JP3223625B2 - Camera with built-in data imprinting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera with a built-in data projection device which can be switched to any one of a plurality of photographing screen sizes.

[0002]

2. Description of the Related Art In recent years, one of photographing functions often used in cameras is one that can selectively switch a plurality of photographing screen sizes. This is a so-called panorama function, which obtains a pseudo panoramic picture by blocking the upper and lower portions of the photographing screen. In the panorama function, there is also known a function in which a date, a time, and the like can be imprinted on each of a plurality of photographing screen sizes.

FIG. 4 is a diagram showing, as a plurality of photographing screen sizes, the photographing position and character size of the photographing data on both the full-size and panoramic-size photographing screens. As shown in FIG. 4, it is necessary to change the imprint date character size and the imprint position on each photographing screen.

[0004]

However, as shown in FIGS. 2 and 3, when a single LED array 54, which is a light emitting means for imprinting data, is mounted on an imprinting substrate 58, data for panoramic size photographing is obtained. The imaging lens 57 for imprinting and the imaging lens 55 for imprinting data at the time of full-size imaging have different distances to the LED array 54. That is, assuming that the length L1 of the optical path 59 for imprinting data during full-size shooting and the length L2 of the optical path 60 for imprinting data during panoramic-size shooting, L
1 <L2.

Therefore, if the light emission time of the LED array 54 for data imprinting is the same between the panorama size photographing and the full size photographing, the amount of light emission becomes the same, and each copy on the film surface 53 is performed. The exposure (brightness) of the embedded characters differs from each other. This causes the following problem. In other words, if the light emission time of the LED array is set according to the full-size shooting, the imprinted characters are dark and difficult to see at the time of panorama size shooting. Conversely, if the light emission time is set according to the panorama size shooting, In addition, there is a problem that the characters to be imprinted are too conspicuous during full-size shooting.

[0006] This problem is caused by providing a light emitting means and an imprint substrate for full size photography and panoramic photography, respectively.
This would be solved if the distance between the light emitting means and the imaging means was the same for full-size shooting and for panoramic shooting, but that would increase the number of parts and would increase cost. Would. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a camera with a built-in data imprinting device that can use the same brightness for characters to be imprinted during full-size shooting and panoramic shooting even though a single light emitting unit is used.

[0007]

According to the present invention, in order to achieve the above-mentioned object, the photographing screen size is set to at least the first,
In a camera having a built-in data printing device that can be switched to any one of the second screen sizes, a single light emitting means (54) for printing data on a film surface and light emitted from the light emitting means are provided. Image forming means (55, 57) for forming an image at a first position on a film surface in the first screen size, and forming an image at a second position on the film surface in the second screen size, respectively; Controlling the operation, wherein the light emission time of the light emitting means is made different from each other in the first and second screen sizes, and the exposure degree of the data imprint is made equal in each of the first and second screen sizes. Light emission amount control means (10).

[0008]

According to the present invention, the light emission time of a single light emitting means is made different from each other in the first and second screen sizes, and the exposure degree of data imprinting is made equal in each of the first and second screen sizes. , The first and second screen sizes can keep the exposure degree of imprinting data constant.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a circuit diagram of the present embodiment. Battery 8
Are connected to the motor drive circuit 13 and the constant voltage circuit 9. The constant voltage circuit 9 is a stabilized power supply circuit that can extract a constant power supply even if the battery voltage fluctuates. The stabilized power is supplied to the CPU 10, the LED drive circuit 11, and the interrupter 12.

The CPU 10 includes a panorama switch 24 which is turned on when the panorama size is selected as the photographing screen size of the camera, a half-press switch 15 which is turned on by half-pressing the release button of the camera, and a full-press of the release button. The release switch 16 which is turned on by the switch is connected. Further, an LED drive circuit 11 and a motor drive circuit 13 are connected to the CPU 10.

