JPS62272769A - Image pickup device - Google Patents

Abstract

PURPOSE:To reduce power comsumption by stopping a viewfinder display device during reproduction operation, thereby informing an operator of that reproduction is going. CONSTITUTION:A mode switching switch 26 is in the reproduction mode, and this causes all the inputs of an arithmetic control circuit 108, a photometry circuit 107, a release circuit 111, a strobo interface circuit 112, exposure correction circuit 113, etc. are prohibited by means of a signal inputted from a mode switching circuit 110. At the same time, a switch 116 is turned off to disconnect the supply of power from a power source 120 to a viewfinder display device 114 and stop the display. Amid such a reproduction mode as above, when a operator looks in a viewfinder 22, no viewfinder-display showing the visual contour of an object can be seen. However, since there is no image pickup operation in the reproduction operation operating, this is harmless, furthermore the operator can notice the reproduction mode is going on because of the lack of the display in the viewfinder 22.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention has a first display means in the viewfinder, a second display means is disposed outside the main body of the device, and a camera for photographing and playback. The present invention relates to an imaging device that can be used alternatively.

[Prior Art] In most imaging devices, a display means is provided in the finder in order to look through the finder and frame during shooting and at the same time check the brightness of the subject, shooting conditions, etc.

On the other hand, an imaging device that has not only a recording function but also a playback function by itself or by connecting an adapter can be considered.

In such an imaging device that has both recording and playback functions, the display means in the viewfinder displays the
Only the necessary information is displayed, and this information is not only unnecessary during playback, but also because playback tends to last longer than shooting, which shortens the battery life of battery-operated cameras. Furthermore, continuous display operations shorten the life of display components.

[Problems to be Solved by the Invention] Therefore, the present invention has been made with attention to these points, and its purpose is to improve the display in the viewfinder during playback operation in the above-mentioned type of imaging device. By avoiding unnecessary information display, we can prevent the display element from deteriorating its lifespan, and by saving power, we can extend the operating time for the same battery when using batteries. An object of the present invention is to provide an imaging device that provides the following features.

[Means for Solving the Problems] In order to achieve such an object, the first embodiment of the present invention has a first display means in the viewfinder and a second display means arranged outside the main body of the device. an imaging device capable of selectively performing shooting and playback, comprising: means for instructing a playback mode; and means for prohibiting display on the first display means when the playback mode is instructed. It is characterized by:

A second aspect of the present invention provides an imaging apparatus that has a first display means in the viewfinder, a second display means outside the main body of the apparatus, and is capable of performing shooting and playback selectively. means for detecting whether the power source is a battery; means for instructing a playback mode; and means for prohibiting display on the first display means only when the power source is a battery and the playback mode is instructed. It is characterized by having the following.

A third aspect of the present invention provides an imaging apparatus that has a first display means in the viewfinder, a second display means outside the main body of the apparatus, and is capable of selectively performing shooting and playback. means for detecting whether the power source is a battery; means for instructing a playback mode; and means for prohibiting display on the first display means only when the power source is a battery and the playback mode is instructed. It is characterized by having the following.

A fourth aspect of the present invention provides an imaging apparatus that has a first display means in the finder, a second display means outside the main body of the apparatus, and is capable of selectively performing shooting and playback. means for detecting whether the power source is a battery; means for instructing a playback mode; and means for prohibiting display on the first display means only when the power source is a battery and the playback mode is instructed. and when prompted for playback mode,
The present invention is characterized in that it includes means for displaying that the second display means is in playback mode.

[Function] According to the present invention, by stopping the viewfinder display during playback, it is possible to notify the operator that playback is in progress, save power, and extend the life of the display element. also contributes.

[Example] Hereinafter, the present invention will be described in detail with reference to the drawings.

The outline of the appearance of the imaging device of this example is shown.

In FIG. 1, 21 is a main body, 22 is a finder through which a subject image is viewed, and 23 is a lens.

Reference numeral 24 denotes an external display disposed, for example, in the warship portion of the main body 21, and is composed of a display such as an LCD. 25 is a release button, and when this release button 25 is pressed,
Shooting begins.

Reference numeral 26 denotes a mode changeover switch for changing the shooting/playback mode. 27 is an exposure correction operating member. 28 is a strobe interface. 29 is an external display mode changeover switch.

FIG. 2 shows that when looking through the finder 22 shown in FIG.
This is an example of the display that can be seen within the field of view. In the figure, 1 is the subject display area, 2 is the aperture value display area that is displayed on a 7-segment display element for two digits and a 1-dot display element, and 3 is a 7-segment display element.
The segment display element displays a reciprocal number of one hour of shutter time, which is displayed in four digits, and 4 is a mark display section indicating that a strobe is connected to the strobe interface 28.

