JPH0882841A - Display device for camera - Google Patents

Abstract

PURPOSE: To make various kinds of indication in a display of a camera easy- to-see by easily distinguishing them. CONSTITUTION: This display device for the camera is provided with a control circuit 1 to which the output signals of a mode setting means 2 for setting an operation mode, an information setting means 3 for setting the information of a shutter speed, a numerical aperture, etc., and a battery checking means 5 for checking the voltage level of a battery are inputted, to control the camera. The control circuit 1 outputs the output signal to a liquid crystal display driver 6 and an LED back light driver 8, to control the display contents of the display 7 composed of a liquid crystal display panel with the display signal of the display driver 6 and controls color generated by respective back light means 9-11 of red, blue and green LEDs with the output signal of the back light driver 8, to change and display the color of the back light of the display 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device used for a camera or the like.

[0002]

2. Description of the Related Art With the progress of computerization of cameras and the increase in functionality thereof, it is necessary to display a lot of information on the information displayed on the camera. Recently, there has been an example of displaying the information on a liquid crystal display. Is increasing. In such a camera with a liquid crystal display, a plurality of "day" -shaped seven segments for indicating each segment indicating the operation mode of the camera and numerical information such as shutter speed are arranged in the liquid crystal display. ing.

[0003]

By the way, the size of the liquid crystal display provided in the camera is limited, and in the case where more information is to be displayed as the functionality of the camera is advanced, each of the above described Segments tend to be smaller, and when a warning is displayed, something other than the flashing display of another segment is used instead of a dedicated segment for that purpose. The display has become difficult to understand.

In view of the above-mentioned problems of the prior art, the first aspect of the present invention is to provide a display device for a camera in which the type of display is easily identified by the color of the backlight. To aim. In view of the above problems of the prior art, it is a second object of the present invention to provide a display device for a camera, in which the identification of the display type is made easy to understand by the color of the display segment. . Claim 9
The third object of the present invention is to provide a display device for a camera in which, in view of the above-mentioned problems of the conventional art, the information regarding the exposure can be easily distinguished by the color of the display segment.

[0005]

In order to achieve the above-mentioned first object, the display device for a camera of the present invention according to claim 1 has an output signal of a mode setting means and an output signal of an information setting means. It has a control circuit for controlling by receiving the output signal of the photometric means and the output signal of the battery checking means, and the control circuit outputs the output signal to the display driver and the backlight driver to display the display signal of the display driver. Is controlled to control the display contents of the display device and the output signal of the backlight driver to control the color generated by the backlight means to change the color of the backlight of the display device. In the present invention according to claims 2 to 4, the control circuit displays in response to a change in the output signal of the mode setting means, a change in the output signal of the battery checking means, or a change in the output signal of the photometric means. An output signal may be output to the driver and the backlight driver to control the display signal of the display driver to control the display content of the display.

In order to achieve the above-mentioned second object, the display device for a camera of the present invention as defined in claim 5 has an output signal of the mode setting means, an output signal of the information setting means and an output signal of the photometric means. The control circuit has a control circuit that receives the output signal of the battery check means and performs control. The control circuit outputs the output signal to the multicolor display driver and controls the display signal of the multicolor display driver to control the multicolor display driver. The display content and display color of the display device are controlled. According to the present invention as set forth in claims 6 to 8, the control circuit comprises a change in the output signal of the mode setting means or a change in the output signal of the battery checking means.
Alternatively, in response to a change in the output signal of the photometric means, an output signal is output to the multicolor display driver to control the display signal of the multicolor display driver to control the display contents of the multicolor display and display color. It may be changed. In order to achieve the above-mentioned third object, in the invention as set forth in claim 9, the control circuit exposes based on the output signal of the information setting means and the output signal of the photometric means in accordance with the output signal of the mode setting means. A multicolor display driver that calculates information and outputs an output signal to the multicolor display driver so that the information corresponding to the output signal of the information setting means and the exposure information based on the calculation are displayed in different display colors. The display signal may be controlled to control the display content of the multicolor display device and change the display color.

[0007]

According to the inventions as set forth in claims 1 to 4 having the above construction, the display of the backlight of the display is provided with a display such as a set mode which cannot be distinguished unless a small segment display is conventionally seen. Can be easily distinguished by the change of.

