JP3405351B2 - Projector and control method thereof - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projector and
And its control method .

[0002]

2. Description of the Related Art FIG. 45 is a block diagram showing a configuration of an example of a projector that the present applicant has previously filed .
00 is a power supply on / off switch, and 501 is a power supply unit, which supplies power to the drive control circuit unit 505. Reference numeral 504 denotes a bimetal thermostat, which is connected between the power supply unit 501 and the projection light source lamp 503, and the inside of the liquid crystal video projector is sufficiently cooled by the cooling fan 502, but a certain temperature is reached such that the ventilation port is blocked. In this case, the bimetal thermostat 504 turns off the power supply to the projection light source lamp 503. A signal input terminal 506 is connected to the drive control circuit unit 505, and a liquid crystal light valve 507 is modulated and driven by the drive control circuit unit 505. By moving the projection lens 508 back and forth, the projection light modulated by the liquid crystal light valve 507 forms an image on the screen.

An example of such a projector is shown in, for example, Japanese Patent Application No. 63-133872.

[0004]

With the conventional projector
Is used when the projection light source is not lit
Hard to understand.

Therefore, the present invention solves such a problem, and its purpose is for the user.
Another object is to provide a projector that is easy to use.

[0006]

A projector according to the present invention comprises a replaceable projection light source, a storage means for storing information on whether the mounted projection light source is off, a power source, and a display means. In the case where the power source is turned on and the stored information indicates that the projection light source is not turned off, the projector is provided before the time point when the projection light source emits light. The display means does not perform the predetermined display when the display means performs the predetermined display, the power is turned on, and the stored information indicates that the projection light source is off. , Is characterized.

Further, the projector control method of the present invention includes the first step of storing information on whether or not the mounted projection light source is turned off, and the case where the power is turned on. If the stored information indicates that the projection light source is not cut off, the second step of performing a predetermined display before the time when the projection light source emits light, and the case where the power source is turned on include If the stored information indicates that the light source is off, the third step of not performing the predetermined display is included.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a functional block diagram showing the basic configuration of the present invention.

In FIG. 1, there is an input device 120 for inputting the operating state of a liquid crystal video projector (hereinafter referred to as LVP) and an input means 1, and 2 is a command for discriminating the operating state of the LVP based on the output from the input means 1. The power source control means 3, the input switching means 4, the image processing means 5, the audio processing means 6, and the lens control means 7 operate based on the command determined by the determination means. Reference numeral 210 denotes a non-lighting detector that detects the non-lighting of the projection light source. The non-lighting detection means 10 outputs the light of the non-lighting detector 210 to the power supply control means 3 after the preset time elapses. Outputs information about lighting / non-lighting. When the non-lighting detection means 10 detects the non-lighting of the projection light source when the power is turned on, the power is turned on again at a preset time interval up to a preset number of times. If the non-lighting detection means 10 detects non-lighting of the projection light source also by this operation, it is determined that the projection light source is out of order, and the information is stored in the storage device 2.
It is stored in 50 and displayed on the display device 130 through the display means 9. Reference numeral 211 denotes a temperature detector that detects the temperature inside the LVP, and the signal from the temperature detector 211 causes the temperature detection means 20 to output temperature information to the power supply control means 3 at preset time intervals. The fan motor controller 8 outputs a control signal to the fan motor controller 240 based on the temperature information from the temperature detector 20. Reference numeral 4 is an input switching means for switching the input source connected to the input switching device 230. Reference numeral 5 denotes a video processing means, which controls increase / decrease of image quality, for example, color tone, color depth, contrast, sharpness, brightness, etc., based on the output from the command discrimination means 2, and outputs image quality information to the D / A converter 270. To do. The image quality information controlled by the image processing means 5 is stored in the storage device 250 and reproduced when the power is turned on. Reference numeral 6 denotes a voice processing means, which controls increase / decrease in volume and the like based on the output from the command discrimination means 2 and outputs voice information to the D / A converter 270. The voice information controlled by the voice processing means 6 is stored in the storage device 250 and reproduced when the power is turned on. Reference numeral 7 denotes a lens control means, which outputs signals for lens control, such as autofocus, electric focus, electric zoom, and electric tilt, to the lens control device 260 based on the output from the command determination means 2. The operating state of each unit is displayed by the display unit 9 based on the outputs from the power source control unit 3, the input switching unit 4, the image processing unit 5, the audio processing unit 6, and the lens control unit 7. Display means 9
The display device 130 performs a display operation according to the output signal from the display device 130.

When the power supply control means 3 detects an abnormal operation, the alarm generation means 30 drives the alarm device 140 to issue an alarm.

