JP2000039659A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera capable of preventing photographing with a size different from an intended print size by preventing a user from erroneously recognizing a photographic picture frame size. SOLUTION: The camera is provided with a setting means capable of setting the photographic picture frame size to a full size and the size except it, a finder provided with a visual field frame line (a high-vision visual field frame line S100-2 and a panoramic visual field frame line S101-2) for showing the photographic picture frame size except the full size in a visual field range and display means S200 and S201 provided in the finder, which become at least display states, when the photographic picture frame size except the full size is set, to identify the fact that the photographic picture frame size except the full size is set.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera capable of switching a photographing screen size on the way.

[0002]

2. Description of the Related Art At present, a panoramic print of a powerful screen has gained popularity due to its wide field of view.

[0003] In general, a user rarely desires to photograph all frames in a panoramic size, and only a few of the frames to be photographed. For these reasons,
A compact camera has been developed that can switch from normal size to panoramic size on the way. Such a camera that can be switched in the middle allows a camera user to select and enjoy two types of powerful screens. less than,
A brief description will be given of a method of displaying a field of view in a conventional camera capable of switching between normal size and panorama size.

In Japanese Utility Model Laid-Open No. 3-84825, a full-size or panorama-size field of view frame is provided in advance in a finder, and a user determines which of them is to be selected based on a display of a photographed image size display means of a camera. And a method of shooting.

[0005]

However, in the method disclosed in Japanese Utility Model Laid-Open Publication No. 3-84825, the number of view frame lines in the viewfinder increases, and it becomes very difficult to see a normal size (full size) view. Therefore, in a conventional visual field display mode, a user of a general camera may mistakenly recognize a currently selected screen size, and may take a photograph of an unintended print size.

The present invention has been made in view of such a problem, and an object of the present invention is to make it easy to understand the display of a shooting screen size other than a full size (for example, a panorama size or a high definition size). An object of the present invention is to provide a camera that prevents a user from erroneously recognizing a photographing screen size, thereby preventing photographing at a size different from an intended print size.

[0007]

In order to achieve the above object, a camera according to a first aspect of the present invention comprises: a setting means capable of setting a photographing screen size to a full size or another size; In order to identify that a viewfinder frame line indicating a shooting screen size other than the full size is provided, and that a shooting screen size other than the full size is set, a shooting screen size other than the full size is set. And a display element provided in the finder that is at least in a display state when is set.

A camera according to a second aspect of the present invention is a camera in which a photographing screen size can be set to a full size or any other size. The line index that displays the corresponding range with a scribe line, and the above line index,
And a display element that is brought into a display state when a photographing screen size other than the full size is set.

[0009]

FIG. 1A is a perspective view of a camera according to an embodiment of the present invention.

In FIG. 1A, reference numeral 2 denotes a camera body;
Is a shutter release button, 6 is a slide switch for selecting a shooting angle and a screen size, and the LCD ₁ is a liquid crystal display device for displaying various information related to shooting. Also,
Reference numeral 9 denotes a flash switch and a subject switch, respectively, and various modes of the strobe light, that is, AUTO, AUTO-S, OFF, and FILLIN, according to the number of times of pressing.
Settings and self, spot ranging / photometry, macro, ∞ mode, and normal settings.

A slide switch 6 for selecting a photographing angle of view and a screen size changes the photographing screen size and the display in the viewfinder according to the slide position 6a, 6b, 6c when the slide switch 6 is slid in the X direction in the figure. It is configured. That is, when set at the position of 6a, it is set and displayed as a normal full-size shooting range, and when set at the position of 6b, it is set as a high-vision size shooting range with an aspect ratio of 9:16, It is displayed, and when it is set at the position 6c, it is set and displayed in a panoramic size shooting range.

Further, in FIG. 1A, reference numeral 12 denotes a flash light emitting unit, 16 denotes a finder window, 18a and 18b denote light emitting and receiving windows for distance measurement, 20 denotes a photographing lens, and 22 denotes a light measuring window for automatic exposure control. , 23 indicate hold detection windows for detecting whether or not the photographer has held the camera grip unit.

FIG. 1B is a rear view of the camera, in which light-projecting / light-receiving units 30a and 30b for detecting whether or not the photographer is looking into the finder are arranged below the finder 14. I have.

FIGS. 2A and 2B show a finder optical system,
It is sectional drawing which shows a ranging optical system, an eye sensor optical system, and a hold sensor optical system further.

2A and 2B, the finder optical system includes an objective lens 101 and a pair of poro mirrors 1.
02, 103, 104, and 105, a liquid crystal display device LCD ₂ as a finder visual field limiting means disposed near the image forming position of the objective lens, a condenser lens 107 and an eyepiece 106 disposed close to the liquid crystal display device LCD ₂ .

