JP3379321B2 - camera - 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 for loading a film cartridge according to a novel system and taking a picture.

[0002]

2. Description of the Related Art A conventional camera has a back cover that can be opened and closed in a camera body, and a film cartridge can be loaded in the back cover.
This is done by opening the back cover, loading the film cartridge into the camera body, and then closing the back cover. By the way, considering that there are many requests for the photographer to be able to reconfirm the number of loaded films during shooting, in addition to forming a small window in an appropriate place on the back cover,
The outside light entering through the small window is configured not to affect the drawn film, and the number of films written on the surface of the film cartridge can be visually observed through the small window.

On the other hand, according to a novel film cartridge, for example, the one disclosed in US Pat. No. 5,347,334, the film cartridge has a light-shielding door which is openably and closably provided at a film outlet. Further, it is provided with a rotatable data disk which is provided at the end of the spool shaft (in the loaded state, for example, above the camera) and in which film number information is recorded in a bar code format. A camera corresponding to this film cartridge needs to include a drive source and a drive mechanism for opening and closing the light shielding door, and a reading member for reading the data on the data disk.

[0004]

Like the novel film cartridge described above, a space for installing a drive mechanism for opening and closing the light shielding door is required, and a reading member for reading the data on the data disk is required. In consideration of this, it is difficult to form a small window for viewing between the loading chamber and the upper part of the camera, and to prevent the external light from affecting the film. The number of films cannot be reconfirmed after the is loaded. In such a case, it is conceivable to read the number-of-films information on the data disc and display it on the display section provided on the surface of the camera body.
In this case, since a member for instructing the display is separately required, the number of parts increases, which increases the space for arranging parts, which leads to an increase in the size of the camera and an increase in manufacturing cost. There is.

The present invention solves the above problems, and an object of the present invention is to provide a camera capable of displaying the number of films without increasing the number of parts.

[0006]

SUMMARY OF THE INVENTION The present invention is a cartridge for mounting a film cartridge, which is provided inside a camera body having an opening and has information on the number of storable films of a film that can be pulled out, through the opening. A loading chamber, a lid for opening and closing the opening, and an operation member for instructing the opening of the lid are provided, and films are sequentially drawn out from the film cartridge loaded in the cartridge loading chamber for photographing. in camera for the detection and number reading means for reading the number of photographable images information, and number storage means for storing the number of photographable images information read, and display means, that the film is pulled out from the loaded film cartridge When the film is pulled out from the above-mentioned loaded film cartridge When the operation member is operated, shooting in the number storage means while prohibiting the opening of the lid
And a control means for displaying the shadowable number information on the display means (claim 1).

[0007] According to this configuration, number of photographable images information storage film of the film cartridge is read, its
Information on the number of possible shots is stored. Then, when the operation member is operated while the film is being pulled out from the film cartridge loaded in the cartridge loading chamber, the opening of the lid is prohibited and the photographing in the number storage means is performed.
The information on the possible number of sheets is displayed on the display means. by this,
Operating member, and an open instruction of the lid, and to be also used as the display instruction of the photographable number information.

Further, in the camera according to the first aspect, a prohibiting means for prohibiting the photographing operation, a counting means for counting the number of remaining photographable images for each photographing, and the counted remaining photographable number When the shooting operation is prohibited, the remaining number storage means to store the remaining number on the display means.
And a display control means for displaying the number of shootable images (claim 2).

[0009] According to this configuration, the remaining photographable <br/> number is counted for each shooting, when the photographing operation is prohibited, the counted remaining number of recordable images is displayed. This allows you to capture the rest of your shot even when you're not using the camera.
The available number is notified.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a camera according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a film cartridge used in this camera, and FIG. 2 is a perspective view of the film cartridge in an upside down state.

In this film cartridge, the film 12 is completely contained in the film cartridge 11. The film cartridge 11 has a cylindrical shape having an upper plate 13 and a bottom plate 14, and a film pull-out portion 15 is projectingly provided on a side surface parallel to the axis. A rotary shading door 17 is provided at the film outlet 16.

The upper plate 13 of the film cartridge 11 is
It is provided with a round hole 21 formed at the center of the shaft, a keyhole 22 provided at the tip of the film pull-out portion 15, and a notch portion 23 formed in a fan shape at an appropriate position on the peripheral portion. On the other hand, the bottom plate 14 of the film cartridge 11 has a round hole 31 formed at the center of the shaft, a keyhole 32 provided at the tip of the film pull-out portion 15, and a fixed interval on the same radius. The film cartridge 11 is formed in a circle shape, a half-moon shape, a cross shape, and a square shape.
It is provided with openings 33, 34, 35 and 36 for allowing the photographer to visually recognize the usage state of the film 12 stored in.

At the axial center of the film cartridge 11,
A spool 41 for feeding and rewinding the film 12 is rotatably provided. This spool 41
A groove 41a is formed in the groove. The spool 41 has a data disk 42, which will be described later, on the upper surface side.
A display disk 43 is fixed to the lower surface side, and the data disk 42 and the display disk 43 are the spool 41.
It is designed to rotate together with.

The display disk 43 is divided into a wide-angle fan-shaped portion 43a and a narrow-angle fan-shaped portion 43b by different colors, as shown by the broken line in FIG.
a is colored black, and the narrow-angle fan-shaped portion 43b is colored white. The central angle of the narrow-angle fan-shaped portion 43b is the angle at which the narrow-angle fan-shaped portion 43b does not simultaneously cover two adjacent openings of the openings 33, 34, 35, 36 (in the present embodiment, 90 ° or less).

When the film 12 accommodated in the film cartridge 11 is unused, that is, when it is not exposed, the narrow-angle fan-shaped portion 43b faces the opening 33, and the photograph is taken halfway, that is, partially exposed. , The narrow-angle fan-shaped portion 43b faces the opening 34, the narrow-angle fan-shaped portion 43b faces the opening 35 when exposed to the last frame, and the narrow-angle fanned portion 43b when the film 12 has been developed. Fan-shaped part 43b
The phase of the rotation stop position is set so that the arrow mark faces the opening 36. FIG. 2 shows that the film 12 is unexposed.

FIG. 3 is a plan view showing a radial bar code recorded on the data disk 42. The data disk 42 is divided into a black area BZ in which the entire surface is black and a code area CD in which predetermined information is coded.

The black area BZ has a relatively wide angle and is for detecting the start position of the code area CD.

The code area CD records information relating to film sensitivity and color / monochrome or negative / positive discrimination by a combination of bars and spaces.

Area CD2 of the code area CD
Records a code relating to the number of films by a combination of a total of three bars and spaces. For example, the narrow bar or space is set to 0, and the wide bar or space is set to 1 as shown in Table 1 below.

[Table 1]

As shown in Table 1, "0,0,0",
“1,1,0” and “1,1,1” are prohibition codes. "0,0,1", "0,1,0" and "0,1,"
1 ”is a definition code (first code), which is 12
It is defined as one sheet, 24 sheets and 36 sheets.

Further, "1,0,0" and "1,0,1"
Is an undefined code (second code) and is prepared for when a new standard for the number of films such as 50 sheets will be defined in the future. Since it is "1, 0, 1" in FIG.
2 shows the second undefined code in.

FIG. 4 is a view showing the structure of the film 12. The film 12 is divided into three areas, a leader section 12a, an exposure section 12b, and an end section 12c from the top (right end in FIG. 4). The leader portion 12a is a lead portion for pulling out the film 12 from the film cartridge 11, the exposure portion 12b is an area where a predetermined number of photographs are taken at a predetermined pitch, and the end portion 12c is an exposure portion 12b.
Film 12 to enable shooting of the final frame
Is an area for pulling out from the film cartridge 11 by a predetermined size or more.

A notch 51 is provided at an appropriate position on the left edge (upper side in FIG. 4) of the film 12 with respect to the drawing direction, and the left edge has a rectangular shape along the side edge. The perforations 52 and 53 are regularly drilled in pairs, and the perforations 52 and 5 are
A frame 54 for photographing is provided between the three.

The distance between the pair of perforations 52 and 53 is set to a dimension d1, and the distance between adjacent perforations 52 is set to a dimension d2. In the exposure unit 12b, the perforation 5
3 indicates the front end of the exposure area of each frame 54, and the perforation 52 indicates the rear end of the exposure area of the frame 54.

As shown in FIG. 4, the reader unit 12a
Also, no perforation is provided in the end portion 12c.

FIG. 5 is a schematic configuration diagram of the inside of the camera body in a plan view, and FIG. 6 is a perspective view schematically showing the positional relationship between the film 12 and the photo interrupter PI in the camera body.
7 is a partial lower perspective view of the camera body showing the loading chamber cover of the cartridge loading chamber, and FIG. 8 is a view showing the locking structure of the loading chamber cover.

As shown in FIG. 5, the camera body 81 includes a photographing lens section 82 having a photographing lens (not shown) arranged in the central portion, and a cartridge loading chamber arranged on the right side of the photographing lens section 82. 83 and this cartridge loading chamber 83
A motor 84 for film feeding arranged on the right side of the film, a film winding chamber 85 arranged on the left side of the taking lens section 82, and a battery for accommodating a battery 86 arranged in the lower right corner. The storage room 87 is provided.

The cartridge loading chamber 83 has an opening 61 (FIG. 7) formed by a loading chamber cover 62 (FIG. 7) described later.
Is configured to be closed, and the inside of the spool 41 is engaged with the opening / closing key 831 (FIG. 6) for opening and closing the light shielding door 17 and the groove 41a of the spool 41.
A drive key 832 (FIG. 6) for rotating the is provided.

Further, as shown in FIG. 5, the loaded film cartridge 1 is placed in the cartridge loading chamber 83.
A photo reflector PR is arranged on the upper end side of the first spool 41. The photo reflector PR is arranged so as to face the cutout portion 23 of the film cartridge 11, and reads the bar code on the data disk 42.

The film winding chamber 85 is disposed in parallel with the cylindrical winding spool 88 that is rotatably arranged, and the circumferential surface of the winding spool 88 so as to come into contact with the peripheral surface of the winding spool 88 at a required pressure. It is provided with a cylindrical film retainer 89.

The motor 84 is connected to the drive key 832 and the take-up spool 88 in the cartridge loading chamber 83 so as to be rotatable in the forward and reverse directions via a drive force transmission mechanism (not shown) including a gear.

Further, the camera body 81 has a photographing lens unit 8
2 is provided with a photo interrupter PI arranged at the rear. The photo interrupter PI is for detecting the perforations 52 and 53. As shown in FIG. 6, the photo interrupter PI faces the passage position of the perforation 52 of the film 12 and the frame 54 of the frame 54 when the film 12 is at the photographing position. Perforation 5 on the upstream side in the drawing direction
It is arranged at a position facing 2. Then, the feeding control of the film 12 is performed based on the detection of the perforations 52 and 53 by the photo interrupter PI.

The loading chamber cover 62, as shown in FIG.
The rotary shaft 63 has a shape capable of closing the opening 61 of the cartridge loading chamber 83, and both ends of the rotary shaft 63 are fitted in a pair of bearings 64, 64 arranged in the camera body 81. A coil spring (not shown) that biases the loading chamber cover 62 in the opening direction is hooked in the bearing portion 64 between the bearing portion 64 and the rotation shaft portion 63.

Further, the loading chamber cover 62 is provided with a U-shaped hook 65 which is erected at one corner on the inner surface side thereof.
A concave portion 66 into which the hook 65 is fitted is provided at a position facing the hook 65 on the lower surface of the camera body 81, and a locking portion 70 that can be engaged with and disengaged from the hook 65 is provided immediately inside the concave portion 66. Is provided.

As shown in FIG. 8, the locking portion 70 is composed of a locking lever 71 and an electromagnet 72. The locking lever 71 is L-shaped, is rotatably supported by a rotary shaft 73 penetrating the bent portion, and is biased by a biasing member 76 in the arrow A direction, that is, in the locking direction. On one end side of the rotation shaft 73 of the locking lever 71, a locking piece 74 is provided so as to project on the side facing the recess 66. The lower surface of the locking piece 74 is formed into a smooth inclined surface toward the tip.

A magnetic material piece 75 is fixed to the upper surface of the locking lever 71 on the other end side, and the electromagnet 72 is attached.
Are arranged at positions facing the magnetic piece 75. The locking lever 71 itself may be a magnetic body.

FIG. 9 is a block diagram showing the control system of the camera, FIG. 10 is a rear view of the camera body, and FIG. 11 is a right side view of the camera body. In FIG. 9, the photometric and distance measuring unit 91 is
It measures the subject brightness and subject distance.
4 is for exposing the film by using the measurement result of the photometric distance measuring section 91. The unlocking portion 92 is the electromagnet 72.
For supplying electric current to the locking lever 74.
By releasing the engagement between the loading chamber cover 62 and the hook 65, the loading chamber cover 62 is opened.

The perforation detecting section 93 is composed of a photo interrupter PI and detects the perforations 52 and 53 on the film 12. The film feeding unit 95 is composed of a motor 84, and feeds the film such as winding and rewinding the film. The data disc reading unit 96 is composed of a photo reflector PR and reads the bar code on the data disc 42 of the loaded film cartridge 11.

As shown in FIG. 10, the display unit 97 is arranged in the central portion on the back side of the camera body 81, is composed of an LCD, etc., and displays information about the number of films as will be described later. It also displays information relating to film sensitivity, color / monochrome or negative / positive discrimination, shutter speed, aperture and the like. Note that these displays may be alternately displayed at predetermined time intervals.

EEPROM 98 (Electrically Erasable
and Programmable ROM) includes a first memory unit M1, a second memory unit M2, a first undefined storage unit 98a, and a second undefined storage unit 98b.

This first memory unit M1 (second memory unit M
In 2), when the number-of-films information on the loaded film data disk 42 is the first undefined code (second undefined code), the number of shots of the film is stored after the shooting of the last frame is finished. Is.

In the first undefined storage section 98a (second undefined storage section 98b), the number information of the number of films on the data disk 42 of the loaded film is the first undefined code (second undefined code). Code), the number of shots of the film after the end of the shooting of the last frame is equal to the first memory unit M1.
When the number of shots is equal to the number of shots stored in the (second memory unit M2), the number of films is stored.

Incidentally, "00" is stored in each of the memory sections M1 and M2 and the storage sections 98a and 98b of the EEPROM 98 at the time of factory shipment. Then, the first undefined storage unit 98a (the second undefined storage unit 98a
When a numerical value other than “00” is stored in b), the first undefined code (second undefined code) is processed as defined by the number of sheets, as described later.

The control unit 99 has ROM 99a and RA
It is composed of a microcomputer or the like having a timer counting function provided with M99b, and controls the operation of the camera as shown in the flowcharts of FIGS. The ROM 99a stores the control program and the like, as well as the table data shown in Table 1 above. The RAM 99b temporarily stores data such as read film number information.

The control unit 99 also includes a main switch SMAIN, a release switch SREL, and an eject switch S.
The EJCT and the cover switch SCOV are connected, and the control unit 99 controls the operation of each unit based on the state of each switch.

As shown in FIG. 10, the main switch SMAIN is arranged at the center of the upper part on the back side of the camera body 81, and is for permitting and prohibiting the photographing operation.
As shown in FIG. 10, the release switch SREL is arranged at the right end of the upper surface of the camera body 81, and is used to perform a shooting operation.

The eject switch SEJCT shown in FIG.
As shown in FIG. 3, the loading chamber cover 62 is disposed below the right side surface of the camera body 81 and is used for taking out or loading the film cartridge 11. Also,
When the eject switch SEJCT is turned on while the film is being pulled out from the film cartridge 11 (during use of the film), the control unit 99 causes the display unit 97 to display the number of films as will be described later. .

The cover switch SCOV detects the open / closed state of the loading chamber cover 62, and is set to be turned on when the cover is opened and turned off when the cover is closed.

When the main switch SMAIN is off, the display portion 97 is turned off except for the information about the number of films and the cartridge mark 88 which will be described later, thereby suppressing the consumption of the battery.

Next, the operation of the camera having the above structure will be described. 7 and 8, when the film cartridge 11 is housed in the cartridge loading chamber 83 and the loading chamber cover 62 is closed, the tip of the hook 65 is locked by the locking piece 74.
Smoothly contacting the inclined surface of the
When the locking piece 74 engages with the hook 65, the locking piece 74 is locked in the closed state.

On the other hand, the eject switch SEJCT (Fig. 9)
When turned on, a current flows through the electromagnet 72 and the magnetic piece 7
By attracting 5, the locking lever 71 rotates counterclockwise in FIG. 8 to disengage the locking piece 74 from the hook 65, and the loading chamber cover 62 is moved by the above-mentioned urging force in the opening direction. It will open.

When the film cartridge 11 is housed in the cartridge loading chamber 83, the light-shielding door 17 is automatically opened by inserting the open / close key 831 provided therein into the key holes 22 and 32.

Further, when the film cartridge 11 is housed in the cartridge loading chamber 83, the drive key 832 provided inside is engaged with the groove portion 41a of the spool 41. As described above, since the display disc 43 is fixed to the spool 41, the positional relationship between the narrow-angle fan-shaped portion 43b and the groove portion 41a does not change. Therefore, the rotational angle position of the drive key 832 when the drive key 832 is engaged with the groove 41a of the spool 41 is detected by the phase detection using a rotary encoder or the like that rotates integrally with the drive key 832, and thus the display disk 43 is narrowed. The position of the rectangular sector 43b, that is, the state of the film 12 is detected.

Then, in FIG. 1, the spool 41 is set to Y
When it is rotated in the X direction, the film 12 is sent out from the film drawing port 16 of the film cartridge 11, and when it is rotated in the X direction, the film 12 is discharged.
It is rewound inside. Further, when the spool 41 is rotated in the X direction, the barcode of the data disk 42, that is, the information on the film 12 is read by the photo reflector PR in the cartridge loading chamber 83.

The data disk 42 and the narrow-angle fan-shaped portion 4
Since the positional relationship with 3b is fixed, when the bar code of the data disk 42 is read by the photo reflector PR, the black area B from the reading start position on the data disk 42 when the film cartridge 11 is loaded.
The position of the narrow-angle fan-shaped portion 43b, that is, the state of the film 12 can also be detected by detecting the angle formed by the end of Z.

Next, the display unit 9 will be described with reference to FIGS.
The film number information displayed in 7 will be described. Figure 1
2 is a diagram showing the film number information displayed on the display unit 97 when the film number code on the data disc 42 is defined, and FIG. 13 is a display unit 97 when the film number code is an undefined code. FIG. 14 is a diagram showing the number-of-films information displayed in FIG. 14, and FIG. 14 is a diagram showing the number-of-films information displayed on the display unit 97 when the number-of-films code is a prohibition code. Display 97, (b) shows the eject switch during film use
The display part 97 when SEJCT is turned on is shown.

The cartridge mark 88 shown in FIGS. 12 to 14 is displayed when the film cartridge 11 is loaded in the cartridge loading chamber 83.

When the film number code read from the data disc 42 is defined, in the normal state, the remaining number of films is displayed as shown in FIG. 12 (a). FIG. 12A shows that the next 24 images can be taken.

When the eject switch SEJCT is turned on during film loading, the number of films corresponding to the film number code read from the data disc 42 is displayed as shown in FIG. 12 (b). 12
(B) shows that a film of 36 shots is loaded.

On the other hand, when the film number code read from the data disc 42 is an undefined code or a prohibited code, as shown in FIGS. 13A and 14A, the current frame number (next The frame to be photographed) is displayed and the "+" mark is displayed. The remaining number and the current frame number are displayed in a distinguishable manner depending on whether or not the "+" mark is displayed. 13A and 14A show that the 24th frame is to be photographed next.

Even when the eject switch SEJCT is turned on, it is not possible to determine how many films have been taken. Therefore, when the code is undefined, a part of the 7 segments forming the numbers is used as shown in FIG. 13 (b). A mark such as "---" is displayed, and when it is a prohibition code, nothing is displayed and it is left blank as shown in FIG.

Instead of displaying the "+" mark,
The remaining number may be identified by blinking the displayed number. In this case, it is not necessary to display the "+" mark, so that the number of display segments on the LCD can be reduced.

When the numbers themselves are used instead of the segment display such as the "---" mark, "0" is displayed.
If it is an impossible number such as “0” or “0”, it will not be mistakenly recognized, and the display control for displaying a part of the segment does not have to be performed.

Next, the operation procedure of this camera will be described with reference to the flow charts of FIGS. First,
The flags used in the flowchart will be described.

The flag FFLM is a flag for determining whether or not the film is in use, that is, whether or not the film has been pulled out of the film cartridge and is ready to be photographed. Reset on completion. The flag FM1 indicates that the film number code on the data disk 42 is "100", that is, the first undefined code, and the corresponding number of films is not stored in the first undefined storage section 98a of the EEPROM 98. This is a flag that is sometimes set. The flag FM2 indicates that the film number code on the data disk 42 is "101", that is, the second undefined code, and the corresponding film number is the EE.
This flag is set when it is not stored in the second undefined storage section 98b of the PROM 98. The flag FK indicates that the film number code on the data disc 42 is "00".
This is a flag that is set when any of 0, 110, or 111, that is, a prohibition code.

FIG. 15 is a flow chart showing the procedure of the main routine. When a battery is loaded into the battery storage chamber of the camera body, the operation is started, and after performing predetermined initial processing such as resetting the RAM 99b and setting initial values,
First, it is determined whether the eject switch SEJCT is on or off (# 100), and if it is on (YES in # 100),
Go to the SEJCTON subroutine described later (# 105),
Return to # 100.

On the other hand, if the eject switch SEJCT is off (NO in # 100), then the cover switch SC
It is determined whether the OV is switched from off to on, that is, the loading chamber cover 62 is closed (#
110), if closed (YES in # 110), proceed to an initial load subroutine described later (# 11
5) Return to # 100.

On the other hand, if the cover switch SCOV is not switched from OFF to ON (NO in # 110), it is determined whether the main switch SMAIN is ON or OFF (# 120), and if it is OFF (NO in # 120). , The display 97 is turned off (# 125) and returns to # 100, while if it is on (YES in # 120), the release switch SREL is turned on,
It is determined to be off (# 130), and if it is off (# 130).
NO), and returns to # 100.

On the other hand, if the release switch SREL is on (YES in # 130), photometry and distance measurement are performed (# 14).
0), and then the film is exposed (# 15
0). When the exposure is completed, the process proceeds to the one-frame feeding subroutine described later (# 160) and returns to # 100.

As described above, when the main switch SMAIN is off, the photographing operation is prohibited, but the eject switch SE
Since the signals from the JCT and the cover switch SCOV are received, it is possible to load the film and display the number of films as will be described later even when the main switch SMAIN is off.

FIG. 16 shows the SEJCTON of # 105 in FIG. 15 above.
It is a flow chart which shows the operating procedure of a subroutine.
First, it is determined by the flag FFLM whether or not the film has been pulled out (# 200). If the film has not been pulled out (NO in # 200), the loading chamber cover 62 is opened by turning on the electromagnet 72 (# 210) and ends.

On the other hand, if the film is pulled out in # 200 (YES in # 200), the main switch
Whether the SMAIN is on or off is determined (# 220), and if it is on (YES in # 220), it is determined whether the film number code on the loaded data disk 42 is an undefined code (# 222). ), If it is an undefined code (YES in # 222), a "-" mark is displayed on the display unit 97 as shown in FIG. 13B (# 22).
8) and proceed to # 230.

At # 222, if the film number code on the data disk 42 is not an undefined code (# 2
(NO in 22), it is determined whether or not the film number code on the data disk 42 is a prohibition code (# 22).
4) If the code is a prohibition code (YES in # 224), as shown in FIG. 14 (b), the number of sheets is not displayed on the display unit 97 and is blank (# 229), and the process proceeds to # 230.

In # 224, if the film number code on the data disk 42 is not a prohibition code (# 22
4 is NO), and as shown in FIG.
The number of possible film shots is displayed in 7 (# 22
6).

Next, it is judged whether the eject switch SEJCT is on or off (# 230), and when it is on, it stands by (YES in # 230) and when it is off (N in # 230).
O), normal display is performed (# 232). That is,
If the film has a definition code, the remaining number will be displayed. If the film has a code other than that, "+" will be displayed.
The mark and the current frame number are displayed.

On the other hand, in # 220, the main switch
If SMAIN is off (NO in # 220), it is determined whether or not the film number code on the loaded film data disk 42 is an undefined code (# 240), and if it is an undefined code (# 240). If it is not an undefined code (NO in # 240), it is judged whether or not the film number code on the data disk 42 is a prohibited code (# 242). If (YES in # 242), the frame number is displayed on the display unit 97 (# 246) as shown in FIG.
Proceed to 48.

In # 242, the film number code on the data disk 42 is not the prohibit code (# 24
2 is NO), and as shown in FIG. 12A, the remaining number is displayed (# 244).

Next, it is determined whether the eject switch SEJCT is on or off (# 248). When it is on, the process stands by (YES in # 248) and when it is off (N in # 248).
O), end.

Thus, when the eject switch SEJCT is turned on, the loading chamber cover 62 is opened when the film is not pulled out from the film cartridge, while the film is pulled out from the film cartridge when the film is pulled out. Since the number of films is displayed on the display unit 97, the eject switch SEJCT can be used both as an operating member for instructing the opening of the loading chamber cover and an operating member for instructing the display of the number of films.

In the display of the number of films, if the main switch SMAIN is on, the number of films in the loaded film cartridge is displayed, and if it is off, the remaining number or the current frame number is displayed. You can check.

FIG. 17 is a flowchart showing the operation procedure of the initial load subroutine of # 115 of FIG. 15 above. First, the film feeding is started in the rewinding direction (# 300), and the bar code on the data disc 42 is read. It is read (# 310). Then, it is judged whether or not the film cartridge is loaded by the presence or absence of the barcode detection (# 320). If the film cartridge is not loaded (NO in # 320), the feeding operation is stopped (# 330). ),finish.

On the other hand, if the film cartridge is loaded (YES in # 320), it is determined whether or not the film number code read in # 310 is a definition code (# 340).

Here, even if the read code is an undefined code of "100" or "101" shown in Table 1 above, if the code is registered, that is, EEPR
If the data in the first undefined storage unit 98a or the second undefined storage unit 98b of the OM 98 is not "00", it is determined that the film number code is the definition code.

If it is the definition code (YES in # 340), the flags FK, FM1 and FM2 are reset (#
350) and then to # 490.

On the other hand, in # 340, if the read film number code is not the definition code (NO in # 340), the film number code of the data disk 42 is 2
It is determined whether or not the data has been read once (# 360), and if it is still once (NO in # 360), the process returns to # 310 and the above operation is repeated to avoid misjudgment.

When the code reading on the data disk 42 is performed twice (YES in # 360), it is determined whether or not the read film number code is the first undefined code (# 370). If it is the first undefined code (YES in # 370), the flag FM1 is set (#
450), the flag FM2 is reset (# 460), the flag FK is reset (# 470), and the process proceeds to # 490.

On the other hand, in # 370, the read film number code is not the first undefined code (#
(NO in 370), it is determined whether it is the second undefined code (# 380), and if it is the second undefined code (# 380).
YES at 380), flag FM2 is set (# 42
0), the flag FM1 is reset (# 430), and the flag
The FK is reset (# 440) and the process proceeds to # 490.

On the other hand, at # 380, the read film number code is not the second undefined code (#
No in 380), and since it is a prohibition code, the flag FK is set (# 390) and the flag FM1 is reset (#
400) and the flag FM2 is reset (# 410).

Then, the feeding of the film is started in the winding direction (# 490), it is judged whether or not the first frame is fed to the photographable position (# 500), and the film is fed to the photographable position. When it is continued (NO in # 500) and the first frame is fed to the image capturing position (YES in # 500), the winding operation is stopped (# 550), and the flag FFLM is set (# 560).

Next, it is judged whether or not the film number code of the loaded film cartridge is a prohibition code (#
570), and then it is judged whether or not the code is an undefined code (# 580), and if neither is found (# 580).
(NO in 570 and # 580), the remaining number of films, that is, the number read from the data disk 42 here is displayed on the display unit 97 (# 590), and the process ends.

On the other hand, if the film number code of the loaded film cartridge is either the prohibition code or the undefined code (YES in # 570 or # 580), the display unit 9
"1" is displayed in 7 (# 600), and the process ends.

As described above, when the loading chamber cover 62 is closed (# 110 in FIG. 15), the initial loading process is performed and the film number code on the data disc 42 is first read. At this time, if the read film number code is not the definition code, the reading operation is performed again. Therefore, the definition code is changed to the undefined code due to factors such as adhesion of foreign matter on the data disk 42 and external noise. Alternatively, it is possible to prevent erroneous determination as a prohibited code.

In the present embodiment, the reading operation is performed twice, but the reading operation is not limited to this, and may be performed three times or more.

FIG. 18 is a flowchart showing the operation procedure of the 1-frame feeding subroutine of # 160 of FIG. 15 above. First, it is judged whether or not the film number code of the loaded film is an undefined code (# 700). Then, it is determined whether or not the code is a prohibited code (# 71
0), if neither (N in # 700 and # 710)
O), it is determined whether or not the current piece is the last piece (#
720).

If it is the last frame (YE in # 720)
S), and proceed to the rewinding subroutine described later (# 84
0), it is finished and it is not the final frame (NO in # 720),
The winding operation is started (# 730) and continues until the perforation is detected twice (NO in # 740),
When perforation is detected twice (Y in # 740
ES), the winding operation is stopped (# 750), the display value of the display unit 97 is decremented by 1 (# 760), and the process ends.

On the other hand, if the film number code of the loaded film is either the prohibited code or the undefined code (#
If YES at 700 or # 710), the timer count is started (# 770), and the winding operation is started (# 780).

Next, it is judged whether or not perforation is detected (# 790), and if not detected (# 790).
(NO at 790), and then, for a predetermined time from the start of winding,
For example, it is determined whether or not 0.5 seconds has elapsed (# 800), and if it is not over (NO in # 800), # 790
When the time is over (# 80
If YES, proceed to the rewinding subroutine (# 84
0), the process ends.

When the perforation is detected in # 790 (YES in # 790), it is determined whether or not the perforation is detected again (# 81).
0), continues until detected (NO in # 810), and when perforation is detected (YES in # 810),
The winding operation is stopped (# 820), the display value of the display unit 97 is incremented by 1 (# 830), and the process ends.

As described above, when the film number code of the loaded film cartridge is the undefined code or the prohibited code, if the perforation is not detected by the elapse of a predetermined time after the start of winding, the end without the perforation is provided. The portion 12c, that is, the last frame is determined to be finished. Further, since the number of films is unknown, a forward counting counter for displaying the current number of frames on the display unit 97 is realized. By these, even if the film number code is an undefined code or a prohibited code, it can be used for shooting.

When the number-of-films code is the definition code, the remaining number of films is displayed on the display unit 97, so that the number of remaining films can always be confirmed and a camera with good operability is realized. be able to.

19 and 20 are flowcharts showing the operation procedure of the rewinding subroutine of # 840 in FIG. First, when the rewind operation is started (#
900), it is determined whether or not the film number code of the loaded film is an undefined code (# 910), and subsequently it is determined whether or not the code is a prohibited code (# 9).
20), if neither (NO in # 910 and # 920), the number of films is displayed on the display unit 97 (# 93).
0), and proceed to # 940.

On the other hand, if the film number code of the loaded film is either the prohibition code or the undefined code ((#
If YES in step 910 or # 920), since the number of shots is already displayed on the display unit 97, the process directly proceeds to step # 940.

Next, every time the perforation is detected twice (YES in # 940), the numerical value of the display section 97 is set to 1
Then, it is determined whether or not the film has been rewound to the 0th frame (# 960), and while the film is not rewound to the 0th frame (NO in # 960), # 94
0 to # 960 are repeated.

When it is rewound to the 0th frame (# 9
If the film is no longer detected by the photo interrupter PI, that is, if the leading edge of the film has passed (# 970), and if the leading edge of the film has passed (YES in # 970), the film reader For a certain time to rewind the part, for example, 3
Standby for a second (continue rewinding) (# 980).

Next, it is judged whether or not the film number code of the loaded film is an undefined code (# 990). If it is not an undefined code (NO in # 990), the process proceeds to # 1080, and if it is an undefined code. (YES in # 990), the film is fed in the rewinding direction, and the barcode on the data disk 42 is read (# 1000).

Then, the film number code read at # 1000 and the initial load subroutine (see FIG.
It is determined whether or not the film number code read in # 310 of 7) matches (# 1010). If they do not match (NO in # 1010), the process proceeds to # 1080, and if they match. (YES in # 1010), it is determined whether or not it is the first undefined code (# 1020).

Here, if it is not the first undefined code (NO in # 1020), it is the second undefined code. Therefore, the number of images taken this time by the loaded film and the second memory section M2 are stored. It is determined whether or not the previous number of shots by the film having the same undefined code is equal (# 1030), and if they are equal (YES in # 1030),
Proceed to # 1060, and if not equal (N in # 1030
O), the number of images that can be captured this time by the loaded film is stored in the second memory unit M2 (# 1040), and the process proceeds to # 1080.

On the other hand, in # 1020, if it is the first undefined code (YES in # 1020), the number of images taken this time by the loaded film and the film of the same undefined code stored in the first memory section M1. If it is equal (YES in # 1050), the number of shots taken this time by the loaded film is determined as the number of undefined code films on the data disc 42. , Which is stored in the first undefined storage unit 98a or the second undefined storage unit 98b of the EEPROM 98 corresponding to the undefined code (# 106).
0), and proceeds to # 1080. As a result, this undefined code is processed as a defined code thereafter.

On the other hand, if the number of images taken this time by the loaded film is not equal to the previous number of images taken by the film of the same undefined code stored in the first memory unit M1 (NO in # 1050), The number of images captured this time is stored in the first memory unit M1 (# 107
0).

Next, the rewinding operation is stopped at the position where the display disk 43 of the film cartridge 11 indicates that the exposure has been completed (# 1080), the flag FFLM is reset (# 1100), and the display value on the display unit 97 is set to 0. At the same time, by blinking the cartridge mark 88, the completion of rewinding is displayed (# 1110).

Subsequently, it is determined whether the eject switch SEJCT is on or off (# 1120), and the process waits until it is turned on (NO at # 1120).
When T is turned on (YES in # 1120), electromagnet 7
2 is supplied with current and the loading chamber cover 62 is opened (#
1130) and ends.

As described above, when the film number code of the film cartridge is the undefined code or the prohibition code, the number of shot images at the end of rewinding is compared with the number of passing films at the time of rewinding. Compared with the number of shots when the film of the same undefined code of was loaded,
If they are equal, associate the number of shots with an undefined code and E
Since it is stored in the EPROM 98, the undefined code can be processed as a definition code thereafter.
As a result, even with a film having an undefined code, the remaining number of films can be displayed on the display unit 97 and the operability can be improved.

Further, when the number of photographed film cartridges of the same undefined code is the same, the EEPROM is
Since it is stored in 98 and processed as the definition code, the number of films of the undefined code can be surely discriminated.

When the film number code of the data disc 42 is a prohibition code, the initial loading process may be prohibited so that the photographing operation cannot be performed.

Further, although the number of films is registered by the undefined code, the last frame may be detected by the timer count like the original film of the undefined code. As a result, it is possible to reduce the trouble that occurs when an incorrect number of films is registered.

Further, the first shot number of the film cartridge of the undefined code is stored in the EEPROM 98 without determining whether the shot sheets of the film cartridge of the same undefined code are consecutively equal or not, and thereafter, the definition is made. It may be processed as a code.

Further, the film cartridge 11 may be one in which the notch 23 is formed in an annular shape over the entire circumference. In this case, the barcode on the data disk 42 can also be read by rotationally moving the photo reflector PR along the circumferential direction. In that case, a large number of photo reflectors PR may be arranged in a ring shape. Thereby, the barcode on the data disc 42 can be read without rotating the data disc 42 or the photo reflector PR.

[0118]

As described above, according to the invention of claim 1, when the operation member is operated while the film is being pulled out from the film cartridge loaded in the cartridge loading chamber, the lid is opened. Since the display means displays the information on the number of possible shots in the number storage means, the operation member is used to instruct the opening of the lid and the film.
Can also be used as a display instruction of the information about the number of possible shots . Therefore, it is possible to prevent an increase in the number of parts, which allows the camera to be downsized.

According to the second aspect of the present invention, the remaining number of shootable images is counted for each shooting, and when the shooting operation is prohibited, the counted number of remaining shootable images is displayed. Even when the camera is not in use, the number of remaining shots can be known, which improves operability.

[Brief description of drawings]

FIG. 1 is a perspective view of a film cartridge used in the present camera.

FIG. 2 is a perspective view showing a state in which the film cartridge is turned upside down.

FIG. 3 is a plan view showing a radial barcode recorded on a data disc.

FIG. 4 is a diagram showing a structure of a film.

FIG. 5 is a schematic configuration diagram of the inside of the camera body in a plan view.

FIG. 6 is a perspective view schematically showing a positional relationship between a film and a photo interrupter in the camera body.

FIG. 7 is a partial lower perspective view of the camera body showing a loading chamber cover of the cartridge loading chamber.

FIG. 8 is a view showing a locking structure of a loading chamber cover.

FIG. 9 is a block diagram showing a control system of the present camera.

FIG. 10 is a rear view of the camera body.

FIG. 11 is a right side view of the camera body.

12 (a) and 12 (b) are views showing a display unit when a film number code on a data disc is defined.

13A and 13B are diagrams showing the display unit when the film number code is an undefined code.

14 (a) and 14 (b) are views showing the display section when the film number code is a prohibition code.

FIG. 15 is a flowchart showing a procedure of a main routine.

16 is a flowchart showing an operation procedure of a SEJCTON subroutine of # 105 of FIG.

FIG. 17 is a flowchart showing an operation procedure of a # 115 initial load subroutine shown in FIG. 15;

FIG. 18 is a flowchart showing an operation procedure of a one-frame feeding subroutine of # 160 in FIG.

FIG. 19 is a flowchart showing an operation procedure of a rewinding subroutine of # 840 in FIG.

20 is a flowchart showing an operation procedure of a rewinding subroutine of # 840 in FIG.

[Explanation of symbols]

11 film cartridge 12 film 42 data disc 43 display disc 61 opening 62 loading chamber cover (lid) 81 camera body 83 cartridge loading chamber 96 data disc reading unit (sheet number reading unit) 97 display unit (display unit) 99 control unit ( Detecting means, control means, counting means, display controlling means) 99b RAM (sheet number storing means, remaining sheet number storing means) PR photo reflector (sheet number reading means) SEJCT eject switch (operating member) SMAIN main switch (prohibiting means)

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-1-191836 (JP, A) JP-A-5-281601 (JP, A) JP-A-7-13251 (JP, A) JP-A-1- 205139 (JP, A) JP-A-7-319024 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G03B 17 / 00,17 / 18,17 / 36

Claims (2)

(57) [Claims] 1. A cartridge loading chamber provided with an opening inside a camera main body for loading a film cartridge having information on the number of storable films of a film that can be pulled out through the opening, and the opening. a lid openably closed, and an operating member for instructing opening of the lid, the camera for sequential drawer shoot the film from the film cartridge loaded in the cartridge chamber, the number of recordable images a number reading means for reading information, a number storage means for storing the number of photographable images information read, and display means, a detection means for detecting that the film is pulled out from the loaded film cartridge, is said loading The operation member is operated while the film is being pulled out from the film cartridge. When a camera, characterized in that the number of photographable images information in the number storage means while prohibiting the opening of the lid and control means for displaying on the display means. 2. The camera according to claim 1, wherein a prohibiting means for prohibiting a photographing operation, a counting means for counting the number of remaining photographable images for each photographing, and the counted remaining portion.
When the shooting operation is prohibited, the remaining number storage means for storing the number of remaining shots is displayed on the display means.
A camera provided with a display control means for displaying the number of possible sheets.