JPS59195634A - Interval photographing device - Google Patents

Abstract

PURPOSE:To form a camera interval photographing device enabled to calculate and display automatically the time required unitl the end of photographing by setting up photographing time intervals. CONSTITUTION:When the photographing time interval it is set up to a photographing time interval setting circuit 2, the set value is displayed on a display circuit 6 and also inputted to an arithmetic circuit 7. In addition, the number of film frames information No and film counter information Nc are inputted from the camera Ca side to the arithmetic circuit 7 and current time To is also inputted from a clock circuit 8. On the basis of these data, the arithmetic circuit 7 derives the time (t) required until the end of photographing from t=(No-Nc)Xti and photographing end time T from T=To+t and outputs these values t, T to display circuits 4a, 4b respectively. Since the To is changed together with the passage of time, T is also changed. When the operation of a signal generating circuit is started under said condition, the circuit 3 outputs a photographing starting signal to the camera Ca side repeatedly at the time interval set up in the photographing time interval setting circuit 2 to perform interval photographing.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to an interval photographing device for a camera.

(Background of the Invention) Generally, an interval photography device used with an electric camera generates a shutter release signal at a time interval arbitrarily set by the user, and this signal is sent to the camera. It enables continuous photography at fixed time intervals and is effectively used for unmanned photography.

However, when you intend to intermittently photograph the moment-to-moment changes in a subject using this type of device, you want to know how long it will take to finish shooting, or you want to arbitrarily set the time it takes to finish shooting. Although there are many cases where this is the case, the user has to read the remaining amount of film and calculate it himself, which requires a lot of effort and is prone to errors.

(Object of the Invention) The present invention solves these drawbacks and provides an interval photography device that can automatically calculate and display the time required to complete photography by setting the photography time interval. purpose.

(Example) FIG. 1 shows an example of the present invention, where Ca is the camera body It
indicates the main body of the interval imaging device.

The explanation will be given below based on this figure.

'When J sets the shadow time #(1), it converts the time t required for the end of the shadow set arbitrarily set by the user into an electrical signal and outputs the cuff.
This is the circuit. Further, the light/shadow time interval setting circuit (2) is a circuit that similarly converts the photographing time interval ti arbitrarily set by the user into a TI signal and outputs it. These two circuits are connected to the arithmetic circuit (power) via switching half-eyes (5a) and (5b).
↑j・；Shadow start signal is output repeatedly to the fi'r shadow time open time interval Ra body Ca set in the constant circuit (2) or the arithmetic circuit (output from the force). configured. In addition, the display circuits (4a) and (4b) are capable of displaying the time required until the end of shooting and the scheduled end time T of shooting, respectively, and the display circuit (6) is capable of displaying the time T required until the end of shooting and the scheduled end time T of shooting.
i! Three shadow time open time intervals are possible.

Calculation path (7) receives the signal from the clock circuit (8), the film number information and film counter information from the camera body, and performs necessary calculations.

The clock circuit (8) is a circuit that outputs a signal indicating the current time, and the stand circuit (9) generates a signal to alert the user based on the output of the arithmetic circuit (7).

Film count information decoder (1
0) reads and decodes the film number information given on the film cartridge, and once a film is loaded, its output value does not change until it is removed.

Further, the film counter information output circuit (11) outputs film counter information at that time, that is, information on the number of film frames that have been shot.

FIGS. 2 and 6 show specific examples of the film number detection section.

Ca is the camera body, and F is the film.

There is a number information pattern (213) on the side of the film (F'l).
-21d) are provided, and contacts (22a-22d) are provided on the camera (Ca) side at positions corresponding to the respective patterns when the film (G) is loaded.

Among the number information patterns (213 to 21d) of film ■, (21a) is always in a conductive state with the contact (22a),
Fallen to the ground but other than that (21b-21d
) forms 6-bit sheet number information depending on whether a non-conductive material is applied or not. FIG. 6 shows an embodiment of a circuit for reading this sheet number information.

When the film (G) is not loaded, the inverters (24b to 24d) each have a pull-up resistor (2).
3b to 26d) keep the input in a high state. Now, the film [F] is loaded and the pattern (2I
When the contact (22C) and the contact (22C) are electrically connected, the contact (22a)
Inverter (24C) to fall to ground via
The output becomes Hi. The outputs of these inverters are decoded as film number information in a decoder (10).

Next, in Fig. 4, the film counter information output circuit (1
A specific example of 1) is shown below.

In the figure, (36) is a conventionally known film counter, which is configured to sequentially advance a numerical value (36b) indicated by an index (7) in conjunction with the winding operation of one frame of film.

The rotation axis (30a) of the substrate (60) is coaxial with the rotation all (36a) of the film counter, and is rotatable integrally with the rotation axis (30a) of the substrate (60). On this board, there is a resistor section (
32) is formed, from which tap Wl'f (31)
are arranged radially. In addition, this resistor part (32
) is connected to a concentric pattern (66) arranged concentrically inside thereof.

