KR20000020837A - Apparatus and method for displaying photographing mode of camera - Google Patents

Abstract

PURPOSE: An apparatus and a method for displaying a photographing mode of a camera is provided to display a photographing mode selected by a user. CONSTITUTION: An apparatus for displaying a photographing mode of a camera comprises a photographing mode selector, an operation controller, and a photographing mode display part. The photographing mode selector selects a desired photographing mode. The operation controller determines the selected photographing mode outputs a driving signal having a predetermined period during a predetermined time. The photographing mode display part displays the photographing mode to determine the selected mode. A method for displaying a photographing mode of a camera comprises the steps of: determining a photographing mode; determining a predetermined period and a predetermined time; and outputting a driving signal having a determined period during a determined time.

Description

Camera's shooting mode display device and method

The present invention relates to a camera, and more particularly to a camera capable of displaying a shooting mode selected by a user.

The autofocus camera, in which the focal length from the subject is automatically adjusted, is set with a number of shooting conditions that can be selectively used by the user.

Therefore, the user can select an appropriate shooting condition according to the surrounding shooting conditions or the preferences of the photographer, can shoot the subject in a desired state, and perform the best shooting for the surrounding shooting conditions, thereby obtaining a high quality picture.

In general, a shooting mode set in an auto focus camera includes a general shooting mode, a remote shooting mode, a self-timer shooting mode, and a red eye shooting mode.

The normal shooting mode represents a basic shooting mode of the camera, and the remote control shooting mode is a shooting mode in which shooting is performed by using a remote controller. In addition, the self-timer shooting mode is a shooting mode that allows a photographing operation of a subject to be automatically performed at a predetermined time interval. The self-timer shooting mode is mainly used when shooting an athletic event or an animal movement. The red-eye reduction mode is a shooting mode for preventing red eyes caused by sudden flash emission when a shooting operation is performed in a dark place requiring flash emission, and prevents red eyes by a plurality of preliminary flash operations.

A light emitting diode (LED) is attached to the camera so that the camera user can know the shooting mode selected by the user among the plurality of shooting modes.

As a result, the light emitting diode displays a remote control shooting mode or a self-timer shooting mode.

However, these light emitting diodes are always lit at constant brightness and period regardless of the selected shooting mode.

Therefore, a problem arises in that only the operating state of the light emitting diode does not know exactly which shooting mode is selected by the user.

In addition, a lamp is mounted for preliminary light emission operation to prevent red-eye, and preliminary light emission is performed a predetermined number of times before main light emission using a flash.

However, such lamps are only used for red-eye prevention only, and thus are not used efficiently.

Therefore, the technical problem to be achieved by the present invention is to be able to display the shooting mode selected by the user using a display device attached to the camera.

Another object of the present invention is to efficiently use a display device attached to a camera.

1A is a block diagram of a photographing mode display device of a camera according to an embodiment of the present invention;

Figure 1b shows the lamp unit in Figure 1a,

2A is an operation flowchart of a shooting mode display method of a camera according to an embodiment of the present invention;

2B is an operation flowchart of a method for displaying a shooting completion state of a camera according to an embodiment of the present invention;

3A is an operation timing diagram of a lamp by preliminary light emission according to an embodiment of the present invention,

3B is an operation timing diagram of a flash unit for main light emission according to an embodiment of the present invention;

4A to 4C are operation timing diagrams of a lamp for displaying a self-timer mode according to an embodiment of the present invention.

5 is an operation timing diagram of a lamp for displaying a remote control mode according to an embodiment of the present invention;

6 is an operation timing diagram of a lamp indicating a shooting operation completion state according to an embodiment of the present invention;

7 is an external view of a camera equipped with an auxiliary lamp.

In order to solve this problem, the present invention is to change the operation state of the display device according to the shooting mode selected by the user.

Preferably, the display device for displaying the operation mode of the camera uses a lamp that pre-lights to prevent red-eye.

Preferably, the shooting mode is a red eye prevention mode, a self-timer mode, a remote control mode.

