JPH06178336A - Maintenance information processor - Google Patents

Abstract

PURPOSE:To improve the maintainability of a combined projection type display device. CONSTITUTION:An nXm surface multivision 1 is connected with a personal computer as a host computer 8, the luminance of a projection unit is detected and calculated, an the luminance and the life are displayed on a display 10 by an interactive language. A projection unit for exchange is provided within the nXm surface multivision 1. Therefore, the deterioration of the luminance of the nXm surface multivision and the life can be recognized by a user, the continuous working can be performed because the projection unit for exchange is provided and a working rate and maintenance performance can be improved remarkably.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is constructed by connecting a large-sized projection display device or a combination projection display device obtained by combining projection display devices to a personal computer used as a host computer. The present invention relates to a maintenance information processing device.

[0002]

2. Description of the Related Art A conventional combination type projection display device has about 4
A feature is that projection-type display devices having unit screens of about 0 inches are combined, and an integrated large screen that is several times or several tens times larger is reproduced and divided according to the number of combinations.

However, on the other hand, since the image is projected by the projection unit of each projection projection type display device, the paint applied to the projection surface of the projection unit is used for a long time, and each paint is affected by heat or the like. Since the color of each projection display device changes, the "brightness" decreases over time, and the screen becomes significantly dark after a long period of operation, and the "brightness" of each unit screen makes it difficult to see the screen. was there.

For this reason, in some cases, the "brightness" variation is corrected by detecting the level of the brightness signal and making it constant.

An example of this type of device is disclosed in Japanese Patent Application Laid-Open No. 2-
No. 253770 image correction circuit ”.

[0006]

The above-mentioned prior art can suppress the variation in the brightness of each unit screen, but since it is not known when the projection unit should be replaced due to the decrease in the brightness, it can be used as it is for a long time and is important. There is a drawback that the judgment by the image is overlooked, and if the life of the device is not clear, the whole system may be down.

Therefore, an object of the present invention is to eliminate the drawbacks of the above-mentioned prior art and to let the user numerically determine the actual state and prediction of the decrease in brightness by controlling the host computer so that the projection unit can be replaced at an appropriate time. It is to greatly improve the visibility and maintainability of the display device.

[0008]

In order to achieve the above object, a sensor is provided inside the projection display device or the projection unit, and the brightness at the present time is periodically adjusted by a command of the host computer or an operation of a console or a remote controller. The value of and the time until the brightness drops to unusable are displayed on the display connected to the host computer.

Further, in the present invention, in order to control the brightness, the making current of the projection unit can be controlled.
The replacement of the projection unit is installed in the device.

[0010]

[Function] Since the brightness and life of the projection unit can be known, it is possible to know when to replace it, and the replacement projection unit is installed, so it is possible to plan the replacement of the projection unit before the brightness of the screen completely deteriorates and it becomes difficult to see. The projection display device can be operated continuously.

Further, since the brightness value can be controlled, it can be used for a long time by lowering the brightness value according to the installation environment.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A maintenance information processing apparatus as an embodiment of the present invention will be described below in the following order with reference to the drawings.

(1) Configuration of the maintenance information processing device, (2) Hardware and functions of the maintenance information processing device, (3) Definition of symbols used for explanation, (4) Graph showing performance of the maintenance information processing device , (5) function of maintenance information processing apparatus and data storage format for storing data, (6) operation of maintenance information processing apparatus, FIG. 1 is a block diagram showing the configuration of the maintenance information processing apparatus as one embodiment of the present invention. 2 is a schematic diagram showing a mechanical embodiment of the configuration of the block diagram of FIG. 1, FIG. 3 is a schematic diagram showing the connection and function of the hardware of the maintenance information processing apparatus and the personal computer, and FIG. Definitions of symbols used to describe the function and operation of the projection unit of the maintenance information processing apparatus. FIG. 5 is a graph showing the luminance value with respect to the operating time of the projection unit, and FIG. 6 stores performance data of the projection unit. Memory device In explanatory diagram showing a data format, Figure 7
3 is a flowchart showing an operation procedure of the maintenance information display device according to one embodiment of the present invention.

In these figures, 1 is an n × m plane multi-vision, 2 is an interface, 3 is a pre-main amplifier, 4 is a speaker L, 5 is a speaker R, 6 is a video tape recorder, 7 is a laser disk player, and 8 is Host computer, 9 console, 10 display, 11 first projection unit, 12 second projection unit, 13 screen, 15 remote controller, 21 equipment rack, 31 cathode ray tube, 32 lens , 33 is DY, 34 is a control board, 35 is an electron gun, and 36 is a sensor.

The configuration (1) of the maintenance information processing apparatus will be described with reference to these figures.

The host computer 8 is connected to the operator console 9 and the display 10 and n × via the interface 2.
It is electrically connected to the m-plane multivision 1 with a cable,
Video tape recorder 6, laser disc player 7
Is also electrically connected to the n × m plane multivision 1 via the interface 2, and the speakers L4 and 5 are connected to the interface 2 via the pre-main amplifier 3.