(34) and (35) are contact pieces that are in contact with the tap group (31) and the concentric pattern (63), respectively.
56), a certain resistance value change occurs and is output as film counter information.

Next, returning to FIG. 1, the operation will be explained.

First, a state in which the switching means (5a) is opened and the switching means (5b) is closed (hereinafter referred to as the first mode) will be described.

Now, when the user sets the shooting time interval ti (sec) in the shooting time interval setting circuit (2), the value is displayed in the display circuit (6).
and is also input to the arithmetic circuit (7).

Further, film number information No. and film counter information Nc are inputted to the arithmetic circuit (7) from the camera (Ca) side. Further, the current time To is inputted to the clock circuit (8). The arithmetic circuit calculates the time t required until the end of photography from these data as t = (No-Nc) xti, and the time T for the end of photography as T = To-)t, and outputs them to display circuits (4a) and (4b). do.

Of course, as To changes over time, T also changes.

In this state, a signal (Ca) is generated by means not shown.
The IP shadow start signal is repeatedly output to the side, and interval JA (shading is performed).

At this time, the output Nc of the film counter (11) of the camera changes as the shooting progresses, but the scheduled shooting end time T does not change because the current time To also changes every moment. For this reason, the calculation of T may be configured in such a way that it is discontinued upon the start of interval photography.

Next, a state in which the switching means (5a) is closed and the switching means (5b) is open (hereinafter referred to as the second mode) will be described.

In this state, the user operates the operation end time setting circuit (1).
When the required time t' until the end of photography is set, the value is displayed on the display circuit (4a) and is also input to the arithmetic circuit (7). As in the case of the first mode, the calculation circuit (input) further receives the film number information No. and the film counter information Nc from the camera (Ca) side, as well as the current time TO from the lock circuit (8).

The arithmetic circuit calculates the photographing end time T' from these data as T'=To-1-t' and outputs it to the display circuit (4b), and also calculates the photographing time interval t'i as t'i = (T' -To)/(No-Nc) and outputs it to the display circuit (6).In this state, the interval timer (It) is determined by means not shown.
When the operation of the signal generating circuit (6) starts, the arithmetic circuit V
) A release signal is output to the camera (Ca) at time intervals of the calculated value t'i, and interval photography is performed.

Next, a state in which both the switching means (5a) and (5b) are closed (hereinafter referred to as the sixth mode) will be described.

In this state, when the user sets the shooting time interval t'i in the shooting time interval setting circuit 9) and the time required to finish shooting t# in the shooting end time setting circuit (1), these values are They are displayed on the display circuit (6) (4a) and also input to the arithmetic circuit (power). Also, the clock circuit (8)
Since the current time To is input from , the arithmetic circuit (7) calculates the shooting end time T" from these data as T'=To-1-
t' and outputs it to the display circuit (4b), and also calculates the required number of films N as N-(T"-To)/l#i, and combines this with the film number information No. from the camera (Ca) side and the film counter. Difference in information Nc (No-Nc)
Only when the relationship is N) (No-Nc) will a signal be sent to the warning circuit (9), indicating that there is insufficient film remaining between the shooting time interval set by the user and the time required to complete shooting. Give a notice to that effect.You can also give a written notice by calculating the number of missing sheets N-(No-Nc) using the arithmetic circuit (power) and displaying the result on the MS, notice circuit (9). .

In addition, an input means (not shown) is provided for manually setting the required number of films N, so that the number of films remaining i(N) can be set manually.

-Nc) and the above-mentioned nozzle display can also be performed.

In the interval photographing device of this embodiment, the number of sheets information NO and the film counter information Nc are each input from the camera side, but the present invention is not limited to this, and for example, the remaining amount of film can be calculated on the camera side. How to input the interval tMB into the device, number of sheets information No.
This also includes a mode in which the counter information Nc, whichever is smaller, is manually input into the interval photographing device, or the remaining amount of film is input manually.

(Effects of the Invention) As described above, the present invention provides an interval shooting device that automatically displays the time required from the remaining amount of film to the end of shooting when the user arbitrarily sets the shooting time interval. It becomes possible to do so.

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[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a perspective view showing a film number information detection section, FIG. 3 is a film number information detection circuit diagram, and FIG. 4 is an illustration of a film counter information detection section. FIG. 2 is a plan view showing an example. (Explanation of symbols of main parts) 2・・・・・・・・・・・・・・・・・・・・・・・・
Shooting time interval setting means...
...... Shooting start signal generation means 10.11
．． 7... Film remaining amount signal output means 7.
・・・・・・・・・・・・・・・・・・・・・・・演算回路出顆入 日本光学工業株曳会社代理人 渡 辺 隆 男；１−１図矛拐囚

Claims (1)

[Scope of Claims] Means for setting a shooting time interval; Shooting start signal generating means for repeatedly outputting a shooting start signal at the shooting time interval; Remaining amount signal outputting means capable of outputting a signal indicating the remaining amount of film. an interval photographing device comprising: an arithmetic circuit that calculates the time required for inter-nocular scanning from the photographing time interval and the remaining amount signal;