JP2000050110A - Document presenting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a document presenting device without reflection of the vicinity of a device except for document data even in a state where a camera is close to the end of a table face. SOLUTION: One camera arm 4 which can be folded/stored is raised from a table main body part 1 having a table face 2 where document data and the like are loaded. A camera block 10 having a camera part 11 in a direction where the table face is projected is supported by the tip part of the camera arm 4. A tilt mechanism part 12 operating the camera part 11 in a tilt direction by motor driving and a pan mechanism part 13 operating in a pan direction are installed in the camera block 10. A remote control reception part 94 is installed at the upper end part of the camera arm 4 and the pan/tilt operation of the camera part 11 can be executed by a remote operation from a remote control transmission part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document for making a document (material such as a document) or a three-dimensional object into an image by using a CCD camera (hereinafter, simply referred to as a camera unit) and performing a presentation on a screen or the like. More specifically, with regard to the presentation device, the camera is capable of performing a pan / tilt operation by electric power so that a document material or the like can be quickly and easily presented to every corner without moving from a table surface. is there.

[0002]

2. Description of the Related Art Conventionally, a document presentation device as described above,
In general, a document material on a table is moved by hand, or a camera head is manually operated, and a material portion to be projected is presented on a screen or the like in correspondence with the camera head.

However, recently, a method of presenting document materials by electrically operating a camera head has been proposed, for example, as a material presenting apparatus as shown in FIG.

FIG. 22 is an external view of the document presentation device, and its functions will be described. Reference numeral 201 denotes a table body having a table surface 202 on which document materials and the like are placed.
The arch-shaped frame 203 is movable along a rail (not shown) of the table body 201 so as to straddle the frame 02. Then, the camera 204 is mounted on the arched frame 203, and the subject lens 20 of the camera 204 is
5 is arranged so as to reflect the table surface 202, and the camera 2
04 is movable along the horizontal frame 203a.

That is, the camera 204 is moved to the frame 203
By moving the frame 204 along the table body 202 in the X-axis direction, the frame 203 can be moved along the table body 201 to move the camera 204 with respect to the table surface 202. The movement in the Y-axis direction can be performed.

As described above, the above-described document presentation device operates the operation panel 206 or a mouse (not shown) on the document document placed on the table surface 202 to move the camera 204 in the X / Y-axis directions. This makes it possible to present a material portion to be projected as a wide-angle image or an enlarged image, for example, on a screen of a conference room or the like, and to capture the image into a computer or the like. .

[0007]

However, FIG.
In the document presentation device shown in FIG.
02, that is, when the document material is displayed as a wide-angle image while the camera 204 has moved to the end of the horizontal frame 203a, the frame 2
There is a problem that the part 03 is also reflected. This poses a problem that the projected image is unsightly and unsightly.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and has as its object to obtain a document presenting device that does not reflect anything other than document documents even when the camera is close to the edge of the table surface. And

[0009]

In order to achieve the above-mentioned object, a document presenting apparatus according to the present invention is a device capable of being inverted from a table body having a table surface on which document materials and the like are placed.
The camera arm of the book is started up, the camera unit is attached to the end of the camera arm so as to reflect the table surface, and the camera unit is provided with a pan / tilt mechanism for performing a pan / tilt operation.

[0010] With this configuration, in the pan / tilt operation of the camera unit, the camera arm can be arranged at the blind spot position of the camera unit where the camera arm rotates, and the image of the camera unit without reflection of the camera arm can be obtained. Can be made possible.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a document presentation device according to the present invention.

FIG. 1 is a perspective view of the entire appearance of the document presentation device. The table body of the document presentation device is indicated by reference numeral 1,
A table surface 2 on which document materials and the like are placed is provided on the upper surface of the table body 1. The table surface 2 is made of a translucent member such as glass in this example, and a back lamp (not shown) arranged in the table body 1. Table surface 2 by light
Is illuminated from the back side to illuminate document materials and the like.

A base end 5 of a camera arm 4 is supported on the cover frame 3 provided on the back side of the table main body 1 in the cover frame 3, and a position where the camera arm 4 stands up in an inclined manner and a table surface. 2 and can be turned to a position where it is folded and stored. The mechanism for attaching the camera arm 4 will be described later.

