JP3828320B2 - Digital camera - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a digital camera, and more particularly, in a digital camera that opens and closes a door that covers a liquid crystal monitor in conjunction with ON / OFF of a power switch, it is possible to easily perform shooting with the door closed. It relates to digital cameras.
[0002]
[Prior art]
Recently, digital cameras equipped with a liquid crystal monitor have become widespread, and various techniques related to protective members for the liquid crystal monitor have been proposed. For example, in the “monitor protective cover” disclosed in Japanese Patent Laid-Open No. 10-98635, the monitor protection having a function of protecting the monitor unit is detachably attached to a camera-integrated recording / reproduction device including a recording / reproduction unit and a monitor unit. There has been disclosed a technique in which a cover is provided and an openable / closable blind is provided on a surface of the monitor protective cover facing the monitor so that the monitor can be visually recognized.
[0003]
Further, in “Electronic Still Camera with Liquid Crystal Monitor” of Japanese Patent Laid-Open No. 10-98636, a liquid crystal monitor that displays a captured image or a reproduced image of a recorded image on a recording medium is disposed at a substantially central portion on the back of the camera, There is disclosed a technique in which an optical viewfinder for confirming the above is provided at the upper part on the back of the camera and a protective projection is provided around the liquid crystal monitor.
[0004]
In addition, in the “still video camera” disclosed in Japanese Patent Application Laid-Open No. 1-117440, the rear door that protects the monitor is switched to the playback state with the front of the monitor opened, while the rear door covers the front of the monitor. A technique for switching to a state is disclosed.
[0005]
Further, recently, a technique for opening and closing a door that covers a liquid crystal monitor in conjunction with ON / OFF of a power switch is also known.
[0006]
[Problems to be solved by the invention]
The present invention has been made in view of the above, and in a digital camera that opens and closes a door that covers a liquid crystal monitor in conjunction with ON / OFF of a power switch, it is possible to easily perform photographing with the door closed. An object is to provide a possible digital camera.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problem, the invention according to claim 1 is a digital camera that captures a subject image and obtains image data, and includes a display unit including a monitor screen for displaying the image data, and power-on. First and second power switches for instructing power, power control means for turning on the main body according to the instructions of the first power switch or the second power switch, and a door covering the monitor screen A member and an opening / closing mechanism that opens and closes the door member in conjunction with ON / OFF of the first power switch, and the power control means is configured to turn on the main power when the first power switch is turned on. On the other hand, when the first power switch is turned off and the second power switch is turned on, the main body power is turned on.
[0008]
According to a second aspect of the present invention, in the digital camera according to the first aspect, the second power switch is also used as another input switch.
[0009]
According to a third aspect of the present invention, in the digital camera according to the second aspect, another input switch that functions as the second power switch can be selected.
[0010]
According to a fourth aspect of the present invention, in the digital camera according to the first aspect, the digital camera includes a mode selection unit for selecting a recording mode for capturing and recording image data and other modes, and the power control unit includes: Only when the recording mode is selected by the mode switching means, the input of the second power switch is accepted.
[0011]
According to a fifth aspect of the present invention, in the digital camera according to the first aspect, the validity / invalidity of the second power switch can be selected.
[0012]
According to a sixth aspect of the present invention, in the digital camera according to the first aspect, the power control means turns on or off the main body power when the second power switch is pressed for a predetermined time. is there.
[0013]
According to a seventh aspect of the present invention, in the digital camera according to the sixth aspect, the fixed pressing time can be arbitrarily set.
[0014]
According to an eighth aspect of the present invention, in the digital camera according to the fourth aspect of the present invention, when the main body power is turned on by the second power switch, the power control means is the mode switching means and the other When the mode is selected, the main body power is turned off.
[0015]
According to a ninth aspect of the present invention, in the digital camera according to the first aspect, the power control means is configured such that the second power switch is turned on when the first power switch is turned off. In this case, the display means is not turned on.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Exemplary embodiments of a digital camera according to the present invention will be described below in detail with reference to the accompanying drawings.
[0017]
A mechanical configuration of the digital camera according to the present embodiment will be described with reference to FIGS. 1 is a rear view showing an external configuration of a digital camera, FIGS. 2 and 3 are perspective views of a portion related to the door mechanism of the digital camera in FIG. 1, and FIG. 4 is a longitudinal sectional view of a door member portion of the door mechanism. .
