JPH08166628A - Display device for camera - Google Patents

Abstract

PURPOSE: To enable the addition of specification for which an exclusive display is required in a conventional manner without providing a special display member in a display device for a camera capable of displaying only seven two-digit segments. CONSTITUTION: The display device for the camera is provided with, at least, a display means having a negative display form and display control means executing the drive control of the display means based on photographing information, and the display control means constituted a negative display instructing part capable of displaying the negative display of a part of the display means. Moreover, the negative display instructing part of the display control means executes the instruction control to a part of a picture display part capable of displaying the remaining amount of the battery of the camera stepwise, as the display means, as a negative display part 305. Then, the display control means executes the instruction control to display only numerals on a numerical display part consisting of seven two-digit segments 301 capable of displaying the number of sheets of photographed film, stop value and exposure correction value of the camera stepwise and turn off the picture display part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for a camera which has only a 7-segment liquid crystal display member with a small number of digits and which adds camera specifications such as exposure compensation.

[0002]

2. Description of the Related Art Two conventional examples will be described with reference to FIGS. First, FIGS. 5 and 6 show examples of expressing plus / minus amounts by bar display, and the display contents of FIG. 5 will be described.

Reference numeral 401 is a 4-digit 7-segment, which is used for displaying a TV value and ISO sensitivity. Reference numeral 402 is a 2-digit 7-segment, which is used for displaying an AV value. A battery display 403 is used for displaying the remaining battery level. 404
Is a patrone mark, which indicates that a film is loaded or blinks to indicate that auto rewind has failed.
Reference numeral 405 is a bar display for displaying a plus or minus amount, and the exposure condition (TV, AV) set by the exposure correction amount and the manual at the manual exposure and the exposure condition (TV by the photometric member of the camera) , AV) deviation amount is displayed. A film counter 406 displays the number of shots and the remaining number of shots together with the frame display 407. Also, the frame display 40
When 7 is turned off, the number of multiple exposures and other function numbers are displayed.

A display example of the exposure correction amount in a camera having a liquid crystal display as shown in FIG. 5 will be described with reference to FIG. FIG. 6A shows a state in which the exposure is not corrected, and a dot is lit at the position of “0” on the bar. FIG. 6B shows a state in which the exposure correction is plus one step, and the dot is lit at the position of “+1” on the bar. FIG. 6C shows a state in which the exposure compensation is minus one step, and the bar "-1" is displayed.
The dot is lit at the position.

The above display method is an example in which whether or not the exposure is being corrected is displayed, and the plus / minus amount is displayed as a bar independently of other displays and is always displayed.

Next, in the example in which the exposure correction amount is not always displayed, an example having a plus / minus dedicated segment is shown in FIG.
This will be described with reference to FIG.

The display contents of FIG. 7 will be described. 601 is 4
It is used to display TV values and ISO sensitivity with 7 digits. Reference numeral 602 is a 2-digit 7-segment used for displaying an AV value. Further, by using the plus / minus display 603 and the two-digit seven segment 602, the exposure correction amount is displayed during the exposure correction setting. A film counter 604 displays the number of shots and the remaining number of shots together with the frame display 610.

By turning off the frame display 610, the number of multiple exposures and other function numbers are displayed. A battery display unit 605 is used to indicate the remaining battery level. Reference numeral 606 is a mode display unit that displays the autofocus mode, and 607 is a function display unit that displays the function state of the camera during single-shot / continuous shooting of feeding or during multiple exposure. Reference numeral 608 denotes a cartridge mark, which indicates that a film is loaded, or blinks to indicate that auto rewind has failed. An exposure correction mark 609 is displayed when the exposure correction is set.

When the exposure correction is not applied in the constant display state, the exposure correction mark 609 is turned off as shown in FIG. 9A, and when the exposure correction is applied as shown in FIG. 9B. The exposure correction mark 609 lights up.

Here, a display example of the exposure correction amount in a camera having a liquid crystal display as shown in FIG. 7 will be described with reference to FIG.

