JPH11190865A - Endoscopic camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discriminate film information even in the case of a film cassette having no electric element. SOLUTION: The film discrimination circuit 23 of the endoscopic camera 1 is constituted of a power source 26 connected to a contact 21 through a resistance 25 connected in series, resistances 28 and 29 connected in parallel between the contact 21 side of the resistance 25 and ground equivalently to a fixed resistance 15 so that they can be selected by a switch 27 and having resistance values corresponding to 1st film information and 2nd film information, an A/D converter 30 A/D converting the fall of potential at the resistance 28 or 29 by the energizing of the power source 26 or at the fixed resistance 15 of the 2nd film cassette 4b, and a CPU 31 discriminating 1st or 2nd film information or the film information of the film cassette 4b according to the A/D converted digital signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope camera, and more particularly, to an endoscope camera having a feature in an identification portion of film information of a film cassette.

[0002]

2. Description of the Related Art In recent years, there has been a need to increase the quality of an endoscope image by reducing the size of a film emulsion and increasing the sensitivity of a film so that it can be photographed with a dark illumination device. In addition, it is necessary to use various special films depending on the application, and information on those films includes the number of films, film sensitivity (ISO), and film type (negative /
Positive film) and color temperature type (daylight / tungsten).

In view of the above, various proposals have conventionally been made for reading film information on the endoscope camera side and controlling the camera in accordance with the film information.

As a prior art, for example, Japanese Patent No. 264792
In Japanese Unexamined Patent Publication No. 6 (KOKAI), as shown in FIG.
01, a fixed resistor 104 is provided as an electric element having contacts 102 and 103 connected to both ends.
An endoscope camera 105 capable of reading the film information by the camera 04 is disclosed.

[0005] Specifically, the endoscope camera 105 includes:
The film cassette 101 is detachably mounted, and the contact 1
02 and 103 are provided for contact with the film cassette 101.
And the contact 102, and the contact 103a and the contact 103 are electrically connected to each other. The resistor 106 is energized from a power supply 107 connected in series with a contact 102 a provided on the endoscope camera 105, and the voltage drop due to the fixed resistor 104 is reduced by the CPU 109 via the A / D converter 108. The CPU 109 controls the camera driving unit 110 by reading as film information.

[0006]

However, such an endoscope camera in which an electric element such as a fixed resistor is provided in a film cassette and the camera automatically reads film information and automatically sets photographing conditions as described above. For a film cassette having an electric element for identification, reading of film information and setting of photographing conditions can be easily performed, but a conventional film cassette having no electric element for identification is used. There is a problem that you can not do.

The present invention has been made in view of the above circumstances, and has as its object to provide an endoscope camera that can identify film information even for a film cassette having no electric element.

[0008]

SUMMARY OF THE INVENTION An endoscope camera according to the present invention comprises: a cassette body for accommodating a film therein; a fixed resistor provided in the cassette body for setting a plurality of pieces of film information; An endoscope camera having a film identification means for removably loading a film cassette having a cassette-side contact that outputs film information and inputting film information from the cassette-side contact to identify the film. One or more resistors arranged equivalently to the fixed resistors of the film cassette, and a resistor selection unit that selects the one or more resistors, sets film information, and outputs the film information to the film identification unit. It is composed.

In the endoscope camera according to the present invention, the resistance selecting means selects the one or more resistors arranged equivalently to the fixed resistance of the film cassette, sets film information, and sets the film identification means. By outputting to
Film information can be identified even for a film cassette having no electric element.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 7 relate to an embodiment of the present invention. FIG. 1 is a configuration diagram showing a configuration of a main part of an endoscope camera, and FIG. 2 is a configuration showing a configuration of a film identification circuit of FIG. FIG. 3 is an external view showing the attachment of the endoscope camera of FIG. 1 to the endoscope, and FIG. 4 is a front view of a first film cassette (FIG. 4 (a)) loaded into the endoscope camera of FIG. )) And back (FIG. 4)
FIG. 5 is a diagram showing the front (FIG. 5 (a)) and the back (FIG. 5 (b)) of the second film cassette loaded in the endoscope camera of FIG. 6 is an explanatory diagram for explaining the operation of the endoscope camera of FIG. 1, and FIG. 7 is a configuration diagram showing a configuration of a modification of the film identification circuit of FIG.

(Structure) As shown in FIG. 3, an endoscope camera 1 according to the present embodiment is detachably mounted on an eyepiece 3 of an endoscope 2 inserted into a body cavity, and is provided with an endoscope. Inside the mirror camera 1, a first film cassette 4a or a second
The film cassette 4b is detachably loaded.

