JPH0876198A - Film feeding controller for camera - Google Patents

Abstract

PURPOSE: To enable the sure light emission of a built-in stroboscope and the setting of the actuating timing of a shutter in accordance with the will of a photographer, even when a consecutive photographing mode is set and the stroboscope is tuned on. CONSTITUTION: This film feeding controller for camera is provided with a setting means 6 for setting a film feeding mode for at least switching consecutive and single photographing modes and strobe photographing, a display means 5 for displaying contents set by the setting means 6, a strobe light emitting means 3 emitting light by a strobe light emitting control means 2, at the Lime of setting the strobe photographing, a sequence drive control means 7 controlling the exposure of a film by the fully depressing of a shutter button, a film feeding control means 9 and a microcomputer 1 executing control for switching the film feeding mode to the single photographing mode, when the strobe photographing is set during the setting of the consecutive photographing mode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to controlling film feeding of a camera.

[0002]

2. Description of the Related Art Conventionally, there are two types of control methods for film feed control during stroboscopic photography, as shown in the flow charts of FIGS. Hereinafter, the control method will be described with reference to FIGS. 4 and 5. The # symbol in the figure indicates a step.

First, FIG. 4 will be described. The camera is set so that the film feed mode is continuous shooting mode and the built-in flash is ready to fire. (# 101)
Here, when the shutter button is fully pressed, the charging completion of the (# 102) strobe (hereinafter SB) is detected. If the charging is completed, the sequence operation is started. Operation will not be accepted.
(# 103) If SB charging is completed, (# 1)
04) film exposure control, (# 105) mirror down step, (# 106) film feeding completion, and (# 107) a series of operations are completed. Even when the operation of one sequence is completed, if the shutter button is fully pressed (# 108), the charging completion state is detected in the same manner as described above, and then the sequence operation of the (# 109) frame is started.
10) If not completed, it will be in a standby state.

Next, FIG. 5 will be described. The setting state and operation of the camera are the same as those in FIG. 3, but in the conventional example, the sequence operation is started regardless of the charging completion state of the SB. Although it is described in # 203 and # 209 that the charge completion detection determination is performed, this is because it is easy to understand that the next sequence operation is started regardless of the charge completion state.

[0005]

In the conventional example shown in FIG. 4, the following problems occur. Even if the continuous shooting mode is set, the waiting time until the SB charging is completed is required, and therefore the continuous shooting is extremely slow, and the continuous shooting cannot be performed. Also, the waiting time until the SB charging is completed changes depending on the power status of the camera.
Since it is unknown when the release of the next frame will be accepted, the shutter will be released regardless of the photographer's intention.

In the conventional example shown in FIG. 5, the following problems occur. Since the release is accepted regardless of the charging completion state of the SB, the SB may not emit light. Further, in the continuous shooting mode, the standby time for completion of charging cannot be taken, so that the emission of SB is substantially prohibited from the second frame onward.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to ensure that the SB can be surely set even when the continuous shooting mode is set and the built-in SB is turned on. It is an object of the present invention to provide a film feeding control device for a camera that emits light and enables the shutter operation timing to be determined based on the will of the photographer.

[0008]

To achieve the above object, in the present invention, in the film feeding control device, the film feeding mode setting for switching at least the continuous photographing mode and the single photographing mode and the setting for SB photographing are set. Means, a display means for displaying the contents set by the setting means, an SB light emitting means for emitting light by the SB light emitting control means when the SB shooting is set, and a sequence drive control for performing film exposure control by fully pressing the shutter button. Means and film feed control means, and SB during continuous shooting mode setting
It is an object of the present invention to provide a means for solving the problem to have a microcomputer that performs control for switching the film feeding mode to the single shooting mode when shooting is set.

Further, the film feeding control device warns that the feeding mode has been switched by blinking the film feeding display in the setting display when the SB photographing is set during the continuous photographing mode setting. Have the means to do.

[0010]

In the present invention, even when the continuous shooting mode is set, the single SB shooting mode is automatically switched to when the built-in SB is turned ON, and the release is accepted when the charging is completed. Further, since the film feeding mode is automatically switched, the set feeding mode displayed on the external display means is made to blink in order to warn the photographer of the switching.
Therefore, turn on the built-in SB in the continuous shooting mode.
When set to N, the mode is automatically switched to the single feeding mode, so that the operation to switch to the feeding mode by the function setting operation can be eliminated. Therefore, the selection of the film feeding mode suitable for SB shooting can be simplified.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram of an embodiment of the present invention. In FIG. 1, a microcomputer 1 (hereinafter, referred to as MCU) that controls a camera controls and drives each function. Half-press SW11
Is turned on, the power supply circuit (not shown) is started and the MCU
The control process 1 is started. The setting means 6 sets various functions (not described) of the camera such as setting of the film feeding mode and setting of the SB emission mode, and the setting state is displayed on the display means 5 via the display driver 4.