FIG. 3 is an example of the display of the external display 24 shown in FIG. 1, where 10.12 and 14 are display parts each showing the 1st day of the month and the year using 7 segments of 2 digits. . 11. 13 and 15 are display units that display M, D, and Y indicating the 1st day of the month and the year, respectively. Reference numeral 16 denotes a display section that shows the numerical value of the magnification of exposure correction.

FIG. 4 shows the electric circuit of this embodiment.

In FIG. 4, 100 is an imaging optical system 101.

105 is a beam splitter (BS), 102 is an image sensor such as a CCO, 103 is a signal processing circuit, and 104 is a recording circuit. 107 is a photometric circuit, 108 is an arithmetic control circuit, +
09 is a clock circuit for displaying the year, month, date, etc.

Reference numeral 110 denotes a mode switching circuit that generates a mode switching input using the mode switching switch 26 shown in the first diagram.

111 is a release circuit that generates a release signal in response to the release button 25 shown in the first diagram.

+12 is an interface circuit that interfaces with an external strobe device via the strobe interface 28 shown in the first diagram.

Reference numeral 113 denotes an exposure compensation circuit that generates a multiple output for exposure compensation in response to an input from the exposure compensation operation member 27 shown in the first diagram.

+14 is a display device in the finder 22 having display sections 2 to 4 shown in FIG.

116 is a switch that turns on/off the power supply from the power supply 120 to the finder display +14 in accordance with the display control signal from the arithmetic control circuit 108.

117 is an aperture, 118 is a shutter, and the optical system 100
The CGD 102 is placed in the optical path from the CGD 102 to the CGD 102 .

119 is a reproduction signal output from the signal processing circuit 103.

121 is connected to the recording circuit 104, and the recording medium 122
This is a recording/playback head that performs recording/playback for.

Reference numeral 123 denotes a switching control circuit for switching the display form of the external display 29 in accordance with the switch output of the external display mode changeover switch 29.

The operation of the configuration of the embodiment of the present invention shown above will be described below.

(i) Shooting mode, First, the shooting mode will be explained.

When the mode changeover switch 26 shown in FIG.
A part of the light from the object is guided to the photometry circuit +07 via beam splitters +01 and 105, and the photometry output obtained here is input to the arithmetic control circuit. The arithmetic control circuit 108 determines the shutter speed and aperture based on this photometric information and human power from the strobe interface circuit +12, and sends a signal to the finder display 114 for displaying the shutter speed and aperture on the display sections 2 to 4. send.

Furthermore, the switch 116 is turned on by the display control signal from the arithmetic control circuit 108, and the finder display +1 is turned on.
4 from a power source 120, so that a viewfinder display as shown in FIG. 2 can be performed.

The external display 24 displays an external display as shown in FIG. 3 based on information from the exposure correction circuit 113 and the clock circuit 109.

In this state, when the release button 25 is pressed, the release signal from the release circuit 111 is sent to the arithmetic control circuit +08.
is man-powered. The calculation control circuit 108 controls the shutter 118 based on the calculated shutter speed and aperture value.
Then, the aperture +17 is controlled to expose the image sensor 102.

The exposure output is supplied to the signal processing circuit +03 for processing.

In this case, the signal processing circuit 103 and the recording circuit 104 are in the photographing mode by the control signal from the arithmetic control circuit 108.

The recording circuit 104 records the exposure output on the recording medium 122 via the recording/reproducing head 121 .

(iil playback mode Next, the playback mode will be explained.

In this case, the mode changeover switch 26 shown in FIG.
In this case, all inputs to the photometry circuit 107, the release circuit 111, the strobe interface circuit 112, the exposure compensation circuit 113, etc. are prohibited, and the switch +16 is turned off to cut off the power supply from the power supply 120 to the viewfinder display 114. Stop its display.

Furthermore, when the display on the external display 24 is being reproduced, for example, as shown in FIG.
and 16 are deenergized, rPLAYJ is displayed using 4 digits of the 7-segment display elements of display section 10 and 12, and rPLAYJ is displayed using 2 digits of 7-segment display elements of display section 14 during playback. Display frame number.

At the same time, the signal processing circuit +03 and the recording circuit 10
4 in the playback mode, the recording circuit 104 reads the recording medium 1.
The reproduced signal picked up by the head 121 from the signal IA3. ! I! Supplied to circuit 103. This circuit 103 allows pickup signals such as NTSC and RGB.
The video signal is converted into a video signal such as , and outputted as a reproduced signal 119.

In this playback mode, when looking through the finder 22, no viewfinder display on the outer periphery of the subject's field of view can be seen.

