JPH0425702Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is an overhead projector (hereinafter referred to as
It's called OHP. ) Regarding the explanation device that corresponds to the contents written on the film used in the above, it records audio corresponding to the contents written on the OHP film, and also moves a pointer as a pointer to indicate the written place on the OHP film in the X and Y axis directions. It relates to equipment that moves to

(Prior art) Conventional explanations related to the contents of OHP films are given either by the presenter speaking directly in response to the contents projected on the OHP film on a screen, or by recording the contents corresponding to the OHP film on an audio tape. and while playing this recording tape, use a pointing stick to
It was pointing to the part I wanted to emphasize on the OHP film.

(Problem that the invention aims to solve) When explaining the OHP film presentation, the presenter pointed at the screen with a pointer while making the presentation or depending on the playback status of the audio tape.
If the person in charge of the presentation was not familiar with the content of the presentation, the presentation could not be carried out smoothly and the subsequent proceedings could be hindered.

(Means for solving the problems) This invention was created in view of the above problems.
A magnetic tape magnetic recording/reproducing device having at least five recording tracks, a recording means for recording audio on one track of the magnetic tape, and a manuscript displaying content corresponding to the audio information recorded by the recording means. An OHP device with an information recording/reproducing device comprising an OHP on which an OHP is placed and irradiated with light, a pair of bases movable in one coordinate axis direction of a document placement surface of the OHP device; a first pulse motor that moves in one coordinate axis direction; a second pulse motor that is attached to one of the pair of bases; an OHP pointer that moves by rotation of the second pulse motor; A first pulse motor connected to each of the first and second pulse motors.
and a second encoder.

(Function) This invention records the presenter's voice and the position information of the pointer as the presentation content progresses on a magnetic tape, and then reproduces the recorded voice and position information. The position of the pointer moves as the content progresses.

(Example) The present invention will be described below with reference to the accompanying drawings. FIG. 1 is a conceptual diagram of a system configuration explaining the present invention. The OHP device 1 has a light source etc. (not shown) in the main body 2.
is built in, and a lens 3 is fitted into the top surface. Light from a light source (not shown) passes through a lens 3, is reflected by a mirror 6 held by arms 5, 5 extending from support rods 4, 4, and is irradiated onto a screen (not shown). On the upper side of the main body 2, there is a Y-axis pulse motor 7 and a Y-axis motor connected to the Y-axis pulse motor 7.
An axis encoder 8 is arranged. Also, this Y
Shafts 9 and 10 are connected to protrude from the shafts of the shaft pulse motor 7 and the Y-axis encoder 8, respectively.The shafts 9 and 10 are rotatably supported by appropriate means, and pulleys 11, 12 is attached. A shaft 14 having a pulley 13 and a pulley (not shown) attached to both ends is rotatably supported on the side opposite to the side of the main body 2 where the Y-axis pulse motor 7 and the Y-axis encoder 8 are arranged. Pulley 13, pulley 12
and a pulley (not shown), each belt 1
5 and 16 are stretched. Base plates 17 and 18 are locked to the belts 15 and 16, and are configured to move in the same direction as the belts 15 and 16 are moved by rotation of the Y-axis pulse motor 7. An X-axis pulse motor 19 and an X-axis encoder 20 are connected and arranged on one base plate 17, a pulley 21 is attached to the shaft of the X-axis pulse motor 19, and a pulley 22 is attached to the other base plate 18. It is arranged so that it can rotate. A belt 23 is stretched between the pulleys 21 and 22, and a pointer 24 is fixed to the belt 23. Main body 2 of OHP device 1
The magnetic recording/reproducing device 30 is electrically connected to the magnetic recording device 30 by a signal cable 25, and has a drive device for a magnetic tape 31, an operation button 32, and a speaker 33, like a normal recording device, and is connected to a recording microphone 34. There is.

Next, the electrical system will be explained with reference to FIG. On the recording side of the schematically illustrated magnetic recording/reproducing device 30, a signal from the X-axis encoder 20 is applied to a one-shot circuit 40 and a rotation direction detection circuit 42.
The signal of the Y-axis encoder 8 is one-shot circuit 41
and are applied to the rotation direction detection circuit 42, and the rectangular wave-to-analog wave presence/absence conversion circuits 43, 44, 4, respectively.
5 and 46 on the magnetic tape 31.
Here, rectangular wave-analog wave presence/absence conversion paths 43, 4
4, 45, 46 are analog gates 431, 441, 451, to which an analog wave from the oscillator 56 is applied, and which output the analog wave from the oscillator 56 in response to a pulse from the one shot circuit 40, 41 or the rotation direction detection circuit 42; 461 and each analog gate 431, 441, 451, 461
Amplifiers 432, 442, 4 that amplify the output signal of
It consists of 52,462. Furthermore, the sound from the recording microphone 34 is recorded onto the magnetic tape 31. (See Figure 3) The reproduction side of the magnetic recording device 30 has a magnetic tape 31.
The analog signal of each track recorded in the analog wave/pulse wave conversion circuit 50, 5
1. Analog wave presence/absence/square wave conversion circuit 52, 53
The signal is applied to the driver 54 of the X-axis motor 19 and the driver 55 of the Y-axis motor 7, and the rotation of the X-axis motor 19 and the Y-axis motor 7 is controlled by the control signals of the drivers 54 and 55 (see Fig. 4). be done.