[0018]
FIG. 1 shows the back surface of the camera body 100a of the digital camera 100. On the back surface of the camera body 100a, as shown in the figure, a memory card door 1, a release button 2, a rotation mode dial 3, a viewfinder eyepiece window 5 are shown. A battery compartment cover 6, a door member 7, a main power button 8, a DISPLAY button 30, a MENU button 31, and an ENTER button 32 are provided.
[0019]
2 to 4 also show the details related to the door mechanism in detail. The switch operating portion 11, the shaft 12, the shaft 13, the rotating lever 14, the shaft 15, the click leaf spring 16, and the lower side. A rail portion 21, an upper rail portion 22, a liquid crystal monitor 122, and a main power switch 129 are shown. The switch operating portion 11, the shaft 12, the shaft 13, the rotation lever 14, the shaft 15, the click leaf spring 16, the lower rail portion 21, the upper rail portion 22, and the door member 7 constitute a door mechanism.
[0020]
The memory card door 1 is a door that covers the accommodating portion of the memory card 150. The release button 2, the rotation mode dial 3, the DISPLAY button 30, the MENU button 31, and the ENTER button 32 are included in the operation unit 123 (see FIG. 5). The release button 2 is an operation unit for performing a release operation at the time of shooting. The rotation mode dial 3 is a SETUP mode for setting the operating conditions of the digital camera, a recording mode for shooting and recording an image, and for reproducing an image recorded on the memory card 150 (see FIG. 5). It is an operation unit for switching and selecting a playback mode and an erase mode for erasing an image recorded on the memory card 150 (see FIG. 5). The MENU button 31 and the ENTER button 32 are operated in association with the selected position of the rotation mode dial 3 to display various mode states, captured images, and reproduced images on the monitor screen 122a of the liquid crystal monitor 122, and to change the operation mode. This is an operation unit for changing and selecting, and selecting a display image.
[0021]
The viewfinder eyepiece window 5 is an eyepiece part of an optical viewfinder for observing the imaging field as an optical image. The electric chamber lid 6 is a lid of a battery chamber that houses the battery 127, and the battery chamber lid 6 is opened and closed when the battery 127 is replaced.
[0022]
The door member 7 constitutes a door mechanism, which will be described later, and is opened and closed by the door mechanism. The door member 7 covers the monitor screen 122a of the liquid crystal monitor 122 in the closed state as shown in FIGS. 1, 2, and 4, as shown in FIG. The monitor screen 122a can be used in the open state.
[0023]
The main power button 8 is an operation member for turning on / off the main power switch 129, and slightly protrudes from the back surface of the camera body 100a so as to be slidable. The main power switch 129 is also referred to as a first power switch.
[0024]
1, 2, and 4 show a state in which the door mechanism is closed, that is, a state in which the monitor screen 122 a of the liquid crystal monitor 122 is covered with the door member 7. At this time, the power switch 129 shown in FIG. 2 is in an off state because it is not pressed by the switch operating unit 11 that operates integrally with the main power button 8. In this state, the user carries the digital camera 100 and carries it as desired. When the user uses the digital camera 100 to shoot or play back, the main power button 8 is slid rightward in FIG. 1 and moved to the ON position where “ON” is displayed.
[0025]
The main power button 8 is engaged with a shaft 12 protruding from the rotary lever 14. The rotating lever 14 is pivotally supported on the shaft 13 at one end, and the other end, that is, the rotating end of the rotating lever 14 is engaged with a shaft 15 protruding from the door member 7. . Therefore, when the main power button 8 is slid, the rotation lever 14 is rotated in the direction of the arrow D1, and the door member 7 is moved in the direction of the arrow D2, resulting in a state as shown in FIG.
[0026]
In the state of FIG. 3, the main power switch 129 is pressed by the switch operating unit 11 provided integrally with the main power button 8 and is turned on. Further, the door member 7 is retracted from the monitor screen 122 a of the liquid crystal monitor 122 to be in an open state, and the monitor screen 122 a is not covered with the door member 7.
[0027]
At the time of shooting, in this state, the rotation mode dial 3 is operated to set the shooting position, the optical viewfinder is observed through the viewfinder eyepiece window 5, the composition is determined, and the release button 2 is pressed to perform shooting. At this time, if the DISPLAY button 30 is pressed, an image being shot is displayed on the monitor screen 122 a of the liquid crystal monitor 122. The monitor screen 122a can be used as an electronic viewfinder, and the monitor screen 122a can be observed to determine the composition and take a picture.
