JPH03213838A - Self photographing method for camera - Google Patents

Abstract

PURPOSE:To shorten a waiting time and to omit a range-finding operation before starting a self-operation by detecting that a photographer gets in a photographed position and performing a specified shutter releasing action. CONSTITUTION:1st range-finding data AFD obtained to be stored by performing range-finding by a range-finding part 16 at the time of starting sequence where the self photographing is performed is compared with 2nd range-finding data AFD obtained by repetitively performing the range-finding in a fixed cycle thereafter. When the range-finding data AFD is changed, it is judged that the photographers gets in the photographed position and the specified shutter releasing action is started by a CPU 10. In the case that a fixed time elapses without the change of the range-finding data AFD, a shutter is automatically released. Thus, the waiting time is shortened, and the range-finding of an object distance before starting the self-operation is made needless.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a self-photographing method using a camera, and more particularly to a self-photographing method using a camera having an automatic focus adjustment function.

[Conventional technology]

Generally, when taking a self-photograph, a self-timer is used that provides a predetermined time difference (for example, 10 seconds) from when the /Yatta release button is pressed until the shutter actually operates.

Furthermore, there are also cameras recently that allow self-photography using a remote control.

[Problem to be solved by the invention]

However, when using a self-timer, there is a problem that the predetermined self-time is busy with getting to the position where you stand and creating a pose, and the self-time is too long, resulting in long waiting times. be. Furthermore, in order to measure the distance to the subject when pressing the shirt release button, ordinary cameras measure the distance by pointing the camera at a subject equidistant from where you are standing, and then change the composition and take a selfie. It was necessary to start a timer, which was complicated.

On the other hand, a camera equipped with a remote control is expensive and has the disadvantage that the camera is also larger.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a self-photographing method using a camera that can solve these drawbacks.

[Means to solve problems]

In order to achieve the above object, the present invention includes the steps of starting a sequence for taking a self-photograph by operating a predetermined button, measuring the distance to a subject at the start of the sequence, and measuring a distance to a subject corresponding to the subject distance. a first distance measuring step of storing distance measuring data of the tenth distance measuring step;
After measuring the distance in the distance measuring step, a second distance measuring step measures the distance to the object at regular intervals and obtains second distance measurement data corresponding to the object distance; a detection step of comparing the distance measurement data with second distance measurement data and detecting a change in the distance measurement data; and when a change in the distance measurement data is detected by the detection step, or a change in the distance measurement data is not detected for a certain period of time. The present invention is characterized by comprising the steps of: executing a predetermined shirt release operation;

[Effect]

According to the present invention, a predetermined release operation is performed by detecting that the photographer enters the photographing position. In other words, the first distance measurement data is measured and stored when the sequence for self-photography is started, and the second distance measurement data is obtained by repeatedly measuring the distance at regular intervals.
Compare the distance measurement data of , and when the distance measurement data changes,
It is determined that the photographer has entered the shooting position.

Then, a predetermined shirt release operation (for example, an operation of flashing the self-LED for 3 seconds and then releasing the shutter) is started from the time when the distance measurement data changes.

Furthermore, if the distance measurement data does not change during self-photography, the sequence for performing self-photography will not end forever. In addition, if the distance measurement data does not change,
For example, cases may occur when standing in front of a wall or when the target cannot be reached. In order to solve this problem, it is possible to end the sequence for taking a selfie without performing the shirt release operation after a certain period of time has elapsed.
In this case, the user may mistakenly think that the shutter has been released. Therefore, in the present invention, the shutter is automatically released when a certain period of time has elapsed without any change in the distance measurement data.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a self-photographing method using a camera according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a block diagram showing an embodiment of the entire circuit of a camera to which the method of the present invention is applied. As shown in the figure, the circuit of this camera includes a central processing unit (CPU) 10, a group of operation switches 12, a photometry section 14, a distance measurement section 16, and a shutter section 1.
8. It mainly consists of a liquid crystal display section 20 and the like.

The operation switch group 12 includes, for example, a camera main switch SM and a shirt release switch SP.

It has a focus lock switch 5PFL, a self mode changeover switch 5SELF, a film manual rewind switch SMR, a distant view or night view control switch fsINF, an option mode switch 5OFT, a tele operation control switch S position E, a wide operation control switch SWI DE, etc. The outputs of these switches are applied to the CPU 10.