However, since there is no shooting operation in this playback mode, there is no actual harm caused by the non-display, and the operator cannot use the viewfinder 22
You can tell that it is in playback mode because the display inside is gone.

Next, FIG. 6 shows an example of the display control procedure in the recording mode and reproduction mode in the arithmetic control circuit +08.

First, in step S1, it is determined whether the mode changeover switch 26 is in the shooting mode or the playback mode. When the mode is playback mode, the process proceeds to step S2, and when the mode is shooting mode, the process proceeds to step S7.

In the playback mode, the process proceeds to step S2, where the signal processing circuit 102 and the recording circuit 103 are set to the playback mode, and then in step S3, the photometry circuit 107, release circuit 111, strobe interface circuit 112, exposure compensation circuit 113, etc. All human power to the arithmetic control circuit 108 from circuits related to this is prohibited.

Further, in step S3, the switch 116 is turned off to cut off the power supply from the power supply 120 to the finder display 114, thereby stopping the display.

In step S4, the display on the external display 24 is set to playback mode, and a display rPLA as shown in FIG.
YJ is performed on the display sections 10 and 12, and the frame number is displayed on the display section 14. Remaining display section 11.
13. Do not display 15 and 16.

Next, the program enters subroutine S6 and performs normal playback processing.

On the other hand, when in the photographing mode, the process proceeds to step S7, where the signal processing circuit +02 and the recording circuit 103 are switched to the photographing mode.

In this state, in step S8, the photometry circuit 107
The arithmetic control circuit +08 accepts human power from the release circuit 111, the flash interface circuit 112, and the exposure compensation circuit +13.

Therefore, in the next step S9, the shutter speed and aperture are determined according to the output from the photometry circuit 107.

In step SIO, the switch LIE is turned on to enable the finder display +14. Thereby, in step Sll, a display as shown in FIG. 2 is displayed on the display +111 together with a display of the subject.

In step S12, the external display 24 displays a recording mode display as shown in FIG.

In the next step S13, when it is detected that the release button 25 has been pressed, the process immediately enters a recording subroutine in step S14 to perform recording processing.

[Effects of the Invention] As explained above, according to the present invention, by stopping the finder display during playback, it is possible to notify the operator that playback is in progress and to save power. It also contributes to extending the life of the element.

In particular, when considering only from the viewpoint of power saving, the viewfinder display may be stopped only while the battery is operating.

In that case, it is sufficient to connect a switch in parallel with the switch 116 shown in FIG. 4, which is turned off when the battery is operated and turned on when the commercial power supply is operated, and this can be easily realized.

In the above description, the case of still image shooting and the use of an optical viewfinder has been explained, but the present invention is not limited to such cases, but can also be applied to the case of moving image shooting or the case of using an electronic viewfinder. It is clear that it can be applied effectively.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the outline of the external appearance of an embodiment of the imaging device of the present invention, Fig. 2 is a diagram showing an example of display contents when looking through the finder in shooting mode, and Fig. 3 is in shooting mode. 4 is an electric circuit diagram showing an embodiment of the present invention; FIG. 5 is a diagram showing an example of display content on the external display during playback mode; FIG. 6 is an electronic flowchart illustrating an example of a control procedure according to an embodiment of the present invention. 21... Main body, 22... Finder, 23... Lens, 24... External display, 25... Release button, 26... Shooting/playback mode selection switch, 27...
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Claims (1)

[Scope of Claims] 1) In an imaging device that has a first display means in a viewfinder, a second display means arranged outside the device body, and can selectively perform shooting and playback, a playback mode is provided. An imaging apparatus comprising: means for instructing a reproduction mode; and means for prohibiting display on the first display means when a reproduction mode is instructed. 2) In an imaging device that has a first display means in the viewfinder, a second display means arranged outside the main body of the device, and can selectively perform shooting and playback, means for instructing a playback mode; means for prohibiting display on the first display means when a playback mode is instructed, and means for displaying, by the second display means, that the playback mode is active when a playback mode is instructed. An imaging device characterized by: 3) In an imaging device that has a first display means in the viewfinder, a second display means arranged outside the main body of the device, and can selectively perform shooting and playback, the power source of the device is a battery. means for detecting whether or not the playback mode is selected; means for instructing a playback mode; and means for prohibiting display on the first display means only when the power source is a battery and the playback mode is instructed. An imaging device characterized by: 4) In an imaging device that has a first display means in the viewfinder, a second display means outside the main body of the device, and can selectively perform shooting and playback, the power source of the device is a battery. means for detecting whether or not the playback mode is enabled; means for instructing the playback mode; means for prohibiting display on the first display means only when the power source is a battery and the playback mode is instructed; An imaging apparatus characterized by comprising: means for displaying, by the second display means, that the mode is a playback mode when a mode is instructed.