KR101086406B1 - Camera executing reduced power on sequence - Google Patents

Abstract

The camera according to the present invention is characterized in that the main power is supplied when the shutter signal is input while the standby power is supplied, and the photographing operation is performed when the shutter signal is input while the main power is supplied.

According to the camera of the present invention, there is a convenience in that photographing can be easily performed by inputting a shutter switch without operating a power switch in a power-off state.

Description

Camera executing reduced power on sequence

1 is a block diagram illustrating a configuration of an exemplary digital camera to which the concept of the present invention can be applied.

2 is a block diagram illustrating a configuration of a digital camera according to an exemplary embodiment of the present invention.

FIG. 3 is a flowchart for describing a main power supply order performed by the controller of the digital camera of FIG. 2.

The present invention relates to a camera, and more particularly, to a camera that can easily perform shooting in a power-off state.

In the conventional camera, since the user needs to perform a two-stage operation of pressing the shutter switch after turning on the power switch in order to take a picture in the power-off state, it is inconvenient when the user wants to take a quick picture.

 An object of the present invention is to provide a camera that can easily perform shooting without turning on the power switch in the power off state.

The camera according to the present invention for achieving the above technical problem is that the main power is supplied when the shutter signal is input in a state where standby power is supplied, and performing a photographing operation when the shutter signal is input in a state where the main power is supplied. It is done.

The camera power supply unit for outputting a static power source; A standby power supply unit connected to the power unit to supply standby power in a state in which main power is cut off; A main power supply unit converting the electrostatic source into a plurality of DC voltages used in a digital camera and outputting the converted voltage; A shutter switch having a first switch and a second switch to generate a shutter signal by a user's operation; A power switch for outputting a power switching instruction signal of the digital camera by a user's operation; Outputs a control signal for supplying main power in response to the power switching instruction signal or the shutter signal in a standby power supply state, and outputs a control signal for shutting off main power in response to the power switching command signal in a main power supply state A control unit; And a switching unit for connecting or disconnecting the power supply unit and the main power supply unit in response to the control signal.

Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote components that perform the same function.

The basic concept of the camera of the present invention is that the main power is supplied when the shutter signal is input while the standby power is supplied, and the photographing operation is performed when the shutter signal is input while the main power is supplied, thereby the main power is turned off. By simply pressing the shutter switch, the user can easily perform the shooting.

1 is a block diagram illustrating a configuration of an exemplary digital camera to which the concept of the present invention can be applied.

The optical system OPS including the lens unit and the filter unit optically processes light from a subject. The lens unit in the optical system OPS includes a zoom lens, a focus lens, and a compensation lens.

A photoelectric conversion unit (OEC) of a charge coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) converts light from an optical system (OPS) into an electrical analog signal. Here, the digital signal processor 7 controls the timing circuit 2 to control the operation of the photoelectric converter OEC and the analog-to-digital converter 1. The CDS-ADC (Correlation Double Sampler and Analog-to-Digital Converter) element 1 as an analog-to-digital converter processes the analog signal from the photoelectric converter (OEC), removes the high frequency noise, and adjusts the amplitude. After that, it is converted into a digital signal. The digital signal processor 7 processes the digital signal from the CDS-ADC element 1 to generate a digital video signal classified into luminance and chroma signals.

The DRAM (Dynamic Random Access Memory) 4 temporarily stores digital video signals and other temporary processing data from the digital signal processor 7.

The EEPROM (Electrically Erasable Programmable Read Only Memory) 5 stores algorithms and setting data necessary for the operation of the digital signal processor 7. The memory card of the user is attached to and detached from the memory card interface 6.

The digital image signal from the digital signal processor 7 is input to the LCD driver 14, whereby the image is displayed on the color LCD panel 17. FIG.

On the other hand, the digital video signal from the digital signal processor 7 can be transmitted by serial communication via the USB (Universal Serial Bus) connection 18 or the RS232C interface 8 and its connection 19, and the video filter ( 9) and through the video output unit 20 can be transmitted as a video signal.

The audio processor 13 outputs the audio signal from the microphone MIC to the digital signal processor 7 or the speaker SP, and outputs the audio signal from the digital signal processor 7 to the speaker SP.

The user input unit INP may include a shutter button, a mode selection button, a function selection button, a zoom button, a direction movement button, and the like. The user input unit INP is operated by the user to generate a command for performing each function according to the user's instruction.

The microcontroller 12 controls the lens driver 10, whereby the zoom motor M _Z , the focus motor M _F , and the aperture motor M _A are zoom lenses in the optical system OPS, The focus lens and the aperture are driven respectively. The light emitting unit LAMP driven by the microcontroller 12 may include a self-timer lamp, an auto-focus lamp, a flash standby lamp, and the like. On the other hand, the microcontroller 12 drives the flash 15 by controlling the operation of the flash controller 11 in accordance with the signal from the flash-light amount sensor 16.

The digital camera to which the present invention can be applied does not have to include all the components of FIG. 1, and those skilled in the art may delete some of the components, add another component, or modify some components according to the specification. I will understand.

2 is a block diagram illustrating a configuration of a digital camera according to an exemplary embodiment of the present invention. The camera unit 100 including the control unit 104, the shutter switch 104, the standby power supply unit 110, and a battery are shown in FIG. The unit 114, the switching unit 116, and the main power supply unit 120 may be provided, and the power switch 122 may be further provided.