FIG. 8A shows a state where the exposure compensation is not applied in the exposure compensation setting state, and FIG. 8B shows a state where the exposure compensation is added by one step in the exposure compensation setting state. FIG. 8C shows a state in which the exposure correction is set by minus one step in the exposure correction setting state. In the above display method, whether or not the exposure correction is applied is displayed by the exposure correction mark 609, and in the constant display state,
The example in which the exposure correction amount is not displayed has been described.

[0012]

However, only the battery remaining amount display and the film counter can be displayed.
In a camera having only a 7-segment liquid crystal member, it is difficult to display an amount having a plus or minus value such as an exposure correction amount or a deviation amount during manual exposure.

An object of the present invention is, for example, in a camera having only a liquid crystal member capable of displaying only a battery remaining amount display and a film counter, the amount having positive and negative values such as the exposure correction amount and the deviation amount at the manual exposure. The purpose of the present invention is to make it easy to display, and to add a specification such as exposure compensation which has conventionally required a dedicated display without expanding the display member.

[0014]

The structure for achieving the object of the invention according to the present application comprises at least a display means having a minus display form and a display control means for driving and controlling the display means based on photographing information. The display control means has a minus display instructing section for displaying a part of the display means in a minus display.

According to this structure, in the display device of the camera, the amount having the plus value and the minus value can be easily and clearly displayed, and the conventional dedicated display is required without providing another display member. It is possible to add the specifications that were.

As a concrete means of the above-mentioned constitution, as described in claim 2, in claim 1, the minus display instructing section of the display control means, as the display means, stepwise the battery remaining amount of the camera. It is characterized in that a part of the picture display portion that can be displayed on the display is controlled as a minus display portion.

According to this structure, for example, in a camera having only a display member capable of displaying only the battery remaining amount display and the film counter, it is possible to easily display a negative value without providing another display member.

Further, as described in claim 3, claim 2
In the above, the display control means operates the minus display instructing section when the exposure correction is set to the under side.

According to this structure, it is possible to display the exposure correction amount on the under side without providing another display member.

Another specific configuration for realizing the object of the invention according to the present application is, as described in claim 4, in claim 1, 2 or 3, manual exposure photographing is possible and photometric means is provided in the camera. And counting means for calculating the deviation between the exposure conditions set manually and the exposure conditions measured by the photometric means of the camera, and based on the information from the counting means, the display control means It is characterized in that the minus display instruction section is operated to display the minus deviation amount of the exposure condition on the display means.

According to this configuration, for example, the exposure correction amount,
It becomes easy to display the amount having positive and negative values such as the amount of deviation between the manual exposure photographing and the photometric means in the camera.

Further, as described in claim 5, claim 4
In the case of displaying the plus amount on the display means, the display control means displays only the number on the numerical display portion consisting of two-digit seven segments capable of displaying the number of images taken by the camera, the aperture value and the exposure correction amount stepwise. It is characterized in that display control is performed and instruction control is performed to turn off the picture display unit.

According to this configuration, for example, the exposure correction amount,
When the deviation amount between the manual exposure photographing and the photometric means in the camera is displayed, a plus value display without any discomfort can be obtained.

Further, as described in claim 6, in claim 1, 2, 3, 4 or 5, the display means having at least a minus display form is arranged around a 2-digit 7 segment for displaying a film counter. When a numerical display unit having a frame display unit and a picture display unit capable of displaying the remaining battery level of the camera in stages and exposure compensation is set, the minus display instruction unit of the display control means is It is characterized in that an instruction is given to blink only the frame display portion of the numerical value display portion.

According to this structure, by using blinking lighting of the frame display section for expressing the state of the camera, it is possible to display a setting state such as exposure correction without having a dedicated segment.

[0026]

【Example】

First Embodiment FIGS. 1 to 3 show a first embodiment of the present invention.

First, a first embodiment in which one segment for displaying the remaining battery capacity is also used as a minus display when the exposure correction is set to the under side will be described below.

FIG. 2 is a block diagram showing the electric control of the camera of this embodiment.