At the end of the camera arm 4, there is provided a horizontal camera support 4a.
Is mounted with a camera block 10. The camera block 10 is oriented such that the table surface 2 is reflected on the camera block 10 and is arranged at the center of the table surface.
And a tilt mechanism unit 12 that enables the camera unit 11 to be tilted along the Y-axis direction of the table surface 2. Similarly, a tilt unit that allows the camera unit 11 to be panned along the X-axis direction of the table surface 2. The pan mechanism 13 is supported by the camera support 4a.

The details of the camera block 10 will now be described with reference to FIGS.
This will be described with reference to FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG. 1, FIG. 3 is a side cross-sectional view as viewed from the direction of arrow B in FIG. 2, FIG. 4 is a side cross-sectional view as viewed from the direction of arrow C in FIG. 3 is a front sectional view of the same seen from the direction of arrow D in FIG.

The camera section 11 includes camera covers 14a, 14
b and is arranged with the object lens 15 facing downward. In this example, a close-up lens is used as the subject lens 15, and the subject lens 15 can be moved in and out of the camera unit 11. Further, the camera section 11 has a zoom function capable of wide-angle (tele) and telephoto (wide) and also has an auto-focus function. The above-described camera section 11 is supported by the tilt mechanism section 12.

The tilt mechanism 12 is configured as follows. At the center of the camera unit 11, tilt shafts 16 and 17 are provided on the left and right in a uniaxial manner, and both tilt shafts 16 and 17 are rotatably supported by a tilt chassis 18.

One tilt shaft 16 is integrally formed with a drum shaft 20 having a flange 19, and the drum shaft 20 is fixed to the camera unit 11 with screws. Further, a worm wheel 22 secured to the drum shaft 20 by a flange plate 21 is slidably supported. And
Wave washer 2 between worm wheel 22 and flange 19
3 are frictionally engaged with each other to form a clutch mechanism on the worm wheel 22. The worm wheel 22 meshes with the worm gear 25 of the transmission gear 24, and the transmission gear 24 meshes with the output gear 27 of a DC motor 26 which is a geared motor for tilt drive. The transmission gear 24, the worm gear 25, the DC motor 26, and the output gear 27 are held by the tilt chassis 18 and are fixed to the outside of the tilt chassis 18 with screws 28.
9, the worm wheel 22 is covered.

A fan-shaped tilt rotation angle detection gear 30 is attached to the other tilt shaft 17. A potentiometer gear 31 meshes with the tilt rotation angle detection gear 30, and a potentiometer 3 is attached to a gear shaft of the potentiometer gear 31.
2 is directly connected. A potentiometer 31 is covered together with a tilt rotation angle detection gear 30 by a tilt cover 34 fixed to the outside of the tilt chassis 18 with screws 33.

The tilt mechanism 12 configured as described above is
When the DC motor 26 is driven, the worm wheel 2 is transmitted from the output gear 27 via the transmission gear 24 and the worm gear 25.
2 is rotated, and the drum shaft 2 is further rotated from the worm wheel 22 through a clutch mechanism by a wave washer 23.
0 is driven to rotate, whereby the tilt shafts 16 and 17 are rotated.
Is used as a rotation fulcrum axis, and the camera unit 11 performs a tilt operation. At the same time, the potentiometer gear 31 is rotated from the tilt rotation angle detection gear 30 in conjunction with the tilt operation of the camera unit 11, so that the tilt rotation angle of the camera unit 11 can be detected by the potentiometer 32.

As shown in FIG. 3, when the camera section 11 is rotated in the Y-axis direction within a range of, for example, 20 degrees with respect to the table surface 2 as shown in FIG. , 14b come into contact with stoppers 36a, 36b of the cover 35 attached to the tilt chassis 18 and stop. Thus, the camera unit 11
As shown in FIG. 6, the table surface 2
Area from the upper end to the lower end can be projected.

Thus, the camera section 11 having the above-described tilt mechanism section 12 is held by the pan mechanism section 13.

The pan mechanism 13 is configured as follows. The pan chassis is denoted by reference numeral 37, and the pan chassis 37
The pan shaft 40 is rotatably supported by a bearing cylinder 39 fixed with screws 38, and the tilt chassis 18 is fixed to the shaft end of the pan shaft 40 protruding from the pan chassis 37 with screws 41.