In the distance measuring optical system, a distance measuring window 18a is provided.
Behind the (FIG. 1 (a)) are arranged ranging emitting diodes 24 are configured to project infrared light on the object via the projection lens L _3. The light reflected from the object through the light receiving lens L ₄ arranged behind the ranging window 18b, and is received in the ranging light-receiving element 26, the distance to the object is measured by triangulation principle.

Further, an infrared light emitting element 31a and a light receiving element 31b are arranged below the eyepiece lens 106, and infrared light projected from the infrared light emitting element is emitted to the face of the photographer and is transmitted to the light receiving element 31b. If detected, an eye sensor optical system for determining that the photographer is looking into the finder, and not detecting that the photographer is not looking into the finder.

Further, in the hold sensor optical system, the hold detection window 23 includes a prism 23a sandwiching a half mirror, a light projecting element 23b, and a light receiving element 23.
c, by detecting the infrared light from 23b reflected by the hand of the photographer by the light receiving element 23c when the photographer holds the grip of the camera,
Detects when the camera is held.

Next, a description will be given of an electric circuit of the camera according to the present embodiment, which is configured by connecting the circuit of FIG. 3 and the circuit of FIG.

In the figure, S ₁ is a photometric switch which is closed by pressing the shutter release button 4 shown in FIG. S ₂ is a release switch which is closed by the pressing of the up to the second stage. S ₃ is a slide switch which is closed in conjunction with the photographic screen size selection slide switch illustrated in FIG. S ₄ is closed in response to a shutter release, a film winding switch is opened by the completion of winding up the film. S ₅ is open and close the back cover of the camera, a back cover switch is closed and opened. S ₆ is opened when the film is wound are loaded, a film sensing switch the film is closed when not loaded. S ₇
A count switch is closed at the beginning of the shutter release operation and opened when the shutter charge is completed. S ₈ is the subject switch, consists of once pressed and the normal mode to the self remote control mode, transition and spot the distance measurement and photometry → macro mode → ∞ mode for each pressed, then pressed is back to normal mode . S ₉ is a flash switch consists pressed once the AUTO mode to the red-eye reduction mode, transitions between off mode → forced flash mode for each pressed,
When the button is pressed next time, the mode returns to the AUTO mode.

E ₁ and E ₂ are power supply batteries for the camera, and when either of them is mounted in the battery compartment, power is supplied to the camera. E ₁ is a high output impedance of the battery such as a lithium battery, E ₂ are those low output impedance of the battery as a nickel-cadmium battery. The battery compartments have a structure (not shown) that fits into each other according to the size of the two types of batteries so that others cannot enter each other.
R _D (0.3
Ω) is connected. This is T for strobe charge
As r ₁ is not thermally destroyed during the flash charge, it is intended to limit the inrush current on the primary side of the step-up transformer putting limiting resistor.

When _{one of} the batteries E ₁ and E ₂ is loaded, the output is a diode D ₂ and a capacitor C _2.
The signal is input to the CPU 200 via the stabilizing circuit composed of _two . Here, a circuit that is likely to malfunction due to a voltage change includes a power supply battery E stabilized by a stabilization circuit.
Feed ₁ is made, powered directly from the power supply battery E ₂ is made in the other circuits.

The switches S ₁ , S ₂ and S ₄ are start switches, respectively, and are connected to the CPU 20 through a NAND gate NA.
In addition to being connected to the 0 interrupt terminal INT, it is also directly connected to its input terminals PI ₁ , PI ₂ and PI ₇ . Here, the interruption to the CPU 200 is performed when the input to the interruption terminal INT rises.

The switches S ₃ and S ₅ are input to a NAND gate NA via a differentiating circuit 202 including a capacitor and a resistor. Switch S ₅ to S ₉ are connected to the input terminal PI ₇ ~PI ₁₂ of CPU 200.

FL is a flash discharge tube for flash photography and
And a circuit including the control circuit, and the output of the CPU 200.
Terminal PO₀From the signal from Tr₁ON, OFF
And apply high voltage to the main capacitor for flash emission
And the interface I
C (hereinafter referred to as MINIC) 204 to communicate with N ₀
Turn on the terminal output to fire the flash
You.

Communication between CPU 200 and MINIC 204
Shin is the PO of CPU200.₀~ PO _FiveAnd MINICIC
204 D₀~ D_Three4-bit data line connected to
And PO₆, PO_ThreeAnd ALATCH, DLATCH
Connected address latch control line and data latch
CPU 200 is connected to MINIC 20
Transfers 4-bit data to the latch memory built in 4
By doing MINIC 204 has been transferred
Operate the internal functions based on the data, and
The state of each terminal of C204 is determined.

As shown in FIG. 9, first, 4-bit address data is output to terminals D _{0 to} D ₄ , then ALATCH changes from H to L, and the address of MINIC 204 is changed by H to L edge. Latched by latch.