In addition, the method for displaying the shooting mode of the camera in the present invention for solving the above problems comprises the steps of determining the shooting mode selected by the user;

And setting and outputting a cycle and time of the driving signal corresponding to the determined shooting mode.

Preferably, the shooting mode is a red eye prevention mode, a self-timer mode, a remote control mode.

Then, with reference to the accompanying drawings, with respect to the recording mode display device and method of the camera according to an embodiment of the present invention, those skilled in the art to which the present invention pertains can easily implement the present invention Preferred embodiments are described in detail.

FIG. 1A is a block diagram of a photographing mode display device of a camera according to an embodiment of the present invention, FIG. 1B illustrates a lamp unit in FIG. 1A, and FIG. 2A illustrates a photographing mode display method of a camera according to an embodiment of the present invention. 2B is an operation flowchart of a method for displaying a shooting completion state of a camera according to an embodiment of the present invention, and FIGS. 3 to 5 are operation timings of lamps according to respective shooting modes according to an embodiment of the present invention. 6 is an operation timing diagram of a lamp indicating a shooting operation completion state according to an embodiment of the present invention, and FIG. 7 is an external view of a camera equipped with an auxiliary lamp.

As shown in FIG. 1A, the structure of a photographing mode display apparatus of a camera according to an embodiment of the present invention is as follows.

The photographing mode selection unit 1, the operation control unit 2, the lamp unit 3, and the flash unit (4).

Shooting mode selection unit 1 is composed of a plurality of switches, and operating the respective switches provided to change the position of the cursor (not shown) for selecting a shooting mode, selecting a desired shooting mode corresponding to the selected shooting mode The signal is output to the operation control unit 2.

The operation control unit 2 includes those as shown in Fig. 1A.

The central processing unit (CPU) 21 which executes a control operation to the bus 26 is connected to perform a control operation, and the ROM 22 and the RAM 23 are connected to each other to control the central processing unit 21. Programs, data, or data generated during control are stored.

The input / output port 24 is connected to the bus 26 to perform input / output operations of data or control signals, and the A / D converter 25 is connected to input / output data to the operation controller 2. B convert the state of the signal to an available state.

Therefore, the state of the signal output from the image capturing mode selector 1 is determined, the image capturing mode photographed by the user is determined, and the driving signal of the state is ramped so that the external user can recognize the determined image capturing mode. Output to negative (3).

As shown in FIG. 1B, the lamp unit 3 has a first resistor R31 connected to an output terminal of the operation control unit 2, and a second resistor R32 includes a power supply Vcc and a first terminal. It is connected between the resistor (R31).

Transistor T31 has an emitter terminal connected to a power supply Vcc and a base terminal connected to a resistor R31. The lamp L31 is connected between the collector terminal of the transistor T31 and the ground, and is mounted to the front portion of the camera body 100 as shown in FIG. 7.

Therefore, the lighting period of the lamp L31 changes in accordance with the control signal output from the operation control unit 2, and the lighting brightness changes, thereby displaying the preliminary light emission or the shooting mode state for red-eye prevention.

The flash unit 4 changes the operation state according to the control signal output from the operation control unit 2 to compensate for the lack of luminance when photographing a subject. The flash 41 of the flash unit 4 is mounted on the front portion of the camera body 100 as shown in FIG.

Next, the operation of the photographing mode display apparatus of the camera according to the embodiment of the present invention having the above structure will be described in detail with reference to FIGS. 2 to 6.

When the power required for the operation is supplied, the operation of each corresponding device is started, and the operation control unit 2 also controls the operation state of the lamp unit 3 in accordance with the shooting mode selected by the user.

Therefore, the central processing unit 21 of the operation control unit 2 reads the signal output from the shooting mode selection unit 1 (S11). The state of the read signal is then compared with the data stored in the RAM 23 to determine the shooting mode selected by the user. At this time, data corresponding to each shooting mode is already set and stored in the corresponding address of the RAM 23.

Then, the central processing unit 21 of the operation control unit 2 determines whether the shooting mode selected by the user is the normal shooting mode (S13).