[0028]
At the time of playback, the playback mode is displayed on the monitor screen 122a of the liquid crystal monitor 122 by operating the rotation mode dial 3 to set the playback position. At this time, the display screen can be selected by operating the MENU button 31. Inside the camera body 100a, the click leaf spring 16 fixed integrally to the main power button 8 engages with an unevenness (not shown) provided on the inner surface of the camera body 100a, so that the main power button 8 is A click force is generated to lock the on position (ON) and the off position labeled “OFF”.
[0029]
The door member 7 is guided so as to be slidable inside the camera body 100a, and is housed inside the camera body 100a in the state of FIG. As shown in the figure, the main power button 8 is disposed substantially at the lower center of the back of the camera body 100a. The main power button 8 is operated by the link mechanism using the rotation lever 14 of the door mechanism to operate the door member 7. The movement amount 8 is smaller than the movement amount of the door member 7. In the case of FIGS. 1 to 3, the slide movement amount of the main power button 8 and the slide movement amount of the door member 7 are in a ratio of about 1: 4.
[0030]
As shown in the cross-sectional view of FIG. 4, a liquid crystal monitor 122 is disposed inside the camera body 100a with the monitor screen 122a facing outward, and a door for covering the monitor screen 122a outside. A member 7 is arranged. The door member 7 moves with its upper and lower edges guided by a lower rail portion 21 and an upper rail portion 22 provided in the camera body 100a. In this case, the material of the door member 7 is metal. If the door member 7 is made of metal, the door member 7 can be formed thinner than that made of plastic, and high strength can be obtained. Therefore, the dimension T from the rear surface of the liquid crystal monitor 122 to the rear surface of the camera body 100a can be formed as thin as about 3 mm.
[0031]
FIG. 5 is a block diagram of the digital camera according to the present embodiment. In the figure, reference numeral 100 denotes a digital camera. The digital camera 100 includes a lens system 101, a mechanical mechanism 102 including an aperture / filter unit, a CCD 103, a CDS circuit 104, a variable gain amplifier (AGC amplifier) 105, an A / A D converter 106, IPP 107, DCT 108, coder 109, MCC 110, DRAM 111, PC card interface 112, CPU 121, liquid crystal monitor 122, operation unit 123, SG (control signal generation) unit 126, battery 127, DC-DC converter 128, focus A driver 131, a pulse motor 132, a zoom driver 133, a pulse motor 134, and a motor driver 135 are provided. A detachable PC card 150 is connected via the PC card interface 112.
[0032]
The lens unit includes a mechanical mechanism 102 including a lens 101 system, an aperture / filter unit, and the like. A mechanical shutter of the mechanical mechanism 102 performs simultaneous exposure of two fields. The lens system 101 is composed of, for example, a varifocal lens, and includes a focus lens system 101a and a zoom lens system 101b.
[0033]
The focus driver 131 drives the focus pulse motor 132 according to the control signal supplied from the CPU 121 to move the focus lens system 101a in the optical axis direction. The zoom driver 131 drives the zoom pulse motor 134 according to the control signal supplied from the CPU 121 to move the zoom lens system 101b in the optical axis direction. Further, the motor driver 135 drives the mechanical mechanism 102 in accordance with a control signal supplied from the CPU 121, and sets, for example, an aperture value of the aperture.
[0034]
A CCD (charge coupled device) 103 converts an image input via the lens unit into an electrical signal (analog image data). A CDS (correlated double sampling) circuit 104 is a circuit for reducing noise in the CCD type image pickup device.
[0035]
In addition, the AGC amplifier 105 corrects the level of the signal that has been correlated and sampled by the CDS circuit 104. The gain of the AGC amplifier 105 is set by the CPU 121 when setting data (control voltage) is set in the AGC amplifier 105 via a D / A converter built in the CPU 121. Further, the A / D converter 106 converts analog image data from the CCD 103 input via the AGC amplifier 105 into digital image data. That is, the output signal of the CCD 103 is converted into a digital signal through the CDS circuit 104 and the AGC amplifier 105 and by the A / D converter 106 at an optimum sampling frequency (for example, an integer multiple of the subcarrier frequency of the NTSC signal). Is done.
