JP2594471B2 - Information reading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method in which, for example, a film or the like held on a slide mount is sequentially sent one by one from a storage unit to a reading unit, and information recorded on the film in the reading unit. The present invention relates to an information reading device such as a slide projector for reading an image.

<Prior Art> Conventionally, as this type of apparatus, for example, a slide projector having an automatic frame feed function described later is widely known. This apparatus is provided with a film supply device (hereinafter referred to as an auto-changer) having a tray for storing the film held on a slide mount and a reading unit provided at a lower portion of the tray for reading information of the film. Have been.

The tray is installed rotatably by a driving means, and a plurality of storage portions are formed radially around the rotation center at equal intervals, and one film is stored in one storage portion. I have. Each time the forward button or the reverse button is pressed once, the tray is rotated by one storage unit (hereinafter, referred to as one frame) in one direction (hereinafter, referred to as "frame feed"). The film moves to a predetermined position (hereinafter, referred to as a supply position) at the upper portion of the reading unit, and the film moved to the supply position is taken into the reading unit,
The information of the film in the reading section is read using a D-line sensor or the like.

When the films are stored in the tray in conjunction with each other, the frames are automatically fed to the tray, and the films are sequentially sent one by one to the reading section, whereby the information can be read continuously ( Hereinafter, this function is called automatic frame feed.)

<Problems to be Solved by the Invention> However, in the above-described conventional example, even during the automatic frame feeding operation, each time the forward button or the reverse button is pressed once, the tray rotates in one direction in one direction by one frame in the storage portion. If the forward button or the reverse button is erroneously pressed during the automatic frame feed operation, there is a drawback that the film to be actually read is skipped.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an information reading apparatus which can eliminate the above-mentioned drawbacks of the conventional example and can accurately read a film during automatic frame feeding.

<Means for Solving the Problems> In order to achieve the above object, the present invention moves information recording media individually stored in a plurality of storage units one by one to a reading unit, and sequentially stores information in the information recording medium. In the information reading apparatus for reading the information, a switch for rotating only the storage unit is provided, and when the information is continuously read by automatically rotating the storage unit, the function of the switch is prohibited. It was done.

<Operation> In the information reading apparatus having the above configuration, the function of the forward button or the reverse button as a switch for rotating the storage section by one is prohibited during the automatic frame feeding operation. Can be performed accurately.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

FIG. 1 is a schematic configuration diagram of the information reading apparatus. In FIG. 1, the information reading apparatus 1 is provided with an auto-changer 5 comprising a tray 3 installed on a tray base 2 and a reading unit 4 provided below the tray base 2.

The tray base 2 is installed rotatably by an auto-changer drive circuit 6, and the tray 3 is formed with a plurality of storage portions 3a, 3a,.
One storage unit 3a stores one film F as an information recording medium held by the slide mount 7.
When the tray 3 rotates, the slide mounts 7 stored in the storage section 3a are sequentially read one by one.
The slide mount 7 moved to the upper supply position 8 and moved to the supply position 8 is taken into the reading section 4 to read information.

In the vicinity of the reading section 4, a sensor 9 for detecting the presence or absence of the slide mount 7 in the reading section 4 is provided as detecting means for detecting the presence or absence of the slide mount 7 in the storage section 3a at the supply position 8. .

The film F of the slide mount 7 sent to the reading position 10 in the reading section 4 receives light generated from a light source 12 such as a halogen lamp connected to a DC power supply 11 through a condenser lens 13, a field lens 14, an optical filter. After being transmitted through the imaging lens 16 and reflected by the reflecting mirror 17 through the imaging lens 16, the CCD 3 line sensor 18 is irradiated to read information.

The CCD3 line sensor 18 is composed of three line sensors provided with on-chip optical filters for red, green and blue. Each line sensor performs main scanning, and a unit 19 on which the CCD3 line sensor 18 is mounted. , Vertical direction to main scanning direction by stepping motor 20 (direction D in the figure)
Is moved along the rail 21 to perform sub-scanning.

Then, the information read by the CCD3 line sensor 18 is output as an analog signal to an analog processing circuit 23 via a cable 22, subjected to DC reproduction, amplification, A / D conversion, and digitally processed by a digital processing circuit 24. Is sent to the external device 26 via the interface circuit 25.

Further, a stepping motor drive circuit 27 for driving the stepping motor 20 and an interface circuit 25 are connected to the controller 28, and the sub-scanning of the CCD3 line sensor 18 is synchronized with the external device 26 by the controller 28. Is performed. The controller 28
Furthermore, a digital processing circuit 24, a DC power supply 11, an auto-changer driving circuit 6, and a film detection circuit 29 connected to the sensor 9 are connected.
The control of the output voltage of the power supply 11 and the control of the drive of the auto-changer 5 based on the information from the sensor 9 are performed, and a signal from the forward button or the reverse button 40 is input.

As shown in FIG. 2, the drive mechanism of the auto chain 5 has a lift lever 30 installed in the reading unit 4 so as to be rotatable about a shaft 31. One end 30a of the lift lever 30
Is pushed down in the direction B by the cam 32,
The other end 30b rises in the direction C in the drawing, and moves the slide mount 7 at the other end 30b to the supply position 8 so that the one end 30a
When the force of the cam 32 does not work, the spring 30 (not shown) raises the one end 30a in the direction opposite to the direction B and lowers the other end 30b. Is dropped into the other end 30b.

A cam 32 for moving the lift lever 30 up and down is interlocked with a feed mechanism for feeding the tray 3 in the direction A in the drawing.
While the cam 32 is rotated by the driving source 33, the driving source 33
The movement of the feed mechanism 34 is controlled by a plunger or the like (not shown) included in the above, and the forward rotation of the tray 3, that is, the forward movement of the slide mount 7, and the reverse rotation of the tray 3, that is, the backward movement of the slide mount 7, are performed. An output from a sensor (not shown) that detects the phase of the cam 32 is transmitted to the controller.
To the cam 32 based on this information.
The movement of the lift lever 30 and the driving of the feed mechanism 34 are controlled by the pattern of the cam 32.

Thereby, control to feed the frame in the forward or reverse direction of the tray 3, control to drop the slide mount 7 at the supply position 8 to the reading position 10, and control to raise the slide mount 7 at the reading position 10 to the supply position 8 are performed. Done. Then, the tray 3 rotates by one frame, and the slide mount 7 at the supply position 8 moves one sheet, and the slide mount 7 is sent to the reading position 10 to read information. Next, the slide mount 7 of the film F from which the information has been read is returned to the supply position 8. This series of operations corresponds to one rotation of the cam 32.

When automatic frame feeding is performed, the slide mounts 7 stored in the tray 3 are sequentially moved one by one to the reading unit 4 by sequentially performing the series of operations, and information is read.

The automatic frame feeding operation sequence of the present embodiment having the above configuration will be described with reference to the flowchart of FIG.

Automatic frame advance is started in a step, and input of the forward button or the reverse button 40 to the controller 28 is prohibited in the step.

Next, when the controller 28 is instructed to move forward by the operation unit (not shown) in the step, the tray 3 is rotated by one frame in the forward direction in the step, and is repeated by the number of frames instructed by the operation unit in the step. Then, the rotation of the tray 3 is temporarily stopped at the position of the designated piece.

Thereafter, the controller 28 determines whether a forward command is issued, and when the forward command is issued, the same operation as described above is repeated, but when the forward command is not issued in the step, the step is performed. It is determined whether a reverse command has been issued. When a reverse command is issued in the step, the tray 3 rotates one frame in the reverse direction.
As in the case of the forward movement, the process is repeated by the number of frames specified by the operation unit in the step, and the rotation of the tray 3 is temporarily stopped at the position of the specified frame.

Then, step or step 28
It is determined whether a forward or reverse command has been issued in step 2. If the forward or reverse command has been issued, the same operation as described above is repeated, but if neither the forward nor reverse command has been issued in step Enables the advance button and the reverse button 40 to be input to the controller 28, and terminates the automatic frame feed sequence in step.

FIG. 4 shows another embodiment of the present invention. For the sake of simplicity, the same parts as those of the above-described embodiment are denoted by the same reference numerals, and only the differences will be described.

In the above-described embodiment, the forward button and the reverse button 40 as the frame feed switches are constituted by hard switches, whereas in the present embodiment, the operation section display 50 is provided with forward and reverse frame feed functions. In the automatic frame advance, the forward and backward frame advance indications are turned off so that manual frame advance is prohibited. Other configurations and operations are the same as those of the above-described embodiment.

<Effect of the Invention> As described above, according to the present invention, a switch for individually rotating a storage unit for individually storing information recording media is automatically rotated, and the information is continuously read by automatically rotating the storage unit. At this time, by stopping the function of the switch, there is an effect that accurate information can always be read even if the switch is pressed by mistake during automatic frame feeding.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an information reading apparatus according to an embodiment of the present invention, FIG. 2 is a configuration diagram for driving an auto-changer, FIG. 3 is a flowchart illustrating the operation thereof, FIG.
The figure is a perspective view of an information reading apparatus according to another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... Information reading device, 3 ... Tray, 3a ... Storage part, 4 ... Reading part, 5 ... Auto changer, 7 ... Slide mount, 9
... Sensor (detection means), 28 ... Controller, 40 ... Forward button and reverse button (switch), 50 ... Operation unit display, F ... Film (information recording medium).

Claims (1)

(57) [Claims] 1. An information reading apparatus for individually reading information recording media stored in a plurality of storage sections one by one to a reading section and sequentially reading information on the information recording medium, wherein only one storage section is provided. An information reading apparatus, comprising: a switch for rotating, wherein the function of the switch is prohibited when the storage section is automatically rotated to continuously read information.