That is, when the user does not perform a separate shooting mode selection operation by using the shooting mode selection unit 1, the user determines that the general shooting mode is selected without selecting a special shooting mode.

Therefore, when the determined shooting mode is the normal shooting mode, the central processing unit 21 of the operation control unit 2 does not operate the lamp unit 3 and the flash unit 4. Therefore, the central processing unit 21 of the operation control unit 2 returns to the first step without outputting separate control signals to the lamp unit 3 and the flash unit 4.

However, when the determined shooting mode is in the red-eye reduction mode, the central processing unit 21 of the operation controller 2 reads the red-eye reduction data corresponding to the red-eye reduction mode stored at the corresponding address of the RAM 23. The first setting period and the driving time of the driving pulse for the prevention mode are determined (S15).

Then, the pulse signal having the determined period is outputted to the ramp unit 3 for a predetermined time, that is, as many pulse signals as the set number (S16, S17).

Therefore, the driving signal in the pulse state is applied to the base terminal of the transistor T31 through the resistor R31 of the lamp unit 3, and the transistor T31 is turned on / off in accordance with the state of the driving signal applied. The switching is turned on and off according to the on / off operation of the transistor T31.

3A shows an operation timing in which the lamp L31 of the lamp unit 3 is turned on / off in response to the drive signal output in step S16. The horizontal axis of FIG. 3A represents time and the vertical axis represents the magnitude of the output voltage. As shown in FIG. 3A, the duty on time ① of the lamp L31 of the lamp unit 3 that is preliminarily emitted for preventing red eye is about 100 ms, and the duty off time ② is ) Is about 2 ms, and the preliminary emission time is about 800 ms.

Therefore, the transistor T31 of the lamp unit 3 is turned on for about 100 ms and turned off for about 2 ms, and the lamp L31 is turned on / off for 800 ms and blinks.

By the dot / light off operation of the lamp L31, preliminary light emission is performed to prevent red-eye.

Then, the CPU 21 of the operation controller 2 determines whether the set time, about 750 ms has elapsed after outputting the driving signal (S18). That is, after preliminary light emission using the lamp L31 to prevent red-eye, the state for executing the main light emission using the flash unit 4 is determined.

When the determined elapsed time reaches the set time, the central processing unit 21 of the operation control unit 2 outputs a control signal for operating the flash 41 to the flash unit 4.

Therefore, the flash unit 4 operates according to the control signal output from the central processing unit 21 of the operation control unit 2 so that the flash 41 emits light. Therefore, it is possible to take a high-quality picture to compensate for the lack of brightness.

However, when the photographing mode determined in step S14 is not the red-eye reduction mode, the CPU 21 of the operation controller 2 determines whether the self-timer mode.

When the state of the signal output from the shooting mode selector 1 corresponds to the self-timer mode, the central processing unit 21 of the operation controller 2 performs the second setting cycle and the setting time corresponding to the self-timer mode. Determine using the data stored in the corresponding address of the RAM 23 (S110).

Then, the central processing unit 21 of the operation control unit 2 outputs a pulse signal having a period set by the ramp unit 3 for a set time (S112, S113).

FIG. 4A shows the timing of turning on / off the lamp L31 of the lamp unit 3 which is turned on / off by the pulse signal output from the central processing unit 2 of the operation control unit 2.

As shown in FIG. 4A, the operation state of the lamp L31 of the lamp unit 3 for displaying the operation state of the self-timer is largely divided into two sections.

The first section indicates that the current photographing mode is a self-timer mode, and a signal having an operation period as shown in FIG. 4B is repeated about seven times.

As shown in Fig. 4B, the first duty on time 1 is about 3 ms and the duty off time 2 is about 1 ms. In addition, the 1 Hz blinking off time ③ is about 100 ms, and the 1 Hz blinking off time ④ is about 900 ms.

Therefore, the lamp L31 flashes at a set period for about 100 ms, and when 900 ms has elapsed, the lamp L31 blinks at a set period for about 100 ms again. This operation is repeated about seven times to turn on / off the operation for about seven seconds.

