JPH06222441A - Camera provided with display function - Google Patents

Abstract

PURPOSE:To enable a photographer to confirm the consumed state of a power source at any time and to prevent the photographer from forgetting exchanging a battery by displaying the consumed state of the power source whether a camera is in a non-photographing state or a photographing preparing state. CONSTITUTION:At the time of confirming that a main switch MSW9 is turned on, main switch processing is called. The main switch processing is performed by checking a power source voltage level by a power source voltage detection circuit 17, and lighting counter display on a liquid crystal display part 2 in the case the voltage level is equal to or above a 1st voltage set previously. In the case where it is less than the 1st voltage, the display is flickered on the liquid crystal display part 2 to inform the photographer that the remaining quantity of the battery is small. In the case of the sub routine of photographing processing, the power source voltage level is checked by the circuit 17 in the same manner. Since the consumed state of the power source on whether the camera is in the non-photographing state or the photographing preparing state, as displayed, the photographer can confirm the consumed state of the power source at any time, the exchange time of the power source is not mistaken, and the photographing unfeasible state is avoided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera having a display function for displaying the status of a power source.

[0002]

2. Description of the Related Art Conventionally, there have been cameras that display a consumed state of a battery, which is a power source. The consumption status was displayed only when the power switch was turned on. Therefore,
It was only when the power switch was on that the photographer could see it.

[0003]

In the above-described conventional camera, even if the photographer intends to replace the power battery by confirming the consumption of the power battery during photography, the photographing is completed and the power switch is turned off. If you do, you may forget that the power battery is not displayed as being exhausted.
Then, the photographer may not be able to confirm until the next shooting, and the shooting may be disabled during shooting.

[0004]

According to the present invention, a switching means for switching a non-photographing state and a photographing preparation state, a detecting means for detecting a power consumption state of a power source, and a display for displaying based on an output of the detecting means. In the camera with display function including means, the display means performs the display regardless of the non-shooting state and the shooting preparation state.

[0005]

In the present invention, the power consumption state is displayed regardless of the non-shooting state and the shooting preparation state.
The photographer can check the power consumption of the power supply at any time.

[0006]

1 is a block diagram showing the configuration of an embodiment of a camera with a display function of the present invention. In FIG. 1, a microcomputer 1 for controlling the operation of the entire camera includes a main switch (MSW) 9, a strobe switch (SBS) 10, a mode switch (MOS) as switches.
11, half-push switch (half-push SW) 12, release switch (release SW) 13, lens barrel position detection switch (lens barrel position detection SW) 14, battery cover switch (battery cover S)
W) 16 is connected.

The main switch (MSW) 9 is operated when starting the camera operation, the strobe switch (SBS) 10 is for selecting a strobe photographing mode, and the mode switch (MOS) 11 is for selecting a self-timer photographing mode. To be done. Half-push switch (half-push S
W) 12 is turned on by half-pressing the release button, and release switch (release SW) 13 is turned on by fully pressing the release button.

Lens barrel position detection switch (lens barrel position detection S
W) 14 detects the position of the lens barrel, and the battery lid switch (battery lid SW) 16 is turned on / off in conjunction with the opening / closing of the battery lid. All of the switches 9 to 15 are momentary switches except the lens barrel position detection switch 14, and are switches that automatically return when the user releases his hand.

Further, the microcomputer 1 includes a liquid crystal display unit 2, a lens barrel drive circuit 3, a photometry circuit 4, a distance measurement circuit 5,
Feeding circuit 6, date imprinting circuit 7, power supply voltage detecting circuit 17
Etc. are connected. The liquid crystal display (LCD) 2 is arranged on the camera body (main body), and provides necessary information when setting a shooting mode, a date imprinting mode, etc. according to an output signal from the microcomputer 1. indicate. The lens barrel drive circuit 3 is connected to a motor 8 for driving a lens barrel (not shown) for accommodating a taking lens, and drives the lens barrel at a necessary timing according to an instruction from the microcomputer 1.