Numeral 50 is a timer means for controlling the time in each means.

Reference numeral 221 denotes a light source power source control device, and 220
Are main power supply control devices, each of which is controlled by an output from the power supply control means 3.

The above-mentioned input means 1, command discrimination means 2, power supply control means 3, input switching means 4, video processing means 5, audio processing means 6, lens control means 7, non-lighting detection means 10,
The temperature detection unit 20, the fan motor control unit 8, the display control unit 9, and the alarm generation unit 30 constitute a control unit 100, and this control unit 100 can be configured using a microcomputer.

2 to 7 are block diagrams showing an embodiment in which the present invention is configured by using a microcomputer.

The microcomputer system constituting the control unit 100 includes a CPU 100a, a ROM 100b, and an R.
It is composed of an AM 100c, an I / O port 100d, and a timer mechanism 100e.

In FIG. 3, instruction switches S1 to S18 and D1 to D8 are connected to the I / O port 100d at I0 to I6 and O0 to O3. Power switch S1, mute switch S2, mode switch S3, volume decrease switch S4, volume increase switch S5, pattern switch S6, electric focus far switch S7, electric focus near switch S8, minus switch S9, plus switch S10, standard switch S11, Picture switch S1
2, electric zoom wide switch S13, electric zoom tele switch S14, auto focus switch S15, electric swing up switch S16, electric swing down switch S17, auto swing switch S18, on-screen switch D1, focus super switch D2, focus priority switch D3. , Focus AF switch D4, Option A switch D7, Option B
A switch D8, which constitutes a circuit related to the input ports I0 to I6 and the output ports O0 to O3 of the I / O port 100d, and scans at an L level from any one of the output ports O0 to O3. It is possible to confirm which switch has been pressed by taking in the signals output by the input ports I0 to I6. The capture process is an interrupt process. An infrared remote control light receiver (hereinafter referred to as a remote controller light receiver) 200 is connected to the input port I7, and a command signal from the remote controller is input. The command switches S1 to S18 and D1 to D8 and the remote control light receiver 200 form an input device 120.

In FIG. 4, when the H level is output from the output port O4, the transistor T1 constituting the light source power source control device 221 is turned on, the relay RL1 is energized, and the light source power source 301 is energized.

When the H level is output from the output port O5, the transistor T2 forming the main power supply controller 220 is formed.
Is turned on, the relay RL2 is energized, and the main power supply 300 is energized.

A signal from the temperature sensor TS1 which constitutes the temperature detector 211 and an A / D converter AD1 which converts the output signal thereof into a digital value is inputted to the input port I9. In FIG. 6, the display device 13 is connected to the output port O6.
When the temperature warning lamp LD1 and the transistor T3 forming 0 are connected and the H level is output from the output port O6, the transistor T3 is turned on and the temperature warning lamp L
D1 lights up. The display device 130 is connected to the output port O7.
Source life lamp LD2 and transistor T
4 is connected and the H level is output from the output port O7, the transistor T4 is turned on and the light source life lamp LD2
Lights up. The light source operation lamp LD3 that constitutes the display device 130 is provided at the output port O8 and the output port O9.
r, the light source operating lamp LD3g, the transistor T5 and the transistor T6 are connected. Light source operation lamp LD3
The r and the light source operation lamp LD3g emit red and green, respectively, and the two elements are negative. When the L level is output from the output port O8, the transistor T5 is turned on and the light source operation lamp LD3r is turned on. Output port O
When the L level is output from 9, the transistor T6 is turned on and the light source operation lamp LD3g is turned on. When the L level is simultaneously output from the output port O8 and the output port O9, the light source operation lamp LD3r and the light source operation lamp LD3g are turned on at the same time, so that the emission color is orange.

Output port O10 and output port O11
Includes a power source display lamp LD4 that constitutes the display device 130.
r, the power supply display lamp LD4g, the transistor T7 and the transistor T8 are connected. Power indicator lamp LD4
r and the power supply indicating lamp LD4g are equivalent to the light source operating lamp LD3r and the light source operating lamp LD3g, respectively, and the operation thereof is the same as the operation of the output port O8 and the output port O9 in the above. It is the same as the replaced one.
In FIG. 7, the output port O12 and the output port O13 are provided with a transistor T that constitutes the fan motor control device 240.
9, the transistor T10, the transistor T11, the Zener diode ZD1, and the three-terminal regulator SR1 are connected. The output port O12 outputs a signal for controlling the operation stop of the fan motor 245. When the H level is output from the output port O12, the transistors T9 and T10 are turned on and the fan motor 245 is energized. The output port O13 outputs a signal for controlling the rotation speed of the fan motor 245. When the output port O12 outputs the H level and the output port O13 outputs the L level, the transistor T11 is off, and the output voltage of the three-terminal regulator SR1 is the Zener diode ZD1.
Since a voltage as high as the Zener voltage is output, the fan motor 245 rotates at high speed and the air volume of the fan increases. When the output port O13 outputs H level, the transistor T11 is turned on.
Since the cathode of D1 becomes the ground potential and the Zener voltage becomes 0V, the output voltage of the three-terminal regulator SR1 becomes its original output voltage, and therefore the fan motor 245
Becomes a low speed rotation and the air volume of the fan becomes small, but the noise of the fan becomes small.