Next, after 4-bit transfer data is output, DLATCH changes from H to L, and is latched in the latch memory selected by the address latch of the MINIC 204 by the H to L edge.

FIG. 5 shows a conceptual diagram of the configuration of the latch memory. With such a configuration, the CPU 200
Many terminal controls can be performed with a small number of ports.

The charging control by the CPU 200 will be described below with reference to the flowcharts of FIGS.

[0031] In S ₁ in FIG. 12 (a), CPU20
0 is the Tr ₁ ON time T _ON and the OFF time T _OFF
Is set (see FIG. 12B). Here, T _ON = 5
00 μsec, T _OFF = 500 μsec. This is an initial value, and is stored in the ROM or E ² P
The determination is made with reference to the value written in the ROM 206. Next, in S _2, performs pulse driving set in S ₁ to ON · OFF control PO ₀ pin. By monitoring the voltage dividing ratio of the R _2, R ₃ through ST terminal of MINKIC204 Then in S _3, the flash charging voltage 50
Check whether it is V or more. As shown in FIG.
In the NKIC 204, the comparator 300 and the D / A3
02 is built, the value and ST terminal input value of the D / A comparison by the comparator 300, the comparison result is input to the input port PI ₁₃ of CPU200 through CPO terminal. And, if 50V or more jumps to S _5, jumping if not higher than 50V to S _4.

S_FourIn PO₀5 seconds or less after driving the terminal
Judge whether the battery has been charged and if it has passed, use the flash
When it is determined that the charging circuit FL is out of order,₁₇Skip charging
finish. In this way, the occurrence of heat and ignition failures is prevented.
Go. Next, S_FiveAt T _ON= 300 μsec, T
_OFF= 400 μsec. In this way
Driving at a duty and frequency that matches the bocharge voltage
Strobe charge speed and efficiency
In CPU, it is possible to make the CPU 200 perform the optimal boosting operation.
it can. The set value may be fixed to ROM or a step-up transformer.
And E to match the type of Tr^TwoPROM value and
You may. Also, depending on the type of battery and consumption
Software configuration so that the above parameters can be changed
Is also preferred.

[0033] Next, ON the PO ₀ terminal in S _6, O
Pulse drive is performed by FF control. Next, in S _7, it is determined whether the strobe charging voltage is above 100 V, otherwise judges whether the elapsed at least 30 seconds, if passed jumps to S _17.

Further, when the flash charge voltage is not less than 100 V, in S _9, the T _ON and 200 .mu.sec, T
_OFF is set to 400 μsec. Then, in S _10, P
ON the O ₀ terminal and OFF control. Then, in S _11, to determine whether the strobe charging voltage is above 200V, otherwise judges whether the elapsed at least 30 seconds, if passed jumps to S _17.

[0035] In the case of more than 200V in S _13, T _ON
Is set to 100 μsec, and T _{OFF is set} to 200 μsec. Next, in S _14, ON the PO ₀ terminal and OFF control. Then, in S _15, a strobe charge voltage 3
To determine whether more than 00V, otherwise it is determined whether or not older than 30 seconds, if you passed jumps to S _17. For more 300 V, in S _17, to stop the charging operation by the PO ₀ terminal L, and returns (S
₁₈ ).

Here, the T _ON and T _OFF times are fixed values, but a temperature and a battery type discriminating means are provided and the battery type (for example, when the output impedance is small like a NiCd battery, T _ON is shortened and T _OFF is lengthened. If the duty is changed according to (1), the charge time can be shortened as much as possible without heat destruction.

Returning to FIG. 3 and FIG.
Motor M₁And focus adjustment lens drive mode
Data M_TwoAnd shutter opening and closing plunger, screen size
Setting motor M_ThreeIs a motor bridge IC that drives
N by communication between CPU 200 and MINIC 204
₁, N_Two, N_Three, N_Four, N_Five, P₁, P_Two, P_Three,
P _Four, P_FiveBy controlling each output port of the
Lum hoisting / rewinding, focus adjustment, shutter opening
Close and screen size setting are performed.

SDX ₁ , SDX ₂ , SDX ₃ , SDX ₄
Is a film sensitivity reading switch for reading information about the film sensitivity stored in the film cartridge in advance and setting the open / close state according to the information. The 4-bit digital code information by each switch is MIN.
It is input to the DX ₁ , DX ₂ , DX ₃ , and DX ₄ terminals of the KIC 204. Then, in response to the chip enable of the MINIC 204, DX ₀ , DX for only several hundred μsec.
₁ , DX ₂ and DX ₃ are output.

The CPU 200 determines that PO ₂ , P
The bit code is read by using O ₃ , PO ₄ , and PO ₅ as input ports to obtain film sensitivity information. During this period, the contents of the internal latch memory in the MINIC 204 are all set to predetermined values.

