JPH08166631A - Display device for camera - Google Patents

Abstract

PURPOSE: To provide a display device for a camera capable of clearly displaying even camera numerical information of two digits or more by making use of a two-digit numerical display part. CONSTITUTION: A display means provided with a seven-segment display part and a display control means which makes the display means display an apex value are constituted and the display part of a film counter 301 or a stop value display part is used as the display means as well. On the other hand, the apex value is of an ISO sensitivity value or a TV value and then, the display control means turns off the frame 302 of a film counter display part when information other than that on the number of sheets of photographed film or the remaining amount of a film is displayed on the display means with the apex value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera having a small number of display segments, and in particular, to a camera equipped with only a display member having no segments for displaying numerical values other than the 2-digit 7-segment, the 2-digit 7-segment The present invention relates to a display device of a camera that can be effectively used to display more camera information.

[0002]

2. Description of the Related Art A conventional example will be described with reference to FIG. Figure 9
Is an example in which two sets of four-digit seven-segments and two-digit seven-segments are available and full display is possible. The display contents of FIG. 9 will be described.

401 is a 4-digit 7-segment, which is a TV value or I
Used for SO sensitivity display. 402 is a 2-digit 7-segment and is used for displaying an AV value. Further, by using the plus / minus display 403 and the 2-digit 7-segment 402, the exposure correction amount is displayed during the exposure correction setting.

A film counter 404 displays the number of shots and the remaining number of shots together with the frame display 410. By turning off the frame display 410, the number of multiple exposures and other function numbers are displayed. A battery display 405 is used for displaying the remaining battery level. 406 is an autofocus mode display. Reference numeral 407 is a function status display of the camera during single-shot / continuous shooting of feeding and multiple-exposure. 408 is a cartridge mark state, that a film is loaded,
Flashing display indicates failure such as auto rewind. 40
An exposure correction mark 9 is displayed when exposure correction is set.

Here, FIG. 10 and FIG. 11 show examples of TV value display and ISO display using 4-digit 7-segments in the conventional example. In FIG. 10 (a), the shutter speed is 1 / FIG. 10B is a conventional example of 2000.
Is a conventional example with a shutter speed of 1/60. 11A shows a conventional example in which the ISO sensitivity is 6400, and FIG. 11B shows a conventional example in which the ISO sensitivity is 1/200.

[0006]

However, in the display device of the camera described later, in a camera having only a liquid crystal member capable of displaying only the battery level and the film counter as shown in FIG. It is difficult to display the TV value and the ISO sensitivity value that are required.

The present invention is intended to display a TV value or an ISO value during examination or operation check in a camera or the like which has only a liquid crystal member capable of displaying only a 2-digit 7 segment for displaying a battery remaining amount display and a film counter. It is also an object of the present invention to provide a display device for a camera in which the specification can be added without the need for a dedicated display without expanding the display member in some cases.

[0008]

Means and Actions for Solving the Problems A structure for achieving the object of the invention according to the present application is to have a display means having a 7-segment display portion and a display control means for displaying the apex value on the display means. Is characterized by.

According to this structure, even a camera having a display member having only two-digit seven-segment numerical display segments can effectively utilize the two-digit seven-segment display by displaying the apex value. , More camera information can be displayed.

As a concrete means of the above construction, as described in claim 2, in claim 1, the display means is also used as a film counter display section.

According to this structure, even if the camera has a display member having only a 2-digit 7-segment numeric display segment, a 2-digit or 7-segment numeric display is provided for camera development, examination during shooting, operation check, etc. It is possible to add specifications without the need for any dedicated display where segments are required.

As another concrete means of the above-mentioned constitution,
As described in claim 3, in claim 1, the display means is also used as an aperture value display section.

According to this structure, even in a camera having a display member having only a 2-digit 7-segment numerical value display segment for displaying an aperture value, a TV value or an ISO value is displayed during examination at the time of shooting or operation check. Is possible.

Further, in claim 1, 2 or 3, the apex value is an ISO sensitivity value.

According to this structure, even if the display member has only the numerical display segment of only the two-digit 7-segment, the ISO
The sensitivity value can be displayed in two digits.

Further, in claim 1, 2 or 3,
The apex value is a TV value.

According to this structure, the TV value can be displayed in two digits even with the display member having only the two-digit seven-segment numerical value display segment.