The photometry circuit 4 measures the light intensity and brightness of the subject at the required timing according to an instruction from the microcomputer 1, and transfers the photometry result to the microcomputer 1. The distance measuring circuit 5 measures the distance to the subject at a necessary timing according to an instruction from the microcomputer 1 and transfers the distance measuring result to the microcomputer 1. The feeding circuit 6 winds the film by one frame in accordance with an instruction from the microcomputer 1 and rewinds the film on a cartridge (not shown). The date imprinting circuit 7 imprints the date data in the microcomputer 1 on the film surface according to an instruction from the microcomputer 1.

The power supply voltage detection circuit 17 detects the voltage of the battery 30, which is the power supply. In addition to the above, the microcomputer 1 is also provided with the following circuits (not shown). The lens drive circuit drives the lens in response to a command from the microcomputer 1. The shutter drive circuit drives a shutter (not shown) in response to a command from the microcomputer 1. The strobe drive circuit drives a strobe (not shown) in response to a command from the microcomputer 1. The film frame feed detection circuit detects that one film of the film has been fed, or that the rewinding of the film to the cartridge has been completed.

The microcomputer 1, the liquid crystal display (LCD) 2, the lens barrel drive circuit 3, the photometry circuit 4, the distance measurement circuit 5, the feeding circuit 6, the date imprinting circuit 7, and the like are provided with a battery 30.
Is connected and power is supplied. The microcomputer 1 is a one-chip microcomputer and controls the entire sequence of the camera. Further, it also has a function of driving the liquid crystal display unit 2. The operation of the present embodiment will be described below, but it is assumed that the following are preconditions for the operation.

In this embodiment, the strobe mode is
There are five types: automatic light emission, red-eye reduction, light emission inhibition, forced light emission, and slow sync. In addition, the date mode includes "year / month / day", "month / day / year", "day / month / year", "date / time",
Assume that there are five modes of "off". Further, there are a selection mode and a correction mode for setting the date mode. In the selection mode, any one of the above five date modes is selected. In the correction mode, the time setting of the clock data (year, month, day, hour, minute) to be imprinted is corrected.

In this embodiment, the display of the date such as the year, month and day may be simply referred to as "date display", and the display of the number of filmed frames of the film may be simply referred to as "counter display". Under the above prerequisites, the flow of the entire operation of this embodiment will be described. FIG. 2 is a flow chart for explaining the overall operation of the embodiment of FIG. 1, and the flow chart of FIG. 2 will be described below. In this flow chart, the meaning of the steps in the flow chart is represented by the symbol "S", and the battery 30 has already been inserted.

The process starts from S100. S11
1, the battery 30 is mounted and the battery cover switch 16
When is turned on (changed), the process branches to S112 to perform the date initial setting process. In S101, the main switch (M
When the SW) 9 is detected to be ON, the process branches to S107 to execute the main switch process (MSW process).

At step S102, a flash switch (SB
When S) 10 is detected to be turned on, the process branches to S108 to call the flash switch process (SBS process). S10
3 detects that the mode switch (MOS) 11 is turned on, the process branches to S109, and the mode switch process (MO
S processing) is called. When it is detected that the half-push switch 12 is turned on in S104, the process branches to S110 to call the photographing process. In S105, it is determined by the lens barrel position detection switch 14 whether or not the lens barrel is in the retracted position. If the lens barrel is not in the retracted position, the process returns to S101, and if the lens barrel is in the retracted position, the process proceeds to S106 and ends. .
Next, the processing of each subroutine in the flowchart of FIG. 2 will be described.

FIG. 3 shows S11 in the flow chart of FIG.
2 is a flowchart showing a date initial setting process of No. 2, and this flowchart will be described below. S11 of FIG.
If the change of the battery cover switch 16 is confirmed in step 1, S112
Go to and call the date initialization process. The date initial setting process starts from S130 in FIG. 3, and the data initial setting process for initially setting the timer, the flag and the like is performed in S131. In step S132, the imprint mode is turned off.