[0036]
An IPP (Image Pre-Processor) 107 that is a digital signal processing unit divides the digital image data input from the A / D converter 106 into color difference signals (Cb, Cr) and luminance signals (Y), and performs various processes and corrections. I do. An IPP (Image Pre-Processor) 107 creates a video signal based on the color difference signals (Cb, Cr) and the luminance signal (Y) and outputs the video signal to the liquid crystal monitor 122. The DCT 108 and the coder (Huffman Encoder / Decoder) are, for example, orthogonal transformation / inverse orthogonal transformation, which is a process of JPEG-compliant image compression / decompression, and Huffman encoding / decoding, which is a process of JPEG-compliant image compression / decompression. To make it.
[0037]
Further, an MCC (Memory Card Controller) 110 temporarily stores the compressed image and records it on the PC card 150 or reads it from the PC card 150 via the PC card interface 112.
[0038]
The CPU 121 uses a RAM (not shown) as a work area according to a program stored in a ROM (not shown), and follows an instruction from the operation unit 123 or an external operation instruction such as a remote controller (not shown). Control all operations. Specifically, the CPU 121 controls a photographing operation, a reproducing operation, an automatic exposure (AE) operation, an automatic white balance (AWB) adjustment operation, an AF operation, and the like.
[0039]
The camera power supply unit includes a battery 127 and a DC-DC converter 128. For example, a NiCd, nickel metal hydride, lithium battery or the like is used as the battery 127, and the output of the battery 127 is converted into a desired voltage by the DC-DC converter 128 and supplied to each unit. The CPU 121 detects ON / OFF of the main power switch 129 (first power switch) or ON / OFF of a second power switch described later, and controls power supply to each unit by the DC-DC converter 128. Then, control of turning on / off the power source of the digital camera is performed (see FIGS. 7 and 8). In this case, when the power is turned on in response to the main power switch 129 (first power switch) being turned on, the CPU 121 supplies power to each part of the digital camera while turning on the second power switch. When power is turned on accordingly, power is supplied to each part of the digital camera excluding the liquid crystal monitor 122.
[0040]
The liquid crystal monitor 122 is used to display digital image data before and during shooting in real time and use it as an electronic viewfinder, or to reproduce and display the digital image data after shooting and the decompressed restored image data. It is done. The operation unit 123 includes the release button 2, the rotation mode dial 3, the DISPLAY button 30, the MENU button 31, the ENTER button 32, and the like described above, and is for giving operation instructions to the CPU 121.
[0041]
As described above, the above-described digital camera 100 captures the recording mode for recording the image data obtained by imaging the subject on the PC card 150, the playback mode for reproducing the image data recorded on the PC card 150, and the imaging mode. A monitoring mode for directly displaying image data on the liquid crystal monitor 122 is provided.
[0042]
Next, the setting of the second power switch will be described on the monitor screen 122a of the liquid crystal monitor 122. When “SETUP mode” is selected with the rotation mode dial 3 in the power-on state, the SETUP menu is displayed on the monitor screen 122a, and the second power switch setting is selected from the SETUP menu. Then, for example, a second power switch setting screen as shown in FIG. 6 is displayed.
[0043]
On the setting screen of the second power switch shown in FIG. 6, the user selects “second power switch ON / OFF”, “second power switch pressing time (1 second, 2 seconds, 3 seconds)”, “Select a key (DISPLAY button 30, MENU button 31, ENTER button 32) to be used as the second power switch” is performed.
[0044]
With this “second power switch ON / OFF” setting, the validity / invalidity of the second power switch is set. In addition, the “pressing time of the second power switch” setting sets the pressing time during which the key operation of the second power switch is valid. In addition, a key that functions as a second power switch is set in “selection of key used as second power switch”. In the example shown in the figure, the second power switch is “ON”, the pressing time of the second power switch is “2 seconds”, and the “DISPLAY button 30” is selected as a key used as the second power switch. Yes.
[0045]
As described above, in the digital camera 100 configured as described above, the door member 7 covering the monitor screen 122a of the liquid crystal monitor 122 is opened and closed in conjunction with the operation of the main power button 8. Then, the monitor screen 122a of the liquid crystal monitor is covered with the door member 7, and the protection of the monitor screen 122a of the liquid crystal monitor 122 when carried is reliably performed with a simple operation. Further, when the main power button 8 is turned on, the door member 7 does not cover the monitor screen 122a. Therefore, even when the position of the rotation mode dial 3 is switched from recording to reproduction in this state, the door member 7 It is possible to shift to the reproduction mode without an extra operation of opening 7.