In FIG. 5, the input / output port I / O1 is a storage device 250, which is an electrically erasable write ROM (hereinafter, E <SUP
> 2 </ SUP> PROM (EEPROM ) 250 is connected. The storage device 250 needs to retain the storage even when the power is not supplied.

A D / A converter 270 is connected to the output port O14.

In FIG. 6, an on-screen display device (hereinafter referred to as OSD) 280 which constitutes the display device 130 is connected to the output port O15, and the information of the control unit 100 is projected on the projection screen by the OSD 280.

In FIG. 4, a non-lighting detector 210 for detecting non-lighting of the projection light source is connected to the input port I8.
The resistor R1 is a resistor for detecting the light source current, and the light source current is detected by the voltage across the resistor. OP1 is a voltage amplifier, and the amplified signal is converted into a digital value by the A / D converter AD2 and input to the input port I8.

In FIG. 5, the control signals of the lens controller 260 are output to the output ports O16 to O22. The sensor signals of the lens controller 260 are input to the input ports I11 to I14. The output port O16 is an auto focus on AFC signal, the output port O17 is an electric focus far side drive signal PFF signal, the output port O18 is an electric focus near side drive signal PFN signal, the output port O19 is an electric zoom wide side drive signal PZW signal, Output port O
An electric zoom telephoto drive signal PZT signal 19 is output. The output port O21 and the output port O22 output the electric swing-up signal PSU signal and the electric swing-down signal PSD signal. When the output port O21 is at H level, the screen moves up, and when the output port O21 is at H level, the screen moves down. The focus near side drive signal MN signal from the lens controller 260 is input to the human power port I11.
The focus-far-side drive signal MF signal is input from the lens control device 260 to the input port I12, and the lens center position signal SC signal of the lens control device 260 is input to the input port I13.

The output port O23 outputs a signal for switching the input source from the external input terminal or the internal option input terminal to the input switching device 230. The output port O24 outputs a signal for switching the video 1 input or the video 2 input to the input switching device 230 in selecting the input source. The output port O25 outputs a blue back on / off signal to the input switching device 230.

In FIG. 3, a signal for resetting the light source out flag stored in the storage device 250 when the light source is replaced is input to the input port I16.

In FIG. 2, the output port O26 outputs a signal to the alarm device 140 as an alarm output.

A control program and data used by the program are written in the ROM 100B.

The ROM 100C includes a work area for executing a control program and an E <SUP> 2 </ SUP> PROM (EEPR).
OM) Used as various flag areas composed of 250 data.

The timer mechanism 100e functions as a timer in the control program.

In FIG. 5, in the storage device 250, the operating state of the liquid crystal video projector such as the set value of the D / A converter 270 is stored in addition to the light source out flag.

Next, the control program in this case is shown in FIG.
This will be described with reference to the flowchart of FIG. 42 and FIGS. In the description of the flowcharts shown in FIGS. 8 to 42, P1, P2, ... Denote processing procedure (step) numbers.

FIG. 8 is a flow chart showing the outline of the processing procedure of this embodiment, showing the main processing.

When starting, first at P1, each port of the I / O port 100d is set to a standby state. Then P2
E <SUP> 2 </ SUP> in the constant area of RAM100c
The data in the PROM (EEPROM) 250 is read. This data is composed of the set value of the D / A converter 270, information on the light source out, etc., and is used in the subsequent processing procedure. Next, in P3, the states of the instruction switches D1 to D8 are read into the constant area of the RAM 100c (P10.
P25). Subsequent operations are determined by the level states of the instruction switches D1 to D8. For example, if the command switch D1 is at H level, the display on the OSD 280 is in Japanese, and if it is at L level, it is in English. According to the above processing procedure, the basic operation state of the control unit 100 is used as a flag in the RAM 1
It has been expanded to 00c. Next, at P4, the power supply indicator lamp LD4r indicating that the control unit 100 is in the standby state is turned on. In P5, the power supply command is input from the command switch or the remote control light receiving unit 200, and the process waits. When the power supply command is detected in P5, the power supply control process of P6 is started, and when the power is normally turned on, the command is input in P7, the command is determined in each process of P8, and each process procedure is started.