Reference numeral 1 is a microcomputer for controlling the movement of each part of the camera, and 2 is a lens control circuit for driving and controlling a focus adjusting motor and a diaphragm blade controlling motor of a photographing lens (not shown). While the lens control circuit 2 receives the LCOM signal from the microcomputer 1,
Serial communication is performed via DBUS. The motor drive information is received by serial communication, and the motor is driven and controlled by the information. At the same time, various information about the lens, such as the focal length, is sent to the microcomputer 1 by serial communication.

Reference numeral 3 denotes a liquid crystal display circuit, which is a circuit for driving a liquid crystal display 10 which will be described later for notifying the photographer of the battery remaining amount of the camera and the number of photographed images. The liquid crystal display circuit 3 performs serial communication via DBUS while receiving the DPCOM signal from the microcomputer 1.
Display data is received by serial communication, and the liquid crystal display 10 is driven according to the data.

Reference numeral 4 denotes a switch sense circuit, which is a circuit for the photographer to set various photographing conditions and a circuit for reading the state of the switch showing the state of the camera and sending it to the microcomputer 1, which receives the SWCOM signal. During this time, the switch data is sent to the microcomputer 1 by serial communication via DBUS.

Reference numeral 5 is a strobe light emission control circuit,
It is a circuit that controls the flash emission and the emission stop function by TTL dimming. The flash emission dimming control circuit 5 is ST
While receiving the COM signal, it serially communicates with the microcomputer 1 via the DBUS to receive data relating to strobe control and perform various controls.

A focus detection circuit 6 is a line sensor for performing AF by the existing phase difference detection method and a circuit unit for reading and storing the line sensor, which is controlled by the microcomputer 1.

Reference numeral 7 denotes a photometric circuit, which measures a subject and sends a photometric output to the microcomputer under the control of the microcomputer 1. The microcomputer 1 A / D-converts the sent photometric output and uses it for setting exposure conditions such as aperture amount and shutter speed.

Reference numeral 8 denotes a shutter control circuit which controls traveling of a shutter front curtain and a rear curtain (not shown) according to a control signal from the microcomputer 1.

A feeding circuit 9 feeds (winds and rewinds) the film in accordance with a control signal from the microcomputer 1.

SW1 is a push-button type first switch for starting the operation of the camera, and the first switch SW1 is turned on.
When the microcomputer 1 recognizes what has been done, it starts photometry, distance measurement, and display. SW2 is a second switch that works in conjunction with the release button of the camera, and starts the exposure operation when the microcomputer 1 recognizes that the second switch SW2 is turned on. The X contact is turned on when the front curtain of the shutter has finished running, and serves to inform the strobe light emission control circuit 5 of the strobe light emission timing.

A liquid crystal display 10 is driven by the liquid crystal display circuit 3. SW3 is a push-button type third switch for setting the aperture value. Each time the third switch SW3 is pressed, the aperture is set to the set aperture value, and when the third switch SW3 is pressed with the minimum aperture, the release aperture is released. Becomes It functions as the UP button in the setting mode.

SW4 is a push-button type fourth switch for setting the shutter speed.
Each time W4 is pressed, the set TV value is set to the high speed side, and when the fourth switch SW4 is pressed at the maximum time, it becomes the maximum time. It functions as a DOWN switch in the setting mode.

SW5 is an exposure mode setting switch of the camera, which is switched between manual, program, AV priority and TV priority each time the switch button is pressed.

SW6 is an exposure correction setting switch. When this switch button is pressed, the exposure correction setting state is set. In the exposure compensation setting state, every time the aperture setting button (UP button) of the third switch SW3 is pressed, the exposure compensation is set in the positive direction every half step. On the contrary, each time the shutter speed button (DOWN button) of the fourth switch SW4 is pressed, the exposure correction is set in the negative direction every half step.

FIG. 3 shows the fully lit state of the liquid crystal display of this embodiment, and the display contents will be described below. Reference numeral 301 is a 2-digit 7-segment for displaying the number of shots (remaining film amount), aperture value, and exposure correction amount. A counter frame 302 is turned on when the number of shots, for example, the remaining film amount is displayed. 303 is a dot when displaying the aperture value. 30
Reference numerals 4 and 305 are segments for displaying the remaining battery level, and in particular, 305 is a segment that also serves as a negative display when the exposure compensation is set.