Next, in S133, the date calendar is initialized to a predetermined date (January 1, 1993 in this example), and in S134, the clock is set to a predetermined time (0:00 in this example). The initial setting is 00 minutes), and clocking is started in S135. Then, in S136, the liquid crystal display unit 2
Is turned off, and it is checked in S137 whether or not it is in the retracted position. If it is not in the retracted position, the lens barrel retracting process, that is, the retracting process is performed in S138, and then S139.
2 returns to the process of FIG. 2, but in the case of the retracted position in S137, the process immediately returns to the process of FIG. FIG. 4 is a main switch process (M107) of S107 in the flowchart of FIG.
This is a flowchart showing (SW processing), and this flowchart will be described below.

In S101 of FIG. 2, the main switch (MS
When it is confirmed that W) 9 is turned on, the process proceeds to S107, and the main switch process shown in FIG. 4 is called. The main switch process starts from S200, and first, in S212, the power supply voltage detection circuit 17 checks the power supply voltage level to determine whether it is equal to or higher than a preset first voltage. If it is equal to or higher than the first voltage, the process proceeds to S213,
If it is lower than the voltage, the process proceeds to S214.

In step S213, the liquid crystal display unit 2 lights the counter display, and the flow advances to step S219. In S214, it is further determined whether the power supply voltage level is equal to or higher than the second voltage. If it is equal to or higher than the second voltage, the process proceeds to S215, and if it is lower than the second voltage, the process proceeds to S216. In S215,
The liquid crystal display unit 2 blinks the display 21 in FIG. 9A to notify the photographer that the battery level is low, and the process proceeds to S219.

In step S216, all the displays on the liquid crystal display unit 2 are turned off, and the process proceeds to step S217 to check the battery NG.
The (B.C.NG) flag is set and the process returns from S218 to the flow of FIG. In S219, B. C. The NG flag is released and the process proceeds to S201. In step S201, the state of the lens barrel position detection switch 14 is detected to determine whether the lens barrel is in the retracted position.

When the lens barrel is in the retracted position, the process proceeds to S202, the date correction mode flag is cleared, and the photographing mode is displayed on the liquid crystal display unit 2 in S203 (see FIG. 9A).
In S204, the microcomputer 1 drives the motor 6 through the lens barrel drive circuit 5 to move the lens barrel to the photographing position, and then in S209, it is confirmed whether the date imprinting mode is off or not. If the print (PRINT) mark on the liquid crystal display unit 2 is turned off and is on, S211 is performed.
After illuminating the print mark with, press S2
The process shifts to the process of determining the state of the main switch 07.

When it is determined in S201 that the lens barrel is not in the retracted position, the motor 8 is driven by the lens barrel drive circuit 3 in S205, and the lens barrel is retracted to the retracted position.
In step S206, the date imprinting data is displayed on the liquid crystal display unit 2 (93 (year) in FIG. 9 (c) 10
(Month) (M) 25 (Sun) is displayed). After that, the process proceeds to the process of determining the state of the main switch process of S207.

In the main switch processing of S207, the main switch 9 is waited for until it is turned off.
When is turned off, the process returns from S208 to the flowchart of FIG. 5 and 6 are S108 in the flowchart of FIG.
It is a flow chart showing a flash switch process of
The flowchart will be described below. S1 in FIG.
When it is confirmed that the strobe switch (SBS) 10 is turned on in 02, the process proceeds to S108 to call the strobe switch process (SBS process) shown in FIG.

The strobe switch process starts from S300, and first, in S318, B. C. The presence / absence of the NG flag is confirmed, and if present, the process proceeds to S309, and if not present, the process proceeds to S301. In step S301, the state of the lens barrel position detection switch 14 is detected to determine whether the lens barrel is in the retracted position.

If the lens barrel is not in the retracted position, the flow advances to S310 to switch the SB mode (strobe mode). S
There are five types of B mode: automatic light emission mode, red-eye reduction mode, light emission prohibition mode, forced light emission mode, and slow sync mode.
When in the red-eye reduction mode, it is in the flash off mode, when it is in the flash off mode, it is in the flash mode, when it is in the flash mode, it is in slow sync, and when it is in slow sync, it is in the auto flash mode, Switch each. After that, the process proceeds to S311, and waits for the flash switch 10 to be turned off. When the flash switch 10 is turned off, S3
Returning to the flowchart of FIG. 2 from 09.

