JPH03212635A - Self photographing method for camera - Google Patents

Abstract

PURPOSE:To eliminate failure caused by a waiting time like a self-timer by measuring the distance of an object every constant cycle from the sequence starting time of a self mode and performing a shutter release action in the case of detecting the change thereof. CONSTITUTION:In a camera provided with an automatic focusing function and an INF mode which fixes the distance of the object at infinity, a photographing system in an automatic self mode is constituted as follows. First, a CPU 10 turns on a self LED 32 and allows a range-finding part 16 to perform range-finding. Range-finding data at the time of depressing a shutter release switch is inputted and stored. Continuously, the range-finding part 16 is allowed to perform the range-finding in the cycle of 0.5 seconds and the data is inputted, stored and compared with the previous data. When compared values are different, it is judged that a photographer gets in a specified photographing position and photographing is executed after flickering the self LED 32 for three seconds.

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 to provide a predetermined time difference (for example, 10 seconds) from when the shirt 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 during the predetermined self-time, the user has to go to the position where he or she is standing and create a pose, and if the self-time is too long, the waiting time becomes long. 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.

In addition, in some recent AF cameras, to compensate for the drawbacks of active AF, a mode (hereinafter referred to as INF mode) for fixing the subject distance to infinity can be set using a distant view or night view control switch. .

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-photography method for a camera that can solve these drawbacks and also be compatible with the INF mode. .

[Means to solve problems]

To achieve the above object, the present invention provides a self-photographing method for a camera having an automatic focus adjustment function and an INF mode for fixing the subject distance to infinity, which includes: setting the auto-selfie mode by operating a self-photographing switch;
and a step of canceling the INF mode when the INF mode is set and not accepting the setting of the INF mode while the auto self mode is being set; When ○N is selected, a step of starting a sequence for taking a self-photograph using the auto selfie mode, 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 the distance, 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 detecting step of comparing the first ranging data and the second ranging data to detect a change in the ranging data; and a detecting step of detecting a change in the ranging data by the detecting step. and then executing a predetermined seven-point release operation.

[Effect]

According to the present invention, a predetermined shirt release operation is performed by detecting that the photographer enters the photographing position. In other words, the first distance measurement data that was measured and stored when starting the sequence for self-photography in auto self-mode, and the second distance measurement data that was obtained by repeatedly measuring the distance at a fixed cycle thereafter. Compare with distance data,
It is determined that the photographer has entered the shooting position when the distance measurement data changes. 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.

Note that the auto-self mode and the INF mode for fixing the subject distance to infinity are contradictory modes, so the auto-self mode is given priority. That is, when setting the auto-self mode, if the INF mode is set, the INF mode is canceled and the auto-self mode is set, and the setting of the INF mode is not accepted during the auto-self mode. There is.

〔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.

Focus lock switch S P F L, self mode switch 5SELF, film manual rewind switch 5MR1, landscape or night view control switch 5INF
, option mode switch 5 OPT1 tele operation control switch S position E, wide operation control switch S W I D
E etc., and the output of these switches is the CPU
It can be added to l0.

The photometer 14 measures the brightness of the subject and outputs a signal 5HAE indicating the photometry data and a signal SHr indicating T 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 the CPU 10. That is, the CPU10 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 AF logic clock signal APLCK and AF serial data for driving the distance measurement section 16. AFSDSAF real clock signal AFSCK
is output to the distance measuring section 16. Here, the infrared light emitting diode 30 can emit multi-beams li of beams L, C, and R according to the drive signal APLED from CPU10, and can also emit a single beam of only beam C. There is. Further, the distance measuring unit 16 performs distance measurement using AF serial data AFSD indicating a distance measurement command based on Bee 4L, C, R1, and this distance measurement data AF
Serially transfer D to 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 the stepping motor drive control signals 5HO1SH1, SH2 and the AF magnet drive control signal SHAFMg applied from the CPU10. That is, when performing shutter control, first, the AP 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. Thereafter, when the stepping motor is further driven, the shutter 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 photographing is performed after a certain period of time has elapsed since the shirt release switch SP was pressed. Further, FIG. 2(C) shows the display contents of a mode for performing self-photography according to the present invention (hereinafter referred to as auto-self mode), which will be described later. At the same time, use the film number display section 24B to display "A".
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 multi-auto self mode, the self-timer display section 22 is displayed, and the film number display section 24A is used to display "rA", and the film number display section 24B is used. 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 4-bit signals EA and E indicating the zoom position from the encoder 34.
B, EC5ED are added, and a signal SO is added from the 1-frame detection switch 36 every time the film is advanced by 1 frame.
The film sensitivity detection switch 38 detects the film sensitivity of 150.
4 pit signals indicating sensitivity DX2, DX3, DX4, D
X5 has been added. The CPU 10 also outputs a date imprinting signal X to the date imprinting device 40, and also sends 3-pit motor drive signals MDO,
Outputs MD1 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 flowcharts shown in FIGS. 3 to 5.

CUPIO operates when the main switch SM of the camera is turned on, performs key changes of the operation switch group 12 at high speed, and when the key force changes, executes processing according to the key.

First, a case where the key force from the option mode switch 5OFT changes will be described.

