together without separately providing a device for transferring. Further, by using the projection mechanism unit 50 of one projector 1 to project the optical signal converted into a digital signal corresponding to the firmware onto the CCD 16 of the plurality of projectors 1, one projector 1 is It is possible to write firmware to a plurality of projectors 1 at the same time. Thereby, the operation | work at the time of writing firmware with respect to the some projector 1 can be simplified.

  In the present embodiment, as described above, the transmission mode for projecting the optical signal converted into the digital signal by the projection mechanism unit 50 and the optical signal converted into the digital signal projected by the projection mechanism unit 50 are received by the CCD 16. By selecting the writing mode to be selected, the user can easily select the writing mode by selecting the transmission mode in which the firmware is projected by the projection mechanism unit 50 and the writing mode in which the firmware is received by the CCD 16. Program data can be written to the projector 1 that has been used.

  In the present embodiment, as described above, the projection mechanism unit 50 reflects the light source lamp 10 and the light 100 from the light source lamp 10 into a digital signal, projects it as an optical signal to the outside, and transmits it from the outside. The optical signal 200 that has been converted into a digital signal by the firmware is configured so as to include the DMD 14 for reflecting in the direction of the CCD 16, so that the light 100 from the light source lamp 10 is converted into a digital signal by one DMD 14. The optical signal 200 can be projected to the outside as an optical signal, and the optical signal 200 transmitted from the outside and converted into a digital signal by the firmware can be reflected in the direction of the CCD 16. Accordingly, it is not necessary to separately provide a component for reflecting the optical signal transmitted from the outside and converted into a digital signal by the firmware in the direction of the CCD 16, so that an increase in the number of components can be suppressed.

  In the present embodiment, as described above, when the firmware receives the optical signal 200 converted into a digital signal, the color wheel for preventing the light from the light source lamp 10 of the projection mechanism unit 50 from reaching the DMD 14. 20 is further provided with a light shielding area 23e, so that when the firmware receives the optical signal 200 converted into a digital signal, the light 100 from the light source lamp 10 is shielded by the light shielding means 23e. Since the DMD 14 can be prevented from reaching, only the optical signal obtained by converting the firmware transmitted from the outside into a digital signal can be reflected by the DMD 14 so as not to reach the CCD 16. Thereby, the CCD 16 can receive accurate firmware.

  In the present embodiment, as described above, the projector 1a selects the transmission mode, and the projectors 1b, 1c, and 1d select the writing mode. In addition to projecting as a signal, the projectors 1b, 1c, and 1d can receive the optical signal transmitted from the projector 1a by the CCD 16, and therefore a device for transferring the firmware is separately provided when transferring the firmware. In addition, the firmware can be transferred between the projectors 1. Further, when the firmware writing is executed, the transmission side projector 1a is configured to select the transmission mode based on the projected menu screen and to press the writing mode button 8b of the writing side projectors 1b, 1c, and 1d. After the operation, the firmware writing operation is started, and then the writing operation is automatically completed, so that the user can select the transmission mode for the transmission side projector 1a and the writing side By the operation of pressing the write mode buttons of the projectors 1b, 1c, and 1d, a plurality of write operations are started, and thereafter there is no need to operate until the write operation is completed. Thereby, the operation | work at the time of writing firmware with respect to several projector can be simplified.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above embodiment, a CCD is shown as an example of the light receiving unit. However, the present invention is not limited to this, and the image sensor may be an image sensor having an infrared film attached to another image sensor such as a CMOS (Complementary Metal Oxide Semiconductor). Good.

  In the above embodiment, an example is shown in which the first control unit and the second control unit are provided as control units that control the operation of the projector. However, the present invention is not limited to this, and the apparatus main body is configured using one control unit. You may comprise so that it may control.

  In the above embodiment, the DMD is shown as an example of the light modulation element. However, the present invention is not limited to this, and a liquid crystal panel may be used instead of the DMD.

  In the above embodiment, the example in which the light shielding unit is configured by the light shielding region formed in the color filter of the color wheel is shown. However, the present invention is not limited thereto, and the light shielding unit is disposed between the light source lamp and the mirror. You may comprise by the light-shielding member provided separately from the color wheel.