Here, an example of the exposure compensation setting state display of the camera using the display member as shown in FIG. 3 will be described with reference to FIG. FIG. 1A shows a normal shooting state. For example, it is displayed that the number of shots is 34 and the remaining battery level is full. Here, when the exposure correction setting switch SW6 of the exposure correction setting button is pressed, the exposure correction setting state shown in FIG. 1B or 1C is obtained. Here, FIG. 1B shows a state in which the exposure correction of minus 1 step is set, and FIG. 1C shows a state in which the exposure correction of plus 0.5 step is set. . Here, in order to display the minus amount, the segment 305 inside the battery remaining amount display is turned on, and when the plus amount is displayed, the segment corresponding to the plus sign is not displayed and a positive number is expressed. To do. A desired correction value can be set by pressing the UP / DOWN buttons of the third switch SW3 and the fourth switch SW4 during the exposure correction setting state.

By using the embodiment described above,
In a camera having only a liquid crystal member capable of displaying only the battery remaining amount display and the film counter as shown in FIG. 3, it is possible to display the exposure correction amount without expanding the display member.

Second Embodiment Next, a second embodiment in which one segment for displaying the remaining battery capacity is also used as a minus display in the deviation display of the manual exposure will be described below.

As described above, conventionally, when the deviation between the exposure condition (TV, AV) set manually and the exposure condition (TV, AV) measured by the photometric member of the camera is displayed, 5 using the bar display 405 of plus /
It was to display a negative amount or use a segment dedicated to the plus / minus display 603 in FIG. 7.

Therefore, in this embodiment, when it is impossible to have a segment dedicated to the plus / minus display 603 as shown in FIG.
By using one segment of 03 also as a negative display, a deviation amount having a plus / minus value is expressed.

This embodiment will be described with reference to FIG. FIG.
(A) is a normal state display in which the first switch SW1 is OFF, and indicates, for example, that the number of shots is 34 and the remaining battery level is full. Here, during the manual exposure, when the first switch SW1 is turned on to enter the photometric state, the display is switched as shown in FIG. 1 (b) and FIG. 1 (c).

Here, FIG. 1 (b) shows that the TV value and the AV value set manually for the photometric value are one step under, and FIG. 1 (c) is set manually for the photometric value. It means that the TV value and the AV value are over 0.5 steps. As in the above-described embodiment, by using one segment of the battery display 403 for the battery remaining amount display also as the minus display in the deviation display of the manual exposure, the plus / minus amount can be obtained without the dedicated segment. Can be expressed.

Third Embodiment FIG. 4 shows a third embodiment of the present invention.

As shown in FIG. 3, in a camera that can display only the battery remaining amount display and the film counter and does not have the exposure correction mark 609, it is possible to display that the exposure correction is applied without expanding the display member. The third embodiment will be described below.

As described above, in the conventional example, when the exposure correction is not applied as shown in FIG. 9, the exposure correction mark 609 is turned off and the exposure correction is applied as shown in FIG. 9A. In this case, the exposure compensation mark 6 as shown in FIG.
This is represented by turning on 09, but such a display requires a segment dedicated to the exposure correction mark 609.

Next, this embodiment will be described with reference to FIG. FIG. 4A shows a state in which exposure compensation is not applied by turning on the film counter frame 302 as in FIG. 9A, and FIG. 4B shows the film counter frame 302 in a blinking manner. As a result, a state in which exposure correction is being applied is shown as in FIG.

As in the above-described embodiment, the frame blinks /
By using lighting for expressing the state of the camera, it is possible to display a setting state such as exposure compensation without having a dedicated segment.

This embodiment is effective for displaying the camera states such as multiple exposure, auto-bracketing, and interval termer without the dedicated segment, in addition to the exposure correction setting state.

[0056]

According to the first aspect of the present invention, in the display device of the camera, the amount having the plus value and the minus value can be easily and clearly displayed, and the conventional display can be achieved without providing another display member. It is possible to add specifications that required display.