The photometer 14 measures the brightness of the subject and outputs a signal 5HAE representing the photometry data and a signal SHr representing γ correction data of the photoconductive element of the photometer 16 to the CPU10.

The distance measuring unit 16 measures the distance to the subject by triangulation,
The distance measurement data AFD is output to CPU10. That is,
The CPUl0 outputs a drive signal AFLED to the infrared light emitting diode 30 for causing the infrared light emitting diode 30 to emit light during distance measurement, and also outputs an AP logic clock signal AFLCKSAF serial data AFSDXAF serial clock signal for driving the distance measuring section 16. AFSCK is output to the ranging section 16. Here, infrared light emitting diode 3
0 can emit multi-beam light of beams L, C, and R in response to a drive signal AFLED from the CPU 10, and can also emit a single beam of only beam C. Further, the distance measurement unit 16 performs distance measurement using AF serial data AFSD indicating a distance measurement command using the beam L and CSR, and serially transfers this distance measurement data AFD to the CPU10.

The shutter unit 18 is a stepping motor-driven lens shutter that electromagnetically drives and controls the opening/closing of the shutter blades, and is controlled by stepping motor drive control signals 5HO1SH1, SH2 and AP magnet drive control signal SHAFMg applied from the CPU 10. . That is, when performing shutter control, first, the AF magnet is excited by the AF magnet drive control signal SHAFMg to enable lens drive, and the stepping motor is driven by the stepping motor drive control signals 5HO1SHI and SH2 to move the lens. . When the step position corresponding to distance measurement data AFD measured in advance is reached, the AF magnet is demagnetized to enable shutter blade driving. After that, when the stepping motor is further driven, the Nyatta blade opens. When the step position corresponding to the photometric data 5HAE measured in advance is reached, the stepping motor is reversed, the shutter blade is closed, and the series of operations is completed when the camera returns to the initial position.

As shown in FIG. 2(A), the liquid crystal display section 20 includes a self-timer display section 22, film number display sections 24A and 24B,
It has a film feed display section 26, a battery warning display section 28, etc., and performs necessary display based on a control signal from CPU10. Incidentally, Fig. 2 (B) shows the display contents in a mode (hereinafter referred to as normal self mode) in which a photograph is taken after a certain period of time has elapsed after pressing the shirt release switch SP. ) indicates the display contents of a mode for self-photography according to the present invention (hereinafter referred to as auto-self mode), which will be described later. rA using the display section 24B
Display J.

Furthermore, Figure 2 (D) is a mode for taking multiple photos in auto selfie mode (hereinafter referred to as multi auto selfie mode).
In the case of this multi-auto self mode, the self-timer display section 22 is displayed, "A" is displayed using the film number display section 24A, and the film number display section 24B is displayed. Use this to display the number.

Further, in FIG. 1, the CPU 10 outputs a signal 5ELFLED to the self-light emitting diode 32 to control its lighting during the self-operation. Furthermore, the CPU receives a 4-bit signal EASE indicating the zoom position from the encoder 34.
B, EC, and ED are added, and a signal SO is added from the l-frame detection switch 36 every time the film is advanced by one frame.
The film sensitivity detection switch 38 detects the film's ISO.
4-bit signals indicating sensitivity DX2, DX3, DX4, D
X5 has been added. Further, the CPU 10 outputs a date imprinting signal
Outputs 1MDI and MD2.

Next, regarding the self-photography method using the camera according to the present invention,
This will be explained in detail with reference to the flowchart shown in FIG.

When the main switch SM of the camera is pressed ONL and the shirt release switch SP is pressed, the CPU 10 executes the following processing.

First, it is determined whether the photographing mode is set to auto-self mode (step 100). Here, if the auto self mode is not set, it is determined whether the normal self mode is set (step 110). Note that the auto self mode can be set by the option mode switch 5OFT, and the normal self mode can be set by the self mode changeover switch 5SELF.

If the Stella 7'llO determines that the normal selfie mode is not set, normal photography will be performed.