A worm wheel 43 secured to the pan shaft 40 by a flange plate 42 is slidably supported. A wave washer 45 is pressed between the worm wheel 43 and a flange 44 provided on the pan shaft 40. The worm wheel 43 constitutes a clutch mechanism. The worm wheel 43 includes a transmission gear 46.
The worm gear 47 is meshed with the transmission gear 46, and the output gear 49 of the DC motor 48 composed of a geared motor for pan driving is meshed with the transmission gear 46.

A pan rotation angle detection gear 50 is formed on the pan shaft 40, and a potentiometer 51 meshes with the pan rotation angle detection gear 50, and a potentiometer 52 is directly connected to the gear shaft of the potentiometer 51. The above-mentioned pan mechanism section 13 is covered with a pan cover 53.

The pan mechanism 13 configured as described above has a D
When the C motor 48 is driven, the worm wheel 43 is output from the output gear 49 via the transmission gear 46 and the worm gear 47.
Is further rotated, and the pan shaft 40 is further rotationally driven from the worm wheel 43 via a clutch mechanism by the wave washer 45. Thus, the panning operation of the camera unit 11 is performed together with the tilt chassis 18 around the pan axis 40 as the rotation center. At the same time, when the potentiometer 51 meshing with the pan rotation angle detection gear 50 of the pan shaft 40 is rotated, the pan rotation angle of the camera unit 11 can be detected by the potentiometer 52.

The pan rotation angle of the camera unit 11 is the table surface 2
Is rotated in the X-axis direction by, for example, a range of 30 °, and the pan operation of the camera unit 11 causes the area from the right end to the left end of the table surface 2 to be changed as shown in FIG. Be able to project.

The tilt / pan operation of the camera unit 11 is performed by the tilt DC motor 26 and the pan DC motor 48 described above.
In addition to the motor-driven operation using the as a drive source, the tilt / pan operation can also be performed manually.

That is, for example, in the tilt mechanism section 12 of the camera section 11, the driving torque of the tilt DC motor 26 is transmitted from the worm gear 25 to the worm wheel 22, and the tilt operation of the camera section 11 is performed. Even if the camera unit 11 is manually rotated in the tilt direction, turning the worm gear 25 from the worm wheel 22 is not possible because the gear meshing friction resistance is large.
And the worm gear 25 remain stopped. Therefore, when the camera section 11 is manually tilted, the clutch mechanism is slipped, and the camera section 11 can be rotated to a predetermined tilt angle.

Similarly, even if the camera unit 11 is manually rotated in the panning direction, the worm wheel 43 moves to the worm gear 47.
Therefore, the camera unit 11 can slip the clutch mechanism, and can rotate the camera unit 11 to a predetermined pan angle.

Further, by employing the above-described clutch mechanism, it is possible to prevent the gears of the tilt mechanism section 12 and the pan mechanism section 13 from being damaged when the camera section 11 is manually operated.

The camera unit 11 performs a so-called swing operation in the tilt direction with the tilt shafts 16 and 17 as pivot points, and performs a swing operation in the pan direction with the pan shaft 40 as a pivot point. Therefore, there is a problem that the focus is shifted with respect to the table surface 2 or image distortion occurs. However, such a problem can be solved by providing the camera unit 11 with an autofocus function. The above-mentioned problem is solved by arranging the camera section 11 at a higher camera position by the camera arm 4 with respect to 2.

The camera block 10 constructed as described above is manually flipped up by 90 ° with respect to the camera support 4a of the camera arm 4 (hereinafter, referred to as flip-up), and the subject lens 15 of the camera Is provided with a flip-up mechanism 54 that can be turned horizontally and stopped.

The mode of use when the camera block 10 is flipped up is applied to, for example, enlarging and projecting a material stuck on a wall surface of a conference room or the like, or projecting a person or a landscape.

The structure of the flip-up mechanism 54 will be described. A shaft 56 is fixed to a frame 55 of the camera support 4a, and a side chassis 37a of a pan chassis 37 is supported by the shaft 56. A flange plate 5 is provided at the tip of the shaft body 56 protruding into the side chassis 37a.
7 are locked by a key 56a so as not to rotate, and are fixed to the shaft body 56 with screws 58. The flange plate 57 and the side chassis 37
A slip ring 59 is crimped between a. Thus, the camera block 10 is rotatable around the shaft 56 by receiving a predetermined frictional force.