In S301, when the lens barrel is in the retracted position, the process proceeds to S302, and it is confirmed whether or not the date correction mode has already been entered. The fact that the date correction mode has not been entered is a selection mode. In this case, the process proceeds to S303, and flag A is set (set to "1") to identify that the flash switch 10 is being pressed for the first time. It can be so.

Then, in S304, a 2-second timer (which is incorporated in the microcomputer 1 (operates as a clock)) is started, and it is confirmed in S305 whether or not the strobe switch 10 is continuously turned on. That is, after the 2-second timer starts, in S305, the flash switch 10
Is off, and if it is off, S350 in FIG.
If the ON state continues, the process proceeds to step S306 and it is determined in S306 whether the time is up. If the time is not up, the loop of S305 and S306 is repeated.

When the timer times out in S306 (when the flash switch 10 is turned on for 2 seconds or more), the date correction mode flag is set in S307 (this flag is determined when the process proceeds to S302 again later). ). The date correction mode is entered while the date correction mode flag is set. Then, proceed to S308,
The left part of the liquid crystal display unit 2 is displayed by blinking (as will be described later,
The blinking display can be corrected).

The date display on the liquid crystal display unit 2 is displayed in three blocks of a left part, a middle part and a right part, and each block is displayed in a 2-digit decimal number (see FIG. 9). . The correction is performed in the order of the left part, the middle part, and the right part. When the date correction mode is entered, the left part first flashes to indicate that the left part can be corrected. For example, when the selection mode is "Date", "Year" is displayed on the left side and "Month" is displayed on the middle section.
Is displayed on the right side. When the date correction mode is entered, first, the "year"("89" in the example of FIG. 9A) on the left is blinked to indicate that the year can be corrected.

If it is determined in S302 that the date correction mode has already been entered, the process proceeds to S312. S312
Then, it is confirmed whether or not the right part (“24” in FIG. 9C) is blinking. The right part is blinking means
Since all the corrections have already been completed, S314
Then, the blinking display of the liquid crystal display unit 2 is terminated, and the date correction mode flag is canceled in S315. This exits the date correction mode. Then, in S317, the flash switch 10
Wait for the turn off, and when the flash switch 10 turns off, S
Returning to the flowchart of FIG.

If the right portion is not blinking in S312, the correction digit (flashing position) is shifted. Left part ("'in Fig. 9 (a)
89 ”) is blinking, the middle part (“ M 1 in FIG. 9 (b) ”
2 "), if the middle part is blinking, it is switched to the right part (" 24 "in FIG. 9C). After that, S316
Waits for the strobe switch 10 to turn off, and when the strobe switch 10 turns off, the process returns from S309 to the flowchart of FIG.

At S305, the flash switch 10
When is turned off (when the strobe switch 10 is turned on once and turned off before two seconds elapse), the process proceeds to S350 in the flowchart of FIG. 6, and it is determined whether the flag A is “0” or “1”. If it is "0" (if the flash switch 10 is turned on again for 2 seconds, the flag A is reset to "0" in S354 described later), S3
The 5 second timer is started at 51, and S353 and S35 are started.
6, the loop of S357 is entered, and the strobe switch 10 is on-waiting. When the flag A is "1" in S350 (when the flash switch 10 is turned on / off only once), the 2-second timer is started in S352, and the loop of S353, S356, and S357 is entered.
The next waiting for the flash switch 10 to be turned on.

In the loop of S353, S356 and S357, the strobe switch 10 is activated within 5 seconds or 2 seconds.
When is turned on again, the process proceeds to S354, the flag A is set to "0", and the date mode switching process is performed in S355. There are 5 date modes: "year / month / day", "month / day / year", "day / month / year", "date / time / minute", and "off". When "year / month / day" is set to "month / day / year", When it is "month day year", it becomes "day month year",
When the date is "day, month, year," it is switched to "date and time," and when it is "date, minute," it is switched to "off." After that, the process returns to S304 to start the 2-second timer (timer for determining whether to enter the date correction mode). Hereinafter, the process proceeds to S305 and returns to the above-described operation from S305.