The endoscope 2 includes an operating section 5 provided with operating members for the operator to hold and perform various operations, and a slender, flexible body cavity extending from the operating section 5. It comprises an insertion part 6 to be inserted into the inside, and the eyepiece part 3 and the like, which are connected to the operation part 5 and include an optical system and the like for observing organs and the like in a body cavity.

The first film cassette 4a is a film cassette having no electric element, and has a flat portion on the back side as shown in FIG. 4, and has a top opening and a bottom opening closed. A film supply unit 11 having a substantially cylindrical shape in a light-tight state, for example, a roll-shaped photographic film 10a having a width of 16 mm or the like wound thereon and stored therein, and a film having substantially the same shape as the film supply unit 11. Supply unit 1
A film take-up unit 12 for taking up and storing the photographed photo film 10a supplied from 1; and a film supply unit 11 and a film take-up unit 12 provided between the film supply unit 11 and the film take-up unit 12. The bridge 13 connects the lower part of the opposing wall. And
Inside the film take-up section 12, a film take-up spool 14 for winding up a photographed photo film 10a is rotatably supported.

As shown in FIG. 5, the second film cassette 4b has a film supply unit 11 in which a photographic film 10b is wound and stored, similarly to the first film cassette 4a. Part 12 and bridge 1
3 and also the film winding unit 1
Inside 2, a film winding spool 14 for winding up a photographed film 10b is rotatably supported. In the second film cassette 4b, the bridge 13
A fixed resistor 15 having a resistance value according to the film information of the photographic film 10b is provided as an electric element, and both ends of the fixed resistor 15 are connected to contacts 17 and 18, respectively.

Here, the film information includes the number of films, film sensitivity (ISO), and film type (negative /
Positive film), color temperature type (daylight / tungsten), maker and the like.

As shown in FIG. 1, the endoscope camera 1
When the second film cassette 4b is loaded, contacts 21 and 22 are provided at positions electrically connected to the contacts 17 and 18 of the second film cassette 4b. The contacts 21 and 22 are connected to the film cassette 4a ( 4b) Film 10
a (10b), and a camera drive unit 24 that performs setting according to the film based on the identification result of the film identification circuit 23.

As shown in FIG. 2, the film identification circuit 23
Is a resistor 25 equivalent to the fixed resistor 15 which can be selected by a power supply 26 connected to the contact 21 via a resistor 25 connected in series, and a switch 27 provided on the outer surface of the main body of the endoscope camera 1. The resistors 28 and 29 having resistance values corresponding to the first film information and the second film information connected in parallel between the contact 21 and the ground, and a power supply 26 connected to the contact 21 of the resistor 25. 2
8 or resistor 29 or second film cassette 4b
A / D converter 30 for A / D-converting the potential drop (voltage) at the fixed resistor 15 of the first embodiment, and the first film information or the second film information based on the digital signal A / D-converted by the A / D converter 30. Film information or second film cassette 4
The CPU 31 controls the camera driving unit 24.

(Operation) Next, the operation of the present embodiment configured as described above will be described.

As shown in FIG. 2, the endoscope camera 1 has a second
When the film cassette 4b is loaded, the switch 27 is set to the neutral position (both resistors 28 and 29 are not selected), the power is supplied from the power supply 26, and the voltage drop due to the fixed resistor 15 of the second film cassette 4b. A
The CPU 31 reads the film information of the second film cassette 4b through the / D converter 30 to obtain the CP.
U31 controls the camera drive unit 24.

As shown in FIG. 6, the endoscope camera 1 has a first
If the film information of the first film cassette 4a is the first film information, for example, the switch 27 is set to the a side (the position for selecting the resistor 28) and the power supply 26 Energize the resistor 28
Voltage drop by the A / D converter 30 to the CPU 31
By reading it as the first film information, the CPU 3
1 controls the camera driving unit 24.

If the film information of the first film cassette 4a is the second film information, for example, the switch 27 is set to the b side (position for selecting the resistor 29), and the power is similarly supplied from the power source 26. The CPU 31 controls the camera driving unit 24 by reading the voltage drop due to the resistor 29 as the second film information by the CPU 31 via the A / D converter 30.

Although not shown, the resistor 28 can be selected by a switch 27 to deal with the case where the film information of the first film cassette 4a is neither the first film information nor the second film information. By providing a plurality of resistors having resistance values corresponding to different film information in parallel with the film information 29, the film information of the first film cassette 4a other than the first film information and the second film information can be identified. You may comprise.

In the endoscope camera 1, as shown in FIG. 7, when the film cassette having no electric element is always the film cassette 4a having the same film information, for example, the resistance is changed without the switch 27. 2
8 via the A / D converter 30 to the CPU 3
1 may be read as film information. In this case, when the film cassette 4b having the electric element is loaded in the endoscope camera 1, the resistor 28 and the fixed resistor 15 of the film cassette 4b are connected in parallel, and the resistor 28 and the fixed resistor 15 The voltage drop due to the combined resistance may be read as the film information of the film cassette 4b by the CPU 31 via the A / D converter 30.

(Effect) As described above, in the present embodiment, by selecting the resistors 28 and 29 provided equivalently to the fixed resistor 15 by the switch 27, the film cassette having no fixed resistor as an electric element. Resistance 2
8, 29, the film information of the film cassette can be identified.

[Supplementary Note] (Supplementary Note 1) A cassette main body that stores a film inside, a fixed resistor provided in the cassette main body for setting a plurality of pieces of film information, and the film information set by the fixed resistor is output. An endoscope camera having a film identification means for removably loading a film cassette having a cassette side contact and inputting film information from the cassette side contact to identify the film, wherein the fixed resistance of the film cassette is And one or more resistors arranged equivalently to the above, and a resistor selection means for selecting the one or more resistors, setting film information and outputting the film information to the film identification means. Endoscope camera.

(Additional Item 2) A cassette body accommodating a film therein, a fixed resistor provided in the cassette body for setting a plurality of pieces of film information, and a cassette-side contact for outputting the film information set by the fixed resistor In an endoscope camera having a film identification means for removably loading a film cassette having the above and inputting film information from the cassette side contact and identifying the film, the film resistance is equivalent to the fixed resistance of the film cassette. An endoscope camera comprising an arranged resistor.

[0028]

As described above, according to the endoscope camera of the present invention, the resistor selection means selects one or a plurality of resistors arranged equivalently to the fixed resistor of the film cassette and sets the film information. Output to the film identification means, the film information can be identified even for a film cassette having no electric element.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a configuration of a main part of an endoscope camera according to an embodiment of the present invention;

FIG. 2 is a configuration diagram showing a configuration of a film identification circuit in FIG. 1;

FIG. 3 is an external view showing attachment of the endoscope camera of FIG. 1 to an endoscope.

FIG. 4 is a front view (FIG. 4A) and a rear view (FIG. 4A) of a first film cassette to be loaded into the endoscope camera of FIG.
Figure showing (b))

FIG. 5 is a front view (FIG. 5A) and a rear view (FIG. 5) of a second film cassette loaded in the endoscope camera of FIG.
Figure showing (b))

FIG. 6 is an explanatory diagram illustrating the operation of the endoscope camera in FIG. 1;

FIG. 7 is a configuration diagram showing a configuration of a modification of the film identification circuit of FIG. 2;

FIG. 8 is a configuration diagram showing a configuration of a main part of a conventional endoscope camera.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Endoscope camera 2 ... Endoscope 3 ... Eyepiece 4a ... 1st film cassette 4b ... 2nd film cassette 5 ... Operation part 6 ... Insertion part 10a, 10b ... Photo film 11 ... Film supply part 12 ... Film take-up part 13 ... Bridge 14 ... Film take-up spool 15 ... Fixed resistance 17, 18, 21, 22 ... Contact 23 ... Film identification circuit 24 ... Camera drive part 25,28,29 ... Resistance 26 ... Power supply 27 ... Switch 30 A / D converter 31 CPU

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Kazuma Kaneko 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Nao Takemura 2-43-2 Hatagaya, Shibuya-ku, Tokyo No. Olympus Optical Kogyo Co., Ltd. (72) Ryoichi Hosoya Inventor 2-43-2 Hatagaya, Shibuya-ku, Tokyo Shingo Kato 2-72 Hatagaya 2-43-2, Hatagaya Shibuya-ku, Tokyo No. Olympus Optical Co., Ltd. (72) Inventor Tadayoshi Hara 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd.

Claims (1)

[Claims] A cassette body for accommodating a film therein; a fixed resistor provided in the cassette body for setting a plurality of pieces of film information; and a cassette side contact for outputting the film information set by the fixed resistor. An endoscope camera having a film identification unit for removably loading the film cassette, and inputting film information from the cassette side contact to identify the film, wherein the film cassette is disposed equivalent to the fixed resistance of the film cassette. An endoscope camera comprising: one or a plurality of resistors; and a resistor selection unit that selects the one or a plurality of resistors, sets film information, and outputs the film information to the film identification unit.