The camera unit 100 may include components of the digital camera illustrated in FIG. 1.

The controller 102 included in the camera unit 100 may be implemented as the microcontroller 12 or the digital signal processor (DSP) 7 of FIG. 1.

The power supply unit 114 supplies main power to the camera unit, and is connected to standby power when the main power is cut off. The power supply unit 114 is connected to a battery or an AC adapter to supply voltage to the camera.

The standby power unit 110 is connected to the battery unit 114 when the switching unit 116 is turned off to supply standby power to the control unit 104.

The shutter switch 104 includes a first switch S1 and a second switch S2 to output the first shutter signal 106 or the second shutter signal 108 by a user's manipulation. When the shutter switch 104 is pressed halfway, the first switch S1 is turned on and the first shutter signal 106 is generated. When the shutter switch 104 is fully pressed, the second switch S2 is turned on. The second shutter signal 108 is generated. When performing the photographing operation, when the first shutter signal 106 is input, the camera performs auto focus, checks the flash charge state, and when the second shutter signal 108 is input, the camera performs recording and stores the captured image data in memory. Save to card.

The main power supply 120 is connected to the power supply 114 when the switching unit 116 is turned on. The main power supply unit 120 converts the input power into voltages V ₁ to V _n of various specifications required by the camera unit 100 and supplies the input power to the camera unit 100. The main power supply unit 120 includes a DC / DC converter that converts input power into various voltages.

The power switch 122 outputs the power switching instruction signal 124 of the digital camera to the controller 102 by a user's manipulation. The controller 102 outputs the control signal 118 when the power switching instruction signal 124 is input. At this time, the switching unit 116 is turned on in response to the control signal 118.

The controller 102 outputs a control signal 118 for supplying main power in response to the power switching instruction signal 124 or the shutter signals 106 and 108 in the standby power supply state. In addition, the control unit 102 outputs a control signal 118 that cuts off the main power in response to the power switching instruction signal 124 in the main power supply state. The control unit 102 may be implemented to output a control signal 118 for supplying main power when the first shutter signal 106 is input in the standby power supply state. In addition, the controller 102 may be implemented to output the control signal 118 for supplying the main power only when the second shutter signal 108 is input in the standby power supply state.

The switching unit 116 connects or disconnects the power supply unit 114 and the main power supply unit 120 in response to the control signal 118 output from the control unit 102.

 In the present invention, the shutter switch 104 has a function equivalent to the power switch 122 in the standby power input state, and returns to the shutter function for performing the original photographing operation in the main power input state.

FIG. 3 is a flowchart for describing a series of operations performed by the controller 104 of FIG. 2 from a power off state to supply power to the digital camera of FIG. 2.

In a state in which the main power of the digital camera is turned off and only standby power is supplied (S100), the controller 104 continuously determines whether the shutter signals 106 and 108 are input (S102).

If it is determined that the shutter signals 106 and 108 are input, the controller 104 turns on the switching unit 116 (S104). At this time, the switching unit 116 is turned on so that the battery unit 114 and the main power supply unit 120 are connected.

Then, main power is supplied to the control unit 104 (S106). After the step S106, the controller 104 sets the camera unit 100 (S108) to end the power input sequence and enter the shooting mode.

When the shutter signals 106 and 108 are input to the controller 104 after the power input sequence of FIG. 3 ends, the photographing operation is performed.

The above embodiment has been described with reference to a digital camera, but is not limited thereto. Those skilled in the art will appreciate that the present invention can be applied not only to digital cameras but also to film cameras requiring power.

The best embodiments have been disclosed in the drawings and specification above. Although specific terms have been used herein, they are used only for the purpose of describing the present invention and are not used to limit the scope of the present invention as defined in the meaning or claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

As described above, according to the camera of the present invention, there is a convenience in that photography can be easily performed by a shutter switch input in a power-off state.

The invention is not limited to the examples described above and represented in the drawings. Those skilled in the art taught by the above-described embodiments, many modifications to the above-described embodiments are possible by substitution, erasure, merging, etc. within the scope and object of the present invention described in the following claims.

Claims (2)

A main power supply for supplying main power; Standby power supply unit for supplying standby power in the state that the main power is cut off; A control unit which controls to supply the main power when a shutter signal is input while the standby power is supplied; And An optical system and a photoelectric conversion unit, the camera comprising a photographing unit for performing a photographing operation when the shutter signal is input in the main power supply state. The method of claim 1, A power supply unit configured to output an electrostatic source to the main power supply unit and the standby power supply unit; A shutter switch having a first switch and a second switch to generate a shutter signal by a user's operation; A power switch for outputting a power switching instruction signal of the digital camera by a user's operation; And Further comprising a switching unit for connecting or disconnecting the power supply and the main power supply in accordance with a control signal, The main power supply unit converts the electrostatic source into a plurality of DC voltages used in the digital camera, and outputs the same. The controller may cause the main power supply to supply the main power in response to the power switching command signal or the shutter signal in a standby power supply state, and the main power in response to the power switching command signal in a main power supply state. And outputting the control signal to the switching unit to cut off.

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