According to the present invention as set forth in claims 5 to 8, the display of the set mode and the like, which cannot be distinguished unless the small segment display is conventionally seen, and some warning display are also displayed. Can be easily distinguished by. Further, according to the invention described in claim 9, the information set by the user himself and the information calculated by the camera can be clearly distinguished and displayed depending on the display color of the display segment.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A first embodiment of the present invention will be described below with reference to FIGS.
It will be described based on. FIG. 1 is a block diagram of an electric circuit for operating the display device of this embodiment. In FIG. 1, reference numeral 1 is a control circuit including a microcomputer or the like. Reference numeral 2 is a mode setting means for setting an operation mode of the camera, 3 is an information setting means for setting information such as a shutter speed and an aperture value, 4 is a photometric means for obtaining brightness information of a subject, and 5 is a power source. It is a battery check means for knowing the voltage level of the battery. Then, the respective setting information of the mode setting means 2 and the information setting means 3 and the respective outputs of the photometric means 4 and the battery checking means 5 are input to the control circuit 1 to be control information for controlling the camera. There is.

Reference numeral 6 denotes a display driver which is, for example, a liquid crystal display driver and is operated by an output signal from the control circuit 1.
Reference numeral 7 denotes, for example, a display composed of a transmissive liquid crystal display panel, in which a plurality of "day" -shaped 7 segments for displaying numerical information such as shutter speed are arranged, and a drive output of the display driver 6 is given. Each segment is lit and displayed. Reference numeral 8 denotes a backlight driver, which is, for example, an LED driver, and performs drive output based on a backlight control signal output from the control circuit 1. Reference numerals 9, 10, and 11 are backlight means made of, for example, LEDs, which are red LEDs, blue LEDs, and green LEDs, respectively, in the present embodiment, and are turned on by inputting an output signal of the backlight driver 8.

FIG. 2 shows a specific example of the display segment arranged on the display 7. As shown in the figure, a 4-digit 7-segment 7a as a display segment, a 2-digit 7-segment 7b including a decimal point, and a segment 7 showing the outer shape of a battery
with c and. In this embodiment, a 4-digit 7-segment 7a
Is used to represent shutter speed information, a 2-digit 7 segment 7b including a decimal point is used to represent aperture value information, and a segment 7c representing the outer shape of the battery is not suitable for a battery when the voltage of the battery is insufficient. Used to represent a warning.

A specific operation of the control circuit 1 of the present embodiment having the above configuration will be described with reference to the flowchart of FIG. First, when an unillustrated power switch is turned on and the control circuit 1 becomes operable, the operation step is started. In step 1, the control circuit 1 initializes its own memory, flags and ports. In step 2, the output signal from the battery check means 5 is read and compared with a predetermined judgment level. In the comparison result, if it is determined that the battery outputs enough voltage to operate the camera, the process proceeds to step 5, but if the battery does not output enough voltage to operate the camera. If it is determined that the result is not present, the process proceeds to step 3.

In step 3, the control circuit 1 outputs information to the display driver 6 so as to turn on the segment 7c of the display 7 which indicates that the battery is inadequate, whereby the segment 7c of the display 7 is illuminated. To be done. In step 4, the control circuit 1 outputs information to the backlight driver 8 so that the red LED 9 blinks and is turned on, and as a result, the red light is used as the backlight means to illuminate the display 7 while blinking the indicator 7. As a result, the segment 7c that indicates the battery inadequacy that has been lit in step 3 is displayed with blinking red as background light, and the process returns to step 2. If the battery does not output enough voltage to operate the camera as described above,
The segment indicating battery inadequacy is only displayed as flashing red background light and the camera does not work.

On the other hand, if it is determined in step 2 that the battery outputs a voltage sufficient to operate the camera as described above, the process proceeds to step 5. Step 5
Then, the control circuit 1 clears its own photometric value warning flag WF to zero. Since this step is initialized in step 1 here, this step has no special meaning, but this step is used for releasing after the flag WF once becomes 1 in the later step. In step 6, the control circuit 1 reads the output of the mode setting means 2 and checks whether the manual exposure mode is set or the automatic exposure mode is set. If the manual exposure mode is set, go to step 7.

In step 7, the control circuit 1 reads the information such as the shutter speed and the aperture value set by the information setting means 3 and outputs the information to the display driver 6 to display a plurality of information in the display 7. It is displayed by 7 segments of the "day" shape. In step 8, the control circuit 1 outputs information to the backlight driver 8 so that the blue LED 10 is turned on. As a result, the indicator 7 is transmitted and illuminated with a blue backlight as the backlight means, and when the manual exposure mode is set, the shutter speed, aperture value, etc. turned on in the step 7 Information is displayed with blue as the background light.