In this case, as shown in FIG. 3, it is first determined whether the switch 5OFT is turned on (step 50). When the switch 5OFT is turned from ON to OFF, the process returns to the main routine (not shown), and when the switch 5OFT is turned from OFF to ON, the process proceeds to step 52. That is, the switch 5OFT is a non-locking push-button switch, and when the switch 5OFT is pressed, the process proceeds to step 52 at the moment the switch 5OFT is pressed. That is, the switch 5OFT is a non-locking push button switch.
When OFT is pressed, the process proceeds to step 52 at the time of the press.

In step 52, it is determined whether the current mode is the auto-self mode or not, and if it is not the auto-self mode, the auto-self mode is set (step 54).
If the current mode is the auto-self mode, the auto-self mode is canceled (step 58).

That is, when the current mode is not the auto-self mode, pressing the switch 5OFT sets the auto-self mode and cancels the INF mode, and when the current mode is the auto-self mode, pressing the switch 5OFT once cancels the auto-self mode.

Next, a case will be described in which the key input from the distant view or night view control switch 5INF changes.

In this case, as shown in FIG. 4, it is first determined whether the switch 5INF is turned on (step 60). When switch S T N F is turned from ON to OFF, the process returns to the main routine (not shown) and switch 5INF is turned OFF.
If it is turned on from F, the process advances to step 62. It should be noted that the switch 5INF is also a non-locking push button switch like the switch 5OFT.

In step 62, it is determined whether the current mode is INF mode or not. If it is INF mode, the INF mode is canceled (step 64), and if it is not INF mode, the process proceeds to step 66.

In step 66, it is determined whether the current mode is auto-self mode or not, and if it is auto-self mode, the process returns to the main routine without setting INF mode, and if it is not auto-self mode, it is set to INF mode ( Step 68).

That is, when the current mode is neither INF mode nor auto-self mode, pressing switch 5INF once will set INF mode, and when the current mode is INF mode, pressing switch 5INF once will cancel INF mode. do.

Next, the case where the shirt release switch is turned on will be explained.

In this case, the CPU 10 first determines 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 using the option mode switch 5OFT as described above, and the normal self mode can be set using the self mode changeover switch 5SE.
It can be set by LF.

If it is determined in step 110 that the normal selfie mode is not set, normal photography is performed.

That is, while manually inputting distance measurement data from the distance measurement section 16,
Step 7 120. Inputs photometry data from the photometry section 14.
130), in order to control the lens extension amount and exposure based on these distance measurement data and photometry data, the stamping motor drive control signals 5HO1SH1, SH2 and the AF magnet drive control signal SHAFMg are sent to the Nyanota part 18 as described above. After outputting (step 140), the photographing is completed.

On the other hand, if it is determined in step 110 that the normal self mode is set, the self LED 32 is lit for 7 seconds (step 150), and then the self LED 32 is blinked for 3 seconds (step 160), and then the Nyatta release is performed. 10 seconds after pressing the switch SP, photographing is performed through steps 120, 130, and 140 in the same manner as described above.

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 caused to measure the distance, and the distance measurement data AF (1) when the Nyatta release switch SP is pressed is manually memorized (steps 200 and 210). ).

Next, it is determined whether a certain period of time TI (for example, 0.5 seconds) has elapsed (step 220), and after the elapse of time T, the distance measuring section 16 measures the distance again, and the measured distance data A F (
2) is manually performed in 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, distance measurement data A F (1) and 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 250), and the process returns to step 220 until the time T 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 12o1130.140
Take pictures through.

Furthermore, if the distance measurement data A F (1) and the distance measurement data A F (2) are equal and the distance measurement data does not change during the time T2, the self-LED is turned off after the time T2 has elapsed. '260), the process ends without photographing in auto self mode.

〔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, since the photographing mode (auto selfie mode) according to the present invention is given priority over the INF mode, which is contrary to this mode, it is possible to prevent erroneous operations during self photographing according to the present invention.

[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. The figures used to explain the details and FIGS. 3 to 5 are flowcharts used to explain the self-photographing method of the camera according to the present invention, respectively. DESCRIPTION OF SYMBOLS 10...Central processing unit, 12...Operation switch group, 14...Photometry section, 16...Distance measurement section, 18
...Shutter section, 20...Liquid crystal display section, 30.
...Infrared light emitting diode, 32...Self light emitting diode.

Claims (1)

[Claims] In a self-photographing method for a camera having an automatic focus adjustment function and an INF mode for fixing a subject distance to infinity, the auto-selfie mode is set by operating a self-photographing switch, and the INF mode is set by operating a self-photographing switch. When the INF mode is set, canceling the INF mode, and not accepting the setting of the INF mode while the auto self mode is set, and when the shutter release switch is turned on while the auto self mode is set, the auto a step of starting a sequence for performing self-photography in self-mode, and a first distance measurement step of measuring a subject distance at the start of the sequence and storing first distance measurement data corresponding to the subject distance. After measuring the distance in the first distance measurement step, a second distance measurement step of measuring the distance to the subject at a constant cycle and obtaining second distance measurement data corresponding to the subject distance; Compare the first distance measurement data and the second distance measurement data,
A self-photographing method for a camera, comprising: a detection step of detecting a change in distance measurement data; and a step of executing a predetermined shutter release operation when the change in distance measurement data is detected by the detection step. .