Next, power supply control will be described. 11,
12, FIG. 13 and FIG. 14, it is determined in P30 whether the power supply is on or off. If the power supply is off, the process is transferred to the power off control. When power is on, P1 RAM1
The light source out flag on 00c is inspected, and if the flag is on, the control goes to the light source out control of P33. If the flag is off, the power supply display lamp LD4g lights up at P34, and the power supply display lamp showing the operating state emits green light. At P35, the main power source 300 is turned on, and operations other than the light source start. Light source operation lamp LD3 showing that the light source is warming up
g starts blinking in green (P36). Fan motor 2
45 starts rotating at a low speed (P37), and the light source power supply control device 221 is turned on at P38 to start the operation of turning on the projection light source. After that, after the lapse of time at timer t1 (P39),
When the output of the non-lighting detector 210 is checked in P40 and the non-lighting of the projection light source is detected, the control is transferred to the relighting control (P41). When the projection light source is turned on, the OSD 28
The countdown display is performed for 60 seconds at 0, and the process waits until the projection light source emits a prescribed amount of light (P42). During this period, the contents of the RAM 100c such as video information, that is, color tone, color depth, and audio information, that is, sound difference are output to the D / A converter 270 by P43 (P43). P43
When the processing of step 3 is completed, the instruction switch D3 is output at P44.
If D4 and H4 are at the H level, the autofocus process of P45 is performed from the mode in which autofocus is performed when the power is turned on (FIG. 10, P20). Then P46
The current input source is displayed at, and the light source operating lamp LD3g indicating that the projection light source is normally turned on at P47.
Lights up in green. After that, by the interrupt processing of P55, P
When the output of the temperature detector 211 detects that the LVP internal temperature becomes θ1 or more at 48, the high temperature control of P49 is performed, and the output of the non-lighting detector 210 detects that the projection light source goes off at P50. The control shifts to the light source cut-off control of P51, and to the power-off process of P31 when no video signal is input for a certain time (tl) while the LVP is operating. In addition, the instruction determination in P54 is performed by the instruction input in P53, and the control shifts to each process.

FIG. 15 is a flowchart showing the power-off control. Power switch S1 or remote control light receiver 2
When a power off command is input from 00, RA at P60
E <SUP> 2 </ SUP> PROM for flag contents in M100c
(EEPROM) Write to 250, P61 light source power supply 3
01, the main power source 300 is turned off at P62. The fan motor 245 rotates at high speed (P63), and the air volume increases. The power supply display lamp LD4r is turned on and is turned on in red indicating a standby state (P64). The light source operation lamp LD3 blinks orange to indicate that the light source is cooling down (P65).
When the output of the temperature detector 211 detects that the LVP internal temperature has become less than θ0 in P66, the fan motor 245 is stopped (P67), the light source operation lamp LO3 is turned off (P68), and the standby state is set. .

FIG. 16 is a flowchart showing the light source out control. When the extinction of the projection light source is detected by the output of the non-lighting detector 210, an alarm is output from the output port O26 in P70, and the light source power supply 301 is switched to P72 in P71.
The main power supply 300 is turned off, and the power supply display lamp LD
4 is turned on in red (indicating a standby state) (P73), and the light source operation lamp LD3 is turned on in red (indicating stop of light source operation).
Then (P74), the light source life lamp LD2 lights up (P74).
75), indicating that the light source has failed. After this RAM
Set the light source out flag in 100c (P76), and
E <SUP> 2 </ SUP> PR contents of flags in AM100c
Write to OM (EEPROM) 250 (P77), P7
After the timer t2 expires in 8, the rotation of the fan motor 245 is stopped in P79, and the output port O26 is output in P80.
Stop the alarm during output. The light source out flag is reset by turning on the switch RS1 and inputting an L level to the input port I16.

17 and 18 are flowcharts showing the relighting control. Non-lighting detector 21 at power-on
When the non-lighting of the projection light source is detected by the output of 0, the relighting operation is repeated a certain number of times (CO times). If the lighting is not possible within the certain number of times, the light source is cut off and the processing is performed.
The counter is cleared at P90, and the light source power supply 301 at P91.
Is turned off, the light source operation lamp LD3 blinks in red, and the light source life lamp LD2 also blinks to indicate that the relighting control is being performed. Wait for the timer t3 to time out at P94, and perform the lighting operation again (P95 to P96).
If it is confirmed that the lamp is turned on, the light source operation lamp LD3 is blinked in green (P101), the light source life lamp LD2 is turned off (P102), and the control is returned to the normal operation. When non-lighting is detected in P97, the light source power supply 301 is turned off (P9
8) Then, the counter is incremented by 1 (P99) and the relighting operation is repeated up to CO times (P94 to P100). In P100, the relighting operation is performed up to CO times, and when the light is not lit, the process shifts to the light source out control, and it is displayed that the light source has reached the end of its life.