At step 9, the control circuit 1 checks whether or not a release switch (not shown) is turned on. If the release switch is off, the process returns to step 2 and the above steps are repeated. If the release switch is turned on, the process proceeds to a release routine to control the shutter and the like, but a detailed description of the release routine is omitted because it is not directly related to the present invention.

If the output of the mode setting means 2 is in the automatic exposure mode in step 6 described above, step 10
Proceed to. In step 10, the control circuit 1 reads the output of the photometric means 4 to obtain the brightness information of the subject. Step 11
Then, the control circuit 1 checks whether or not there is a possibility that the brightness information of the subject read in step 10 has exceeded the photometric range of the photometric means 4. If there is a possibility that it has exceeded the photometric range of the photometric means 4, the process proceeds to step 12.

In step 12, the control circuit 1 sets the photometric value warning flag WF, which is its own flag, to 1. If there is no possibility that the brightness information of the subject has exceeded the photometric range of the photometric means 4 in step 11, the process proceeds to step 13 without passing through step 12. Step 1
In 3, the control circuit 1 calculates a shutter speed and an aperture value for giving an appropriate exposure based on the brightness information of the subject read in step 10. In step 14, the control circuit 1 checks whether the shutter speed and aperture value calculated in step 13 are within the controllable shutter speed range of the camera or within the aperture value range. If either the shutter speed or the aperture value is not within the controllable range, the process proceeds to step 15.

In step 15, the control circuit 1 sets the photometric value warning flag WF, which is its own flag, to 1. If both the shutter speed and the aperture value are within the controllable range in step 14, the process proceeds to step 16 without passing through step 15. In step 16, the control circuit 1 outputs the information on the shutter speed and the aperture value calculated in step 13 to the display driver 6 and displays the information in a plurality of "day" -shaped seven segments in the display unit 7. Let In step 17, the control circuit 1 checks whether the photometric value warning flag WF which is its own flag is 0 or 1. If it is 0, the process proceeds to step 18.

In step 18, the control circuit 1 outputs information to the backlight driver 8 so as to turn on the green LED 11. As a result, a green backlight is used as the backlight means to illuminate the display 7 through transmission, and when the automatic exposure mode is set, the shutter speed, aperture value, etc. turned on in step 16 are set. Information is displayed with green as the background light. That is, when the photometric value warning flag WF is 0, there is no possibility that the photometric means 4 has exceeded the photometric range, and both the shutter speed and the aperture value are within the controllable range. In some cases, appropriate exposure can be obtained, and the background light becomes green, which means that appropriate exposure can be obtained. Further, when the manual exposure mode is set, it is also distinguished that the information such as the shutter speed and the aperture value turned on in step 7 is displayed with blue as the background light. If the photometric value warning flag WF is 1 in step 17, the process proceeds to step 19.

At step 19, the control circuit 1 outputs information to the backlight driver 8 so as to turn on the red LED 9. As a result, the display unit 7 is transmitted and illuminated with a red backlight as a backlight unit, and information such as the shutter speed and the aperture value turned on in step 16 is displayed with red as background light. That is, the case where the photometric value warning flag WF is 1 may exceed the photometric range of the photometric means 4, but
When either the shutter speed or the aperture value is not within the controllable range, it means that proper exposure cannot be obtained. Become. After execution of step 18 or step 19, the process proceeds to step 9 and the above steps are repeated.

4 and 5 show a second embodiment of the present invention. For simplification of description, the same parts as those in the first embodiment are designated by the same reference numerals, and only different points will be described. FIG. 4 is a block diagram of an electric circuit for operating the display device of this embodiment. In this embodiment, instead of the display driver 6, the display 7, the backlight driver 8 and the backlight means 9 to 11 in the first embodiment described above, a multicolored color liquid crystal display driver connected to the control circuit 1 is used. The display driver 21 and a multi-color display 22 capable of color display, which is connected to the display driver 21 and includes, for example, a color type liquid crystal display panel. The other structure is similar to that of the first embodiment.

In the present embodiment having the above-described structure, the multicolor display 22 has a plurality of "day" -shaped 7's for displaying numerical information such as the shutter speed as in the display 7 of the first embodiment. Multi-color display driver 2 in which segments etc. are arranged
A drive output of 1 is given and each segment is lit and displayed. In addition, the multicolor display driver 21 and the multicolor display 22 have a dot matrix type segment configuration,
It goes without saying that the same display can be made without having a plurality of 7-day-shaped segments and a segment representing the outer shape of the battery.