Further, D ₁ is a photodiode,
The cathode is connected to the reference voltage _Vref terminal from the MINICIC 204, and the anode is connected to the SPD terminal. Photodiode D ₁ output is logarithmically compressed by an internal light measurement circuit, an output which is logarithmically compressed compared to the output of the temperature-proportional DAC302 by the comparator 300, the result CPO
Is output to While monitoring the CPO output state, the CPU 200 changes the set value of the temperature proportional DAC 302 by communication and performs a so-called successive approximation type A / D operation to acquire the digital value of the photometric value. Since the CPO is a wired OR of various comparator outputs, it goes without saying that the CPU 200 has previously selected which comparator to use by communication. As a result of this wired arrangement, the number of pins of the MINIC 204 and the number of ports used by the CPU 200 can be greatly reduced. The CPU
Reference numeral 200 performs exposure calculation based on film sensitivity information, photometry information, and distance measurement information described later, and performs shutter control.

Further, PI₀, PI₁, PI_TwoEach
Photo interrupter and pin
Photo interrupters for detecting the amount of lens drive
3 is a photo interrupter for detecting an exposure timing. So
The collector of each phototransistor is
Wired OR format combined into one for line reduction
Then, if it is in the PIIN terminal of
You. These signals are compared within the MINIC 204.
Data and compare with the threshold level corresponding to each PI
Then, after waveform shaping, it is output from the CPO terminal. Each PI
The choice is PL₀, PL₁, PI_TwoTerminal ON / OFF
Has gone by. PL₀, PL₁, PI_TwoThe terminal is
Each is a constant current source port, and the IRED of each PI is
Can be flow driven. CPU2 as described above
00 is PL by communication₀, PL ₁, PL_Two, PL_Three
Each sequence is controlled by turning on and off the terminal sequentially.
Know the required drive amount and timing
Can be.

[0042] AF is a portion for measuring the distance to the object, PSD is V _ref terminal is connected to PSD1, PSD2 terminal, IRD 1 terminal is connected to Tr ₃ for driving the IRED.

When the CPU 200 instructs the MINIC 204 to communicate the number of distance measurements by communication, the
Emits a pulse, and the ratio calculation result of the PSD photocurrent outputs PSD1 and PSD2 obtained in synchronization with the pulse emission is stored in an integration capacitor (not shown). The stored capacitor charge is C
It is discharged by communication from the PU 200, and when it is discharged, the CPO terminal changes from H to L. CPU 200 counts the time from the start of communication for discharge to the time when CPO changes from H to L, and uses the time as distance measurement data.

The block diagram of the distance measuring circuit shown in FIG. 7 and FIG.
Referring to the flowchart of FIG.
The operation control will be described.

In steps S ₁ , S ₂ , S ₃ , S ₄ , and S ₅ , the number of times of light projection / integration N of distance measurement is performed according to each screen size.
To determine. In general, the greater the number of times of light projection / integration, the better the distance measurement accuracy. There is a relationship between the distance measurement accuracy and the number of times of light projection / integration, that is, distance measurement accuracy∝1 / (N) ^1/2 . In panoramic high-definition, the maximum permissible circle of confusion is smaller because the magnification of the negative is larger than in full-size shooting. It needs to be improved. The number of times of light emission / integration during full-size shooting is N _F
Then, the number of times of light emission / integration N ₂ required for the second screen size is N ₂ = N _F × (negative enlargement rate of second screen size print / negative enlargement rate of full size print) ² It is desirable to use as a guide. However, as the number of light emission / integration increases, the release time lag increases, so an appropriate balance is required. If the number is too large, the integration capacitor may saturate due to hardware constraints.In such a case, the same ranging sequence should be performed multiple times and the average of the results should be taken. good. Here, for simplicity of explanation, it is assumed that the integration capacitor is sufficiently large and there is no restriction on hardware.

Next, in S _6, CPU200 is MI
Communicating with NKIC204, turning ON the RSW ₁ make a bit LM1 latch memory 400. Then, the output drive capability of the OP amplifiers OP1 and OP2 forming the feedback circuit increases, and the drive capability is such that the hold capacitors C _H1 and C _H2 can be rapidly discharged. Thus, the amount corresponding to the background photocurrent from the PSD can be instantaneously stored in the capacitors C _H1 and C _H2 , and the background photo current component can be extracted. After a predetermined time, LM1 is turned off by CPU communication to change from the quick charge state to the normal charge state. This reduces the drive capacity of OP1 and OP2,
It is in a state of not responding to the D photocurrent input.

Next, in S _7, L by the CPU communication
M3 is turned ON to reset the integration C (integration capacitor). After a predetermined time, LM3 is turned off. Next, S
_{At 8,} it is assumed that the light emission / integration counter Nc = 0. next,
In S _9, first, ON the LM4 communicate CPU,
To be able to drive directly IRED by D ₀ terminal.