Analog wave presence/absence/pulse wave conversion circuit 50, 51
The input portions of are amplifiers 501 and 511, and the outputs of these amplifiers 501 and 511 are respectively connected to comparators 50.
2,512 and this comparator 502,51
Pulses are generated from one shots 503 and 513 by the output of 2. In addition, the input portion of the analog wave presence/rectangular wave conversion circuits 52 and 53 is connected to an amplifier 52.
1,531, the outputs of the amplifiers 521, 531 are applied to the comparators 522, 532, respectively, and the output signals of the comparators 522, 532 are
Signals are output by retriggerable one shots 523 and 533 that output TTL level High signals.

To explain the operation, the pointer 24 on the top surface of the main body 2 of the OHP device 1 is positioned at the lower left corner as a reference position, and the OHP film used for the presentation is placed on the top surface of the main body 2. Next, the magnetic recording/reproducing device 30
By operating the operation button 32, the magnetic tape 31 is rotated in a recording state. In this state, the explainer speaks into the microphone 34 according to the contents of the OHP film (not shown), and the magnetic tape 31 has a third
It is recorded on track 5 in the figure. When the pointer 24 is moved to a desired position while the magnetic tape 31 is recording, the Y-axis encoder 8 and the X-axis encoder 20 rotate due to the movement of the belts 15, 16, and 23. one-shot circuits 40, 41 and rotation direction detection circuit 42, respectively.
One-shot circuits 40, 4 to which pulses are applied
1. The X rotation direction signal and Y rotation direction signal of the rotation detection circuit are each rectangular waveform - analog wave presence conversion circuit 4
The signal is recorded on the magnetic tape 31 as an analog signal via signals 3, 44, 45, and 46. (See Figure 3)
Further movements of the pointer 24 are sequentially recorded on the magnetic tape, and at the end of the explanation, the pointer 24 is returned to the lower left corner of the main body 2 of the OHP device 1, which was the previous reference position, and the operation button 32 is operated to end the recording.

The above operations are repeated for each OHP film, and records are sequentially recorded corresponding to the OHP film to be used for the presentation.

To explain how to reproduce a signal recorded as described above, the pointer 24 on the top surface of the main body 2 of the OHP device 1 is positioned at the reference position at the lower left corner of the top surface of the main body 2. The first OHP film to be targeted is placed on the main body 2, and a magnetic tape 31 is created on which explanations corresponding to the contents of this OHP film and position information of the X and Y-axis pulse motors are recorded. Set it on the device 30 and press the operation button 32.
The magnetic tape rotates when you operate the playback button.
Recorded information for each track is reproduced. The audio signal (track 5 in Figure 3) is sent directly to the speaker 33.
and is recognized as voice. Track 1
The signal from track 2 is sent to the input terminal of the driver 54 of the X-axis motor 19 as pulse A by the analog-to-pulse wave conversion circuit 50, and the signal from track 2 is sent to the input terminal of the driver 54 of the Driver 55 of Y-axis motor 7
is applied to the input terminal of Also, tracks 3 and 4
These signals are applied as signals C and D from the analog-to-rectangular wave conversion circuits 52 and 53 to the rotational direction input terminals of the drivers 54 and 55. Here, magnetic tape 3
The analog signal recorded in 1 is converted into TTL signals A, B, C, and D, so that the signals A and B give the rotation speed of the pulse motors 19 and 7,
Signals C and D provide rotational direction signals for pulse motors 19 and 7. (See Figure 4) Pulse motor 19,
7 rotates in a predetermined direction, and belts 15, 16, 23
moves, and the pointer 24 moves to a desired position on the OHP film. The signals of each track recorded on the magnetic tape 31 are played back, and the voice explanation and the pointer 24 are linked, and when the explanation is finished, the pointer 24 is turned off.
Move to the lower left corner of the top surface of main body 2 of OHP device 1 and then
We will be on standby to support OHP film. By repeating this operation for each OHP film, a presentation can be made using a series of OHP films.

(Effect of the invention) This invention has the above structure, so
Even operators who are not familiar with the content of OHP film presentations can easily make presentations.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Fig. 1 is a conceptual diagram of the system configuration, Fig. 2 is an electrical system configuration diagram, Fig. 3 is a recording state diagram of a magnetic tape, and Fig. 4 is a diagram showing a pulse motor driver. as the applied signal of
FIG. 3 is a TTL level signal waveform diagram. 1... OHP device, 2... Main body, 7... Y-axis pulse motor, 8... Y-axis encoder, 15, 1
6, 23...Belt, 19...X-axis pulse motor, 20...X-axis encoder, 24...Pointer, 3
0... Magnetic recording and reproducing device, 31... Magnetic tape,
34...Mike.

Claims (1)

[Claims for Utility Model Registration] A magnetic tape magnetic recording/reproducing device having at least five recording tracks, a recording means for recording sound on one track of the magnetic tape, and a recording means for recording sound information recorded by the recording means. In an OHP device with an information recording and reproducing device, which comprises an OHP on which a document displaying corresponding content is placed and irradiated with light, a pair of bases movable in one coordinate axis direction of the document placement surface of the OHP device are provided. a base, a first pulse motor that moves the pair of bases in one coordinate axis direction, a second pulse motor attached to one of the pair of bases, and rotation of the second pulse motor; A moving OHP pointer and a first pulse motor connected to each of the first and second pulse motors.
and a second encoder.