According to a second aspect of the present invention, the display control means turns off the frame of the film counter display section when the display means displays the information other than the number of shots and the remaining film amount as an apex value. To do.

With this configuration, when the aperture value, particularly the TV value based on the apex value and the ISO sensitivity value based on the apex value, are displayed, the display contents can be distinguished, and an intuitive display can be realized.

Another structure for achieving the object of the invention according to the present application is, as described in claim 7, in which the display control means is a display means having first and second display portions each composed of 7 segments. And a display control means for displaying a TV value of up to 4 digits on the display means. When the shutter speed is one thousand digits or the shutter speed is one hundred digits, the first display means is provided. It is characterized in that the display part of is displayed a numerical value of thousands or hundreds, and a part of the second display is turned on to recognize the display of thousands or hundreds. .

According to this structure, it is possible to display the TV value of a thousand digit or a hundred digit which can be simply and intuitively understood by two digit seven segments.

Further, as described in claim 8, claim 7
In the above, the display control means displays the denominator value on the first display part and the second display part when the shutter speed is two digits or less, and when the shutter speed is one digit display, 1
It is characterized in that the shutter time is displayed as a numerical value on the display section of (1) and a part of the segment is turned on to display the second on the second display section.

According to this structure, it is possible to display the TV value of one digit or fractional value which can be simply and intuitively understood with two digits of seven segments.

Still another structure for realizing the object of the invention according to the present application is, as described in claim 9, a display means having first and second display parts of 7-segment structure, and the display means. Display control means for displaying an ISO sensitivity value of up to 4 digits, and the display control means displays only the hundreds and thousands of the ISO sensitivity value on the display means. According to this configuration, it is possible to display the ISO sensitivity value that can be simply and intuitively understood by the 2-digit 7-segment.

[0025]

1 to 6 show an embodiment of the present invention.

<First Embodiment> FIG. 2 is a block diagram showing the electrical control of the camera according to the first embodiment of the present invention.

Reference numeral 1 is a microcomputer for controlling the movement of each part of the camera. A lens control circuit 2 drives and controls a focus adjusting motor and a diaphragm blade controlling motor of a photographing lens (not shown). Lens control circuit 2
Performs serial communication via DBUS while receiving the LCOM signal from the microcomputer 1. 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 the liquid crystal display 10 for notifying the photographer of the remaining battery power of the camera and the number of images taken. The liquid crystal display circuit 3 is
While receiving the DPCOM signal from the microcomputer 1, serial communication is performed via DBUS. 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 the respective 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. Further, a DX reading contact piece is connected to the switch sense circuit 4 to read the DX code of the film.

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 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 an 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 1 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 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) in accordance with a control signal from the microcomputer 1.

A feeding circuit 9 feeds the film, for example, winding, rewinding, etc., according to a control signal from the microcomputer 1.

SW1 is a push-button type first switch for starting the operation of the camera. When the microcomputer 1 recognizes that the first switch SW1 is turned on, it starts photometry, distance measurement and display. SW2 is a second switch that works in conjunction with the release button of the camera.
When the microcomputer 1 recognizes that the switch SW2 has been turned on, the exposure operation is started.

The X contact is turned on at the timing when the front curtain of the shutter is completely driven, and serves to inform the strobe light emission control circuit 5 of the timing of strobe light emission.

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 the third switch SW3 is pressed at the minimum aperture. It becomes an open aperture. UP in setting mode
Acts as a button.

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. In the setting mode, it functions as a DOWN button.

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

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 film counter consisting of two-digit seven segments for displaying the number of shots, for example, the remaining amount of film and aperture value. A film counter frame 302 is turned on when the number of images to be taken, for example, the remaining film amount is displayed. 303 is a dot when displaying the aperture value. 304 and 305 are segments for displaying the remaining battery level.

Here, an example of displaying the TV value and ISO sensitivity value by the apex value of the camera using the display member as shown in FIG. 3 will be described with reference to FIG.

First, the display of the TV value by the apex display will be described. FIG. 1A shows a normal shooting state,
For example, it indicates that the number of shots is 11 and the remaining battery level is full. Further, in FIG. 1B, the number of shots is 6
A sheet indicates that the battery level is full.
FIG. 1C shows a state in which the aperture value is displayed,
The aperture value is 5.6.