1 is a perspective view showing an overall structure of a projector according to an embodiment of the present invention. It is a top view for demonstrating the internal structure of the projector by one Embodiment shown in FIG. It is a perspective view for demonstrating the structure of the color wheel of the projector by one Embodiment shown in FIG. It is a perspective view for demonstrating the structure of the color wheel of the projector by one Embodiment shown in FIG. It is sectional drawing for demonstrating the structure of the color wheel by one Embodiment shown in FIG. It is a figure for demonstrating the structure of the projector by one Embodiment shown in FIG. It is a block diagram for demonstrating the structure of the circuit part of the projector by one Embodiment shown in FIG. It is a figure for demonstrating the sequential change of the color filter of the color wheel of the projector by one Embodiment shown in FIG. 1, and the state change of DMD corresponding to the sequential change of a color filter. It is a figure for demonstrating the write-in operation | movement of the firmware of the projector by one Embodiment shown in FIG. 4 is a flowchart for explaining a writing operation of the projector according to the embodiment shown in FIG. 1. 4 is a flowchart for explaining a writing operation of the projector according to the embodiment shown in FIG. 1. 4 is a flowchart for explaining a writing operation of the projector according to the embodiment shown in FIG. 1. 4 is a flowchart for explaining a writing operation of the projector according to the embodiment shown in FIG. 1. 4 is a flowchart for explaining a writing operation of the projector according to the embodiment shown in FIG. 1. It is a figure for demonstrating the write-in operation | movement of the firmware of the projector by one Embodiment shown in FIG. It is a figure for demonstrating the write-in operation | movement of the firmware of the projector by one Embodiment shown in FIG. It is a figure for demonstrating the write-in operation | movement of the firmware of the projector by one Embodiment shown in FIG. It is the figure which showed the menu screen projected by the projector by one Embodiment shown in FIG. It is the figure which showed the writing number input screen projected by the projector by one Embodiment shown in FIG. It is the figure which showed the writing result screen projected by the projector by one Embodiment shown in FIG.

Explanation of symbols

1 projector 1a transmitting side projector (first projector)
1b, 1c, 1d Writing side projector (second projector, third projector)
10 Light source lamp 14 DMD (light modulation element)
16 CCD (light receiving unit)
23e light shielding area (light shielding means)
41 1st control part (control part)
43 2nd control part (control part)
44 Flash memory (storage unit)
45 RAM (storage unit)
50 Projection mechanism

Claims (5)

A projection mechanism capable of projecting program data as an optical signal converted into a digital signal;
A light receiving unit for receiving an optical signal converted into a digital signal corresponding to the program data projected from the projection mechanism unit;
A storage unit for storing the program data received by the light receiving unit;
A projector comprising: a control unit that controls the program data received by the light receiving unit to be stored in the storage unit.   The first mode for projecting the optical signal converted into a digital signal by the projection mechanism unit and the second mode for receiving the optical signal converted into a digital signal projected by the projection mechanism unit by the light receiving unit can be selected. The projector according to claim 1, wherein the projector is configured. The projection mechanism is
A light source lamp,
The light from the light source lamp is reflected and converted into a digital signal, which is projected to the outside as an optical signal. The optical signal transmitted from the outside and converted into a digital signal is reflected in the direction of the light receiving unit. The projector according to claim 1, further comprising: a light modulation element.   4. The apparatus according to claim 3, further comprising a light shielding unit configured to prevent light from a light source lamp of the projection mechanism unit from reaching the light modulation element when receiving an optical signal obtained by converting the program data into a digital signal. Projector. A projection mechanism capable of projecting program data as an optical signal converted into a digital signal;
A light receiving unit for receiving a digital signal corresponding to the program data transmitted from the projection mechanism unit;
A storage unit for storing the program data received by the light receiving unit;
A first projector and a second projector, including a control unit that controls the program data received by the light receiving unit to be stored in the storage unit,
The first projector converts the program data into a digital signal by the projection mechanism unit and projects it as an optical signal, and the second projector receives the optical signal obtained by converting the program data into a digital signal by the light receiving unit. A data transfer system using a projector configured to be stored in the storage unit.

Images