The CPU 10 and the LED drive circuit 11 are connected to each other by seven control signal lines 17 to 23. The control signals transmitted and received on the control signal lines 17 to 23 correspond to the light emitting elements LEDs 1 to 7 on a one-to-one basis. That is, the control signal line 17 is
1, the control signal line 18 corresponds to the light emitting element LED2, the control signal line 19 corresponds to the light emitting element LED3, the control signal line 20 corresponds to the light emitting element LED4, the control signal line 21 corresponds to the light emitting element LED5, and the control signal line 22 corresponds to the light emitting element LED5. LED
6, the control signal lines 23 correspond to the light emitting elements LED7, respectively.

The light emitting elements LED1 to LED7 are independently controlled by corresponding control signals. For example, when a control signal for commanding a lighting operation is output via the control signal line 21, the light emitting element LED5 is turned on and the control signal line 2
When a control signal for instructing a lighting operation is output via 0, the light emitting element LED4 is turned on. In the LED drive circuit 11,
A total of seven light emitting elements of a group of light emitting elements LED1 to LED7 are connected. The output signal of the interrupter 12 is a CPU
10 is connected. Further, a film feed motor 14 is connected to the motor drive circuit 13. CPU1
Reference numeral 0 denotes a one-chip microcomputer which controls the entire sequence of the camera. The motor drive circuit 13 is a CPU
The film feed motor 14 is controlled by a control signal from the
Drive control.

FIG. 2 is a perspective view showing the structure of the data imprinting section in the present embodiment. In FIG.
3 is in contact with the roller 51 by the pressing spring 52.
When the film 53 is moved by a film feed motor (not shown), the roller 51 rotates. Since the roller 51 and the encoder 50 are integrated, when the roller 51 rotates, the encoder 50 also rotates. In the encoder 50, non-transmissive portions 50a and transmissive portions 50b are provided alternately radially at predetermined rotation angles. By the rotation of the encoder 50, the transmitting part and the non-transmitting part of the encoder 50 alternately pass between the light projecting part and the light receiving part of the photo-interrupter 12, and this is detected by the photo-interrupter 12. Output FSS.

LE as a light emitting means for imprinting data
The D array 54 has seven LEDs integrated,
This corresponds to the light emitting elements LED1 to LED7 in FIG. An imaging lens 55 for imprinting data at the time of full-size photographing uses the light emitted from the LED array 54 for the film 53.
Image on the surface of. At this time, an optical path 59 for imprinting data at the time of full-size shooting is formed.

An image forming lens 57 for imprinting data at the time of panoramic size shooting forms an image of the light emitted from the LED array 54 on the surface of the film 53. At this time, an optical path 56 for imprinting data at the time of panorama size shooting is formed. L
The ED drive circuit 11 and the LED array 54 are both mounted on an imprint substrate 58. In FIG. 2, an aperture 31c is opened on the back surface 31b of the camera body 31,
The inner rail 34 extends along the upper and lower sides of the aperture 31.
a and 34b are provided. The film 53 passes over the aperture surface, and is spooled by the spool 32 into the spool chamber 3.
3 is wound up. The lower screen size changing frame 37 is rotatably supported by the partition wall 31a of the camera body 31 by the shaft 35, and is turned in the direction of arrow A by a screen size switching mechanism (not shown). To change the screen size between the full-size shooting screen and the panorama-size shooting screen (FIG. 2 shows a case where the full-size shooting screen is selected).

The mask 36 is engaged with a pin 37a and an engagement groove 36a provided in the lower screen size changing frame 37, and is moved in the direction of arrow B in conjunction with the screen size switching. Then, at the time of panorama size photographing, the second projection optical path 56 is made to reach the film surface by the opening 36b, and at the time of full size photography, the second projection optical path 56 is blocked.

FIG. 4 shows the imprint date character size and imprint data character position 101 on the full-size shooting screen, and the imprint data character size and imprint data character position 102 on the panorama size shooting screen. Have been. Now, in the full-size and panorama-size shooting screens, it is necessary to change the printing date character size and the printing position for each screen (see FIG. 4). For this reason, the imaging lens 57 for imprinting data at the time of panorama size shooting and the imaging lens 55 for imprinting data at the time of full size shooting are different from each other in distance from the imprint substrate 58 (FIG. 2, see FIG. 3).