Further, in the loop of S353, S356, and S357, when other switches (main switch 9 and the like) are turned on in S356, the process returns from S358 to the flowchart of FIG. In S357, the flash switch 10 is not pressed for 5 seconds (S351).
Or when the timer time of 2 seconds (S352) has elapsed,
From S358, the process returns to the flowchart of FIG.

The timer is shortened to 2 seconds in S353, while it is increased to 5 seconds in S351 for the following reason. That is, when the flag A is "1" (when the strobe switch 22 has been turned on only once), the strobe switch 22 (or another switch) is turned on again to allow the user to switch the mode. It is determined whether or not the user has the intention (If the mode is switched by one operation, the mode is immediately switched when the switch is inadvertently operated. In order to prevent this, it is necessary to perform the operation twice in 2 seconds for mode switching), but a long time is not required for this intention confirmation. Therefore, in S352, a short time of 2 seconds is set. On the other hand, when the flag A is “0”, it is time to switch the date mode, and therefore it is necessary to give the user a longer consideration time. Therefore, in S351, it takes a long time 5
Set the seconds. FIG. 7 is a flowchart showing the mode switch processing (MOS processing) of S109 in the flowchart of FIG. 2, and this flowchart will be described below.

In S103 of FIG. 2, the mode switch (MO
If it is confirmed that (S) 11 is turned on, the process proceeds to S109 to call the mode switch process shown in FIG. The mode switch process starts from S400, and first, in S408, the B. C. The presence / absence of the NG flag is confirmed. If yes, the process proceeds to S405, and if not, the process proceeds to S401.

At S401, the lens barrel position detection switch 1
Read state 4 and check if the lens barrel is in the retracted position. If the lens barrel is not in the retracted position, the process advances to step S406 to switch the shooting mode. There are four shooting modes: a normal shooting (cancellation) mode, a forced ∞ mode, a single self mode, and a double self mode, and the modes are sequentially switched by turning on the mode switch 11.

In the forced ∞ mode, when the release button is fully pressed, the focusing lens is set to infinity and the shutter operates (opens). In the single self mode, the shutter operates when a fixed time has elapsed since the release button was pressed all the way down. In the double self mode, self-timer shooting is performed twice. In the cancellation mode, normal shooting is performed. After that, S406 to S40
7 and waits until the mode switch 11 turns off. When the mode switch 11 turns off, the process returns from S405 to the flowchart of FIG.

When it is determined in S401 that the lens barrel is in the retracted position, it is confirmed in S402 whether the date correction mode has already been entered (if the strobe switch 10 is turned on for 2 seconds or more in the retracted state, The date correction mode is set in S307 of FIG. 4, and after the correction on the right side is completed, the correction mode is released in S315). When not in the date correction mode, the process proceeds to S404 and waits for the mode switch 11 to be turned off. When the mode switch 11 is turned off, the process returns from S405 to the flowchart of FIG.

If the date correction mode is entered in S402, the clock data is shifted in S403. Add 1 (or -1) to the data ("year", "month", "day", "hour" or "minute") of the block that is blinking at that time among the left part, middle part and right part . For example, as shown in FIG. 10A, when the display mode is the date and the “Year” on the left side is set to 88 and is blinking, the year “88” is changed to “89”.
(Or "87") and blinks (Fig. 10
(B)). After that, in S404, it is confirmed that the mode switch 11 is off, and the process returns from S405 to the flowchart of FIG. Next, the details of the shooting processing subroutine of S110 of FIG. 2 will be described with reference to the flowchart of FIG. This process starts from S500, and in S501, it is determined whether or not the lens barrel housing the taking lens is in the retracted position. When the lens barrel is in the retracted position, the lens barrel position detection switch 14 is on. At this time, shooting is prohibited, and the process proceeds to S515 to end the shooting process and return to the flowchart of FIG.

When it is determined in S501 that the lens barrel position detection switch 14 is off (when the lens barrel is in the extended position), the process proceeds to S522, in which the power supply voltage detection circuit 17 checks the power supply voltage level. , It is determined whether the voltage is equal to or higher than a preset first voltage. If it is equal to or higher than the first voltage, the process proceeds to S523, and if it is lower than the first voltage, the process proceeds to S524.