Next, (2) the hardware and function of the maintenance information processing apparatus having the above configuration will be described.

As a projection type display device, video tape recorder 6 and laser disc player 7 inputs image information to n × m plane multi-vision 1 via interface 2 and outputs to speaker L, R 4, 5 interface 2 , Audio information is output via the pre-main amplifier 3.

The projection unit for projecting an image on each screen 13 of the n × m plane multivision 1 is always provided with two projection units, a first projection unit 11 and a second projection unit 12, which are exchanged respectively. The interface 2, the pre-main amplifier 3, the video tape recorder 6, the laser disk player 7, the host computer 8, the console 9, and the display 10 are installed in a device storage rack 21.

On the other hand, as the maintenance information processing apparatus having the above-mentioned configuration, the sensor 36 (not shown) is provided at a portion where the light flux of the projection unit 11 reaches and does not obstruct the light flux of the image projected on the screen 13 or the light flux of the projection unit 11 reaches. Is provided to read the brightness of the image projected from the projection unit 11 and transmit it to the host computer 8 so that it is temporarily stored and displayed on the display 10 periodically or by a keyboard input of the console 9. Further, the brightness read by the sensor 36 is reported to the arithmetic unit, the storage device, and the control device (not shown) provided in the host computer 8 or the n × m plane multivision 1, and the brightness is equal to or higher than the set value of each projection unit 11. It is designed so that the feedback control is not applied.

Next, the definition of the symbol (3) will be described with reference to FIG.

N is the number of lines on a single screen of the projection display device.

M is the number of columns of a single screen of the projection display device.

T is a brightness detection interval.

Ti is the elapsed time.

Te is the time until reaching the limit brightness.

Te-Ti is the time until reaching the limit brightness after the time of Ti.

Lo is the initial brightness.

Li represents the brightness after the time of Ti, and Le represents the limit brightness.

Next, (4) the calculation of the life of the projection unit from the brightness based on the current brightness information will be described with reference to the graph of FIG.

In this graph, the vertical axis represents the luminance Li of the projection unit.
Then, the elapsed time Ti is plotted on the horizontal axis and, for example, when the life of the projection unit is defined as when the luminance becomes half the initial value Le, a value obtained by subtracting half the initial value luminance from the current luminance (Li -Le) the decrease rate of luminance (Lo-Li) / Ti
The value obtained by dividing by the value is the life (Te-Ti = (Li-
Le) / (Lo-Li) × Ti), or theoretical calculation values and experimental values separately obtained. Although this graph is shown by a linear curve, a quadratic curve and a cubic curve may be used.
Further, this graph may be an empirical formula or a theoretical calculation, and the storage location may be a temporary storage device of the interface 2 or the host computer 8 or software recorded on a floppy disk, and the brightness and the life are When it is displayed on the display of the host computer 8, information such as "No brightness abnormality" and "Please replace the projection unit in the next 3 months" will be displayed depending on the current brightness value. It is assumed that the interface 2 or the host computer 8 is stored in a temporary storage device or a floppy disk.

Further, the above data is the n × m plane multivision 1
“Cumulative time”, “Elapsed time Ti”, and “Brightness Li” are detected for each “brightness detection interval t” for each single projection unit of, and the interface 2 or the host computer 8 is temporarily operated in the format of FIG. 6, for example. It is assumed that the data is stored in a storage device or a floppy disk as shown in FIG.

Next, the operation procedure of the maintenance information processing apparatus (6) having the above configuration will be described with reference to the flowchart of FIG.

As preprocessing, n × m multivision 1, interface 2, pre-main amplifier 3 speakers L, R
4, 5 and a video tape recorder 6, a laser disk player 7, a host computer 8, a console 9 and a display 10 are installed and connected as shown in FIGS. 1 and 2.

Next, the set of the n × m multivision 1 and the constituent devices is turned on to display an image and start the image. (Step 101) Then, the stored contents such as the accumulated elapsed time Ti, the brightness Li, and the data shown in FIGS. 5 and 6 stored in the interface 2 or the temporary storage device of the host computer 8 or the floppy disk are cleared to zero. (Step 102) Next, the initial brightness Lo of each projection unit 11 is read and stored, and (Step 103) When the brightness detection interval t has elapsed, (Step 104) the brightness detection interval t is added to the cumulative time TT, and (Step 104) 105) The brightness detection time t is cleared to zero and the time counting is started again. (Step 106) During this time, (Step 104) to (Step 106) are simultaneously performed, and then the luminance Li is read (Step 10).
7) It is compared whether or not it is lower than 75% of the initial luminance Lo, (step 108) If it is not lower, the process returns to the connector 2, and if it is lower, it is compared whether it is lower than 55% of the initial luminance Lo (step 109). ) If it is not lower than 55% of the initial brightness Lo, the values of the brightness Li and the current life Te-Ti are calculated (step 110), and the values are displayed on the display 10 or n × m multi-vision 1 (step 114). ) Returning to the connector 2, the initial luminance Lo
If it is less than 55%, it is judged whether the device is at the end of life (step 111), and if it is judged as at the end of life, end processing is performed (step 112), and this loop is ended.