The specific operation of the control circuit 1 of this embodiment will be described below with reference to the flowchart of FIG. First, when an unillustrated power switch is turned on and the control circuit 1 becomes operable, the operation step is started. Step 21
Then, the control circuit 1 initializes its own memory, flags and ports. In step 22, the output signal from the battery check means 5 is read and compared with a predetermined judgment level. In the comparison result, if it is determined that the battery outputs enough voltage to operate the camera, the process proceeds to step 24. However, if the battery does not output enough voltage to operate the camera. If it is determined that the result is not present, the process proceeds to step 23.

In step 23, the control circuit 1 outputs information to the display driver 21 so that the segment of the multicolor display 22 which indicates the battery incompatibility is made to blink and light in red, whereby the multicolor display 22 is output. , A segment indicating that the battery is unsuitable is blinking and displayed in red, and the process returns to step 22. As described above, when the battery does not output sufficient voltage to operate the camera, the segment indicating battery inadequacy is only displayed in blinking red, and the camera does not operate.

On the other hand, if it is determined in step 22 that the battery outputs a voltage sufficient to operate the camera as described above, the process proceeds to step 24. At step 24, the control circuit 1 clears its own photometric value warning flag WF to zero. Here, step 2
This step has no special meaning because it has been initialized by 1. However, the flag WF is set to 1 once in a later step.
This step is used to release after becoming. In step 25, the control circuit 1 reads the output of the mode setting means 2 and checks whether the manual exposure mode is set or the automatic exposure mode is set. If the manual exposure mode is set, step 26
Go to.

In step 26, the control circuit 1 reads the information such as the shutter speed and the aperture value set by the information setting means 3 and outputs the information to the multicolor display driver 21 so that it is displayed in blue. And multi-color display 22
It is displayed in blue by the seven segments of the "day" shape in the. Thus, when the manual exposure mode is set, information such as the shutter speed and the aperture value is displayed in blue. In step 27, the control circuit 1 checks whether or not a release switch (not shown) is turned on. If the release switch is off, the process returns to step 22 and the above steps are repeated. If the release switch is turned on, the process proceeds to the release routine to control the shutter and the like. However, since the detailed description of the release routine is not directly related to the present invention, it will be omitted like the above-described embodiment.

If the output of the mode setting means 2 is in the automatic exposure mode in step 25, then step 2
Proceed to 8. In step 28, the control circuit 1 reads the output of the photometric means 4 to obtain the brightness information of the subject. Step 2
In 9, the control circuit 1 checks whether or not the brightness information of the subject read in step 28 may exceed the photometric range of the photometric means 4. If there is a possibility that it has exceeded the photometric range of the photometric means 4, the process proceeds to step 30.

In step 30, the control circuit 1 sets the photometric value warning flag WF, which is its own flag, to 1. If there is no possibility that the brightness information of the subject has exceeded the photometric range of the photometric means 4 in step 29, the process proceeds to step 31 without passing through step 30. Step 3
In 1, the control circuit 1 calculates a shutter speed and an aperture value for giving an appropriate exposure based on the brightness information of the subject read in step 28. In step 32, the control circuit 1 checks whether the shutter speed and the aperture value calculated in step 31 are within the controllable shutter speed range of the camera or within the aperture value range. If either the shutter speed or the aperture value is not within the controllable range, the process proceeds to step 33.

In step 33, the control circuit 1 sets its own photometric value warning flag WF to 1. If both the shutter speed and the aperture value are within the controllable range in step 32, the process proceeds to step 34 without passing through step 33. In step 34, the control circuit 1 determines whether the photometric value warning flag WF, which is its own flag, is 0 or 1
Check if If it is 0, the process proceeds to step 35.

In step 35, the control circuit 1 outputs the information on the shutter speed and the aperture value calculated in step 31 to the multicolor display driver 21 so as to display them in green, and outputs the information in the multicolor display 22. Multiple "day" shapes 7
Display in green depending on the segment. Thus, when the automatic exposure mode is set and the photometric value warning flag WF is 0, information such as the shutter speed and the aperture value is displayed in green. That is, when the photometric value warning flag WF is 0, there is no possibility that the photometric value of the photometric means 4 has exceeded the range, and both the shutter speed and the aperture value are within the controllable range. Because in some cases,
This is a case where proper exposure is obtained, and means that proper exposure is obtained, and information such as the shutter speed and aperture value is displayed in green. It is also distinguished from the fact that when the manual exposure mode is set, the information such as the shutter speed and the aperture value turned on in step 26 is displayed in blue. If the photometric value warning flag WF is 1 in step 34, the process proceeds to step 36.