In S523, the counter display or the date display is lit on the liquid crystal display unit 2, and the process proceeds to S518. S
At 524, it is further determined whether the power supply voltage level is equal to or higher than the second voltage. If the second voltage or more, S5
25, and if it is smaller than the second voltage, proceed to S526.

In step S525, the liquid crystal display unit 2 is displayed as shown in FIG.
21 is blinked to notify the photographer that the battery level is low, and the process proceeds to S518. In S526, all the displays on the liquid crystal display unit 2 are turned off, and the process returns to S501 to wait for the recovery of the power supply voltage. In S518, from the state in which the display on the liquid crystal display unit 2 displays the number of frames (36) shown in FIG. 9A, the date shown in FIG.
You can switch to the state of displaying (day). In this way, by using the same display unit for the counter display and the date data display, it is possible to share some of both functions, and even if both functions are provided, it is possible to prevent the shape from increasing in size and reduce the cost. Very few ups are required.

Next, in S502, photometric processing is executed. That is, the microcomputer 1 controls the photometric circuit 4 to execute the photometric processing. At this time, the photometric circuit 4
Calculates the brightness of the subject from the amount of light input to the built-in light receiving element, and calculates the opening time of the shutter (not shown). At the same time, it is determined whether or not the brightness is low, and it is determined whether or not strobe light emission is necessary. Now, when the automatic light emission mode is set, it is determined whether or not the strobe is caused to emit light according to the brightness. When the light emission prohibition mode is set, strobe light emission is prohibited regardless of the brightness. When the forced light emission mode is set, the flash is emitted regardless of the brightness.

Next, in S503, distance measurement processing is executed. At this time, the microcomputer 1 controls the distance measuring circuit 5 to execute the distance measuring process. The distance measuring result is output from the distance measuring circuit 5 to the microcomputer 1. S504
In step S502, it is determined whether it is determined in step S502 that flash light emission is required. When it is determined that the strobe light emission is necessary, the process proceeds to S516, and it is determined whether or not the charging of the strobe light is completed. If charging is not completed, strobe light cannot be emitted. Therefore, the process proceeds to S517 and waits until the half-push switch 12 is turned off (the release button is opened). When the half-push switch 12 is turned off, the date data display is switched to the counter display in S521. Then, the flow returns from S515 to FIG.

If the charging of the strobe has already been completed, the process proceeds from S516 to S505. Even if it is determined in step S504 that the strobe light need not be emitted, the process proceeds to step S505. In S505, it is determined whether or not the release switch 13 has been turned on. S
When it is determined in 505 that the release switch 13 is off, the process proceeds to S506, and it is determined whether or not the halfway press switch 12 is on. Half-press switch 12
When is on, the process returns to S505, and a process of determining whether or not the release switch 13 is on is performed.

That is, the processing of S505 and S506 is repeated by half-pressing the release button (not shown). When the half-push switch 12 is turned off (the half-push state of the release button is released), the date data display is switched to the counter display in S520. And
The flow returns from S515 to FIG.

In S505, the release switch 13
If it is determined that is turned on, the process proceeds to S519, the date display is returned to the counter display, it is determined in S507 whether the self mode is set, and if the self mode is set, the process proceeds to S508. Proceed and wait 10 seconds. When the self mode is not set, the processing of S508 is skipped.

Next, in S509, lens drive processing is performed. At this time, the microcomputer 1 controls a lens driving circuit (not shown) to move the taking lens to a predetermined position. Next, in step S510, the shutter opening / closing operation is performed, and if it is necessary to use the strobe at the same time, the strobe is driven. That is, at this time, the microcomputer 1 controls a shutter drive circuit (not shown) to operate the shutter for a predetermined time. This operation time (opening time) is calculated by the process of S502. At this time, the microcomputer 1 also controls a strobe drive circuit (not shown) to cause the strobe to emit light as necessary.

Although not shown in the flow chart, the charging of the strobe is started after the strobe is emitted, and when the charging is completed, the charging is stopped. Next, in S511, the lens return process is executed. That is, at this time, the microcomputer 1 controls the lens driving circuit to return the photographing lens to the original position.