[0046]
Next, the operation of turning on the power from the power off (photographable state) using the second power switch will be described with reference to the flowchart of FIG. FIG. 7 is a flowchart for explaining the operation of turning on the power (capable of photographing) with the second power switch. The CPU 121 performs processing shown in the following flowchart at regular time intervals while the power is off.
[0047]
In FIG. 7, the CPU 121 first reads the key state of the first power switch (step S100), and determines whether or not the first power switch (main power switch 127) is ON (step S101). As a result of this determination, if it is determined that the first power switch is ON, the process proceeds to step S108 to turn on the camera power, while if it is determined that the first power switch is OFF, The process proceeds to step S102.
[0048]
In step S102, the CPU 121 reads the operation mode set by the rotation mode dial 3 and determines whether or not the operation mode is the recording mode (step S103). As a result of this determination, if the operation mode is a mode other than the recording mode, the flow is terminated. If the operation mode is the recording mode, the process proceeds to step S104.
[0049]
In step S104, the CPU 121 determines whether the setting of the second power switch is valid. As a result of this determination, if it is determined that the setting of the second power switch is invalid, the flow ends. On the other hand, if it is determined that the setting of the second power switch is valid, the process proceeds to step S105.
[0050]
In step S105, the CPU 121 reads the key state of the second power switch and determines whether or not the second power switch is pressed (step S106). As a result of this determination, if it is determined that the first power switch is not pressed, the flow ends. If it is determined that the second power switch is pressed, the process proceeds to step S107. .
[0051]
In step S107, the CPU 121 counts the pressing time of the second power switch, and determines whether the pressing time of the second power switch has passed the set effective pressing time (step S108). As a result of the determination, when the pressing time of the second power switch has not exceeded the set effective pressing time, the process returns to step S100, while the pressing time of the second power switch is set. When the valid pressing time has elapsed, the CPU 121 turns on the main body power (step S109) and ends the flow. In this case, power is not supplied to the liquid crystal monitor 122.
[0052]
That is, in the above process, the second power switch is set in a state where the first power switch is OFF, the operation mode is set to the recording mode, and the second power switch is set to be valid. When the effective pressing time is pressed, the power of the digital camera is turned on to shift to a photographing enabled state.
[0053]
Next, the operation of switching from the power ON state (photographable state) to the power OFF state by the second power switch will be described with reference to the flowchart of FIG. FIG. 8 is a flowchart for explaining the operation of turning off the power by the second power switch. The CPU 121 performs processing shown in the following flowchart at regular time intervals while the power is on.
[0054]
In FIG. 8, first, the CPU 121 reads the key state of the first power switch (step S200), and determines whether or not the first power switch is ON (step S201). If it is determined that the first power switch is turned on as a result of the determination, the flow is terminated. If it is determined that the first power switch is turned off, the process proceeds to step S202. .
[0055]
In step S202, the CPU 121 reads an operation mode set by the rotation mode dial 3 and determines whether or not the operation mode is a recording mode (step S203). As a result of this determination, if the operation mode is a mode other than the recording mode, the process proceeds to step S209 and the main body power is turned off. On the other hand, if the operation mode is the recording mode, the process proceeds to step S204. .
[0056]
In step S204, the CPU 121 determines whether the setting of the second power switch is valid. As a result of this determination, if it is determined that the setting of the second power switch is invalid, the process proceeds to step S209 to turn off the main body power supply, whereas if it is determined that the setting of the second power switch is valid, step S209 is performed. The process proceeds to S205.
[0057]
In step S205, the CPU 121 reads the key state of the second power switch, and determines whether or not the second power switch is pressed (step S206). As a result of this determination, if it is determined that the second power switch is not pressed, the flow ends. If it is determined that the second power switch is pressed, the process proceeds to step S207. .
[0058]
In step S207, the CPU 121 counts the pressing time of the second power switch, and determines whether the pressing time of the second power switch has passed the set effective pressing time (step S208). As a result of the determination, when the pressing time of the second power switch has not exceeded the set effective pressing time, the process returns to step S200, while the pressing time of the second power switch is set. When the valid pressing time has elapsed, the CPU 121 turns off the main body power (step S209) and ends the flow.
[0059]
That is, in the above processing, the first power switch is OFF, the operation mode is set to the recording mode, the second power switch is set to be valid, and the photographing is possible by pressing the second power switch. In this state, when the effective power-on time for which the second power switch is set is pressed, the power of the digital camera is turned off. Further, the digital camera is turned off when the operation mode is changed to a mode other than the recording mode while the second power switch is pressed and the camera is ready to shoot.