In the conventional example shown in FIG. 10A, 1/2000 is displayed as a 4-digit 7-segment 401.
FIG. 1D is an example in which an apex value of 1/2000 is displayed by a 2-digit 7-segment 301. In the conventional example of FIG. 10B, 1/60 is displayed as a 4-digit 7-segment 401, whereas in FIG. 1E, the apex value is 1/6.
This is an example in which 0 is displayed as a 2-digit 7 segment 301. T
The relationship between the V value and the apex value is shown in FIG.

Next, in the conventional example shown in FIG. 11A for explaining the display of the ISO sensitivity value by the apex display, ISO is used.
While 64000 is displayed as a 4-digit 7-segment 401, FIG. 1D shows the apec value of ISO6400.
Is an example in which is displayed as a 2-digit 7-segment 301. FIG.
In the conventional example of FIG. 1 (b), the ISO 200 is displayed as a 4-digit 7-segment 401, whereas in FIG. 1 (e), an ISO 200 is displayed as a 2-digit 7-segment 301 as an apex value. The relationship between the ISO sensitivity value and the apex value is shown in FIG.

Further, in the present embodiment, when the film counter is displayed on the two-digit 7-segment, the frame 302 of the film counter is turned on and the aperture value, particularly the TV value according to the apex value and the ISO sensitivity value according to the apex value are displayed. In the case of displaying, in order to distinguish the display contents, the frame 302 is turned off.

As described above, according to the present invention, in a camera having only a liquid crystal member capable of displaying only a two-digit 7 segment 301 for displaying a battery remaining amount display and a film counter as shown in FIG. It is possible to display TV values and ISO values during examination and operation check.

<Second Embodiment> FIG. 7 shows the second embodiment of the present invention.

In the first embodiment, a 2-digit 7-segment 30
1, the TV value is displayed using the apex value, whereas in the present embodiment, it is possible to intuitively start from the 2-digit 7-segment 301 without looking at the table (FIG. 5) showing the relationship between the TV value and the apex value. It is configured so that the TV value can be read. That is,
FIG. 7 shows an example of the simplified display.

The features of this simplified display will be described below.

(1) When the time is a thousand digit second such as 2000 or 1000, the upper segment of the two-digit display segment displays the numerical value of the thousand digit as it is, and the lower digit is the segment f <Fig. Only the> symbol is illuminated to indicate the thousands digit.

(2) When the time is a hundred digit second such as 500 or 125, the upper segment of the two-digit display segment displays the numerical value of the hundred digit as it is, and the lower digit is the g of the segment.
Only <Figure 4> is illuminated to indicate the hundreds digit.

(3) When the second time is 1/60 to 1/2, it is displayed as in the conventional example.

(4) When the time is 1 to 8 seconds, the time is displayed numerically in the upper segment of the 2-digit display segment,
In order to express "second" in the lower segment, " ¹¹ (segment a, e lights up)" or "S (segment f, a,
(g, d, c lights) ”is displayed. If the simple TV value display described above is used, it is possible to intuitively understand the TV value display with the 2-digit 7-segment 301.

<Third Embodiment> FIG. 8 is a diagram showing a third embodiment of the present invention.

In the first embodiment, a 2-digit 7-segment 30
1, the ISO sensitivity value is displayed using the apex value, whereas in the present embodiment, the two-digit 7 is intuitively displayed without looking at the table (FIG. 6) showing the relationship between the ISO sensitivity value and the apex value.
The ISO sensitivity is read from the segment 301, and an example of the simplified display is shown in FIG.

Here, the display will be considered only when the sensitivity is ISO 100 or more. ISO sensitivity of 100 or more is 1
At every step, both the tens digit and the ones digit are zero. Therefore, in this embodiment, as shown in FIG. 8, a numerical value of 100 digits or more is displayed in the 2-digit 7-segment 301. If the ISO sensitivity display described above is used, it is possible to intuitively understand the ISO sensitivity value display with the 2-digit 7-segment 301.

[0058]

According to the invention described in claim 1, even a camera having a display member having only two-digit seven-segment numerical display segments can display two-digit seven-segments by displaying the apex value. It can be effectively used and more camera information can be displayed.

