JPS5987440A - Strobing device for automatic dimming - Google Patents

Abstract

PURPOSE:To obtain a proper picture by providing the titled device with an information display device having respective steps deciding the setting operation mode of a strobing device, deciding the attachment of a close-up photography sensor and alarming the erase of the display of an F value. CONSTITUTION:Signals from an F-value input device 3, a film sensitivity input device 4, an operation mode detecting device 5, and a close-up photography sensor detecting device 6 are supplied to a microcomputer 1, which outputs control signals to the information display device 2 and a buzzer device 7. If the output of the close-up photography detecting device 6 corresponds to the attachment of the close-up photography sensor when the output of the operation mode detecting device 5 is a manual operation mode, the display on an F-value displaying part 2b is erased from the information display device 2 and an operation mode display 2c is turned on and off. The switching to an automatic dimming mode is accelerated by actuating the automatic dimming mode display and the manual operation mode display alternately or generating an alarm tone.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is equipped with a microcomputer, inputs photographing information signals such as film sensitivity, F-number, and operation mode to this microcomputer, and calculates the exposure state. The present invention relates to an automatic light control flash device that can notify the following using an information display device driven by the above-mentioned microcomputer, and is equipped with the above-mentioned display device, which is extremely effective when using a close-up sensor, which is an auxiliary device for taking close-up shots. This is for automatic flash control.

Conventional configurations and their problems In recent years, microcomputers have been installed, and divine photographic information is input into this microcomputer, the exposure conditions are calculated, and the results are displayed by the information display device driven by the microcomputer. An automatic light control flash device that can notify the user has been put into practical use.

In addition, when such a strobe device is used for close-up photography, when a close-up sensor, which is an auxiliary photography device, is attached, if the device body is set to automatic light control mode, it will detect +7Ly and change the displayed F-value to automatically ÷. It also has a configuration that allows it to increase at an appropriate value of 1.

For this reason, there is no need to perform the complicated exposure division that was previously required when taking close-up shots; simply attaching the close-up sensor and setting the lens to the displayed F-number allows you to take close-up shots with the appropriate exposure conditions. can be done. However, when the main body of the apparatus is set to a manual operation mode in which dimming cannot be performed, unlike the case described above, not only the displayed F value but also other display values do not change at all.

Therefore, if the operating mode of the strobe device is set incorrectly or forgotten, the conventional device has the problem that close-up photography under proper exposure conditions cannot be performed.

In other words, for close-up photography in manual operation mode, -1 if switching to automatic light control mode or not switching to automatic light control mode;
Despite the need to perform accurate exposure calculations and appropriately control the F-number, luminous intensity, etc., the above-mentioned conventional device does not change its display state at all, and as a result, does not switch to automatic light control mode. If you take close-up shots based on just one display of information without taking proper precautions, you will inevitably have a problem with the shooting failure.

Looking at it from another perspective, the above-mentioned conventional device is capable of performing proper shooting operations as long as the shooting is performed according to the information displayed on the information display device.
Despite the fact that a microcomputer processes information and displays the results in order to achieve the major feature of being able to wait for υ seconds, when the close-up sensor is attached in dual manual operation mode, In this case, proper photographing operation cannot be expected even if the display is followed, and the display in such a case can be considered to be an incorrect display operation, and there is a problem that the device cannot be said to be fully completed. That means you are doing it.

Purpose of the Invention The present invention has been made in consideration of the above-mentioned points.
If a close-up sensor is attached in manual operation mode, the F value display will disappear.

The purpose of the present invention is to provide an automatic light control flash device equipped with a microcomputer and equipped with an information display device capable of informing that the F value must be arbitrarily set.

Another object of the present invention is to turn off the F value display and blink the operation mode display of the strobe device when a close-up sensor is attached in the manual operation mode.

In other words, it is equipped with a microcomputer that is equipped with an information display device that can alternately display automatic dimming mode and manual operation mode, and generate a warning sound to prompt switching to automatic dimming mode. An object of the present invention is to provide an automatic flash control flash device.

Structure of the Invention The automatic light control strobe device according to the present invention includes a first step of determining a set operation mode of the strobe device;
A second step is selected when it is determined that the manual operation mode is in the step, and the second step is to determine whether or not a close-up sensor is attached, and when it is determined that the close-up sensor is attached in the second step, at least F and a warning step including a third step of erasing the value display.