[0060]
As described above, in the present embodiment, the door member 7 that opens and closes in conjunction with the ON / OFF of the first power switch is closed (the first power switch is OFF). Since the main body is turned on when the second power switch is turned on, the power can be turned on with the door member 7 closed. As a result, it is possible to prevent the liquid crystal monitor 122 from being soiled, and it is possible to perform photographing while the door member 7 is closed.
[0061]
In the present embodiment, when the second power switch is turned on and the power is turned on, the liquid crystal monitor 122 is not turned on. It is not necessary to supply power, and power consumption can be reduced.
[0062]
In the present embodiment, since it is possible to select whether the second power switch is enabled or disabled on the setting screen, whether or not the second power switch is used to turn on the power according to the user's needs. The user-friendliness is improved.
[0063]
In the present embodiment, since the second power switch is also used as another input switch, there is no need to provide a dedicated second power switch, which is advantageous in terms of space and cost.
[0064]
In the present embodiment, since another input switch functioning as the second power switch can be selected on the setting screen, the user can freely consider the operability or erroneous operation as the second power switch. A functioning input switch can be arbitrarily selected, and the convenience of the user is improved.
[0065]
In the present embodiment, since the main body power is turned on or off when the second power switch is pressed for a predetermined time, it is possible to prevent the power from being inadvertently turned on.
[0066]
Further, in the present embodiment, since the above-described pressing time can be selected on the setting screen, the user can freely set the time during which the input of the second power switch is valid, and the user convenience is improved. In other words, the user may set the pressing time short when desiring to easily turn on the power, and set the pressing time long to prevent the power from being turned on carelessly.
[0067]
In the present embodiment, the input of the second power switch is accepted only when the recording mode is selected with the rotation mode dial 3, so that the power is inadvertently turned on in a mode other than the recording mode. Can be prevented.
[0068]
In the present embodiment, when the second power switch is pressed and the power source is ONN, when a mode other than the recording mode is selected with the rotation mode dial 3, the main unit power source In the state where the door member is closed, for example, when the playback mode is selected, the liquid crystal monitor is turned on with the door member closed to prevent unnecessary power consumption. it can.
[0069]
The present invention is not limited to the above-described embodiment, and can be appropriately modified and executed without departing from the gist of the invention.
[0070]
【The invention's effect】
According to the first aspect of the present invention, the door member that covers the monitor screen and the opening / closing mechanism that opens and closes the door member in conjunction with ON / OFF of the first power switch are provided. When the switch is turned on, the main body power is turned on. On the other hand, when the first power switch is turned off and the second power switch is turned on, the main body power is turned on. Therefore, it is possible to turn on the power with the door member closed, and as a result, it is possible to prevent the LCD on the monitor screen from being soiled and to easily take an image with the door member closed. It becomes possible.
[0071]
According to the invention of claim 2, in the digital camera of claim 1, since the second power switch is also used as another input switch, the effect of the invention of claim 1 is achieved. In addition, there is no need to provide a dedicated second power switch, which is advantageous in terms of space and cost.
[0072]
According to the invention of claim 3, in the digital camera of claim 2, the other input switch functioning as the second power switch can be selected, so that the effect of the invention of claim 2 is achieved. In addition, the user can freely select an input switch that functions as the second power switch in consideration of operability or erroneous operation, and the user-friendliness is improved.
[0073]
According to a fourth aspect of the present invention, the digital camera according to the first aspect further comprises mode selection means for selecting a recording mode for capturing and recording image data and other modes, and the power control means is Since the input of the second power switch is accepted only when the recording mode is selected by the mode switching means, in addition to the effect of the invention according to claim 1, it is inadvertent when it is not in the recording mode. Can be prevented from being turned on.
[0074]
According to the invention according to claim 5, in the digital camera according to claim 1, since the validity / invalidity of the second power switch can be selected, in addition to the effect of the invention according to claim 1, The user can select whether or not to turn on the power using the second power switch according to the user's needs, and the convenience of the user is improved.
[0075]
According to a sixth aspect of the present invention, in the digital camera according to the first aspect, the power control means turns on or off the main body power when the second power switch is pressed for a predetermined time. Therefore, in addition to the effect of the invention described in claim 1, it is possible to prevent the power from being turned on carelessly.