Next, S_TenIn CPU 200, D₀
ON / OFF control of terminal and pulse drive of IRED
You. In sync with it, SW_FourON / OFF, and
Synchronously, the distance calculation output is integrated into the integration capacitor.
You. Then S₁₁In one IRED pulse drive,
The light projection / integration counter NC is incremented. next,
S ₁₂, The light emission / integration counter NC reaches a predetermined number N.
Until it reaches S_Ten, S₁₁, S₁₂Around the loop of
Do. S₁₂At N_cReaches N, S₁₃smell
LM4 is turned off by CPU communication to disable light emission
You.

Next, LM by CPU communication in S _14
5 is turned ON, and the discharge of the integral C is started. Then, in S _15, CPU 200 starts counting with discharge start, CPO continues counting until inverted to H → L (S _16), counted ends when CPO is inverted. Next, in S _17, to calculate the distance measurement data AF does not depend on the light projection count by multiplying the (100 / N) to the count value, the process returns (S _17). FIG. 10 shows a timing chart for the above processing.

Here, the description returns to FIGS. Only one pair of IRED and PSD is shown in the AF of FIG. 4, and the connection with the MINIC 204 is one. In this embodiment, a total of five sets of IRED and PSD are provided.
There are five ranging points in all. Each of them corresponds to a mark in the finder as shown in FIG. The five distance measurement points can be selected by the CPU 200 performing communication.

EYES in FIG. 4 is a pair of the IRED and the phototransistor for detecting whether or not the photographer is looking through the viewfinder of the camera. The infrared light projected from the IRED is reflected on the face of the photographer. Then, when the reflected light is detected by the phototransistor, it is determined that the user is looking. In the IRED, the CPU 200 communicates with the MINIC 204 to drive ON / OFF pulses.
Output to PO.

The HLDS of FIG. 4 also determines whether or not the camera is held by the presence or absence of reflected light from the photographer's hand by the same operation as described above. CPU as above
The user 200 can know whether the photographer holds the camera and looks into the viewfinder. Next, the operation of the CPU 200 for controlling the camera of the present embodiment will be described with reference to FIG.
A description will be given based on the flowchart of FIG.

In FIG. 16, the circuit is reset by a power-on reset due to the installation of a battery,
Next, input-output ports and memory of the CPU200 in S ₀ is all initialized. Then 4 minutes and after 4 hours the interrupt is applied as in S _1, 4 minutes and 4 hours interrupt allow respectively, and starts the interrupt timer respectively. Then, in S _2, the screen mode PI ₃ ~PI
Judgment is made from each port status of ₆ , and the corresponding display data memory is rewritten. Next, to set the screen size drives the motor M ₃ in S _3. Next, the display according to the display data memory in S ₄ with respect to LCD ₁ and LCD _2. Then, start the boosting operation of the flash circuit in S _5, and stops at a predetermined voltage value.

Next, to allow interrupts from the outside of the S ₆ to CPU200 of interrupt terminal (INT).
Next, when it is detected that the photographer is looking into the finder in S _7, turning ON the flag EYESF. Turns off if not detected. Next, when it is detected that the photographer in S ₈ is holding the camera flag HLD
The SF is turned ON, and is turned OFF if the SF is not held.

[0055] Then, in S _9, EYESF, HL
If it is determined that both DSFs are ON, S
₁₁ performs distance measurement and photometry by S _12, stores each value in the memory. Then select the shortest distance ranging point in S _13, and writes the display data memory. Then, return in the S ₁₀ T seconds waiting, to S _7. Here, the initialization value is T = 0.5.

Next, each interrupt will be described. FIG.
(A) is a flowchart in a case where an interruption is input for 4 minutes. First, all the LCD _1, LCD ₂ displays in S ₁ OFF. Then I sense in S _2,
The period T of the hold sense is set to 1 and 1 second. Then, the return in the S _3.

FIG. 17 (b) is a flowchart in the case where a 4-hour interrupt occurs. First, the initialization of memory port in S _1. Then it enters stop mode at S _2, to a low current consumption state.

FIG. 18 is a flow chart when an external interrupt occurs. First, press the shutter button 4
Slide the trimming button 3, wind the film,
And an external interrupt is applied to the interrupt terminal by the CPU200 either closing the back lid, the process proceeds to S ₂ prohibits other external interrupts in S _1. Then, check the opening and closing state of the switch S ₄ hoist in S _2, the switch S ₄ is OFF, the input and willing information DX code S ₃ if completed film winding. If it is not completed performing a jump winding operation to wind-up routine of S _17.

Next, in S _4, enter the setting screen size from the screen size setting switch position, and writes the status to the display memory. Next, in S _5, the motor M ₃
To set the screen size. Next, in S _6, detects the closed state of the rear lid switch S _5, when backing pigs switch S ₅ back pig is being opened is ON, S
Proceeding to ₇ , the value of the film counter for counting the number of photographed films is set to "0".