DESCRIPTION OF THE EMBODIMENTS FIG. 1 is a schematic diagram for explaining the state of signal transmission and reception to and from the automatic light control strobe device 171 of the present invention. 3 is an F value input device composed of, for example, a shift switch; 4 is a film sensitivity input device composed of, for example, a shift switch; and 5 is a set of whether the strobe device itself is in automatic light control mode or manual operation mode. 6 is a close-up sensor detection device that detects whether a close-up sensor is attached to the strobe device body, and 6 is a close-up sensor detection device that detects whether a close-up sensor is attached to the strobe device body. The buzzer devices used are shown in detail.

As is clear from FIG. 1, signals from DL, F value input device 3, film sensitivity input device 4, operating mode detection device 5, and close-up sensor detection device 6 are supplied to the microcomputer 1. From there, a control signal is output to the information display device 2 and the buzzer device 7.

That is, the microcomputer 1 processes signals from an F value input device or the like that are input to itself, and outputs the results as control signals for controlling the operation of the information display device 2 or the like.

In addition, the information display device indicated by figure number 2 in FIG.
As shown in a plan view of an example in FIG. 2, for example, a liquid crystal display panel includes a film sensitivity display section 2a, an F position display section 2b, an operation mode display section 2c, and a photographable distance display section 2.
There is no need to explain in detail that it is configured with d, etc.

As described above, the automatic light control strobe device according to the present invention has the advantage that when the output from the operation mode detection device 6 is in the manual operation mode, the output from the close-up sensor detection device 6 corresponds to when the close-up sensor is attached. For example, the display of at least the F position display section 2b is made to disappear from the information display device 2 as shown in FIG. The microcomputer 1 that receives the signal from the close-up sensor detection device 6 and controls the operation of the F position display section 2b of the information display device 2 will be explained with reference to a flowchart.

FIG. 3 η'': A flowchart of a portion of an embodiment of the microcomputer 1 used in the automatic light control flash device according to the present invention to control the operation of the information display device 2. 2 is a flowchart of a drive system by the microcomputer 1.

This flowchart will be explained below.

Now, the microcomputer 1 controls the operation of the information display device 2:1jl)
When it is possible to fall, step 8 is selected and the operation of the drive system of the information display device 2 is started.

When the microcomputer 1 selects step 8, it proceeds to step 9, where it receives setting input from the film sensitivity detection device 4.

(7) R. If there is no manual setting from the film sensitivity detection device 4, step 1 will be immediately activated to display the film sensitivity according to the previous setting. 11 is selected c1. The film sensitivity display section 2a of the information display circuit 2 is driven.

On the other hand, if there is a setting input from the film sensitivity detection device 4, that is, if there is a new setting operation for film sensitivity using a shift switch or the like (4. Through step 10, which shifts by 172, step 11 is selected.

In this case, step 11 shifts the film sensitivity display section 2d to sequentially display increasing film sensitivity values.
will be driven.

-1- The film sensitivity value is displayed by the operation as described.
Then, step 12 is selected, and now 1g is F.
Receives human power from the value input device 3.

If there is no input from the F-number input device 3, that is, if no new F-number setting operation is performed using the shift switch, etc., the steering knob 14 immediately starts the above-mentioned F-number setting operation. If this is done, step 14 is selected via step 13, which sequentially shifts the F value.

Step 14 is a step of determining whether the strobe device is in a state in which it can perform automatic light adjustment operation, that is, in auto mode, or in a state in which it cannot perform automatic light control operation, that is, in manual mode, by receiving the output from the operation mode production device 5. and set to auto mode, step 1
5 is set to manual mode, step 19 will be selected.

Step 15 is the operation mode display section 2 of the information display device 2.
In this case, since the auto mode is set, if step 16 is selected, a display such as AUTQ will be displayed.

When step 15 is completed, step 16 is selected next, and the input from the close-up sensor detection device 6 is determined.

If the determination in step 16 is that the close-up sensor is attached, step 17 is selected and steps 12' and 13 described above are performed.

The F value that was set to be displayed has increased by 4EV, and the selection in step 18 increases the F value by 4E'V.
It will be displayed in an elevated state.

Further, if the determination in step 16 is that the close-up sensor is not attached, step 18 is immediately selected without going through step 17, and step 12.
13, the F value that has been set will be displayed.

On the other hand, if it is determined in step 14 that the mode is manual operation mode, step 19 is selected, and like step 16, the close-up sensor detection device 6
Decisions will be made based on input from the public.

If the determination made in step 19 is that the close-up sensor is not attached, step 20 is selected.