In step 36, the control circuit 1 outputs the information such as the shutter speed and the aperture value to the display driver 21 so as to be displayed in red in step 31, and the display unit 2
Displayed in red by multiple 7-segments of the "day" shape in 2. Thus, when the automatic exposure mode is set and the photometric value warning flag WF is 1, information such as the shutter speed and the aperture value is displayed in red. In other words, the case where the photometric value warning flag WF is 1 may exceed the photometric range of the photometric means 4, but either the shutter speed or the aperture value is within the controllable range. This is a case where the proper exposure cannot be obtained, which means that the proper exposure cannot be obtained, and information such as the shutter speed and the aperture value is displayed in red.

6 and 7 are flow charts for explaining the third embodiment of the present invention. The electric circuit configuration is the same as that of the second embodiment shown in FIG. Therefore,
A specific operation of the control circuit 1 of this embodiment will be described with reference to the flowcharts of FIGS. 6 and 7. First, when a power switch (not shown) is turned on and the control circuit 1 becomes operable,
Start the operation step. In step 41, the control circuit 1 initializes its own memory, flags and ports. In step 42, the control circuit 1 controls the mode setting means 2
Read the output of and check if the manual exposure mode or another automatic exposure mode is set. If the manual exposure mode is set, the process proceeds to step 43. In step 43, the control circuit 1 reads the information on the shutter speed and the aperture value set by the information setting means 3 to know the manually set information value.

In step 44, the control circuit 1 outputs the manually set information value obtained in step 43 to the multicolor display driver 21 so that both are displayed in blue, and the multicolor display 22 is displayed. It is displayed in blue by the seven segments of the "day" shape in the. Thus, both the shutter speed information and the aperture value information are displayed in blue when the manual exposure mode is set. At step 45, the control circuit 1 checks whether or not a release switch (not shown) is turned on. If the release switch is off, the process returns to step 42 and the above steps are repeated. If the release switch is turned on, the process proceeds to the release routine to control the shutter and the like. However, since the detailed description of the release routine is not directly related to the present invention, it will be omitted like the above-described embodiment.

If the output of the mode setting means 2 is other than the manual exposure mode in step 42, the process proceeds to step 46. In step 46, the control circuit 1 reads the output of the mode setting means 2 and checks whether or not the shutter speed priority automatic exposure mode is set. If so, go to step 47. In step 47, the control circuit 1 reads the shutter speed information set by the information setting means 3 to know the manually set information value. In step 48, the control circuit 1 reads the output of the photometric means 4 to obtain the brightness information of the subject.

In step 49, the control circuit causes the luminance information of the subject obtained in step 48 and the step 47 described above.
Based on the information on the shutter speed obtained in step 1, the aperture value that gives the proper exposure is calculated. In step 50, the control circuit 1 checks whether the aperture value calculated in step 49 is within the controllable aperture value range of the camera.
If it is within the controllable range, the process proceeds to step 51.

In step 51, the control circuit 1 outputs the manually set shutter speed information value obtained in step 47 to the multicolor display driver 21 so that it is displayed in blue, and in step 49. Aperture value information obtained by calculation in
Is output so that it is displayed in green. As a result, the shutter speed information is displayed in blue and the aperture value information is displayed in green due to the plurality of 7-day "day" -shaped segments in the multicolor display 22. Thus, when the manual exposure mode is set, both the shutter speed information and the aperture value information are displayed in blue, whereas in the shutter speed priority automatic exposure mode, the aperture value information calculated by the camera is displayed in green. It is distinguished because it is made.

If it is determined that the aperture value calculated in step 50 is not within the controllable aperture value range of the camera, the process proceeds to step 52. In step 52, the control circuit 1 sets the manually set shutter speed information value obtained in step 47 to the multicolor display driver 2
1 is output so that it is displayed in blue, and the aperture value information obtained by calculation in step 49 is output to be displayed in red in the multicolor display driver 21. As a result, the shutter speed information is displayed in blue and the aperture value information is displayed in red by the plurality of 7-segment "day" shapes in the multicolor display 22. The case where the aperture value calculated in the step 50 is not within the controllable aperture value range of the camera is a case where the proper exposure cannot be obtained, and when the proper exposure is obtained, the aperture is calculated in the step 51. Value information is distinguished from that displayed in green.