[0076]
According to the invention according to claim 7, in the digital camera according to claim 6, since the fixed pressing time can be arbitrarily set, in addition to the effect of the invention according to claim 6, the user can The time during which the input of the second power switch is valid can be set freely, and the convenience for the user is improved.
[0077]
According to an eighth aspect of the present invention, in the digital camera according to the fourth aspect, when the main body power is turned on by the second power switch, the power control means is a mode switching means other than the recording mode. When the other mode is selected, since the main body power supply is turned off, in addition to the effect of the invention according to the fourth aspect, it is possible to prevent wasteful power consumption.
[0078]
According to the invention of claim 9, in the digital camera of claim 1, the power control means has the second power switch turned on when the first power switch is turned off. In this case, since the display means is not turned on, in addition to the effect of the first aspect of the invention, it is not necessary to supply power to the display means with high power consumption. Can be reduced.
[Brief description of the drawings]
FIG. 1 is a diagram schematically showing an external configuration of a digital camera according to an embodiment viewed from the back.
2 is a schematic view showing the details of the door mechanism of the digital camera of FIG. 1 in a closed state.
3 is a schematic view showing the details of the door mechanism of the digital camera shown in FIG. 1 in an open state. FIG.
4 is a schematic view showing in detail a part of the door mechanism of the digital camera of FIG. 1 in a closed state.
FIG. 5 is a block diagram of a digital camera according to the present embodiment.
FIG. 6 is a diagram showing a setting screen for a second power switch.
FIG. 7 is a flowchart for explaining an operation of turning on the power (photographable state) by a second power switch.
FIG. 8 is a flowchart for explaining an operation of turning off the power by a second power switch.
[Explanation of symbols]
1 Memory card door
2 Release button
3 Rotation mode dial
5 Finder eyepiece window
6 Battery compartment lid
7 Door member
9 Main power button
11 Switch actuator
12, 13, 15 axes
14 Rotating lever
16 Click leaf spring
21 Lower rail
22 Upper rail
100 digital camera
101 Lens system
101a Focus lens system
101b Zoom lens system
102 Mechanical mechanism including autofocus
103 CCD (Charge Coupled Device)
104 CDS (correlated double sampling) circuit
105 Variable Gain Amplifier (AGC Amplifier)
106 A / D converter
107 IPP (Image Pre-Processor)
108 DCT (Discrete Cosine Transform)
109 Coder (Huffman Encoder / Decoder)
110 MCC (Memory Card Controller)
111 RAM (internal memory)
112 PC card interface
121 CPU
122 Display section
123 Operation unit
126 SG Department
127 battery
128 DC-DC converter
129 Main power switch
131 Focus driver
132 Focus pulse motor
133 Zoom driver
134 Zoom pulse motor
135 Motor driver
150 PC card

Claims (9)

In a digital camera that captures a subject image and acquires image data,
Display means including a monitor screen for displaying an image;
First and second power switches for instructing power-on;
Power control means for turning on a main body in response to an instruction from the first power switch or the second power switch;
A door member covering the monitor screen;
An opening and closing mechanism that opens and closes the door member in conjunction with ON / OFF of the first power switch,
The power control means turns on the main body when the first power switch is turned on, while the second power switch is turned on when the first power switch is turned off. The digital camera is characterized in that the main unit power is turned on when the camera is turned on. The digital camera according to claim 1, wherein
A digital camera characterized in that the second power switch is also used as another input switch. The digital camera according to claim 2,
A digital camera characterized in that another input switch functioning as the second power switch can be selected. The digital camera according to claim 1, wherein
A mode selection means for selecting a recording mode for capturing and recording image data and other modes;
The digital camera according to claim 1, wherein the power control means accepts an input of the second power switch only when a recording mode is selected by the mode switching means. The digital camera according to claim 1, wherein
A digital camera characterized in that enable / disable of the second power switch can be selected. The digital camera according to claim 1, wherein
The digital camera according to claim 1, wherein the power control means turns on or off the main power when the second power switch is pressed for a predetermined time. The digital camera according to claim 6, wherein
A digital camera characterized in that the predetermined pressing time can be arbitrarily set. The digital camera according to claim 4, wherein
The power control means turns off the main power when the main power is turned on by the second power switch and the other mode is selected by the mode switching means. Digital camera. The digital camera according to claim 1, wherein
The power control means does not turn on the display means when the second power switch is turned on when the first power switch is turned off. Digital camera.

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