If the life is not reached, the display 10 or n
× m Multivision 1 displays “Luminance is low, please replace the projection unit with a service person” (Step 115) Replace projection unit 11 (Step 116) Connector 1
Return to.

Repeat the above flow chart to continue maintenance,
The cumulative elapsed time Ti and the brightness Li can be fixedly recorded on the floppy disk and stored as maintenance information.

Further, during the operation shown in FIG. 7, the input current is controlled so that the detected brightness of each projection unit 11 does not exceed the set value of each projection unit 11 in parallel.

[0039]

According to the present invention, it is possible to predict the decrease in the brightness of the multi-vision of the maintenance information processing apparatus and the life expectancy due to the brightness, the projection unit can be easily replaced, and the brightness is not increased above the set value. It has the effect of significantly improving performance and life.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a maintenance information display device according to an embodiment of the present invention.

2 is a schematic diagram showing a mechanical embodiment of the glock diagram of FIG. 1. FIG.

FIG. 3 is a schematic diagram showing the connection between the hardware of the maintenance information processing apparatus, which is the main part of the present invention, and the personal computer.

FIG. 4 is a diagram in which definitions of symbols used for description of functions and operations of a projection unit of the maintenance information processing apparatus are described.

FIG. 5 is a graph showing the value of luminance with respect to the elapsed operating time of the projection unit.

FIG. 6 is an explanatory diagram of a data format of a storage device that stores performance data of a projection unit.

FIG. 7 is a flowchart showing an operation procedure of the maintenance information processing apparatus according to the embodiment of the present invention.

[Explanation of symbols]

 1 ... n × m plane multi-vision, 2 ... interface, 3 ... pre-main amplifier, 4 ... speaker L, 5 ... speaker R, 6 ... video tape recorder, 7 ... razor disk player, 8 ... host computer, 9 ... console, DESCRIPTION OF SYMBOLS 10 ... Display, 11 ... 1st projection unit, 12 ... 2nd projection unit, 13 ... Screen, 15 ... Remote controller, 21 ... Equipment storage rack, 31 ... CRT, 32 ... Lens group, 33 ... DY, 34 ... Control board, 35 ... Electron gun, 36 ... Sensor.

Claims (4)

[Claims] 1. A detector detects a current value applied to a projection unit and a brightness projected from the projection unit of a combination display device in which screen surfaces of a plurality of projection display devices are aligned and assembled in left, right, up and down directions. The current value and the brightness are limited to the current value and the brightness applied to the projection unit of each of the projection type display devices by the calculated value which is pre-programmed, or are preset according to the calculated value. A projection type display device, wherein the status information is displayed on the projection type display device or a monitor connected thereto under the control of a host computer controlling the projection type display device. 2. A projection unit near a screen of a large-sized projection display device or a combination-type projection display device, where a projection light flux not impeded by image projection of the projection unit projected on the screen reaches, and the projection unit is reflected by a mirror or the like. An optical sensor is provided in a portion where the luminous flux of the light reaches, and an accumulator that counts and accumulates operating time is provided in a power supply unit of the projection display device or the combination projection display device, and a signal of the sensor, The medium that transmits the cumulative operating time
Connected to an operating table, a personal computer equipped with a display, or an interface equipped with a remote controller, and the "initial brightness" of the projection unit read from the sensor in the storage unit of the personal computer or interface, and the prescribed " A storage device that stores the "cumulative operating time" for each "detection interval" and the "luminance" for each "cumulative operating time", the "cumulative operating time", and the "luminance" for each "cumulative operating time" As a parameter, the device has a "lifetime value" when it reaches a certain brightness, and is equipped with an arithmetic circuit that calculates "time to reach the lifetime value". The "brightness" and "time to reach the lifetime value" are provided. , The operation of the console or remote controller, or the software installed in the personal computer. Shape display device or display connected to the personal computer, the maintenance information processing apparatus characterized in that it is displayed in interactive language format program. 3. The device according to claim 1, wherein the "brightness" and the "time until reaching the life value" are displayed, and "the time until the brightness reaches the life value is 300 days",
Display on the projection display device, the display connected to the personal computer, or the projection display device in the interactive language "The brightness of the screen is low, please replace the projection unit." Maintenance information processing device characterized by. 4. A combination of a projection type display device, which is a combination of a plurality of projection type display devices arranged vertically and horizontally, and a set of screens and a set of first projection units are more than the combination type display device. A maintenance information display device having a mechanically independent structure, wherein a second projection unit is provided on the upper surface or the lower surface of the set of the first projection units.