When step 51 or step 52 is completed, the process proceeds to step 45 and the above steps are repeated. If the shutter speed priority automatic exposure mode is not set in step 46, step 53
Go to. In step 53, the control circuit 1 reads the output of the mode setting means 2 and checks whether the aperture priority automatic exposure mode is set. If so, go to step 54. In step 54, the control circuit 1 reads the information of the aperture value set by the information setting means 3 and knows the manually set information value. In step 55, the control circuit 1 reads the output of the photometric means 4 to obtain the brightness information of the subject.

In step 56, the control circuit 1 uses the brightness information of the object obtained in step 55 and the step 5
Based on the information on the aperture value obtained in step 4, a shutter speed that achieves proper exposure is calculated. In step 57, the control circuit 1 checks whether the shutter speed calculated in step 56 is within the controllable shutter speed range of the camera. If it is within the controllable range, the process proceeds to step 58.

At step 58, the control circuit 1 outputs the manually set aperture information value obtained at step 54 to the multicolor display driver 21 so that it is displayed in blue, and at step 56. The shutter speed information obtained by the calculation is output to the multicolor display driver 21 so that it is displayed in green. As a result, the shutter speed information is displayed in green and the aperture value information is displayed in blue by the seven segments of the "day" shape in the multicolor display 22. Thus, when the manual exposure mode is set, both the shutter speed information and the aperture value information are displayed in blue, and in the shutter speed priority automatic exposure mode, the shutter speed information is displayed in blue, and the aperture value information calculated by the camera is displayed. In contrast to what is displayed in green, the shutter speed information is displayed in green and the aperture value information is displayed in blue in the aperture-priority automatic exposure mode.

If it is determined that the shutter speed calculated in step 57 is not within the controllable shutter speed range of the camera, the process proceeds to step 59. In step 59, the control circuit 1 outputs the manually set aperture information value obtained in step 54 to the multicolor display driver 21 so as to display it in blue, and also calculates it in step 56. The shutter speed information thus obtained is output to the multicolor display driver 21 so that it is displayed in red. As a result, the shutter speed information is displayed in red and the aperture value information is displayed in blue by the plurality of 7-day segments of the "day" shape in the multicolor display 22. The case where it is determined that the shutter speed calculated in the step 57 is not within the controllable shutter speed range of the camera is a case where an appropriate exposure cannot be obtained, and when the appropriate exposure is obtained, Step 5
In 8, the shutter speed information is distinguished from that displayed in green.

When step 58 or step 59 is completed, the routine proceeds to step 45, and the above-mentioned steps are repeated. If it is determined in step 53 that the aperture priority automatic exposure mode is not set, it is determined that the program automatic exposure mode is set, and the process proceeds to step 60. In step 60, the control circuit 1 reads the output of the photometric means 4 to obtain the brightness information of the subject.

In step 61, the control circuit 1 calculates a shutter speed and an aperture value for giving an appropriate exposure based on the brightness information of the subject obtained in step 60. In step 62, the control circuit 1 checks whether the shutter speed and the aperture value calculated in step 61 are within the controllable shutter speed range of the camera or within the aperture value range. If both the shutter speed and the aperture value are within the controllable range, step 63
Go to.

In step 63, the control circuit 1 outputs the shutter speed and aperture value information calculated in step 61 to the multicolor display driver 21 so as to be displayed in green, and the multicolor display 22 is displayed. It is displayed in green with multiple 7-segment "day" shapes. Thus, when the manual exposure mode is set,
Both shutter speed information and aperture value information are displayed in blue,
In the shutter speed priority automatic exposure mode, the shutter speed information is displayed in blue, the aperture value information calculated by the camera is displayed in green, and in the aperture priority automatic exposure mode, the shutter speed information is displayed in green and the aperture value information is displayed in blue. On the other hand, in the program automatic exposure mode, the calculated shutter speed and aperture value information are both displayed in green, so they are distinguished.