In S512, the date imprinting process is executed. That is, in S209 of FIG. 3, when the imprinting of the date is instructed, the microcomputer 1 obtains the date data obtained as a result of the time measurement by the built-in clock device (the date data is displayed on the liquid crystal display unit 2). Is output to the date imprinting circuit 7 and imprinted on the film. In this embodiment, the date is imprinted before the film is wound by one frame.
During the winding (feeding) of the film, for example, a plurality of LEDs (not shown) may be made to emit light so that the date may be imprinted in a dot shape. Next, in S514,
The film winding process is executed. That is, at this time, the microcomputer 1 controls the feeding circuit 6 to start film winding.

Next, in S514, the half-press switch 12
2 is turned off (waiting until the release button is released), and when the half-push switch 12 is turned off, the process proceeds to S515 and returns to the flow of FIG. . In these processes, the display of the liquid crystal display unit 2 is blinked or turned off depending on the battery level, but S115 in FIG.
The timekeeping function started by does not stop. In the above embodiment, the warning display when the battery level is low is described as blinking only 21 in FIG. 9, but the entire display unit may be blinked.

Also, the position of the lens barrel is detected by the lens barrel position detection switch 14, and when the lens barrel is in the extended position, the state mode is set to the operating state mode, and when it is in the depressed position, it is not operated. Although the mode is set to the mode, the state mode of the camera is
A barrier is provided that opens and closes between the position that allows light to enter the taking lens and the position that prohibits light.When this barrier is in a position that allows light to enter the taking lens, the operation mode is set. It is also possible to set the non-operation mode when it is in the prohibited position. In addition, an operating switch that is operated when turning the power on or off is provided.When the power is turned on by operating this operating switch, the state mode is set to the operating mode, and when the power is turned off, the non-operating mode is set. It is also possible to

When the film is set on the camera,
The present invention can be applied to a prewind type camera in which the film is wound up from the cartridge and the film is rewound by one frame each time one frame is photographed.

[0056]

As described above, according to the present invention, the power consumption state is displayed regardless of the non-shooting state and the shooting preparation state, so that the photographer can always confirm the power consumption state. You can do it without mistakenly replacing the power supply,
This has the effect of avoiding an uncapable state.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a camera with a data imprinting function of the present invention.

FIG. 2 is a flowchart illustrating the operation of the embodiment of FIG.

FIG. 3 is a flowchart showing detailed processing of a subroutine of date initial setting processing in S112 of FIG.

FIG. 4 is a main switch (MS
It is a flow chart which shows detailed processing of a subroutine of W) processing.

5 is a strobe switch (SBS) of S108 of FIG.
8 is a flowchart showing more detailed processing of a processing subroutine.

FIG. 6 is a flowchart following on from FIG.

FIG. 7 is a mode switch (MO
It is a flow chart which shows detailed processing of a subroutine of S) processing.

FIG. 8 is a flowchart showing more detailed processing of a shooting processing subroutine in S110 of FIG.

FIG. 9 shows a shooting mode display on the liquid crystal display unit 2 of FIG.
It is a figure which shows the example of a date display.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Microcomputer 2 Liquid crystal display section 3 Lens barrel drive circuit 4 Photometric circuit 5 Distance measuring circuit 6 Feeding circuit 7 Date imprinting circuit 9 Main switch 10 Strobe switch 11 Mode switch 12 Half-press switch 13 Release switch 14 Lens barrel position detection switch 16 Battery cover switch 30 Battery

Front Page Continuation (72) Inventor Sone Isao 3 2-3 Marunouchi, Chiyoda-ku, Tokyo Inside Nikon Corporation

Claims (3)

[Claims] 1. A display function having a switching means for switching between a non-shooting state and a shooting preparation state, a detection means for detecting a power consumption state of the power supply, and a display means for displaying based on an output of the detection means. In the camera, the display means displays the display regardless of the non-shooting state and the shooting preparation state. 2. The camera with a display function according to claim 1, wherein the display means blinks or turns off the display. 3. The camera with a display function according to claim 2, further comprising a clocking means, which clocks regardless of whether the display blinks or goes out.