19 and 20 are flowcharts showing the control at high temperature. Temperature detector 211 during normal operation
When the LVP internal temperature becomes θ1 or more in the output of, the temperature warning lamp LD1 is blinked at P110 to display that the temperature becomes high. Fan motor 24 with P111
5 is rotated at high speed. At P112, the LVP internal temperature is θ1
This state continues until it becomes less than. LVP internal temperature is θ
When it is less than 1, the temperature warning lamp LD1 is turned off, the fan motor 245 is rotated at a low speed, and the control is returned to the normal operation (P122 to P123). However, if the LVP internal temperature continues to rise and exceeds θ2, the flag contents in the RAM 100c are changed to E <SUP> 2 </ SUP> PROM ( EEPRO
M) Write in 250 (P114) Turn off all power supplies (P115 to P116), power supply display lamp LD4 lights in red (standby state), and light source operation lamp LD3 displays red blinking (abnormal state) (P117 to P118). , P11
At 9, the LVP internal temperature is cooled to less than θ0, and P1
The rotation of the fan motor 245 is stopped at 20, and the temperature warning lamp LD1 and the light source operation lamp LD3 are turned off (P1
21) The standby state is entered.

FIG. 21 is a flowchart showing the input source display on the OSD when the power is turned on. First, OS on P130
Display all input sources on screen with D. In this embodiment,
Video 1, video 2 and options are displayed, but options 1 to 3 (P22 to P25) are displayed depending on the states of option switches D7 and D8. However, if there is no option, the option is not displayed. After that, the timer t5 time is up (P131)
After that, the selected input source is displayed (P132), and after the timer t6 is timed up (P133), the display on the OSD is erased (P134).

FIG. 22 is a flow chart of control for switching the input mode when there is a mode switching command input from the mode switch S3 or the remote control light receiving unit 200. When an instruction is input, the input source next to the input source currently selected is set in the flag of the RAM 100c (P14).
0), OSD at P141, RAM1 at P140
The input source name set in 00c is displayed. Subsequently, the output ports O23 and O24 output the selection signal of the selected input source to the input switching device 230 (P14).
2). After the time of timer t7 is up (P143), O
The SD display is erased (P144). The input sources are in the order shown in FIG. 43 (video 1 → video 2 → options →
...) every time a mode selection command is input.

FIG. 23 is a flowchart showing the autofocus process. Autofocus switch S1
5 or when an autofocus command is input from the remote control light receiving unit 200, the OSD displays a message indicating that the autofocus operation is in progress (P150). Next, at P151, the AFC signal is turned on. Both the MN signal and the MF signal are H in P152
When the level is reached, the focus is in focus (P1
52), at P153, the OSD display is changed to the auto-focus in-focus display, the AFC signal is turned off (P154), and after the timer t8 is up (P155), the OSD display is erased (P156). Turn on the AFC signal at P151,
When there is an input from the remote control receiver 200 during the autofocus operation (P161), the AFC signal is turned off (P162) and the control waits until the remote control signal is not input (P163), and the AFC signal is turned on again (P164).
Continue auto focus operation. Note that P161 to P1
64 is processed by interrupt processing (P160). When the command switches D3 and D4 are at the H level and the L level respectively (P18, P21) and the automatic focus is always activated, the interrupt process of P160 is performed to reduce the influence of the remote control signal light on the automatic focus operation of the lens. I am letting you.

In FIG. 24, when the pattern command is input from the pattern switch S6 or the remote control light receiving unit 200, the pattern used as a standard for focusing is OSD.
Is displayed / erased on the screen. If the pattern is not being displayed at P170 and the command switch D2 is at the L level (P15) at P171, the blue back signal is turned on from the output port O25 (P172), and at P173 the O
The pattern is displayed by SD. When the pattern is currently displayed in P170, the blue backoff process is performed in P174 and P175, and the pattern display in the OSD is erased in P176.

FIG. 25 shows an electric focus fur (far).
It is a flowchart which shows a side process. Command switch S7
Alternatively, when an electric focus fur command is input from the remote control light receiving unit 200, the PFF signal (output port O17) is turned on while the command is input (P
180-P182). As a result, the lens is focused at the far point.