If it is determined in step 62 that either the shutter speed or the aperture value is not within the controllable range, the process proceeds to step 64. In step 64, the control circuit 1 outputs the information on the shutter speed and the aperture value calculated in step 61 to the multicolor display driver 21.
Both of them are output so as to be displayed in red, and are displayed in red by the 7-segments of a plurality of "day" shapes in the multicolor display 22. If either one of the shutter speed and the aperture value calculated in step 61 is not within the controllable range, it means that proper exposure cannot be obtained. At 63, both the shutter speed information and the aperture value information are distinguished from those displayed in green. Step 63
Alternatively, when step 64 is completed, the process proceeds to step 45 and the above steps are repeated.

[0047]

As described above, according to the present invention as set forth in claims 1 to 4, the set mode which cannot be distinguished unless the small segment display is conventionally seen can be easily distinguished by the change of the color of the backlight. In addition, the warning display when the battery is inadequate and the warning display when the proper exposure cannot be obtained can be easily distinguished by changing the color of the backlight.

As described above, according to the present invention as set forth in claims 5 to 8, the set mode which cannot be distinguished unless the small segment display is conventionally seen can be easily distinguished by the change in the color of the display segment. In addition, the warning display that the battery is not suitable and the warning display when the proper exposure cannot be obtained can be easily distinguished by the color change of the display segment.

As described above, according to the present invention as set forth in claim 9, the information set by the user and the information calculated by the camera can be clearly distinguished and displayed due to the difference in the display color of the display segment. Also, the operation mode set by the mode setting means can be easily distinguished by the difference in display color of these display segments.

[Brief description of drawings]

FIG. 1 is a block circuit diagram of a display device of a camera according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a display example of display segments of the display device.

FIG. 3 is a flowchart illustrating the operation.

FIG. 4 is a block circuit diagram of a display device of a camera according to a second embodiment of the present invention.

FIG. 5 is a flowchart illustrating an operation of the display device of the camera according to the third embodiment of the present invention.

FIG. 6 is a flowchart illustrating an operation of the display device of the camera according to the third embodiment of the present invention.

FIG. 7 is a continuation of the flowchart of FIG.

[Explanation of symbols]

1 ... Control circuit, 2 ... Mode setting means, 3 ... Information setting means, 4 ... Photometric means, 5 ... Battery check means, 6 ... Display driver, 7 ... Display, 8 ... Backlight Driver, 9, 10, 11 ... Backlight means, 21 ... Multicolor display driver, 22 ... Multicolor display

Claims (9)

[Claims] 1. A control circuit for controlling by receiving an output signal of a mode setting means, an output signal of an information setting means, an output signal of a photometric means, and an output signal of a battery checking means, the control circuit having a display. The output signal is output to the driver and the backlight driver to control the display signal of the display driver to control the display content of the display unit and the output signal of the backlight driver to control the color generated by the backlight unit. A display device for a camera, which is controlled to change the color of the backlight of the display device. 2. The display device for a camera according to claim 1, wherein the control circuit outputs an output signal to a display driver and a backlight driver in response to a change in the output signal of the mode setting means. 3. The display of the camera according to claim 1, wherein the control circuit outputs an output signal to the display driver and the backlight driver in response to a change in the output signal of the battery check means. apparatus. 4. The control circuit outputs an output signal to a display driver and a backlight driver in response to a change in the output signal of the photometric means.
The display device of the camera described in 2 or 3. 5. A control circuit is provided which controls by receiving an output signal of the mode setting means, an output signal of the information setting means, an output signal of the photometric means, and an output signal of the battery checking means, and the control circuit has multiple control circuits. A display device for a camera, which outputs an output signal to a color display driver to control a display signal of the multicolor display driver to control display contents and display colors of the multicolor display. 6. The display device for a camera according to claim 5, wherein the control circuit outputs an output signal to the multicolor display driver in response to a change in the output signal of the mode setting means. 7. The display device for a camera according to claim 5, wherein the control circuit outputs an output signal to the multicolor display driver in response to a change in the output signal of the battery checking means. 8. The display device for a camera according to claim 5, wherein the control circuit outputs an output signal to a multicolor display driver in response to a change in the output signal of the photometric means. . 9. The control circuit calculates exposure information based on the output signal of the information setting means and the output signal of the photometric means according to the output signal of the mode setting means, and obtains the information according to the output signal of the information setting means. An output signal is output to the multicolor display driver so that the exposure information based on the calculation is displayed in a different display color, and the display signal of the multicolor display driver is controlled to control the display content of the multicolor display. 6. The display device for a camera according to claim 5, wherein the display color is changed as well.