JPH09197504A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent radiation noise so as to correctly input information by providing a flash light emitting means projecting light to a subject at the time of photographing and a control means inhibiting the operation of the flash light emitting means in the case film information is inputted by an information input means. SOLUTION: This camera in which a film cartridge CT having an information display member DD displaying the film information can be loaded and which has information input means S20 and S21 inputting the film information from the member DD is provided with the flash light emitting means projecting the light to the subject in photographing and the control means inhibiting the operation of the flash light emitting means in the case the film information is inputted by the input means S20 and S21. By such constitution, the influence of the noise produced by the flash light emitting means is eliminated when the information such as the kind of the film is inputted by the input means S20 and S21 so as to correctly input the information.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera having a magnetic recording section.

[0002]

2. Description of the Related Art In recent years, a photographic film using a film cartridge is provided with a magnetic recording section, and the camera records the data at the time of photographing in the magnetic recording section, which is used in the subsequent development or printing process. An image forming system has been proposed in which this information is read and used (for example, USP 4,864,332).

Further, regarding a film cartridge used in such an image forming system, a disc-shaped display member for displaying information such as film type, sensitivity and the number of photographed images is provided on the cartridge, and the film is stopped depending on the stop position of the disc. A technique for representing the image capturing state is also proposed by Japanese Patent Laid-Open No. 5-313233.

[0004]

By the way, the film information indicated by the above-mentioned display member of the film cartridge is coded black and white pattern information, and when the camera inputs such information, this display member is used. It is conceivable that information is read by a photoelectric conversion element or the like that is close to the. More specifically, a part of the rotating display member is irradiated with infrared light by an infrared light emitting diode, the reflected light from the display member is received by a photodiode or phototransistor, and light is received according to a black and white pattern. The information code can be identified by detecting the difference in current.

However, such a photoelectric conversion element such as a photodiode or a phototransistor and a circuit for detecting a light receiving current thereof are generally vulnerable to external noise in many cases, and in particular, a flash light emitting means provided in a camera generates a large amount of light. If there is radiation noise due to current, it is often impossible to accurately discriminate the information code.

An object of the present invention is to prevent radiation noise and accurately input information.

[0007]

The structure for realizing the object of the first invention of the present application enables a film cartridge having an information display member for displaying information of a film to be loaded, and the film information is displayed from the information display member. A camera having information inputting means for inputting has flashing emitting means for projecting light on a subject at the time of photographing, and control means for inhibiting operation of the flashing emitting means when film information is inputted by the information inputting means. Is characterized by.

In this structure, the operation of the flash light emitting means is a flash light emission and light emission charging operation.

According to this structure, when the information indicating the type of film is inputted by the information input means, the influence of noise generated by the flash light emitting means can be eliminated and the information can be accurately inputted.

According to a second aspect of the present invention, in the above-mentioned configuration, the information display member has code information indicating the type of film in the cartridge portion, and the film is photographed depending on its stop position. The control means prohibits the operation of the flash light emitting means when the code information indicating the type of the film is input by the information input means.

According to this structure, when the code information indicating the type of film is inputted by the information input means, the influence of noise or the like generated by the flash light emitting means can be eliminated and the information can be accurately inputted.

According to a third aspect of the invention of the present application, in the above-mentioned configuration, the control means controls the information display member while inputting code information indicating a film type by the information input means. In the camera, the operation of the flash light emitting means is prohibited when stopping at a predetermined stop position.

According to this structure, the influence of noise or the like generated by the flash light emitting means when the information display member is stopped at the predetermined stop position while the code information indicating the type of film is input by the information input means is eliminated. Thus, the information display member can be accurately stopped at the predetermined stop position.

The information input means of each of the above-mentioned constitutions is characterized in that it comprises a photoelectric conversion element arranged in the vicinity of the information display member indicating the type of the film.

According to this structure, the film type information can be accurately displayed by the compact circuit structure.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) FIG. 1 is a perspective view showing the configurations of a film cartridge, a film, and a peripheral portion thereof in a camera according to a first embodiment of the present invention.