According to the second aspect of the invention, the two-digit 7
Numerical display of only segments Even if the camera has a display member that has only segments, it is necessary to have any special display that requires a numerical display segment of 7 segments of 2 digits or more in camera development, examination at the time of shooting, operation check, etc. It is possible to add specifications without doing this.

According to the third aspect of the present invention, even in a camera having a display member which has only a 2-digit 7-segment numerical value display segment for displaying an aperture value, a TV value can be used in consideration during shooting, operation check, etc. And ISO value can be displayed.

According to the invention described in claim 4, the two-digit 7
Numerical display of only segment The ISO sensitivity value can be displayed by the display member having only segment.

According to the invention described in claim 5, the two-digit 7
Numerical display of only the segment The TV value can be displayed on the display member having only the segment.

According to the invention described in claim 6, the aperture value,
Especially TV value by Apex value, I by Apex value
When the SO sensitivity value is displayed, it is possible to distinguish the display content, and it is possible to realize intuitive display.

According to the invention described in claim 7, two-digit seven
It is possible to display TV values in thousands or hundreds of digits that can be simply and intuitively understood in a segment.

According to the invention as defined in claim 8, the two-digit 7
It is possible to display the TV value of a single digit or fractional value that can be simply and intuitively understood in a segment.

According to the invention described in claim 9, the two-digit 7
It is possible to display ISO sensitivity values that can be understood simply and intuitively in segments.

[Brief description of drawings]

FIG. 1 is a plan view showing a display state of a first embodiment according to the present invention, in which (a) is a normal shooting state, (b) is another normal shooting state, and (c) is an aperture value display state. (D) shows the display state of the TV value or the apex value of the ISO sensitivity value, and (e) shows the display state of the apex value of the TV value or the ISO sensitivity value.

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

FIG. 3 is a plan view showing a fully lit state of the display device according to the first embodiment of the present invention.

FIG. 4 is a layout diagram of 7 segments showing a first embodiment according to the present invention.

FIG. 5 is a chart showing a relationship between a TV value and an apex value.

FIG. 6 is a chart showing the relationship between ISO sensitivity values and apex values.

FIG. 7 is a chart showing a simplified display of TV values in the second embodiment.

FIG. 8 is a chart showing a simplified display of ISO sensitivity values according to a third embodiment.

FIG. 9 is a plan view showing a full lighting state of a conventional display device.

10 is a plan view showing an operation state of the conventional example shown in FIG. 9, (a) showing a TV value display state, and (b) showing another TV value display state.

FIG. 11 is a plan view showing a display state of a second conventional example,
(A) shows the display state of the ISO sensitivity value, and (b) shows another display state of the ISO sensitivity value.

[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 (9)

[Claims] 1. A display device for a camera, comprising: a display unit having a 7-segment display unit; and a display control unit for displaying the apex value on the display unit. 2. A display device for a camera according to claim 1, wherein the display means is also used as a film counter display section. 3. A display device for a camera according to claim 1, wherein the display means is also used as an aperture value display section. 4. The camera display device according to claim 1, wherein the apex value is an ISO sensitivity value. 5. The display device of a camera according to claim 1, wherein the apex value is a TV value. 6. The display control means according to claim 2, wherein the display counter means turns off the frame of the film counter display portion when the display means displays information other than the number of shots and the remaining film amount as an apex value. Camera display device. 7. The display control means has a display means having first and second display portions each composed of 7 segments, and a display control means for displaying a TV value of up to 4 digits on the display means. However, when the shutter speed is one thousand digits or when the shutter speed is one hundred digits, the first display portion of the display means displays a thousand digit value or a hundred digit value, and the second display portion. A display device for a camera, characterized in that a part of is displayed to recognize that it is a thousand digit display or a hundred digit display. 8. The display control means according to claim 7, when the shutter speed is a fractional display of two digits or less, the display control means displays the denominator numerical values on the first display part and the second display part, and the shutter time is In the case of a one-digit display, the shutter display is numerically displayed on the first display unit, and a part of the segment is turned on to display the second on the second display unit. apparatus. 9. A display means having first and second display parts each having a 7-segment structure, and a maximum four-digit IS on the display means.
A display device for a camera, comprising: display control means for displaying an O sensitivity value, wherein the display control means displays only the hundreds and thousands of the ISO sensitivity value on the display means.