[0060] Next, if the back cover switch S ₅ have been closed is back pig in the S ₆ is OFF, the process proceeds to S ₈ to jump S _7. Next, in S _8, the shutter button 4
Open and closed states of the photometric switch S ₁ which are linked is detected, the photometric switch S ₁ is returning to A ₁ in FIG. 16 if OFF to. If the ON fly to S _9.

[0061] In S _9, Ai sense flag EYE
SF, and ON are both hold flag HLDSF, performs a 5-point distance measurement and photometry at S ₁₀ if the photographer is not already state that peeps holding the camera, if not the case, S ₁₁
Hetobu. In S ₁₁ to stop the distance measurement and photometry. Next, S
_{At 12} , the distance measuring point information is written to the display memory indicating the distance measuring points. Next, LCD _1, LC in S ₁₃
To display in the D _2. Then, to detect the opening and closing of the release switch S ₂ in S _14, S ₂ enters the exposure operation jumps to release routine of S ₁₆ if turns ON. If the OFF detecting the state of the angle photometric switch S ₄ at S _15, S ₄
But if the ON returns to S _14, jumps to A ₁ if the OFF.

FIG. 8 shows an embodiment of the photographing screen switching mechanism. Reference numerals 20 and 20 'denote two photographing size switching members disposed in front of the aperture 10 so as to be vertically movable in a vertical plane. The photographing size switching members 20 and 20' protrude from the camera body. Guide pin 1
Vertical guide slots 26, 26 'are formed for engagement with 7, 17'. Racks 27, 27 'meshing with the connecting gear 36 are provided at one ends of the photographing size switching members 20, 20'.
Is formed. Reference numeral 30 denotes a slope cam for moving the switching member 20 in the vertical direction.
It is held in a state pressed against the slope cam 30 by the spring 50 attached to the projection 51 and the camera body projection 51 ′.

[0063] The slope cam 30 is rotated by a motor M _3, the switching member 20, 20 'in accordance with the rotation amount
Will go up and down. The vertical movement position can be detected by the photoreflector 31 and the white, black, and gray patterns 32 affixed to the switching member 20. The gray level is a panorama size, the black level is a high definition size, and the white level is a normal size.

Here, the description returns to FIG. LCD ₁ is a liquid crystal display device on the top of the camera, and LCD ₂ is a liquid crystal display device in the viewfinder. The liquid crystal display voltage VLCD is MIN of FIG.
Supplied from KIC204. VLCD voltage is CPU2
The value can be made variable by communication from 00 to the MINIC 204, and is set to a value such that the contrast of the liquid crystal in the finder becomes as high as possible.

As the liquid crystal in the finder, the same TN (twisted nematic) liquid crystal as the liquid crystal generally used on the upper surface of the camera can be used.
50% of polarizing plates are used.
Since the above light is blocked, the image in the finder becomes dark. Therefore, in order to increase the transmittance, it is preferable to use a guest-host liquid crystal. This uses a liquid material with a nematic liquid crystal having positive dielectric anisotropy (the orientation factor becomes perpendicular to the electrode surface by applying voltage) as a host and a dichroic dye having light absorption anisotropy as a guest. A liquid crystal that transmits light when the alignment factor is oriented perpendicular to the electrode surface (homeotropic alignment) and has the property of blocking light when the alignment factor is aligned parallel to the electrode surface (homogeneous alignment). is there. As a general liquid crystal driving method, dynamic driving is usually used, and the liquid crystal in the finder is preferably statically driven in order to increase contrast.

[0066] Figure 11 is a COM1 terminal and S ₁ to S ₁₃ pin waveforms terminal in the case of static drive the LCD _2. Each of the S _{1 to} S ₁₃ terminals corresponds to a segment of each liquid crystal pattern, and the S _{1 to} S ₁₃ terminal waveforms and the COM
1 When the waveforms are out of phase, V _DD to -V _DD voltages are applied to each segment and they are turned on. Conversely, it turns off if the phase is the same as the COM1 waveform.

The display memory bit areas S _{1 to} S ₁₃ are secured in the CPU 200 (not shown). When each bit is “1”, it indicates that the corresponding display segment is ON and “0”. "" Indicates OFF. CPU200 refers to the memory bit display by subroutine for display (not shown), it switches the output state until PO ₈ ~PO _21. The switching cycle is about every 5 msec, and the display subroutine is called in the middle of each control program to perform stable display in the finder. Hereinafter, each embodiment of the present invention will be described.

FIGS. 19 to 22 show a first embodiment.
The liquid crystal display device (LCD ₂ ) is used as the viewfinder visual field limiting means, and the panorama and the high-definition visual field light blocking mode are different so that the user can recognize which screen size is currently selected.

FIG. 19 shows that the screen size can be identified by performing light-shielded display with two light-shielded blocks for the high-vision size and four light-shielded blocks for the panorama size.