When the shutter full-press release SW12 is turned on, the MCU 1 controls the sequence drive 8 via the sequence drive control means 7 and the film feed drive 10 via the film feed drive control means in accordance with the setting contents. Film exposure control (not shown)
To execute. When the SB light emission mode is selected by the setting means 6 during the built-in SB image pickup, the MCU 1 enables the SB light emission means 3 to emit light via the SB light emission control means 2.

FIG. 2 is a flow chart showing the operation when the MCU 1 performs the built-in SB shooting in the continuous shooting mode. Note that the # symbol in the figure indicates a step. In FIG. 2, the camera is set by the setting means 6 to the continuous shooting mode and the built-in SB shooting mode (built-in flash SW ON). (# 301) When the half-depressed SW11 is turned on, a power supply circuit (not shown) is activated and the MCU 1 starts control processing. (# 302) Here, it is detected whether or not the built-in SB flash mode is set. (# 303) When the built-in SB flash mode setting is detected, the continuous shooting mode setting is automatically switched to the single shooting mode. At the same time, a blinking warning is given while the feeding mode display remains set. (# 304) If the built-in SB emission mode setting is not detected,
The normal continuous shooting operation is executed. (# 304 ') Next, the sequence operation is started by fully pressing the shutter button (step # 305). S before starting sequence operation
Check the charge status of B. (# 306) When SB charging is not completed, release is not accepted. (# 3
11 ') When the SB charging completion state is detected, a series of exposure operations of the camera, mirror up process, (# 307) film exposure control, (# 308) mirror down process, (# 30)
9) When the film feeding is completed (# 310), the operation is stopped.

After that, once the OFF state of the half-push SW is detected and (# 311) the OFF state of the half-push SW is not detected, the release prohibition is continued, and when (# 311 ') is detected, the release of the next frame is released. It will be in a standby state. (# 312) FIG. 3 is a diagram illustrating the display unit. FIG. 3A shows the external LCD display when the high-speed continuous shooting mode (CH) is set.

In FIG. 3, the function setting states of the functions such as the photometry mode 21, the exposure mode 22, the focus mode 23, the feeding mode 24, and the film sensitivity setting 25 are displayed in the zone provided on the arc. . 26 is TV, AV
Is a control value, and 27 is a film frame numerical value. There are various other displays, but the other display contents are omitted here. FIG. 3B shows a display state when the built-in SB photographing mode is set in addition to the above setting state.

The feeding mode display, which was displaying the high-speed continuous shooting mode, flashes at the same time as the setting is completed to warn that the single shooting mode has been switched.

[0017]

As described above, according to the present invention, when the built-in SB shooting mode is set while the high-speed continuous shooting mode (CH) is set, the high-speed continuous shooting mode is automatically switched to the single shooting mode. , The effect that the film feeding mode suitable for SB shooting can be obtained quickly without any setting operation.

Therefore, there is an effect that the shutter release timing is deviated due to the change in SB charging completion time (voltage dependency) as in the prior art, and it is necessary to take an image without knowing when the shutter will be released. Also,
In the conventional example in which the release permission is issued regardless of the SB charging completion state, there is a great risk that the camera will be photographed without SB emission even though the SB photographing mode is set. There is no SB emission. According to the present invention, there is no such danger, and when the SB shooting mode is set, there is an effect that it is possible to shoot with the SB always emitting light.

[Brief description of drawings]

FIG. 1 is a block diagram showing a hardware configuration of an embodiment of the present invention.

FIG. 2 is a flowchart showing a flow when the SB shooting mode is selected during the continuous shooting mode setting of the present invention.

FIG. 3 is a display state diagram of an external LCD that is a display unit of the present invention.

FIG. 4 is a flowchart showing a flow when the SB shooting mode is selected during the conventional continuous shooting mode setting.

FIG. 5 is a flowchart showing a flow when the SB shooting mode is selected during the conventional continuous shooting mode setting.

[Explanation of symbols]

 1 Microcomputer (MCU) 2 SB light emission control means 3 SB light emission means 4 Display driver 5 Display means 6 Setting means 7 Sequence drive control means 8 Sequence drive section 9 Film feeding drive control means 10 Film feeding means 11 Half-press SW 12 Fully press the shutter button (release SW)

Claims (2)

[Claims] 1. A film feeding mode setting for switching at least a continuous shooting mode and a single shooting mode and S.
Setting means for setting the B photographing, display means for displaying the contents set by the setting means, SB light emitting means for emitting light by the SB light emitting control means when the SB photographing is set, and film exposure control by fully pressing the shutter button. A sequence drive control means and a film feed control means for performing the above, and a microcomputer for performing control for switching the film feed mode to the single shooting mode when SB shooting is set during continuous shooting mode setting,
Film feed control device for camera characterized by having 2. A film feeding control device for a camera according to claim 1, wherein SB is set during continuous shooting mode setting.
A film feeding control device for a camera, which has means for making a film feeding display in the setting display blink to warn that the feeding mode has been switched, when a shooting setting is made.