Therefore, if the length of the optical path 59 for imprinting data during full-size shooting is L1, and the length of the optical path 56 for imprinting data during panoramic-size shooting is L2, then L1 <L2. At this time, if the light emission amount of the LED array 54 during full-size shooting is the same as the light emission amount of the LED array 54 during panorama-size shooting, the film 53
, The degree of exposure (brightness) of each imprinted character on the surface is different.

Therefore, in the present embodiment, the light emission time of the LED array 54 during panoramic size shooting is made longer than the light emitting time of the LED array 54 during full size shooting, so that the LED array 54 during panoramic size shooting is obtained. 5
4 make the amount of light emitted more than that of full-size shooting,
The degree of exposure of each printed character on the film surface 53 is made equal. As a result, the imprint data at the time of full-size shooting and the imprint data at the time of panorama-size shooting with the same degree of exposure are imprinted on the film surface.

In this embodiment, seven LEDs are used.
Has been described as an example in which one line of characters is formed and one character is formed of five lines. However, when data such as date and time is expressed by 7 × 5 dots, all LEDs are independently lit. . In the above-described first embodiment, an embodiment using two printing optical systems has been described. However, in the second embodiment described below, a position where a single printing optical system is adjusted to each screen size is used. Is to be moved. This second embodiment will be described with reference to FIGS. 8 and 9 only for differences from the first embodiment.

In FIG. 8, an imaging lens 60 for imprinting data is a first lens which can be imprinted during full-size shooting.
The position can be displaced to a position (indicated by a solid line) and a second position (indicated by a dashed line) where imprinting can be performed during panorama size photographing. The lower screen size change frame 37 has a pin 3 at one end.
7b is provided. The pin 60a of the imaging lens 60 is engaged with the engagement groove 63a of the imaging optical system switching plate 63, and the pin 37b of the change frame 37 is engaged with the engagement groove 63b.
Engage. Therefore, the switching plate 63 is moved in the direction of the arrow C in conjunction with the switching of the screen size, and moves the imaging optical system to the second position.

As in the first embodiment, if the length of the optical path for imprinting data during full-size shooting is L1 and the length of the optical path for imprinting data during panorama-size shooting is L2, then it is L1. <L2. Next, the operation of this embodiment will be described. A series of processes shown in the flowcharts of FIGS. 5 to 7 show portions related to the present embodiment in the program built in the CPU 10. Further, the FSS counter, timer, and the like described in the flowchart and the printing time in Table 1 are all incorporated in the CPU 10.

FIG. 5 is a flowchart showing a photographing process of the camera of the present embodiment. The flow of the photographing processing operation of the camera of this embodiment will be described with reference to FIG. Prior to the description, it is assumed that the battery 8 has already been inserted. When the half-press switch 15 is turned on, the process starts from S300. First, in S301, the CPU 10 sends a signal to a photometric circuit (not shown) to execute photometric processing. Although the details of the photometric processing are omitted, the brightness of the subject is calculated from the amount of light input to the light receiving element in the photometric circuit, and the opening time of the shutter is obtained.

Next, in step S302, a ranging start signal is sent to a ranging circuit (not shown), and the ranging circuit starts ranging processing. Although the details of the distance measurement processing are omitted, when the distance measurement is completed, the distance measurement circuit outputs the distance measurement result to the CPU 10. After that, S303,
It proceeds to the loop of S304. If the release switch 16 is not turned on in S303, and if the half-press switch 15 is confirmed to be off in S304, the process ends in S305, and no photographing is performed. If the half-push switch 15 is not turned off in S304, the process returns to S303. When the release switch 16 is confirmed to be on in S303, the process proceeds to S306.

In S306, the lens is driven to a predetermined position in accordance with the distance measurement value obtained in S302. Subsequently, S307
Then, the shutter is opened and closed based on the shutter opening time obtained in S301. After the exposure operation is performed, the lens is returned to the initial position in S308. If the panorama switch 24 is confirmed to be on in S309, the process proceeds to S310. In S310, the LED array emission time at the time of panorama size shooting is selected in consideration of the ISO sensitivity of the film (see Table 1), and the process proceeds to S312.