When such a turning on / off operation of the lamp L31 is performed seven times for about seven seconds, the process goes to the second B section. The second section is a section indicating that the photographing time is imminent by the self-timer mode, and has an operation period as shown in FIG. 4C.

As shown in Fig. 4C, the time between the sections ① to ③ is as shown in Fig. 4B, and the duty on time ① is about 3 ms, the duty off time ② is 1 ms, and the flashing on time ③ is shown. Is about 100 ms. However, the flashing off time (4) is about 150 ms. At this time, the blinking on time ③ and the blinking off time ④ have a period of 4 Hz that is executed four times per second.

Therefore, the lamp L31 flashes at a set period for about 100ms, and when 1500ms elapses, the lamp L31 blinks at a set period for about 100ms again. Repeat this operation about 12 times for 3 seconds.

Therefore, the lamp L31 of the lamp unit 3 flashes for a set time in the second setting cycle by a control signal output through the central processing unit 21 and the input / output port 24 of the operation control unit 2. Display the operation mode of the self-timer.

However, when the state of the shooting mode determined in step S110 is not the self-timer mode but the remote control mode, the central processing unit 21 of the operation control unit 2 is a state in which the battery charge state of the camera can normally perform the remote control operation. Judgment (S115, S116)).

When the determined state of charge of the battery maintains the state of charge enough to normally perform remote control shooting, the central processing unit 21 of the operation control unit 2 is converted to a control state for displaying the remote control shooting mode.

Therefore, in order for the central processing unit 21 of the operation control unit 2 to display the remote control control mode, the central processing unit 21 of the operation control unit 2 performs the third setting cycle and the setting time corresponding to the self-timer mode. It is determined using the data stored in the corresponding address of the RAM 23 (S117).

Then, the central processing unit 21 of the operation control unit 2 outputs a pulse signal having a period set by the ramp unit 3 for a set time (S118, S119).

FIG. 5 shows the operation timing of the lamp L31 of the lamp unit 3 that is turned on / off by the pulse signal output from the central processing unit 2 of the operation control unit 2.

As shown in FIG. 5, the duty on time ① is about 50 ms, the duty off time ② is 20 ms, and the dot / off time ③ is about 100 ms. In addition, since the photographing operation is performed about 2 seconds after receiving the remote control signal, the time ④ until the flashing section to display the status immediately after the remote control signal is received is about 900 ms.

Therefore, the lamp L31 blinks at a set cycle for about 100 ms to display the remote control status, and when 900 ms has elapsed, the lamp L31 blinks at a set cycle for about 100 ms again to immediately indicate that it is immediately after shooting the remote controller.

However, when the charge capacity of the battery determined in step S126 is not a charge capacity enough to perform remote control shooting, that is, when normal remote control shooting cannot be performed, the central processing unit 21 of the operation control unit 2 performs a first operation. 4 The setting cycle and the setting time are determined using the data stored in the corresponding address of the RAM 23 (S120).

Then, the central processing unit 21 of the operation control unit 2 outputs a pulse signal having a period set by the ramp unit 3 for a set time (S122).

At this time, the driving signal of the lamp L31 outputted to the lamp unit 3 enables the point / light off operation timing diagram of the lamp L31 as shown in the figure to be performed. Can indicate that the battery is low.

In addition, each driving timing of the lamp L31 shown in FIGS. 3 to 5 can be changed as long as it can display each shooting mode.

In this way, the shooting mode state of the camera is displayed by using the lamp L31 for executing preliminary light emission in order to prevent red-eye.

Next, referring to FIG. 2C, a control operation for displaying whether or not a normal photographing operation is performed by using the lamp L31 will be described.

In the embodiment of the present invention, the lamp L31 may indicate not only the shooting mode of the available camera but also whether the shooting operation of the subject has been normally performed.

Therefore, as shown in FIG. 2B, the CPU 21 of the operation controller 2 determines whether the photographing operation of the subject is completed in each set photographing mode (S21).

Since the photographing operation of the subject is controlled according to the control operation of the central processing unit 21 of the operation control unit 2, the central processing unit 21 reads input and output control signals to determine the photographing completion state of the subject.