FIG. 20 shows that the screen size can be identified by performing the light-shielded display with two light-shielded blocks for the high-vision size and eight light-shielded blocks for the panorama size.

FIG. 21 shows that the screen size can be identified by performing the light-shielded display with the uniform light-shielding pattern for the high-definition size and the light-shielding pattern and the checkered light-shielding pattern for the panorama size.

FIG. 22 shows that the screen size can be identified by performing a light-shielded display with the uniform light-shielding pattern for the high-vision size and the light-shielding pattern and the lattice-shaped light-shielding pattern for the panorama size.

FIGS. 23 and 24 show a second embodiment.
In the case where the same pattern is used for the finder view light-shielding, panorama and high-vision can be distinguished by further displaying a character notation.

FIG. 23 shows a six-segment liquid crystal character notation means as a character notation in addition to a light-shielding LCD. Since the character notation is performed on the LCD, the power consumption is designed to be as low as possible by displaying it on the LED. Since this type of display must be illuminated at all times, current consumption is a problem with LEDs. In addition, six output terminals for turning on the LEDs are required, and there are many wiring problems. Therefore, in this embodiment, the common marks as shown in FIG. 31 (b) and high-definition light-shielding segment S _12, constitute a common panoramic light shielding segment S ₁₃ marks shown in FIG. 31 (c) .

By doing so, FIGS.
In contrast, the segment S _{14 of the} mark shown in FIG.
, The number of display pins can be reduced as much as possible, and the problem of an increase in the number of terminals, which is a problem of static driving, can be solved.

FIG. 24 shows an example in which characters capable of identifying the photographing screen size are displayed. With such a display mode, the object of the present invention can be achieved without newly increasing the number of character segment drive terminals.

FIG. 25 shows an embodiment in which panoramic and high-vision displays are performed using light emitting elements. Here, LED1 and LED2 shown in FIG. 3 and a character display mask (not shown) are used as light emitting elements. When the high-definition screen is set, LED1 is turned on, and when the panorama screen is set, LED2 is turned on to indicate to the photographer what the current photographing screen is. Display is CPU2
00 communicates with MINICIC 204 and MINICIC2
This is performed by turning on and off the ports of LED1 and LED2.

Here, as the LED display timing, there can be considered a method of performing light emission display in conjunction with the 1st SW (photometry SW), similarly to the lighting of the distance measurement completion display LED in the conventional camera. However, unlike the completion of the distance measurement, this display is a mode display. Therefore, if the light is turned on only while the release button is half-pressed, the display must be half-pressed every time a check is performed. In the first place, since the half-press operation is a kind of operation that is difficult for the user, it is not preferable to adopt the above configuration.

Therefore, in the present embodiment, the photometric switch, the release switch, the subject switch, the strobe switch, the back cover S
When the external SW of W or the like is input the LED display is started, to the way to Sho燈the LED display Being without being given time operation, LC in step S ₃ in FIG. 16
In addition to D ₁ and LCD ₂ , LED display is performed according to the contents of the display memory, and at S ₁ of FIG.
The LED is turned off together with turning off the CD ₁ and LCD ₂ displays.

With such a configuration, the screen size display by the light emitting element can be as long as possible while using the camera.
In addition, a convenient screen size display can be performed without using unnecessary current consumption.

[0081] In addition to the above arrangement, since the electric system of the present embodiment has a built-in eye sensor and hold the sensor, by utilizing this to about one second minute to 4 time of the LED lighted in S ₃ in FIG. 16 And E
If a judgment routine for turning on the light only when YESF = ON and HLDSF = ON is included, the LED light will be displayed only when the camera user is looking into the viewfinder. Can be.

As described above, in the embodiment, the LCD is used as the visual field limiting means. However, the LCD is used to reduce the size of the camera, and is not limited to this. The same effect and purpose can be achieved.

FIG. 26 is a view for explaining the third embodiment of the present invention. In this embodiment, when the user sets the high-definition size or panorama size as a shooting screen other than the full size, a plurality of view frame lines S100-1 for high-definition display or a plurality of view frame lines S101 for panorama display are provided in the viewfinder. -1 is displayed, and the display element S200
Is characterized in that the display element S201 is controlled to a display state at the time of the high-vision size.

FIG. 27 shows a modification of FIG. 26. When the user sets the high-definition size or panorama size, a single view frame line S100-2 for high-definition display or a single view line for panorama display is displayed in the finder. The display frame S101-2 is displayed, and the display element S200 is controlled to a display state at the time of the panoramic size, and the display element S201 is controlled to the display state at the time of the high-vision size.

FIGS. 28, 29, and 30 show an embodiment in which a panoramic visual field sign can be viewed while restricting the HDTV visual field. With such a configuration, it is possible to prevent erroneous recognition of the HDTV and the panoramic size. . Here, the high vision field indicator is displayed even during the panoramic field limitation, but this may not be provided.