On the other hand, if it is confirmed in step S309 that the panorama switch 24 is off, the flow advances to step S311 to select the LED array light emission time for full-size shooting in consideration of the ISO sensitivity of the film (see Table 1), and the flow advances to step S312. Further, in step S312, the film is wound up, and the data is simultaneously printed on the film surface in the winding processing loop.
Details of this winding processing will be described later. Then, the process proceeds to S313, and waits until the half-press switch 15 is turned off. S31
After confirming that the half-push switch 15 is turned off in S3, S314
Ends the processing.

[0027]

[Table 1]

FIGS. 6 and 7 are flowcharts showing the winding process in the present embodiment. The processing content of S309 in FIG. 5 corresponds to the hoisting processing in FIGS. Hereinafter, in the winding process of the present embodiment, one frame of the film corresponds to 360 edges of the FSS signal. In addition, data imprinting is executed from the 200th edge during the feeding of one frame.
The printing operation is executed between the 0 edge and the 280 edge.

In FIG. 6, first, an end detection timer is started in S101. The end detection timer is a timer for judging whether the film has reached the end.
When the input stops for a certain period of time, the time is up. Next, the FSS counter is set to 0 in S102. The FSS counter is a counter for counting the number of FSS pulses input during the feeding of one frame of film. Further, in S103, normal rotation of the motor 14 is started. When the motor 14 rotates forward, the film is fed in the winding direction. When the motor 14 starts normal rotation, S10
4. Go to the loop of S105. In S104, it is determined whether or not the FSS has been inverted. In S105, it is determined whether or not the end detection timer has expired.

When the end detection timer expires in S105, the motor is braked for 100 ms in S110, and the motor is stopped in S111. In this case, the film has reached the end, and the winding process ends. on the other hand,
If the inversion of the FSS is detected in S104, the termination detection timer is cleared and restarted in S106. Next, S107
Adds "1" to the FSS counter. Next, S108
It is determined whether the FSS counter is 200 or not. Then, if the counter is 200, S200 of FIG.
Then, the data imprinting process is started. Meanwhile, FSS
If the counter is not 200, the process proceeds to S109, and it is determined whether the FSS counter is 360. If the counter is 360, the feeding of one frame has been completed, and the brake is applied for 100 ms in S110.
In step 1, the motor is stopped, and the winding process ends.

On the other hand, if the counter is not 360 in S109, the process proceeds to S105, goes through the loop of S104 and S105, and the time is up again in S105 or the FSS in S104.
Wait for the reversal. Now, in S108, the FSS pulse is 200
Now, the processing after proceeding to the step of determining whether or not the FSS has been reversed in S200 of FIG. 7 will be described. In FIG. 7, if it is determined in S200 that the FSS has been reversed, the process proceeds to S2.
At 02, the termination detection timer is cleared and restarted.

Next, "1" is set in the FSS counter in S203.
Is added. Further, the FSS counter is set to 280 in S204.
It is determined whether or not it has become. If the FSS counter is 280, the printing process ends, and the process proceeds to S105 in FIG. On the other hand, if the counter is not 280 in S204, S2
Go to 05. In S205, the imprint data inside the CPU 10 is read into the imprint area inside the CPU 10.
Subsequently, according to the read data, an imprint signal is output via the control signal lines 17 to 23 in S206, and imprinting of the data on the film surface is started.

Thereafter, in step S207, the process waits until the time selected in step S310 or S311 of FIG. 5 elapses. This time is the lighting time of the light emitting element LED 54, which is appropriately selected according to the size of the photographing screen. Then, S2
08, the imprinting signal is turned off, and the LE lit in S206.
D is completely turned off, and the imprinting operation ends. This allows
The first column of the desired character is imprinted. Here, the imprinting of a character is performed in a time series with respect to one character by dividing the character into a plurality of columns.

Thereafter, the flow returns to the loop of S201, and if the end detection timer has not expired, the flow proceeds to S200 to execute F
It is determined whether or not the SS has been inverted, here, whether or not the 201st edge of the FSS has been input. Then, when the 201st edge is input, the processing from S202 to S208 is similarly performed, and the second column is printed. Similarly, by sequentially printing the third row at the 202nd edge, the fourth row at the 203th edge, and the fifth row at the 204th edge, one character is printed. This is repeated for a predetermined number of characters. When the printing of the predetermined number of characters (here, up to 280 edges in the FSS edge) is completed, the process returns from S204 to the loop of S105 in FIG.