FIG. 26 is a flowchart showing the near (near) side processing of the electric focus. While the electric focus near command is input from the command switch S8 or the remote control light receiving unit 200, the PFN signal (output port O1) is input.
8) is turned on (P185-P187). As a result, the lens is focused at a near point.

FIG. 27 is a flow chart showing the wide side processing of the electric zoom. While the electric zoom wide command is being input from the command switch S13 or the remote control light receiving unit 200, the PZW signal (output port O1
9) is turned on (P190 to P192). This enlarges the size of the projection screen.

FIG. 28 is a flow chart showing the tele (far) side processing of the electric zoom. While the electric zoom tele command is being input from the command switch S14 or the remote control light receiving unit 200, the PWT signal (output port O20)
Is turned on (P195 to P197). This reduces the size of the projection screen.

FIG. 29 is a flow chart showing the processing for raising the electric swing, and the projection screen is raised upward by this processing. While the electric swing-up command is being input from the command switch S16 or the remote control light receiving unit 200, the PSU signal (output port O21) is turned on (P200 to P202).

FIG. 30 is a flow chart showing the down-side processing of the electric swing, and the projection screen is moved downward by this processing. While the electric swing-down command is being input from the command switch S17 or the remote control light receiving unit 200, the PSD signal (output port O22) is turned on (P205 to P207).

FIG. 31 is a flowchart showing the automatic swing process. It is a function to automatically return the screen with the electric swing-up command or the down command described above to a state without a tilt. When an automatic swing command is input from the command switch S18 or the remote control light receiving unit 200, the level of the lens center position signal SC (input port I13) at P210 causes the upper tilting state if SC is at the H level. , The above-mentioned PSD signal is turned on until SC becomes L level (P211-P
213). If SC is at L level, it is in a downward tilting state, so until SC goes to H level, the above P
The SU signal is turned on (P214 to P216).

FIG. 32 is a flow chart showing a picture process for selecting an adjustment item at the time of image quality adjustment. When a picture command is input from the command switch S12 or the remote control light receiving unit 200, the current R
The picture mode stored by the flag in the AM 100c and the image quality D / A value thereof are displayed on the screen by the OSD. After the time is up at timer t9 (P221), if there is no command input for any of the picture command, the plus command (described later) or the minus command (described later) (P222)
Deletes the information being displayed by OSD in P225.
By the time the timer t9 of P221 expires, P
If any of the above three commands is input at 222, P
At 223, it is determined whether or not this is a picture instruction, and if it is not a picture instruction, at P226 it is determined whether it is a plus instruction or a minus instruction, and the processing moves to each (P227, P22
8). If it is a picture instruction in P223, the next picture mode is stored in a flag in the RAM 100c in P224, and the process is returned to P220. The picture mode is switched each time a picture command is input in the order shown in FIG. 44 (color tone → color depth → contrast → brightness → sharpness ...).

In this way, when the image quality adjustment-related command is not input for a fixed time (t9), this command ends.

FIG. 33 and FIG. 34 show the command switch S1 when the image quality adjustment mode is selected.
9 is a flowchart showing a process when 0 or a plus command is input from the remote control light receiving unit 200. P230
Reset the counter that counts the number of command inputs with. P
Picture mode RA currently selected and displayed in step 231
The image quality D / A value in M100c is increased by one step and output to the D / A converter 270. In P232, the image quality D / A value being displayed in OSD is updated. If the counter is 0, the counter is incremented by 1 after the timer t11 has elapsed, and if no picture command, plus command or minus command is input (P233, P235, P236, P23).
7), after the timer t12 expires at P240, P
The same command check is again performed at 240, and if there is no command input, the display on the OSD is erased at P243 and control is returned. If any of the above three instructions is input in P241, the counter is reset in P242 and P238 is set.
Transfer control to. If any of the above three instructions is input in P237, it is determined in P238 whether or not it is a picture instruction input. If it is a picture instruction, the next picture mode is stored in the flag in the RAM 100c, and the picture processing is controlled. Transfer. If the command input is a minus command (P
239), and shifts the control to the minus processing. If there is no command up to P239, since the plus command is input again, the same process is repeated from P231. The timer t10 of P234 determines the sampling time when the commands are continuously input. From the above, for example, t11 is 1 second and t10 is 0.3.
If t2 is set to 3 seconds and t2 is set to 3 seconds, if a plus command is input within 1 second, it becomes a step input, and if it exceeds 1 second, it is assumed that there are 3 times input per second, and continuous processing is performed. If there is no input for 3 seconds or more, the image quality adjustment mode ends.