In the figure, CT is a film cartridge, K is an opening / closing member for opening and closing a light-shielding lid at the film outlet of the film cartridge by rotating, DD is a type of film according to a coded black and white pattern,
Information display member for displaying information such as sensitivity and number of shots, FK
Is a fork for feeding and rewinding the film by rotating the film spool shaft of the cartridge. Incidentally, the information display member DD is a disk-shaped member similar to the technique described in JP-A-5-313233, and is rotated by the rotation of the fork FK.
Also, depending on the stop position of this disk, the filming condition of the film,
That is, it also indicates information such as unexposed, partially exposed or fully exposed. S20 and S21 are, for example, information input means composed of photoelectric conversion elements such as photo reflectors, and are arranged in the vicinity of the information display member DD for reading the black and white pattern while rotating the information display member DD. Is.

SW40 and SW41 are film cartridge presence / absence detection switch contacts that are short-circuited when the film cartridge CT is loaded in the film cartridge chamber of the camera, KT is an opening / closing drive member for driving the opening / closing member K, and SW30 And SW31 is a light shielding lid opening / closing detecting switch contact piece for detecting opening / closing of the light shielding lid,
When the opening / closing driving member KT drives the opening / closing member K and is in the open position of the light shielding lid, the conduction portion SW32 on the opening / closing driving member KT.
It is detected that the light blocking lid is driven to the open position by being short-circuited by.

FM is a film, T is a film FM
The upper magnetic tracks, P0 to P3, are perforations for positioning the photographing screen. S10 and S
Reference numeral 11 denotes a sensor for detecting the movement and stop position of the film by monitoring the perforations P0 to P3, and is composed of a photoelectric conversion element such as a photo reflector. H is a magnetic head for reading and writing magnetic information on the magnetic track T, and P is a magnetic head.
A is a pad for pressing the magnetic track T on the film FM against the magnetic head H. M1 is the first motor for winding and rewinding the film, and G
Reference numeral 1 is a gear train for connecting the motor M1 to a fork FK or a spool for winding the film, M2 is a second motor for driving the opening / closing drive member KT, and G2
Is a gear train for connecting the motor M2 and the opening / closing drive member KT.

FIG. 2 shows the film FM and the photoelectric sensor S.
10 is a diagram showing the relationship between 10 and S11 and the magnetic head H. FIG. In the figure, Aa is a screen on which an image has already been taken, Ab
Is the screen shot this time at the aperture position, Ac
Is the screen to be shot next. As described above, T is the magnetic track on the film FM, and Sa is the shooting screen Aa.
Is an area in which the photographing information is written by the magnetic head H when is wound up. Sb is a magnetic head H when this screen is rolled up after the shooting screen Ab has been shot.
Is an area in which shooting information is written. X is the film winding direction. Photoelectric sensors S10 and S
When the film is stopped at the normal stop position, the film 11 is arranged so as to be close to the perforations P2 and P1 representing the current photographing screen and inside the screen, as shown in the figure.

FIG. 3 shows an electric circuit configuration of the camera according to the present embodiment. In the figure, PRS is a control circuit for controlling the operation sequence of the entire camera, and is composed of, for example, a microcomputer. Note that a description of a specific operation sequence of the control circuit PRS will be given later.

MDR1 is a motor driver for driving the first motor M1 described with reference to FIG. 1, and is controlled by the control circuit PRS to drive the motor M1 for forward rotation energization, reverse rotation energization, braking and the like. . S1 is a sensor corresponding to the sensors S10 and S11 described in FIG. 1, the output of which is input to the control circuit PRS. The control circuit PRS monitors the outputs of these sensors to move the film or stop the film. You can know

HCK is a magnetic information control circuit which outputs write information to the magnetic head H described in FIG. 1 and amplifies read information from the magnetic head H. The control circuit PRS outputs necessary information to the magnetic information control circuit HCK when recording magnetic information on the film, and monitors the output of the magnetic information control circuit HCK when reading magnetic information from the film. S2 is a sensor corresponding to the sensors S20 and S21 which are the information input means described in FIG. 1, and the output thereof is the control circuit P.
The control circuit PRS, which is input to the RS, can know the type of film and the shooting state by monitoring the outputs of these sensors.