According to the second aspect of the present invention, for example, in a camera having only a display member capable of displaying only the battery remaining amount display and the film counter, it is possible to easily display a negative value without providing another display member. You can

According to the third aspect of the invention, it is possible to display on the under side of the exposure correction amount without providing another display member.

According to the fourth aspect of the present invention, for example, the amount of exposure correction and the amount of deviation between the manual exposure photographing and the photometric means in the camera, which have plus and minus values, can be displayed. It will be easy.

According to the fifth aspect of the present invention, for example, when displaying the exposure correction amount, the deviation amount between the manual exposure photographing and the photometric means in the camera, etc., a plus value display without any discomfort can be obtained. To be

According to the sixth aspect of the present invention, by using the blinking lighting of the frame display section for expressing the state of the camera, it is possible to display a setting state such as exposure correction without having a dedicated segment. You can

[Brief description of drawings]

FIG. 1 is a plan view showing a display state of an embodiment of the invention according to the present application, (a) is a normal state, (b) is a photometric state,
(C) shows another photometric state.

FIG. 2 is a block diagram of a camera showing an embodiment of the invention according to the present application.

FIG. 3 is a plan view showing a fully lit state of an embodiment of the invention according to the present application.

4A and 4B are plan views showing a display state of another embodiment of the invention according to the present application, FIG. 4A shows a state without exposure correction, and FIG. 4C shows a state with exposure correction.

FIG. 5 is a plan view showing a fully-lit display state of the display device according to Conventional Example 1.

FIG. 6 is a plan view showing a display state of Conventional Example 1,
(A) shows a state without exposure correction, (b) shows a state with exposure correction, and (c) shows another state with exposure correction.

FIG. 7 is a plan view showing a fully lit display state of Conventional Example 2.

FIG. 8 is a plan view showing a display state of Conventional Example 2,
(A) shows a state without exposure correction, (b) shows a state with exposure correction, and (c) shows another state with exposure correction.

FIG. 9 is a plan view showing a display state of Conventional Example 2,
(A) shows the exposure compensation mark off state, and (b) shows the exposure compensation mark illuminated state.

[Explanation of symbols]

1 ... Microcomputer 2 ... Lens control circuit 3 ... Liquid crystal display circuit 4 ... Switch sense circuit 5 ... Strobe light emission control circuit 6 ... Focus detection circuit 7 ... Photometric circuit 8 ... Shutter control circuit 9 ... Feed motor control circuit 10 ... Liquid crystal display

Claims (6)

[Claims] 1. A display means having at least a minus display form, and a display control means for drivingly controlling the display means based on photographing information, the display control means causing a part of the display means to be a minus display. A display device for a camera having a minus display instruction unit. 2. The negative display instructing unit of the display control means according to claim 1, wherein the display unit is a negative display unit in which a part of a picture display unit capable of displaying the remaining battery level of a camera in stages is controlled. A display device for a camera characterized by the above. 3. The display device of a camera according to claim 2, wherein the display control means operates the minus display instructing section when the exposure correction setting is set to the under side. 4. The method according to claim 1, 2 or 3, wherein manual exposure photographing is possible, and a photometric means is provided in the camera, and the exposure condition set by manual and the exposure condition measured by the photometric means of the camera are set. The display control means operates the minus display instructing section based on the information from the counting means to display the minus deviation amount of the exposure condition on the basis of the information from the counting means. Characteristic camera display device. 5. The display control means according to claim 4, wherein the display control means displays the number of images taken by the camera, an aperture value, and an exposure correction amount in a two-digit 7 format.
Display only numbers on the numerical display consisting of segments,
A display device for a camera, in which an instruction is controlled to turn off the picture display unit. 6. The display means according to claim 1, 2, 3, 4 or 5, wherein the display means has at least a minus display form.
It has a numerical display section with a frame display section around a 2-digit 7-segment displaying a film counter, and a picture display section capable of displaying the remaining battery level of the camera in stages, and exposure compensation is set. In this case, the display device of the camera is characterized in that the minus display instructing section of the display control means instructs to blink only the frame display section of the numerical value display section.