That is, while inputting distance measurement data from the distance measurement section 16,
Step 120: Input photometric data from the photometric section 14.
130), in order to control the lens extension amount and exposure based on these distance measurement data and photometry data, output the stepping motor drive control signals 5HO1SH1, SH2 and the AF magnet drive control signal SHAFMg to the shutter unit 18 as described above. Then, in step 140), the photographing ends.

On the other hand, when it is determined that the normal self mode is set in Stella 7'llO, the self LED 32 is turned on for 7 seconds (step 150), and then the self LED 32 is turned on for 7 seconds (step 150).
2 blinks for 3 seconds (step 160), that is, 10 seconds after pressing the shirt release switch SP, step 120, 130, 140 is performed in the same manner as above.
Take pictures through.

Next, a case will be described in which it is determined in step 100 that the auto-self mode is set.

In this case, first, the self-LED 32 is turned on, the distance measurement unit 16 is made to measure the distance, and the distance measurement data 8F (1) when the shirt release switch SP is pressed is manually stored (step 200, 210).

Next, it is determined whether a certain period of time T (for example, 0.5 seconds) has elapsed (step 220), and after the elapse of time T,
The distance measurement unit 16 measures the distance again, and the distance measurement data A F
(2) is input (step 23o), and the stored distance measurement data A F (1) is compared with the distance measurement data A F (2) measured after time T1 (step 240).
.

Then, the distance measurement data A P (1) and the distance measurement data A F
(2), it is determined whether a certain period of time T2 (for example, 30 seconds) has elapsed since the auto-self mode started (step 240), and the process returns to step 220 until the time T2 has elapsed. Distance data A for each T
F (2) The comparison between the human power and distance measurement data AF[1] and the distance measurement data AF (2) is repeatedly performed.

On the other hand, distance measurement data A F (1) and distance measurement data A F
If (2) is different, it is determined that the photographer has entered the predetermined shooting position, and when the distance measurement data changes, the process moves from step 240 to step 160, and the self-LED is set to 3.
After blinking for seconds, step 120.130.140
Take pictures through.

Furthermore, if the distance measurement data A F (1) and the distance measurement data A P (2) are equal and the distance measurement data does not change during the time T2, after the time interval T2 has elapsed, the process starts from step 250 in the same way as above. Go to step 160, self and ED 3
After blinking for seconds, step 120.130.140
Take pictures through.

〔Effect of the invention〕

As explained above, according to the self-photographing method of the camera according to the present invention, since the predetermined shirt release operation is performed upon detecting that the photographer enters the shooting position, it is different from the conventional self-timer device. There is no need to worry about the hassle of creating poses or long waiting times, and there is also the advantage of not having to perform a series of distance measurement operations to measure the distance equidistant from where you are standing before starting self-control. . Furthermore, by using the existing distance measuring means, the cost does not increase significantly compared to the case where a separate remote control transmitter/receiver is provided.

Furthermore, if it cannot be detected that the photographer has entered the shooting position (if the distance measurement data does not change), a predetermined shirt release operation will be performed after a certain period of time has elapsed, so self-shooting is always possible. guaranteed to be done.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an example of the entire circuit of a camera to which the camera self-photography method according to the present invention is applied, and FIGS. FIG. 3, which is a diagram used to explain details, is a flowchart used to explain a self-photographing method using a camera according to the present invention. IO...Central processing unit, 12...Operation switch group, 14...Photometry section, 16...Distance measurement section, 18.
...Shutter part, 20...Liquid crystal display part, 30...
・Infrared light emitting diode, 32...Self light emitting diode.

Claims (1)

[Claims] A step of starting a sequence for taking a self-photograph by operating a predetermined button, and measuring a subject distance at the start of the sequence, and obtaining first distance measurement data corresponding to the subject distance. a first distance measurement step for storing; and a second distance measurement step for measuring a subject distance at regular intervals after measuring the distance in the first distance measurement step, and obtaining second distance measurement data corresponding to the subject distance; a distance measurement step, comparing the first distance measurement data and the second distance measurement data,
a detection step of detecting a change in distance measurement data; and a step of executing a predetermined shutter release operation when a change in distance measurement data is detected by the detection step or when a change in distance measurement data is not detected for a certain period of time. A self-photographing method using a camera, comprising the following steps.