This step 20 is to drive the operation mode display section 2c of the information display device 2 in the same manner as step 15 described above, and in this case, if the device is in manual mode, a display such as M is displayed on the device. You will have to do it.

Next, step 21 for driving the F value display section 2b is selected, and the F value set in the previous step 12.13 is displayed.

That is, step 20.21 above is replaced by step 14.19.
This can be considered to be the manual mode and the state in which normal manual operations can be performed without the close-up sensor attached.Of course, the shooting operation according to the display in this case is the appropriate operation. We can expect this.

On the other hand, if it is determined in step 19 that the close-up sensor is attached, step 22 is selected, the driving state of the F value display section 2b is controlled, and the F value that had been displayed until then is erased. It will be cleaned up.

In manual mode, if the close-up sensor is installed, the F value must be set arbitrarily to ensure that the flash of the strobe device is not interrupted midway, or to take into consideration the reflectance of the subject, etc. Even with regular 4EV loading as usual, proper shooting operation cannot be expected. That is, it goes without saying that even if regular display is performed, it is meaningless and useless.

In other words, it can be regarded as a step of performing an operation to passively satisfy the condition that the photographing operation according to the display contents of the information display device 2 is appropriate.

Upon completion of step 22 as described above, step 23 is then selected in such embodiments.

This step 23, like steps 15 and 20, controls the driving of the operation mode display section 2C of the information display device 2.

However, the drive control state is different from that in steps 16 and 20 in which, for example, the display content AUTQ or M is displayed alone, whereas in step 23
, the display contents of the other party are displayed alternately.

Needless to say, such an operation serves to make the photographer more aware of the operating mode status, and in this case, it is possible to notify the user of the need to switch from the manual operating mode to the auto mode. Furthermore, the flowchart in the embodiment of the present invention is as follows.
As is clear from the figure, after step 23, the process proceeds to step 24.

Step 24 is a step to further strengthen the arbitrary setting of the F value and change of the operation mode in steps 22 and 23 described above, and to generate a warning sound in order to make the photographer aware of the change. Ba,
The photographer can very easily recognize that some kind of operation is required, such as arbitrary setting of the F value.

That is, steps 22, 23, and 24 in FIG. 3 can be regarded as warning steps without prompting any operation when using the close-up sensor in manual mode, and therefore, erroneous photography is prevented. Most of this can be prevented.

Effects of the Invention The automatic light control strobe device according to the present invention has a means that operates even when set to the manual operation mode, that is, a means for receiving an input signal from a close-up sensor detection device and determining whether or not a close-up sensor is attached. According to the determination result of this means, if the close-up sensor is attached, the information display device is equipped with at least a means for erasing the previously displayed F value. This has the effect of eliminating the inconvenience of not being able to obtain an appropriate photograph even if the photograph is taken in accordance with the displayed contents.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of the microcomputer and its surroundings in an embodiment of the automatic flash control flash device according to the present invention, FIG. 1 shows main flowcharts in an embodiment of the self-TFth dimming strobe device according to the present invention. 1...Microcomputer, 2...Information display device,
3... F value input device, 4... Film sensitivity input device, 5... Operation mode detection device, 6...
...Close-up sensor detection device. Name of agent: Patent attorney Toshio Nakao and 1 other person
1 Figure! Figure 3

Claims (3)

[Claims] (1) Equipped with an information display device that includes a microcomputer that calculates the exposure state based on input of shooting information such as film sensitivity, F-number, and operation mode, and displays the result along with the input information value on the display device. In the automatic light control flash device, the microcomputer determines whether or not the automatic light control flash device is in a state in which automatic light control operation is possible, based on an output state of an operation mode detection device. , is selected when it is determined in the first step that the manual mode cannot perform automatic light adjustment operation, and whether or not a close-up sensor, which is an auxiliary device during close-up photography, is attached is determined based on the output state of the close-up sensor detection device. and a warning step that is selected when it is determined that the close-up sensor is attached in the second step and includes a third step that erases at least the display of the F value, Close-up mode is set. An automatic light control flash device, characterized in that the information display device can notify that the F value is optional. (2) The warning step is selected after the third step of erasing the display of the F value, and the display section of the operation mode displays a state in which automatic dimming operation is possible and a state in which it is impossible. 2. The automatic light control flash device according to claim 1, further comprising a fourth step of alternately displaying . (3) The warning step is selected after the third step of erasing the display of the F value, and has a sixth step of generating a warning sound. The automatic light control strobe device described in .