[0086] Also, the view mark (view frame line) for panorama or high vision may be displayed as a scribe line (line index) in the viewfinder. The visual field indicator may be a solid line, but it is better to emphasize the meaning of the indicator as a dotted line or a partial line segment without covering the entire screen as in this embodiment, It is better to be able to distinguish between.

As described above, in the present embodiment, in the camera which can be switched to the panorama size and the high-vision size on the way, and has a means for switching the field frame, the panorama and the high-definition viewfinder light-blocking states are different. Alternatively, by performing panorama, high-vision character display, or visual field sign display together with panorama and high-definition visual field shading or visual field frame display in the viewfinder, the panorama, high-definition Even if the screen size is very similar, it is possible to reliably distinguish between panorama and high definition,
It is possible to prevent photographing at a print size contrary to the photographing intention of the user.

[0088]

As described above in detail, in the present invention, the display of the photographing screen size other than the full size is made easy to understand, so that the user does not mistakenly recognize the photographing screen size. It is possible to prevent photographing at a size different from the size.

[Brief description of the drawings]

FIG. 1 is a perspective view and a rear view of a camera according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view and a configuration diagram of a finder optical system.

FIG. 3 is a part of an electric circuit of the camera.

FIG. 4 is a part of an electric circuit of the camera.

FIG. 5 is a block diagram of an electric circuit in the MINIC.

FIG. 6 is a block diagram of an electric circuit in the MINIC.

FIG. 7 is a block diagram of an electric circuit in the MINIC.

FIG. 8 is a diagram showing a shooting screen switching mechanism of the camera.

FIG. 9 is a timing chart showing a communication format between the CPU and the MINKIC.

FIG. 10 is a timing chart showing a distance measurement circuit block control format by a CPU.

FIG. 11 is a drive waveform diagram of the LCD in the finder.

FIG. 12 is a part of a flowchart showing a flash charging routine.

FIG. 13 is a part of a flowchart showing a flash charging routine.

FIG. 14 is a part of a flowchart showing a distance measurement routine.

FIG. 15 is a part of a flowchart showing a distance measurement routine.

FIG. 16 is a flowchart showing a power-on reset routine.

FIG. 17 is a flowchart showing a 4-minute and 4-hour interrupt timer routine.

FIG. 18 is a flowchart showing an external interrupt timer routine.

FIG. 19 is a diagram illustrating a first embodiment in which a high-definition panorama and a panorama light-shielding pattern are identified as different.

FIG. 20 is a diagram showing a modification of the embodiment in FIG. 19;

FIG. 21 is a diagram showing a modification of the embodiment in FIG. 19;

FIG. 22 is a diagram showing a modification of the embodiment in FIG. 19;

FIG. 23 is a diagram illustrating a second embodiment in which the screen sizes of the high definition television and the panorama are displayed according to the restriction of the visual field.

FIG. 24 is a diagram showing a modification of the embodiment in FIG. 23;

FIG. 25 is a diagram showing a modification of the embodiment in FIG. 23;

FIG. 26 is a diagram illustrating a third embodiment in which high-definition and panoramic screen signs are described.

FIG. 27 is a modification of the embodiment of FIG. 26;

FIG. 28 is a modification of the embodiment of FIG. 26;

FIG. 29 is a modification of the embodiment of FIG. 26;

FIG. 30 is a modification of the embodiment of FIG. 26;

FIG. 31 is a diagram showing components of display in the viewfinder.

[Explanation of symbols]

2: Camera body, 4: Shutter release button, 6: Slide switch for selecting shooting angle of view / screen size, 8: Flash switch, 9: Subject switch, 12: Flash light-emitting part, 16: Viewfinder window, 18a, 18b: Light emission / reception window, 20 ... imaging lens, 22 ... light measuring window of the automatic exposure control, 23 ... hold sensing window, LCD _1, LCD ₂ ... liquid crystal display device. S100-1: a plurality of view frame lines for high-vision display; S100-2: a single view frame line for high-vision display; S101-1: a plurality of view frame lines for panorama display; S101-2: for panorama display Single field border. S200: Display element for panorama, S201: Display element for high vision.

Claims (2)

[Claims] 1. A setting means capable of setting a photographing screen size between a full size and another size, a finder having a visual field frame line representing a photographing screen size other than the full size in a visual field range, A display element provided in the viewfinder that is at least in a display state when a shooting screen size other than the full size is set, in order to identify that a shooting screen size other than the full size is set, A camera comprising: 2. A camera in which a photographing screen size can be set to a full size or any other size. A range corresponding to the photographing screen size other than the full size is indicated by a scribe line in a viewfinder of the camera. And a display element corresponding to the line index and being displayed when a shooting screen size other than the full size is set.