FIG. 35 and FIG. 36 show the command switch S9 when the image quality adjustment mode is selected.
Alternatively, it is a flowchart showing a process when a minus command is input from the remote control light receiving unit 200. P250
A series of processes starting from is during the processing of the above-mentioned plus command (P230 to P244), P251, and the image quality D / A value is 1
The same processing is performed except that the procedure of outputting to the D / A converter 270 with step reduction and the procedure of determining whether or not a plus instruction is input in P259 are different. (P250-P
264). For example, the timer t14 of P255 is 1 second,
When the timer t13 of P254 is set to 0.3 seconds and the timer t15 of P260 is set to 3 seconds, if the input of the minus command is within 1 second, it will be a step input, and if it is more than 1 second, it will be about 3 per second. Continuous processing is performed assuming that there is batch input, and if there is no input for 3 seconds or more, the image quality adjustment mode ends.

FIG. 37 is a flowchart showing the processing for setting the image quality D / A value in the RAM 100c in all the picture modes of the image quality adjustment mode to the standard value.
When a standard command is input from the command switch S11 or the remote control light-receiving unit 200, the OSD displays that the standard value of the screen is displayed in P270, and the image quality D / A values in the RAM 100c of all picture modes are set to the standard value in P271. Set. The standard value is stored in the ROM 100b in advance. The D / A values of all the picture modes set here are output to the D / A converter 270 (P
272). After the time of the Quimer t16 is up, the display of the OSD is erased (P273, P274).

38 and 39 are flowcharts showing the process of increasing the volume by adjusting the volume. Command switch S5
Alternatively, when a volume increase command is input from the remote control light receiving unit 200, the counter for counting the number of command inputs is reset in P2800. Volume D in RAM100c at P281
/ Increase the A value by one step. Volume D / A increased in P282
The value is output to the D / A converter 270, and at P238, O
SD outputs the current volume to the screen. If the command input is the first time in P284, the counter is incremented by one step after the timer t18 expires in P286 (P287), and P
At 288, it is determined whether a volume increase or volume decrease command is input, and the input is made after the timer t19 counts up (P
290), the display of the OSD is erased (P291, P293). If one of the above two instructions is input in P291, the counter is reset again in P292, and the process is returned to P289. If there is an input of either of the aforementioned two commands in P288, if it is not the volume increasing command in P289, the control is shifted to the volume decreasing process (described later). If it is the volume increase command in P289, the process returns from P281 and the timer t17 is timed up (P28
Every time 5), the volume D / A value is increased by one step while the volume increase command is continuously input. For example,
If the timer t18 of P286 is set to 1 second, the timer t17 of P285 is set to 0.3 seconds, and the timer t19 of P290 is set to 3 seconds, if the volume increase command is input within 1 second, it will be a step input and it will exceed 1 second. If it is an input, the continuous processing is performed assuming that there are three inputs per second, and if there is no volume increase or volume decrease command input for 3 seconds or more, the volume adjustment ends.

FIG. 40 and FIG. 41 are flowcharts showing the processing of volume reduction by volume adjustment. Command switch S4
Alternatively, when a volume down command is input from the remote control light receiving unit 200, a series of processes starting from P300 is in the process of the volume up command (P280 to P239), and a procedure of increasing the volume D / A value of P301 by one step and , P309, the procedure is the same except that the procedure for determining whether the volume reduction command is input is different (P300 to P313). Also in this case, for example, the timer t21 of P306 is set to 1 second and P305
Timer t20 of 0.3 seconds, P310 timer t2
When 2 is set to 3 seconds respectively, if the volume down command is input within 1 second, it becomes step input, and if it exceeds 1 second, it is assumed that there are 3 times input per second, and continuous processing is performed. If there is no volume decrease or volume increase command input for 3 seconds or more, the volume adjustment ends.

FIG. 42 is a flow chart showing the process of muting by adjusting the volume. When a mute command is input from the command switch S2 or the remote control light receiving unit 200, P32
If it is 0, it is judged whether it is already muted or not. If it is not muted, D
The minimum volume value is output to the A / A converter 270, and the OSD
The screen is muted with the display (P321, P32
2) If the sound is muted at P320, the D / A converter 27
The original volume D / A value of 0 is output, and the display of the OSD being muted is erased.

[0061]

According to the present invention, for the user,
Easy-to-use projector to get the control method
it can.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing a basic configuration of the present invention.

FIG. 2 is a block diagram showing an embodiment when the invention is configured using a microcomputer.

FIG. 3 is a block diagram showing an embodiment when the invention is configured using a microcomputer.