The MDR2 is a motor driver for driving the second motor M2 described in FIG. 1, and is controlled by the control circuit PRS to drive the motor M2 for forward rotation energization, reverse rotation energization, braking and the like. SWRL1 is a first stroke switch that is turned on by the first stroke of the release switch of the camera, and a switch signal is input to the control circuit PRS. SWRL2 is a second stroke switch that is turned on by the second stroke of the release switch of the camera, and a switch signal is input to the control circuit PRS. SW2 is a switch for detecting opening / closing of a lid of a film cartridge storage chamber (not shown), and a switch signal is input to the control circuit PRS.

SW3 is a light-shielding lid opening / closing detection switch contact piece SW30 and SW31 described in FIG.
A switch signal is input to the control circuit PRS by the light-shielding lid open / close detection switch that indicates that the light-shielding lid configured by is opened. SW4 is a cartridge presence / absence detection switch composed of the cartridge presence / absence detection switch contacts SW40 and SW41 described in FIG. 1, and a switch signal is input to the control circuit PRS. SWMR is a mirror down detection switch for detecting the down of the main mirror of the camera, and a switch signal is input to the control circuit PRS.

The LM is a photometric means composed of, for example, a phototransistor, and its output is the control circuit PR.
Input to S. The control circuit PRS can obtain the brightness information of the subject by reading the output of the photometric means LM. DM is a distance measuring means composed of, for example, a CCD line sensor, and its output is input to the control circuit PRS. The control circuit PRS can obtain information on the distance to the subject by reading the output of the distance measuring means DM. SH is an exposure control unit including, for example, a shutter and a diaphragm, and exposes the film based on a signal output by the control circuit PRS. LDR
Is a lens driving means including, for example, a motor, a drive circuit thereof, a transmission mechanism, and the like, and drives the lens based on a signal output by the control circuit PRS.
The DSP is a display unit including, for example, an LED or an LCD, and performs various displays based on the signal output by the control circuit PRS.

The MEM is a storage means for storing a data conversion table, which will be described later, and is a device such as a rewritable nonvolatile memory such as EEPROM or FRAM. ST is a flash light emitting means for illuminating the subject at the time of shooting, RL is a light emitting means for alleviating the red-eye phenomenon at the time of stroboscopic shooting, and AUX is for the subject to perform autofocus when the illuminance of the subject is not sufficient. It is a light projecting means as an auxiliary light for projecting light.

Next, a specific operation sequence of the control circuit PRS will be described with reference to the flowcharts of FIGS.

When the power supply switch (not shown) is turned on and the control circuit PRS becomes operable, the control circuit PRS operates sequentially from step # 1 in FIG.

# 1: The control circuit PRS initializes memory and ports.

# 2: Cartridge presence / absence detection switch SW
Check condition 4. If it is off, the cartridge is absent, that is, the film cartridge is not inserted in the camera, so that the camera waits for the film cartridge to be inserted. When the film cartridge is inserted into the camera and SW4 is turned on, the process proceeds to # 3.

# 3: Check the state of the switch SW2 for detecting the opening / closing of the lid of the film cartridge storage chamber. If it is off, it means that the lid of the film cartridge storage chamber is still open, so wait for it to be closed. SW when the lid of the film cartridge storage room is closed
When 2 is turned on, the process proceeds to # 4.

# 4: A control signal is output to the motor driver MDR2 to start driving the second motor M2.

# 5: Switch SW3 indicating that the light shielding lid is opened by inputting the information of the light shielding lid opening / closing detection switch SW3.
Wait to detect the ON state of.

# 6: When the ON state of the switch SW3 is detected, a control signal is output to the motor driver MDR2 to stop the driving of the second motor M2.

# 7: A signal is output so as to prohibit the charging operation and the light emitting operation of the flash light emitting means ST.

# 8: A control signal is output to the motor driver MDR1 to start driving the first motor M1 in a predetermined direction. As a result, the rotation of the information display member DD of the film cartridge is started.

# 9: Input the information recorded on the information display member DD.

Details of information input from the information display member DD will be described below with reference to the flowchart of FIG.

# 71: The information of the coded black and white pattern recorded on the information display member DD is inputted from the information input means S2.

# 72: A control signal is output to the motor driver MDR1 to stop the driving of the first motor M1.

# 73: The information of the coded black and white pattern input in the step of # 71 is decoded into information such as the type of film, the sensitivity, and the number of shots.

As a specific example, it is assumed that the coded black and white pattern information recorded on the information display member DD is 6-bit information. Assuming that the 6-bit information is further divided into 3 bits and one piece of 3-bit information represents the number of film shots, and the other 3-bit information represents the film sensitivity information, as shown in FIG. The data definition of the number-of-photographed information and the data definition of the sensitivity information as shown in FIG. 10 can be performed. In FIG. 9, b0, b
1 and b2 represent each bit of 3 bits, and can be converted into data by, for example, deciding a narrow pattern of the black and white patterns of the information display member DD as 0, and a wide pattern as 1. Eight types of information can be represented by taking 0 or 1 for b0, b1, and b2, respectively.
It may not be possible to realize a pattern in which all of b1 and b2 are 1, that is, a wide pattern, because it may not be realized due to the space limitation of the information display member DD, and it is treated as a nonexistent code here. For other codes, as shown in FIG. 9, b0, b
From the case where all of 1 and b2 are 0, 10 to 36 images are sequentially assigned. However, the cases where b0, b1, b2 are 1,0,0 and 1,1,0 are empty codes for which the number of sheets is not determined. The empty code corresponds to the case that it is a special film, or that it is prepared in case a new film number of films is set in the future.

FIG. 10 defines the sensitivity information of the film by the 3-bit information in the same way, and also b3.
The case where all of b4 and b5 are 1 is treated as a nonexistent code, the case where b3, b4 and b5 are 1, 1 and 0 is regarded as an empty code, and all other b3, b4 and b5 are 0.
The sensitivity information is assigned from 25 to 400 in order from the case of. It should be noted that FIGS. 9 and 10 are merely examples, and this is not all.

In this embodiment, the data table for converting the code information recorded on the information display member DD as shown in FIGS. 9 and 10 into the actual film information is described in FIG. It is stored in the MEM in advance.

Therefore, the control circuit PRS obtains information on the number of film shots and the sensitivity by referring to the data previously stored in the storage means MEM according to the code pattern of the information display member DD input in step # 71. You can

# 74: Whether or not the information on the number of shots or the sensitivity as a result of decoding is a nonexistent code generated due to a defect or a defect in the information display member DD or an abnormality in the information input means, etc. I will check. Normally, there can be no non-existent code, so the process proceeds to # 75.

# 75: It is checked whether or not the information on the number of captured images as a result of decoding is the above-mentioned empty code. Also in this case, normally, there is no empty code, so the process proceeds to step # 76.

# 76: Data corresponding to the information of the number of shots as a result of decoding is output to the display means DSP to display the number of shots.

If the film is a special film or a film having a newly set number of shots,
If the information about the number of shots is a blank code in step 75, the process proceeds from # 75 to # 77.

# 77: Since the information on the number of shots is an empty code, the data is output to the display means DSP so that the display of the number of shots becomes a blank display.

When # 76 or # 77 is completed, either #
Proceed to 78.

# 78: It is checked whether or not the information on the sensitivity as a result of decoding is the above-mentioned empty code. Also in this case, normally, there is no empty code, so that the process proceeds to # 79.

# 79: Data corresponding to the sensitivity information as a result of decoding is output to the display means DSP to display the sensitivity. Incidentally, as a concrete display mode of the display means DSP, one as shown in FIG. 11 can be considered.

In FIG. 11, the 7SEG-1 group is a 4-digit 7-segment for displaying shutter speed, 7SE.
The G-2 group is a 2-digit 7 segment that displays the aperture value, and the 7SEG-3 group is a 3-digit 7 segment that displays the sensitivity.
The segment, 7SEG-4 group, is a 2-digit 7-segment for displaying the number of shots.

If the film is a special film or a film with a newly set number of shots,
If the sensitivity information is an empty code in step 78, the process proceeds to # 80.

# 80: Data is displayed on the display means DS so that the sensitivity information of the film used in the previous photographing is displayed in blinking.
Output to P to display the sensitivity. It is assumed that the sensitivity information is set to a normal value such as a sensitivity of 100 when the camera has never been used for photographing.

If the result of decoding in step # 74 is a nonexistent code, the process proceeds to step # 81.

# 81: The fact that the decrypted result becomes a nonexistent code may be due to a defect or a defect in the information display member DD or an abnormality in the information input means. There is a high possibility that inconvenience will occur when loading and shooting. Therefore, photographing is prohibited and this is displayed. For example, all the segments of the 7SEG-3 group and the 7SEG-4 group of the display means DSP are displayed in a blinking manner so as to be defined as display indicating photography prohibition, and data corresponding to this is output to the display means DSP.

# 82: The state of the switch SW2 for detecting the opening / closing of the lid of the film cartridge storage chamber is checked, and the switch SW2 is turned off to open the lid of the film cartridge storage chamber. Wait to be done.

When it is detected that the lid of the film cartridge storage chamber is opened, the process returns to the start.

When the step of # 79 or # 80 is completed, the process proceeds to # 10 in FIG.

# 10: Next, a mechanism (not shown) is switched so that the film can be loaded by driving the motor M1.

# 11: A control signal is output to the motor driver MDR1 to start driving the first motor M1.
This starts the film loading.

# 12: When the output of the sensor S1 is monitored and it is detected that the film has been fed to the position of the first frame, the process proceeds to # 13.

# 13: A control signal is output to the motor driver MDR1 to stop the driving of the first motor M1.
This completes film loading.

When # 13 in FIG. 4 is completed, the process proceeds to # 14 in FIG.

# 14: First release switch of camera
It is checked whether or not the stroke switch SWRL1 is turned on, and if it is turned on, the process proceeds to step # 15.

# 15: Information on the brightness of the subject is input from the photometric means LM.

# 16: It is checked whether or not the inputted information on the brightness of the object is equal to or more than a predetermined value which enables distance measurement. If it is equal to or larger than the predetermined value, the process proceeds to # 18. If not, the process proceeds to # 17.

# 17: Since the subject brightness is not sufficient, the light projecting means AUX is turned on to illuminate the subject. This enables distance measurement even in a situation where the brightness of the subject is not sufficient.

# 18: Information regarding the distance to the subject is input from the distance measuring means DM.

# 19: The light projecting means AUX is turned off. If the brightness of the subject is sufficient and step # 17 is not executed, this step is meaningless,
When the step of # 17 is executed, the light projecting means AUX turned on in the step of # 17 is turned off in this step.

# 20: An output signal is outputted to the lens driving means LDR so that the lens is brought into the in-focus state on the basis of the inputted information relating to the distance to the object.

# 21: Information on the brightness of the subject is input from the photometric means LM.

# 22: It is checked whether or not the inputted information on the brightness of the subject is equal to or larger than a predetermined value at which the flash light emission is unnecessary. If it is equal to or larger than the predetermined value, the process proceeds to # 23. In this step, the information about the brightness of the subject is stored in its own memory because it is necessary in the step subsequent to the result of the determination as to whether or not the strobe light emission is not less than a predetermined value that is unnecessary.

# 23: Determine the shutter speed and aperture value that will result in proper exposure based on the input information relating to the brightness of the subject.

# 24: Data relating to the determined shutter speed and aperture value is output to the display means DSP for display.

# 25: Second release switch of camera
Check if the stroke switch SWRL2 is turned on. If off, #
Return to 14.

If the subject brightness is less than the predetermined value in step # 22, the process proceeds to step # 26.

# 26: Since the brightness of the subject is not sufficient, the shutter speed and aperture value for photographing using a strobe are determined.

# 27: Control output is made to the flash light emitting means ST to prepare for light emission.

After that, the process proceeds to step # 24, the information is displayed, and the process proceeds to step # 25. Second in step # 25
When the stroke switch SWRL2 is turned on, the process proceeds to # 28 in FIG.

# 28: When the information on the brightness of the subject stored in the step of # 22 is referred to the judgment result as to whether or not the stroboscopic light emission is not more than a predetermined value, and is less than the predetermined value Proceeds to # 29.

# 29: The light emitting means RL is caused to emit light in order to mitigate the red-eye phenomenon that tends to occur when stroboscopic photography is performed.

# 30: Wait until the predetermined light emitting time of the light emitting means RL elapses.

# 31: The light emission of the light emitting means RL is stopped.

# 32: The mirror driving mechanism (not shown) is controlled to raise the main mirror. If the result of determination in step # 28 is greater than or equal to the predetermined value, stroboscopic photography is not performed, so steps from # 29 to # 31 are not executed and the process proceeds to # 32.

# 33: The exposure control means SH is controlled based on the aperture value determined in the step of # 23 or # 26 to narrow down the aperture.

# 34: The exposure control means SH is controlled to start the travel of the shutter to start the exposure.

# 35: Similar to the step of # 28, the stored information about the luminance of the subject is referred to the judgment result as to whether or not the stroboscopic light emission is unnecessary and is equal to or more than the predetermined value. If not, proceed to # 36.

# 36: A trigger signal is output to the flash light emitting means ST to start flash emission.

# 37: Wait until the flash emission is completed.

If the result of determination in step # 35 is equal to or greater than the predetermined value, stroboscopic photography is not performed, and therefore steps # 36 to # 37 are not executed and the process proceeds to step # 38.

# 38: Wait for the exposure time based on the shutter speed determined in step # 23 or # 26 to elapse.

# 39: The exposure control means SH is controlled to close the shutter.

# 40: The exposure control means SH is controlled to open the diaphragm.

# 41: The mirror drive mechanism (not shown) is controlled to start the down of the main mirror.

# 42: Input the information of the switch SWMR for detecting the down of the main mirror and wait for the completion of the down of the mirror. When the completion of the down of the main mirror is detected, # 4 in FIG.
Proceed to 3.

# 43: A control signal is output to the motor driver MDR1 to start driving the first motor M1 to start film winding.

# 44: A timer for detecting film perforation is started.

# 45: Magnetic recording of necessary information regarding photographing is performed.

# 46: The output of the sensor S1 is monitored to check whether the film has been fed to the position of the next frame to be photographed. If it has not been sent to the position of the next frame, the process proceeds to # 47.

# 47: It is checked whether or not the timer started in step # 44 has finished counting a predetermined time. If the predetermined time has not been measured yet, the process returns to # 46.

When it is detected in step # 46 that the film has been fed to the position of the next frame to be photographed while repeating the above processing, the process proceeds to step # 48.

# 48: A control signal is output to the motor driver MDR1 to stop driving the first motor M1.
Thereafter, the process returns to step # 14 in FIG. 5 to execute the shooting of the next frame.

If it is determined in step # 47 that the timer has finished measuring the predetermined time, the process proceeds to step # 49. In this case, since the film cannot be fed to the position of the next frame to be photographed even if the film is wound for a predetermined time, that is, the filming of the last frame has been completed, the film is rewound.

# 49: A control signal is output to the motor driver MDR1 to stop the driving of the first motor M1.

# 50: A mechanism (not shown) is switched so that the film can be rewound.

# 51: A control signal is output to the motor driver MDR1 to start driving the first motor M1 to start film rewinding.

# 52: Wait until the film rewinding is completed.

# 53: A signal is output so as to prohibit the charging operation and the light emitting operation of the flash light emitting means ST.

# 54: The information of the black-and-white pattern recorded on the information display member DD is input from the information input means S2, and the process waits until the film reaches the desired stop position indicating that the film is completely exposed.

# 55: A control signal is output to the motor driver MDR1 to stop driving the first motor M1.

# 56: A control signal is output to the motor driver MDR2 to start driving the second motor M2.

# 57: Switch SW which indicates that the light shielding lid is closed by inputting the information of the light shielding lid opening / closing detection switch SW3.
Wait for detection of the OFF state of No. 3.

# 58: When the OFF state of the switch SW3 is detected, a control signal is output to the motor driver MDR2 to stop the driving of the second motor M2.

# 59: The state of the switch SW2 for detecting the opening / closing of the lid of the film cartridge storage chamber is checked, and the switch SW2 is turned off to open the lid of the film cartridge storage chamber. Wait to be done. When it is detected that the lid of the film cartridge storage chamber is opened, the process returns to the start.

(Relationship between Configuration of Embodiment and Claims) The information display member DD in the embodiment corresponds to the information display member described in the claims, and the information input means S2.
Is equivalent to the information inputting means, the flash emitting means ST is equivalent to the flash emitting means, the control means is equivalent to the control means PRS, and step # 7 of FIG. 4 and step # 53 of FIG. 7 are equivalent to the flash emitting means. This corresponds to prohibiting the light emission and the charging operation.

The present invention is applicable to various types of cameras such as single-lens reflex cameras, lens shutter cameras, video cameras,
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.

Further, the present invention is such that the whole or part of the constitution of the claims or the embodiments forms one device and is combined with another device. It may be present or may be an element constituting the device.

[0122]

According to the first and second aspects of the present invention, when the information indicating the type of film is input by the information input means, the influence of noise or the like generated by the flash light emitting means is eliminated and the information is accurately input. Can be done.

According to the third aspect of the present invention, when the code information indicating the type of film is inputted by the information input means, the influence of noise or the like generated by the flash light emitting means is eliminated and the information is accurately inputted. You can

According to the invention of claim 4, noise or the like generated by the flash light emitting means when the information display member is stopped at a predetermined stop position while inputting code information indicating the type of film by the information input means It is possible to accurately stop the information display member at a predetermined stop position by eliminating the influence of.

According to the invention of claim 5, the information on the film type can be accurately displayed by the compact circuit structure.

[Brief description of drawings]

FIG. 1 is a perspective view showing the configurations of a film cartridge, a film, and a peripheral portion of a film cartridge of a camera according to a first embodiment of the present invention.

FIG. 2 is a front view showing the positional relationship between the film of FIG. 1 and a sensor.

FIG. 3 is an electric circuit configuration diagram of the camera of the first embodiment of the invention according to the present application.

FIG. 4 is a flowchart of a control circuit in the first embodiment of the invention according to the present application.

FIG. 5 is a flowchart showing an operation after # (13) in FIG.

FIG. 6 is a flowchart showing an operation after # (25) in FIG.

FIG. 7 is a flowchart showing an operation after # (42) in FIG.

FIG. 8 is a flowchart showing an operation after # (9) in FIG.

FIG. 9 is a diagram showing a data conversion table in the first embodiment of the invention according to the present application.

FIG. 10 is a diagram showing a data conversion table in the first embodiment of the invention according to the present application.

FIG. 11 is a diagram showing a display unit according to the first embodiment of the invention according to the present application.

[Explanation of symbols]

CT ... Film cartridge DD ... Information display member S10, S11 ... Detecting means S20, S21
... information input means T ... magnetic track H ... magnetic head PRS ... control circuit DSP ... display means ST ... flash light emitting means MEM ... storage means

Claims (5)

[Claims] 1. A flash light which is projected onto an object at the time of photographing in a camera which can be loaded with a film cartridge having an information display member showing information of film and which has an information input means for inputting film information from the information display member. A camera comprising a light emitting means and a control means for prohibiting the operation of the flash light emitting means when film information is inputted by the information inputting means. 2. The camera according to claim 1, wherein the flash light emitting means performs flash light emission and light emission charging operation. 3. The information display member according to claim 1, wherein the information display member is a member that has code information indicating a film type in a cartridge portion and also indicates a filming state of the film depending on a stop position thereof. A camera, characterized in that the operation of the flash light emitting means is prohibited when the code information indicating the type of film is input by the information input means. 4. The flash device according to claim 1 or 2, wherein the control means stops the information display member at a predetermined stop position while inputting code information indicating a film type by the information input means. A camera characterized in that the operation of the light emitting means is prohibited. 5. The camera according to claim 1, wherein the information input means includes a photoelectric conversion element arranged in proximity to an information display member indicating the type of the film.