Therefore, when it is determined that the photographing operation of the subject is completed by the central processing unit 21 of the operation control unit 2, the central processing unit 21 of the operation control unit 2 is stored at the corresponding address of the RAM 23. The fifth setting cycle and the setting time for reading the existing data and displaying the shooting completion state are determined (S22).

Then, the central processing unit 21 of the operation control unit 2 outputs the driving signal having the determined period to the ramp unit 3 for a set time (S23, S24).

Therefore, since the on / off operation state of the transistor T31 of the lamp unit 3 changes according to the driving signal applied, the on / off state of the lamp L31 changes.

6 shows the operation timing of the lamp L31 of the lamp unit 3 that is turned on / off by the pulse signal output from the central processing unit 2 of the operation control unit 2.

As shown in FIG. 6, the duty on time ① is about 30 ms, the duty off time ② is 10 ms, and the total operating time ③ is about 200 ms.

Therefore, the user can know whether the photographing operation as well as the photographing mode of the camera is completed by the operation state of the lamp L31 of the lamp unit 3.

The effect of this invention operating in this way can determine the shooting mode of the camera with the operating state of the lamp, thus providing various information to the user. By using a lamp that is already mounted to prevent red-eye, it reduces the cost of adding parts and increases the efficiency of using the parts.

In addition, since not only the shooting mode of the camera but also the normal shooting completion state can be grasped, the user determines whether the shooting operation is normally performed.

Claims (10)

A shooting mode selection unit configured to change an operation state according to a user's selection operation and to select a shooting mode desired by the user; Reading a signal applied from the photographing mode selection unit to determine a photographing mode selected by a user, determining a set period and a set time according to the determined photographing mode, and outputting a drive signal having a set period for a set period of time; An operation controller; A shooting mode display unit configured to be connected to the operation control unit and include a shooting mode display unit configured to determine an shooting mode selected by a user by changing an operation state according to a driving signal applied from the operation control unit; Device. The method of claim 1, wherein the shooting mode display unit, The on-state display device of the camera, characterized in that the lamp is turned on in accordance with the drive signal applied from the operation control unit, the lamp unit is pre-lighted to prevent red-eye. The method of claim 1, wherein the operation control unit, The red-eye prevention mode, the self-timer mode, the remote control mode, the camera output mode display device, characterized in that for changing the setting period and the set time of each output drive signal. The method of claim 1 or 3, wherein the operation control unit, When the determined shooting mode is the remote control shooting mode, the charge capacity of the battery is determined, and when the determined charging capacity of the battery fails to perform normal remote control shooting, the setting cycle and the setting time are determined to determine the driving signal having the setting cycle. The apparatus of claim 1, wherein the output mode is output to the shooting mode display unit for a set time. The method of claim 1, wherein the operation control unit, And if it is determined that the photographing operation of the subject is completed, determining the setting period and the setting time, and outputting a driving signal having the setting period to the shooting mode display unit for the setting time. An operation control unit which determines whether the photographing operation of the subject is completed, determines that the photographing operation of the subject is completed, determines a setting period and a setting time, and outputs a driving signal having the determined period during the setting time; And a shooting mode display unit connected to the operation control unit and configured to determine a subject and a shooting completion state by changing an operation state according to a driving signal applied from the operation control unit. . Determining a shooting mode determined by the user; Determining each set setting period and setting time according to the determined shooting mode; And outputting a driving signal having a determined set period for a set time. The method of claim 7, wherein The photographing mode includes a red-eye reduction mode, a self-timer mode, and a remote control mode, and the setting period and the setting time of each output driving signal are varied according to each determined shooting mode. The method of claim 8, wherein when the determined shooting mode is a remote control shooting mode, Determining a charge capacity of the battery; Determining a setting cycle and a setting time when the determined charge capacity of the battery fails to perform normal remote control shooting; And outputting a driving signal having a set period for a set time period. Determining whether the photographing operation of the subject is completed; If it is determined that the photographing operation of the subject is completed, determining a setting cycle and a setting time; And outputting a driving signal having a determined set period for a set time.