FIG. 4 is a block diagram showing an embodiment when the invention is configured using a microcomputer.

FIG. 5 is a block diagram showing an embodiment when the invention is configured by using a microcomputer.

FIG. 6 is a block diagram showing an embodiment when the invention is configured using a microcomputer.

FIG. 7 is a block diagram showing an embodiment when the invention is configured using a microcomputer.

FIG. 8 is a flowchart illustrating a control operation of the present invention.

FIG. 9 is a flowchart illustrating a control operation of the present invention.

FIG. 10 is a flowchart illustrating a control operation of the present invention.

FIG. 11 is a flowchart illustrating a control operation of the present invention.

FIG. 12 is a flowchart illustrating a control operation of the present invention.

FIG. 13 is a flowchart illustrating a control operation of the present invention.

FIG. 14 is a flowchart illustrating a control operation of the present invention.

FIG. 15 is a flowchart illustrating a control operation of the present invention.

FIG. 16 is a flowchart illustrating a control operation of the present invention.

FIG. 17 is a flowchart illustrating a control operation of the present invention.

FIG. 18 is a flowchart illustrating a control operation of the present invention.

FIG. 19 is a flowchart illustrating a control operation of the present invention.

FIG. 20 is a flowchart illustrating a control operation of the present invention.

FIG. 21 is a flowchart illustrating a control operation of the present invention.

FIG. 22 is a flowchart illustrating a control operation of the present invention.

FIG. 23 is a flowchart illustrating a control operation of the present invention.

FIG. 24 is a flowchart illustrating a control operation of the present invention.

FIG. 25 is a flowchart illustrating a control operation of the present invention.

FIG. 26 is a flowchart illustrating a control operation of the present invention.

FIG. 27 is a flowchart illustrating a control operation of the present invention.

FIG. 28 is a flowchart illustrating a control operation of the present invention.

FIG. 29 is a flowchart illustrating a control operation of the present invention.

FIG. 30 is a flowchart illustrating a control operation of the present invention.

FIG. 31 is a flowchart illustrating a control operation of the present invention.

FIG. 32 is a flowchart illustrating a control operation of the present invention.

FIG. 33 is a flowchart illustrating a control operation of the present invention.

FIG. 34 is a flowchart illustrating a control operation of the present invention.

FIG. 35 is a flowchart illustrating a control operation of the present invention.

FIG. 36 is a flowchart illustrating a control operation of the present invention.

FIG. 37 is a flowchart illustrating a control operation of the present invention.

FIG. 38 is a flowchart illustrating a control operation of the present invention.

FIG. 39 is a flowchart illustrating a control operation of the present invention.

FIG. 40 is a flowchart illustrating a control operation of the present invention.

FIG. 41 is a flowchart illustrating a control operation of the present invention.

FIG. 42 is a flowchart illustrating a control operation of the present invention.

FIG. 43 is a diagram showing the order of input source examples that are switched by a mode selection command of the present invention.

FIG. 44 is a diagram showing the order of adjustment item examples at the time of image quality adjustment that is switched by a picture command of the present invention.

FIG. 45 is a block diagram showing a configuration of a conventional example.

[Explanation of symbols]

1 ... Input means 2 ... Instruction discrimination means 3 ... Power control means 4 ... Input switching means 5 ... Image processing means 6 ... Voice processing means 7 ... Lens control means 8: Fan motor control means 9 ... Display means 10 ... Non-lighting detection means 20 ... Temperature detecting means 30 ... Alarm generating means 50 ... Timer means 100 ... Control section 120 ... Input device 130 ... Display device 140 ... Alarm device 210 ... Non-lighting detector 211 ... Temperature detector 220 ... Main power supply control device 221 ... Light source power supply control device 230 ... Input switching device 240 ... Fan motor control device 245 ... Fan motor 250 ... Storage device 260 ... Lens control device 270 ... D / A converter

Claims (2)

(57) [Claims] 1. A projector comprising a replaceable projection light source, a storage means for storing information on whether or not the mounted projection light source is off, a power supply, and a display means, wherein: When the power is turned on and the stored information indicates that the projection light source is not turned off,
When the display unit performs a predetermined display before the time when the projection light source emits light, the power is turned on, and the stored information indicates that the projection light source is off, A projector characterized in that the display means does not perform the predetermined display. 2. A method of controlling a projector, comprising: a first step of storing information on whether or not a mounted projection light source is turned off; When the stored information indicates that the projection light source is not cut off, a second step of performing a predetermined display before the time when the projection light source emits light, and a case where the power source is turned on include the projection light source. A step of not displaying the predetermined display when the stored information indicates that the
A method for controlling a projector, comprising: