JP2992130B2 - Search device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retrieval device for transporting a long microfilm and retrieving a desired image frame by counting marks provided on the microfilm.

[0002]

2. Description of the Related Art A conventional retrieval apparatus of this type (Japanese Patent Laid-Open No.
No. 121436) includes a light source such as a halogen lamp and counting means including an optical fiber, a photoelectric conversion element, an amplifier circuit and the like. Then, while transporting the long microfilm 100 as shown in FIG. 5, the microfilm 100 is irradiated with a light source, and the mark 103 for blocking the transmitted light is counted by a counting means to obtain a desired image frame 102. Search for.

[0003] The counting is set in hardware (determined by the transport amount of the microfilm) so as to start from a counting start position Y at a distance X from the end 101 of the microfilm 100. Therefore, in order to perform accurate counting, the microfilm 100 is moved from the end 101 to the counting start position Y.
It is a necessary condition that the length up to is constant.

[0004]

However, the above-mentioned prior art has the following problems.

[0005] The leading end portion of the microfilm 100 may be bent or damaged due to a load or jam caused by an unloading mechanism during auto loading. In this case, the mark 101 is cut from the end 101 to cut the portion.
The distance to 3 becomes shorter as shown in FIG. As a result, the first mark 103 cannot be counted, and a search error occurs. On the other hand, when the microfilm 100 is shortened as shown in FIG.
In some cases, the leader tape 104 is joined to the 00 using a splice tape 105. However, not only is the joining operation itself troublesome, but if the counting start position Y and the splice tape 105 overlap, or if there is fog on the splice tape 105, a counting error occurs.

An object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to provide a search device capable of setting a counting start position to an arbitrary position from an end of a microfilm.

It is another object of the present invention to provide a search device capable of setting the counting start position based on the amount of microfilm transported.

[0008]

In order to achieve the above object, the present invention provides a mark provided on a microfilm ,
Wherein at the distal end of the leader portion of the microfilm search device having a count start position or we count counting means to start with a predetermined distance, the leader portion of the count start position wherein Ma <br/> Lee microfilm The input means for setting at an arbitrary position is provided .

Further, a measuring means for measuring the conveyance amount of the microfilm, said by the measuring means microphone
Counting start position from the tip of the film leader
Input the measured value of the transport amount up to the input means.
Then, the counting start position may be set .

[0010]

According to the present invention based on the above configuration, the counting start position is set by the input means, and the counting means starts counting marks from the counting start position.

The measuring means measures the transport amount of the microfilm, and the counting start position is set based on the measured value of the measuring means.

[0012]

Next, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic configuration diagram of a microfilm search machine to which the present invention is applied, FIG. 2A is a block diagram showing a main circuit configuration, and FIG. 2B is a plan view of the microfilm. In FIG. 2, reference numeral 1 denotes a long microfilm on which marks 51 are provided corresponding to the image frames 50. The microfilm 1 is housed in a cartridge 3 while being wound on a rewind reel 2 as shown in FIG.

A pair of plate-like glasses 4 and 5 are vertically arranged on the conveyance path 52 of the microfilm 1 so as to face each other. The glasses 4 and 5 are for bringing flatness into close contact with both sides of the microfilm 1 and are configured to move in the thickness direction by a solenoid (not shown) or the like. Reference numeral 6 denotes a take-up reel. In FIG. 2, reference numeral 1 'denotes a leader tape joined to the microfilm 1 by using a splice tape S.

Reference numeral 7 denotes an optical fiber disposed on the upper surface of the glass 5, and the optical fibers 7 are provided in a straight line at a predetermined pitch along the transport direction. The optical fiber 7 captures the transmitted light of the microfilm 1 irradiated by a light source described later, reads the count of the marks 51, and reads the size of the marks 51. Reference numeral 8 denotes a projection lens which enlarges and projects an image (image) of the microfilm 1 on a screen 14 via a reflection mirror 13.

Reference numeral 9 denotes a photoelectric conversion element such as a phototransistor for converting the transmitted light received by the optical fiber 7 into an electric signal, and 10 denotes an amplifier circuit for amplifying a minute output current input from the photoelectric conversion element 9. Reference numeral 21 denotes a mark counting circuit which outputs a mark 5 based on the output from the amplifier circuit 10, that is, the data of the detection value of the transmitted light amount and the instruction from the CPU circuit 16.
A count of 1 is performed. The optical fiber 7, the photoelectric conversion element 9, the amplifier circuit 10, the mark counting circuit 21, and the CPU circuit 16 constitute the counting means 53 of the present invention. The counting means 53 starts counting the marks 51 from the counting start position B at a predetermined distance from the end of the microfilm 1, that is, the leading end 60.

On the other hand, below the glass 4, a light source 11 such as a halogen lamp and a condenser lens 12 such as a condenser lens are provided. Reference numeral 15 denotes a carrier control circuit that controls the feeding relationship of the motors M1 and M2 that drive the rewind reel 2 and the take-up reel 6. The CPU
The circuit 16 controls a carrier control signal from the carrier control circuit 15, a mark signal from the mark counting circuit 21, and an input signal from the keyboard (input means) 18.

Reference numeral 17 denotes a switch such as a numeric keypad on a keyboard 18, and 19 denotes a display unit such as an LED or LCD.
Reference numeral 9 denotes an odometer value, an address at the time of searching for the image frame 50 of the microfilm 1, and the like. Reference numeral 20 denotes a control knob for loading and feeding the microfilm 1 by operating the control knob 20.

Prior to counting the marks 51, the control knob 20 is operated to feed the microfilm 1, and a position where the marks 51 are easily counted is selected in advance. Can be stored within. The position where counting is easy means that there is no splice tape S or fog K and the tip 60
From the head mark 51 nearest to the position which can be counted in order.

Reference numeral 22 denotes a rubber roller for an odometer.
A slit disk 23 is fixed to one end thereof, and the rubber roller 22 and the slit disk 23 rotate integrally. Reference numeral 24 denotes a photosensor which generates a pulse by rotation of the slit disk 23. The rubber roller 22, the slit disk 23, and the photo sensor 24 constitute the measuring means 25 of the present invention.

Next, the operation of the above embodiment will be described with reference to the flowchart of FIG. In searching for the microfilm 1 in FIG. 2B, first, when the control knob 20, which is a loading switch, is manually operated (n1), the CPU circuit 16 outputs an auto-loading signal to the carrier control circuit 15. In loading (n2), the leading end of the microfilm 1 in the cartridge 3 is taken out by a taking-out mechanism (not shown), and the rubber roller 22 is taken out.
Is rotated to pass between the glasses 4 and 5, and the motor M
2 is automatically wound on a take-up reel 6 driven by the motor 2.

When the winding is completed, a pulse signal is generated by the rotation of the slit disk 23 and the photo sensor 24, and
The data is taken into the U circuit 16 for the data of the transport amount of the microfilm 1. When the winding is completed, the transport amount from the distal end portion 60 to the position corresponding to the light receiving portion of the optical fiber 7 is A. However, the fog K and the splice tape S exist between this position and the leading mark 51, and if counting is performed as it is, the fog K and the splice tape S may be counted as a mark.

Then, the control knob 2 is manually operated.
0 to feed the microfilm 1 (n
3), the counting start position B is determined immediately before the head mark 51. When the counting start position B is determined (n4), the transport of the microfilm 1 is stopped by operating the control knob 20. Then, the value of the transport amount data displayed on the display unit 19 is displayed on the switch 18 such as a numeric keypad on the keyboard 18.
At 7, the transfer amount Z (FIG. 2C) until the start of counting is input (n 5).

Control knob 20 or keyboard 18
Operation of upper rewind key (not shown) (n6) causes C
The rewind motor M1 receiving the signal from the PU circuit 16 operates, the microfilm 1 is rewound into the cartridge 3, and the rewind is completed and stopped (n7).

Then, the position of the frame to be searched is determined by the keyboard 1
An input is made using the numeric keypad 17 on the screen 8 (n8). When a search key (not shown) of the keyboard 18 is pressed to perform an auto-loading operation indicated by n2 (n9), the microfilm 1 is fed to the counting start position B in the memory of the CPU circuit 16, and the mark counting is started ( n10).

In this embodiment, a plurality of optical fibers 7 are arranged at a certain interval, the mark 51 is detected by the optical fiber 7 which is blocked by the mark 51 on the microfilm 1 (n11), and a mark counting circuit is obtained from the detection signal. 21 and the CPU circuit 16 to search for the designated number of frames (n1
2). Then, a stop signal is sent from the CPU circuit 16 to the carrier control circuit 15 in the search number frame, and the motor M1,
M2 is controlled to stop at the search number image frame irradiation position (n13). The image on the microfilm 1 is enlarged by the projection lens 8, the optical path is bent by the reflection mirror 13, and is projected on the screen 14.

The display section 19 on the keyboard 18 displays the searched image frame number (n14). Thereafter, a normal search operation (n15) is performed. When the search operation is completed and a rewind key (not shown) on the keyboard 18 is operated (n16), a rewind signal is issued to the carrier control circuit 15 via the CPU circuit 16,
The rewind motor M1 is driven. Then, the microfilm 1 is rewound into the cartridge 3 and rewinded (n1
7) The operation ends.

As described above, in the present invention, the counting start position B can be set at an arbitrary position from the leading end 60 of the microfilm 1 by operating the keyboard 18. Therefore, the microfilm 1 and the leader tape 1 '
Can be accurately counted even if there is a difference in density or fog K on the leader tape 1 '.

Further, even when the length of the leader tape 1 'is short as shown in FIG.
By setting the counting start position B between the mark 51 and the mark 51, it is not necessary to perform the counting correction, and the counting of the counting mark 51 can be performed accurately. Of course, as shown in FIG. 2 (D), the counting can be performed without any trouble for the ordinary microfilm 1.

FIG. 4 is a block diagram as a second embodiment. In the first embodiment, since the display unit for searching and the display unit for the transport amount of the microfilm are also used, it is necessary to switch the display. Therefore, by providing the display unit 27 dedicated to the transport amount of the microfilm, display switching is not required, and operability at the time of data input is improved.

Reference numeral 26 denotes a switch exclusively for inputting a counting start position. The control film 20 is used to feed the microfilm 1, stop the conveyance of the microfilm 1 before the mark 51, and turn on the input switch 26. , The counting start position B is set, and a normal search operation can be performed thereafter. By using the input switch 26, most microfilm marks can be counted without restricting the reader portion of the microfilm 1, and operability is improved.

[0031]

As described above, by arbitrarily setting the counting start position for mark counting, it is possible to accurately and easily count marks even when the leader tape is short or the leader portion has fog. it can.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a first embodiment in which the present invention is applied to a microfilm search machine.

FIG. 2A is a block diagram showing a main circuit configuration of the first embodiment, and FIGS. 2B, 2C, and 2D are schematic plan views of microfilms searched in the embodiment.

FIG. 3 is a flowchart showing the operation of the first embodiment.

FIG. 4 is a block diagram showing a configuration of a second embodiment.

FIGS. 5A, 5B, and 5C are plan views of a microfilm used in a conventional search device.

[Explanation of symbols]

 1 Microfilm 18 Keyboard (input means) 25 Measuring means 53 Counting means 60 Tip of microfilm

Claims (2)

(57) [Claims] 1. A mark provided on a microfilm ,
Wherein at the distal end of the leader portion of the microfilm search device having a count start position or we count counting means to start with a predetermined distance, the leader portion of the count start position said microfilm
And characterized by providing an input means for setting an arbitrary position
Search device to. Wherein a measuring means for measuring the conveyance amount of the microfilm, said by the measuring means micro Fi
From the tip of the LUM leader to the counting start position.
The search device according to claim 1 , wherein the counting start position is set by inputting a measured value of the transport amount to the input unit .