Although the present embodiment is directed to a screen capable of switching between two screen sizes, a full-size photographing screen and a panoramic photographing screen, the present invention is not limited to this. In addition to the size, it may be possible to switch to another new shooting screen (for example, a high-definition shooting screen size, etc.).

[0036]

As described above, according to the present invention, the light emission time of a single light emitting means is made different from each other in the first and second screen sizes, and the exposure of data imprinting is performed in the first and second screen sizes, respectively. Since the degrees are equalized, the exposure degree of imprinting data can be kept constant at the first and second screen sizes.

Therefore, it is not necessary to provide an imprint substrate for each size, and the number of parts and the number of assembling steps can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing an embodiment of the present invention.

FIG. 2 is a perspective view showing an imprinting portion according to the embodiment of the present invention.

FIG. 3 is a rear view showing a projection optical system according to the embodiment of the present invention.

FIG. 4 is a diagram showing shooting screens of full size and panorama size according to the present invention, and a print date character size and a print position on each screen.

FIG. 5 is a flowchart illustrating a photographing process according to the embodiment of the present invention.

FIG. 6 is a flowchart showing a hoisting process according to the embodiment of the present invention.

FIG. 7 is a flowchart showing a hoisting process according to the embodiment of the present invention.

FIG. 8 is a perspective view showing an imprinting portion according to a second embodiment of the present invention.

FIG. 9 is a rear view showing a projection optical system according to a second embodiment of the present invention.

[Explanation of symbols]

1 to 7, 54 LED array for imprinting data 10 CPU 11 LED drive circuit 24 Panorama switch 58 Imprinting board L1 Optical path length for imprinting data in full size shooting L2 Optical path for imprinting data in panoramic size shooting Long

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-27823 (JP, A) JP-A-3-197915 (JP, A) JP-A-58-79235 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) G03B 17/24 G03B 17/28

Claims (7)

(57) [Claims] 1. A photographing screen size is set to at least a first and a second.
In a camera having a built-in data projection device capable of switching to any one of screen sizes, a single light emitting means for projecting data onto a film surface, and light emitted from the light emitting means is transmitted to the first screen size. And an image forming means for forming an image at a first position on the film surface, and an image forming means for forming an image at the second position on the film surface in the second screen size, and controlling the operation of the light emitting means. A light emission amount control means for making the light emission time of the light emitting means different from each other in the first and second screen sizes and making the exposure degree of the data imprint equal in the first and second screen sizes. Camera with built-in data imprinting device. 2. The camera according to claim 1, wherein the first screen size is a full size photographing screen, and the second screen is a panoramic photographing screen. 3. The image forming means includes: a first image forming part for forming an image of light emitted from the light emitting means at a first position on a film surface; and a light emitting part emitting light emitted from the light emitting means on a film surface. 2
The camera according to claim 1, further comprising a second imaging unit configured to form an image at a position. 4. The first image forming section comprises:
4. The data copying apparatus according to claim 3, wherein the second imaging unit is provided at a second distance larger than the first distance from the light emitting unit. Embedded camera. 5. The image forming means moves the light emitted from the light emitting means so as to form an image at a first position on the film surface in the first screen size, and moves the light on the film surface in the second screen size. The camera according to claim 1, further comprising a single imaging unit that moves to form an image at the second position. 6. The single imaging section is separated from the light emitting means by a first distance when moved to the first position, and is moved from the light emitting means to the first position when moved to the second position. 6. The camera according to claim 5, wherein the second distance is larger than the second distance. 7. The light-emission-amount control means, when the photographing screen size is switched to the first screen size,
The light emitting time of the light emitting means is set to a first time, and the light emitting time of the light emitting means is set to a second time longer than the first time when the photographing screen size is switched to the second screen size. 2. The camera with a built-in data projection device according to claim 1, wherein the time is set to: