JP3105759B2 - 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 , and more particularly to a display device for displaying various kinds of film information.

[0002]

2. Description of the Related Art Conventionally, as described in Japanese Patent Application Laid-Open No. 2-191927, it is known to display the sensitivity of a film on a display device for displaying various information of a camera, for example, a liquid crystal or the like.

[0003] Further, the type, sensitivity, and number of shootable pictures (how many pictures are taken) can be confirmed by looking directly at the sign or the like written on the film cartridge through a film check window provided on the back cover of the camera. It was possible.

Further, it is known that a camera reads a DX code written on a film cartridge and automatically sets the film sensitivity, or displays a film sensitivity or the like on a display device during auto loading.

[0005]

However, in a camera of the film drop-in loading type which does not open and close the back lid, since the entrance of the loaded film cartridge is opened, it is necessary to provide a film confirmation window in the camera body. No, the type of film already loaded in the camera cannot be confirmed.

Further, when the above-mentioned film confirmation window is not provided, it is not possible to determine how many more pictures can be taken even if the number of taken pictures is displayed on a display device for displaying various information of the camera.

[0007]

[0008] engagement Ru inventions of purpose in this application, was charged Fi
It is an object of the present invention to provide a camera capable of displaying various information of a room .

[0009]

Means and Action for Solving the Problems First Invention
Is a camera that can be loaded with a film cartridge having a recording section on which film information is recorded, rotating integrally with a supply spool in the film cartridge, and the recording section being rotated with the rotation of the supply spool. Film information detecting means for detecting film information more, display means for displaying various information of the camera, a mode in which the sensitivity of the film can be changed by manual operation, and film information read by the film information detecting means by half pressing. A release button for reading out, wherein the display means displays a first display state for displaying normal camera information and a sensitivity of a loaded film when a film sensitivity change mode is set.
Changes when the film speed is changed.
A second display state for displaying the released sensitivity, and a half-press operation of the release button when the film sensitivity change mode is set.
The camera has a third display state for displaying the sensitivity of the loaded film and the type of the film .

According to this configuration, various information of the camera is displayed.
The display means shown indicates the film loaded in the camera.
When changing the fill sensitivity manually, the
The original film speed is displayed and the speed
Change, and release the
When the button is pressed halfway , the loaded film sensitivity and
And the type of film can be displayed .

[0011] A second invention is the above-mentioned first invention, wherein:
In the third display state, the display means further controls the film.
The number of frames is displayed.

[0012] The specified number of frames of the film can be confirmed .

A third aspect of the present invention is any one of the above-mentioned inventions, wherein
Serial display means, said second display state, you characterized by flashing display when the sensitivity of the film is changed manually.

According to this configuration, it is possible to reliably know that the film sensitivity has been changed.

A fourth aspect of the present invention is any one of the above inventions, wherein
Serial display means, said third display state, among the film information of various information of the camera, you said be displayed by the segment of the aperture value display unit.

According to this configuration, it is possible to accurately display the film information at the time of setting the film sensitivity change mode on the aperture value display unit without providing a separate film information display unit.

According to a fifth aspect of the present invention, the first, second or third aspect is provided.
In the invention, the display means, the third display state, among the film information of various information of the camera, you wherein the displaying by the exposure step display.

According to this configuration, it is possible to accurately display the film information at the time of setting the film sensitivity change mode on the exposure step difference display unit without providing a separate film information display unit.

[0019]

【Example】

(First Embodiment) A first embodiment of the present invention will be described below with reference to FIGS. In FIG. 1, 1 is a camera body, 1a is a film cartridge chamber, 1
b is a finder eyepiece. Reference numeral 2 denotes a film cartridge in which the entire film including the leading end is loaded and loaded into the film cartridge chamber 1a of the camera body 1 after the film is sent out from the entrance by a camera driving system (not shown).

Reference numeral 3 denotes a cover of the film cartridge chamber 1a of the camera body 1, 3a abuts against an end of a spool 2b of the film cartridge 2, and a projection for supporting one side of the film cartridge 2;
The locking portion 4 of the lid 3 is a locking portion 3b of the lid 3 as shown in FIG.
A lock claw having a projection 4a meshing with a fork gear 5 meshing with a film drive system (not shown), and a film driving force transmitting member 5a engaging with a key groove for transmitting driving force formed on the spool 2b. A certain fork claw 6 is an optical sensor for reading a bar code pattern indicating the type of film formed integrally with the spool 2b of the film cartridge 2 shown in FIG. 2, and 7 is a display device for displaying various information of the camera. is there.

Reference numeral 8 denotes various photographing modes also functioning as a power switch, a mode dial having an ISO change position, 9 an electronic dial used to change various settings, 10 a release button, 11 a photographing lens barrel, and 12 an AF. Mode switching button, 13 is feed speed switching button, 1
Reference numeral 4 denotes an exposure correction button.

FIG. 2 is a detailed view of the film cartridge 2. Reference numeral 2a denotes an openable light-shielding door of the film cartridge 2, 2b denotes a spool of the film cartridge 2, 2c denotes a disk that rotates integrally with the spool 2b, and information about the film (film sensitivity, the number of specified frames, There is a barcode pattern in which the film type is encoded. Reference numeral 2d denotes a drive hole into which a driver pin (not shown) for driving the openable light-shielding door 2a is inserted.

FIG. 3 is a sectional view showing a state in which the film cartridge 2 is loaded in the camera body 1. The spool 2 b of the film cartridge 2 abuts on the fork gear 5, and the notch of the spool 2 b is fitted with the fork claw 5 a of the fork gear 5. Further, an optical sensor 6 for reading a barcode pattern 2c that rotates integrally with the spool 2b is provided.

FIG. 4 is an electric circuit block diagram of a camera showing a first embodiment of the present invention. In the figure, 100 is a control device for controlling the camera, 101 is a relays button 1
A half-press switch for detecting a half-press of 0, a release switch 102 for detecting a full-press of the release button 10, 9
Is an electronic dial for changing various setting items, 103
Is a photometric device for photometry of the object scene, 7 is a display device for displaying various information of the camera, 16 is a rangefinder lens drive device for performing distance measurement, lens, drive and autofocus, 17 is a memory for storing data, 6 Is an optical sensor for reading the bar code pattern 2c of the film cartridge 2, 104 is an exposure control device for controlling a shutter and an aperture, 105 is a film drive device for feeding, winding and rewinding the film, and 8 is a camera photographing mode. Mode dial, 12 is an AF mode switch button switch, 13 is a film feed mode switch button switch, 14 is an exposure compensation button switch, and 15 is a lock claw 4 for opening and closing the lid 3 of the film cartridge chamber 1a in FIG. The switch is turned on and off in conjunction with the movement of the sliding projection 4a.
This is a lid switch of the film cartridge chamber 1a to be operated.

FIG. 5 is a plan view showing the entire display of the display device 7. In the figure, reference numeral 20 denotes the mode dial 8
An ISO index displayed when the camera is set to the O change position, a shutter speed display section 21 for displaying a shutter speed during normal shooting, and a shutter speed display section for setting the mode dial 8 to the ISO change position.
It also serves as a display unit for displaying ISO information together with the ISO index.

Reference numeral 22 denotes an aperture value display section for displaying an aperture value. Reference numeral 23 denotes a film feed mode display unit for displaying continuous shooting and single shooting of film feeding, 24 denotes an AF mode display unit, 25 denotes a film frame number display unit, and 26 denotes an exposure step display unit.

FIG. 6 shows the display unit in the normal photographing state. The shutter speed display section 21 indicates a shutter speed of 1/250 second, and the aperture value display section 22 indicates an aperture 56. The film feed mode display section 23 is in the single shooting mode, and the AF mode display section 24 is in the ONE SHOT mode.
The mode (focus priority) is selected and set, respectively. The film frame number display section 25 indicates that the first frame of the film is currently set. The exposure step display section 26 indicates that the camera is currently in the standard exposure state (no exposure correction).

Next, the operation and display of the camera when the mode dial 8 is set to the ISO change position will be described with reference to FIGS. FIG. 7 shows the display device 7 when the mode dial 8 is set to the ISO setting position.
Shows the display state of. At this time, the ISO index 20
Then, the sensitivity of the loaded film is displayed on the shutter speed display section 21. When the setting is changed by turning the electronic dial 9 from the set ISO sensitivity of 100 to 400, 400 is displayed on the shutter speed display section 21 as shown in FIG.

In this case, the manually set 400 may blink. Further, the exposure step display section 26 lights a dot having a step difference from the original film sensitivity to a film sensitivity manually changed from the original film sensitivity. If the change is made beyond the displayable range of the exposure step display section 26, the dot at the end of the exposure step display section 26 blinks to indicate that it is outside the displayable range. At this time, when the user wants to confirm the original film information, the display is switched from FIG. 9 to FIG. 12 by pressing the release button 10 halfway. FIG. 9 shows a state in which a color reversal, ISO 100, and 40 shot film are loaded.

Reference numeral 20 denotes an ISO index indicating that the mode dial 8 has an ISO change position, a shutter speed display section 21 displays an ISO sensitivity 100 read from a data disk, and an aperture value display section 22 is a color reversal film. (CS) (color slide) is displayed. The film frame number display section 25 displays the prescribed number of photographed frames 40 of the film.

FIG. 10 shows a color negative, ISO10
This shows a state where 0, 40 frames of film are loaded.
Reference numeral 20 denotes an ISO index indicating that the mode dial 8 is at the ISO change position, and a shutter speed display unit 21
Displays the ISO sensitivity 100 read from the data disk, and the aperture value display section 22 displays CP (for color print) indicating that the film is a color negative film. The film frame number display section 25 displays the specified number of photographed frames of the film.
Displays 0.

In FIG. 11, a black-and-white negative, ISO10
I indicating that 0, 40 shot film is loaded
The SO index and shutter speed display section 21 displays the ISO sensitivity 100 read from the data disk, and the aperture value display section 22 displays bL (for black) indicating that the film is a monochrome film. The film frame number display section 25 displays the prescribed number of photographed frames 40 of the film.

FIG. 12 shows a state in which another special film (such as an infrared film) is loaded with a forty-shooting film. 20 is the mode dial 8 is IS
The ISO index indicating the O change position, the shutter speed display unit 21 displays the numerical value if the sensitivity is defined in the data disk 22c, and 100 otherwise.
Is displayed, and the aperture value display section 22 displays “−−” indicating that the film is a special film. The film frame number display section 25 displays the prescribed number of photographed frames 40 of the film.

(Second Embodiment) FIGS. 13 to 16 show a second embodiment of the present invention. When the mode dial of the camera body 1 is set to the ISO change position, the state of FIG. 7 is displayed on the display device 7 as in the first embodiment. When the setting is changed by turning the electronic dial 9 from the set ISO sensitivity of 100 to 400, 400 is displayed on the shutter speed display section 21 as shown in FIG. In this case, the manually set 400 may blink. Further, in the exposure step display section 26, a dot corresponding to a step difference between the original film sensitivity and the film sensitivity manually changed is turned on. If the change is made beyond the displayable range of the exposure step display section 26, the dot at the end of the exposure step display section 26 blinks to indicate that the display is outside the displayable range. At this time, when the user wants to confirm the original film information, the release button 10 is half-pressed, and FIG.
The display changes to 6.

FIG. 13 shows color reversal, IS
O100, a state in which a 40-frame film is loaded. Reference numeral 20 denotes an ISO index indicating that the mode dial 8 is at the ISO change position, and a shutter speed display unit 21 displays the ISO sensitivity 10 read from the data disk.
0 is displayed, and the film frame number display section 25 displays the specified number of photographed frames 40 of the film. Then, the exposure step display section 26
Indicates that the film is a color reversal film including the determination of the film type and the meaning of the color reversal latitude, with the -1 and +1 dot portions turned on.

In FIG. 14, a color negative, ISO1
This shows a state in which 00 and 40 frames of film are loaded. Reference numeral 20 denotes an ISO index indicating that the mode dial 8 is at the ISO change position, and a shutter speed display unit 21 indicates the ISO sensitivity 1 read from the data disk.
00 is displayed, and the film frame number display section 25 displays the specified film frame number 40. And the exposure step display section 2
Reference numeral 6 turns on the dot portions of -1.5 and +1.5 (in order to determine the type of film) to indicate that the film is a color negative film.

In FIG. 15, a monochrome negative, ISO1
This shows a state in which 00 and 40 frames of film are loaded. Reference numeral 20 denotes an ISO index indicating that the mode dial 8 is at the ISO change position, and a shutter speed display unit 21 indicates the ISO sensitivity 1 read from the data disk.
00 is displayed, and the film frame number display section 25 displays 40, which is the prescribed number of film frames. The exposure step display section 26 lights the dot portions of -2 and +2 to indicate that it is a monochrome film.

FIG. 16 shows a state in which a forty-shooting film is loaded as another special film (such as an infrared film). 20 is the mode dial 8 is ISO
The ISO index indicating the change position, the shutter speed display section 21 displays the numerical value if the sensitivity is specified in the data disc 2c, and 100 otherwise, and the film frame number display section 25 displays the film number. The specified number of photographed frames 40 is displayed. Exposure level difference display part 26 is -2, +2
Blinks the dot section to indicate that it is a special film.

Next, the actual operation will be described with reference to the flowchart of FIG.

# 201 It is determined whether or not the lid 3 of the film cartridge chamber 1a is closed by the state of the lid switch 15. If it is determined that the lid 3 is closed, the process proceeds to # 202.

# 202 It is determined whether or not the mode dial 8 is in the photographing mode. When the mode dial 8 is in the photographing mode, the flow proceeds to # 203.

In step # 203, driving of the film by the film driving device 105 is started.

In step # 204, a barcode signal is input by the optical sensor 6, and barcode information is set in the camera.

# 205 The film drive 105 determines whether or not the first frame has been set based on the perforation of the film (not shown). If it is determined that the first frame has been set, the flow proceeds to # 206.

Step # 206: The driving of the film driving device 105 is stopped, and the winding of the film is stopped.

It is determined whether or not the release button 10 has been pressed and the half-press SW 101 has been turned on.
If it is determined that the determination has been made, the process proceeds to step # 208.
Proceed to 19.

In step # 208, the luminance information of the subject is input by the photometric device 103.

In step # 209, information on the subject distance is input by the distance measuring device, and the lens is driven by the lens driving device to focus.

# 210 The shutter speed, aperture value, drive mode, AF mode, and the like are displayed on the display device 7 based on the subject luminance information obtained in # 208 and the set photographing mode (# 202). (State in FIG. 6) # 211 If exposure correction is to be performed, proceed to # 212; otherwise, proceed to # 213.

In step # 212, the amount of correction is input by pressing the exposure correction button 14 and the electronic dial 9, and displayed on the display device 7.

In step # 213, it is determined whether or not the release button 10 has been further pressed and the release switch has been turned on.
If it is determined that it has been performed, the process proceeds to # 214.

# 214 The shutter and the aperture are controlled by the shutter speed and the aperture value of # 210, and exposure is performed.

In step # 215, one frame of the film exposed in step # 214 is wound by the film driving device 105.

In step # 216, it is determined whether or not the film has been completed, that is, whether or not the photographing for the specified number of frames has been completed. If not, the process returns to step # 207, and the same operation is repeated. If the processing has been completed, the process proceeds to step # 217.

# 217: The film driving device 105 is driven to start rewinding the film. # 218 Stop rewinding after the time that all the film will be wound into the film cartridge 2 elapses.

In step # 219, it is determined whether the lid 3 of the film cartridge chamber 1a has been opened based on the state of the lid switch 15. If it is determined that the lid 3 has been opened, the flow returns to step # 201.

If the mode using the mode dial 8 has been changed, the process proceeds to step # 221. If the mode using the mode dial 8 is not changed, the process proceeds to step # 222.

# 221 The change of the mode of the mode dial 8 of # 220 is the change of the photographing mode (Tv, Av, P,
In the case of M), proceed to # 222, otherwise (ISO change mode), proceed to # 228.

In step # 222, it is determined whether or not the film feed mode switch button switch 13 has been pressed. If the switch 13 has been pressed, the process proceeds to step # 223. If not, the process proceeds to step # 224.

In step # 223, the film feed mode is changed, the display is displayed on the display device 7, and the flow returns to step # 207.

In step # 224, it is determined whether or not the AF mode switch button switch 12 has been pressed.
If not, go to # 226.

In step # 225, the AF mode is changed and displayed on the display device 7, and the flow returns to step # 207.

# 226 When exposure compensation is performed, # 227
If not, return to # 207.

In step # 227, the amount of correction is input by pressing the exposure correction button 14 and the electronic dial 9 and displayed on the display device 7, and the flow returns to step # 207.

In step # 228, the mode is set to the ISO change mode and the display shown in FIG. 7 is performed.

# 229 When performing ISO change, # 23
0, and when no change is made, the process proceeds to # 231.

In step # 230, the change amount is set by the electronic dial 9 (the state shown in FIG. 8).

# 231 It is determined whether the release button 10 has been pressed and the half-press switch 101 has been turned on.
If it is determined that the switch is turned on, the process proceeds to step # 232. If not, the process proceeds to step # 233.

# 232 The barcode information read in # 204 is displayed on the display device 7 (FIGS. 9 to 16).

When the mode dial 8 is changed from the ISO change mode, the process returns to step # 221.

The present invention can be applied to an image recording medium other than a film.

The present invention is also applicable to various types of cameras such as a single-lens reflex camera, a lens shutter camera, and a video camera.
Furthermore, for optical devices and other devices other than cameras, and further for those cameras, optical devices, and other devices, as well as devices that are applied to these cameras, optical devices, and other devices, or elements that constitute them Can be applied.

The present invention is such that the whole or part of the configuration of the claims or the embodiments forms one device and is combined with another device. Or a component such as a component of a device.

(Correspondence between Claims and Embodiments) The optical sensor 6 in the embodiments corresponds to the film information detecting means in the claims, and the display device 7 in the embodiments.
Corresponds to a display unit in the claims, the release button 10 of the embodiment corresponds to the release button of the claims.

The correspondence between the configuration of the embodiment and the configuration of the present invention has been described above. However, the present invention is not limited to the configuration of the embodiment, and the functions described in the claims or the configuration of the embodiment are described. Needless to say, any configuration may be used as long as the function of the device can be achieved.

[0076]

According to the first aspect of the present invention, a camera is provided.
Display means for displaying various types of information on the camera
When manually changing the fill sensitivity of a film
Shows the original film speed loaded.
And change the sensitivity in that state.
In the state, when you press the shutter release button halfway, it is loaded
The current film sensitivity and film type can be displayed .

According to the second aspect of the present invention, a film
Can be confirmed . According to the third aspect of the present invention, it is possible to easily confirm whether the change state of the film sensitivity when the film sensitivity change mode is set is properly performed.

According to the fourth aspect of the present invention, it is possible to accurately display the film information at the time of setting the film sensitivity change mode on the aperture value display unit without providing a separate film information display unit.

According to the fifth aspect of the present invention, it is possible to accurately display the film information at the time of setting the film sensitivity change mode on the exposure step display unit without providing a separate film information display unit.

[Brief description of the drawings]

FIG. 1 is a perspective view of a camera body showing a first embodiment of the invention according to the present application.

FIG. 2 is a perspective view of a film cartridge used in the camera according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view of the film cartridge chamber in a state where the film cartridge of FIG. 2 is mounted on the camera shown in FIG.

FIG. 4 is a block diagram showing an electric circuit of the camera of the first embodiment.

FIG. 5 is a plan view of a fully lit display state of the display device of the camera according to the first embodiment.

FIG. 6 is a plan view of the display device of FIG. 5 in a general shooting mode state.

FIG. 7 is a plan view of the display device showing the embodiment of FIG. 5 in an ISO change mode state.

FIG. 8 is a plan view of the display device showing the embodiment of FIG. 5 in an ISO changed state.

FIG. 9 is a plan view of the display device of FIG. 5 in a state where a color reversal film is loaded.

FIG. 10 is a plan view of the display device of FIG. 5 in a state where a color negative film is loaded.

11 is a plan view of the display device of FIG. 5 in a state where a monochrome negative film is loaded.

FIG. 12 is a plan view of the display device of FIG. 5 in a state where a special film is loaded.

FIG. 13 is a plan view of a display device according to a second embodiment of the present invention, with a color reversal film loaded therein.

FIG. 14 is a plan view of a display device according to a second embodiment of the present invention, with a color negative film loaded.

FIG. 15 is a plan view of a display device according to a second embodiment of the present invention, with a monochrome negative film loaded.

FIG. 16 is a plan view of a display device according to a second embodiment of the present invention in a state where a special film is loaded.

FIG. 17 is a flowchart showing the operation of the camera according to the first embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Camera 2 ... Film cartridge 3 ... Lid 4 ... Locking claw 5 ... Fork gear 6 ... Optical sensor 7 ... Display device 8 ... Mode dial 9 ... Electronic dial 10 ... Release button 11 ... Photographing lens barrel 12 ... AF mode switching button DESCRIPTION OF SYMBOLS 13 ... Film feed mode switching button 14 ... Exposure compensation button 2c ... Bar code pattern 100 ... Control device 101 ... Half-press switch 102 ... Release switch 20 ... ISO index 21 ... Shutter speed display part 22 ... Aperture value display part 23 ... Film Feed mode display section 24 AF mode display section 25 Film frame number display section 26 Exposure level difference display section

Continuation of the front page (56) References JP-A-4-56833 (JP, A) JP-A-5-53185 (JP, A) JP-A-60-60631 (JP, A) JP-A-61-29823 (JP) JP-A-61-123824 (JP, A) JP-A-3-28835 (JP, A) JP-A-6-332055 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB G03B 17/18-17/20 G03B 7/00-7/28

Claims (5)

(57) [Claims] 1. A camera which rotates integrally with a supply spool in a film cartridge and which can be loaded with a film cartridge having a recording section on which film information is recorded, wherein the camera rotates while the supply spool rotates. Film information detection means for detecting film information from the recording section of the camera, display means for displaying various camera information, a mode in which the film sensitivity can be changed by manual operation ,
Has a release button for reading film information read by more the film information detecting means, the display means,
The first display state for displaying normal camera information and the film loaded when setting the film sensitivity change mode
When the sensitivity is displayed and the film sensitivity is changed,
A second display state in which the changed sensitivity is displayed, and a half of the release button when the film sensitivity change mode is set.
By pressing, the sensitivity and fill of the loaded film are
A camera having a third display state for displaying a type of a camera. 2. The display device according to claim 1, wherein
In the third display state, the number of specified frames of the film is further displayed.
A camera characterized in that: 3. An apparatus according to claim 1 or 2, wherein the display means, said second display state, wherein the blinking display when the film sensitivity is changed by a manual operation
Camera . 4. The method of claim 1, 2 or 3, wherein the table <br/> Display means, said third display state, among the film information of various information of the camera, the display by the segment of the aperture value display unit A camera characterized in that: 5. A method according to claim 1, 2 or 3, wherein the table <br/> Display means, said third display state, among the film information of various information of the camera, be displayed by the exposure step display unit A camera characterized by the following.