The flange plate 57 is formed with two stopper pieces 60a and 60b to oppose each other. A stopper 61 formed by bending the side chassis 37a can be engaged with the stopper pieces 60a and 60b. That is, in a state in which the camera unit 11 of the camera block 10 faces downward on the table surface 2 side (hereinafter, this state is referred to as a document direction), the stopper 61 abuts against one of the stopper pieces 60a as shown in FIG. Holds the downward state. Then, when the camera block 10 is flip-up-operated, as shown in FIG.
Comes into contact with the other stopper 60b, and the camera unit 11
Is held in a horizontal orientation.

A flip-up detection switch 62 is arranged on the side chassis 37a corresponding to the above-mentioned flange plate 57. The flip-up detection switch 62 is turned off when the camera block 10 is in the document direction, and when the camera block 10 is flipped up, the switch lever 63 of the switch 62 rides on the other stopper piece 60b and is turned on. Can be switched so that

In the flip-up state of the camera block 10, as shown in FIG. 9, the camera section 11 is electrically rotated in the horizontal direction within a tilt rotation angle range of 20 ° (full rotation angle of 40 °). Further, as shown in FIG. 10, the pan rotation angle can be electrically rotated within a range of 100 ° (a full rotation angle of 200 °), and the pan rotation angle is manually set to 150 °. (Rotation angle of 300 ° in full angle).

In the operation state in which the camera block 10 is flipped up, since the focal length between the camera section and the subject becomes almost infinite, the subject lens 15 which is a close-up lens is removed from the camera section.

The configuration of the base end 5 of the camera arm 4 holding the camera block 10 will be described with reference to FIG.

The base end 5 of the camera arm 4 is directly connected to a shaft 71 supported by a bearing plate 70 in the cover frame 3, and the shaft 71 is fixed by a brake shoe 73 urged by a coil spring 72. It is made rotatable by receiving the frictional force. A weight 74 is attached to the shaft 71 by a mounting plate 74a, so that the weight of the camera arm 4 and the camera block 10 and the weight 74 can be balanced left and right with the shaft 71 as a fulcrum. As a result, the force required to manually invert the camera arm 4 can be reduced with a small operating force.

The shaft portion 71 is provided with a lock plate 75 which can lock the camera arm 4 at that position when the camera arm 4 is folded on the table surface 2. That is, the lock plate 75 is urged toward the shaft 71 by a leaf spring (not shown) with the fulcrum 76 as a fulcrum, and the operation knob 77 at the tip of the lock plate 75 protrudes from the cover frame 3.
According to this, when the camera arm 4 is folded on the table surface 2, the stopper pin 78 provided on the shaft 71 that rotates with this is engaged with the lock hole 79 of the lock plate 75, and Can be locked in the folded state. On the other hand, when the camera arm 4 is to be erected, the lock is released by retracting the lock hole 79 from the stopper pin 78 by depressing the operation knob 77,
The camera arm 4 can be turned upright.

When the camera arm 4 is folded, the push pin 80 provided on the shaft 71 turns on the contact piece 82 of the arm switch 81, thereby turning off the power to the camera block 10. I can do it.

Further, in FIG. 1, the table body 1 is provided with an image display monitor 83 which allows the user to view the image projected by the camera unit 11 at hand. Also, a pair of illumination lamps 84, 84 for illuminating the table surface 2 from outside.
In addition, a handle 85 for carrying the document presentation device of the present invention is provided on the side of the table main body 1.

In the camera block 10 configured as described above, an operation panel 86 for performing a pan / tilt operation, a zoom operation, and the like of the camera unit 11 is disposed on the table main unit 1. A plan view of the operation panel 86 is shown in FIG.

The operation panel 86 has a lever switch 87 for moving the camera angle of the camera unit 11 in the panning direction as the X-axis direction, the tilting direction as the Y-axis direction, and an oblique direction between the X-axis and the Y-axis. A zoom switch 88 for selecting a camera image between a wide side (wide angle) and a tele side (telephoto); a home switch 89 for returning the camera unit 11 from a predetermined camera angle to a center position;
An indicator lamp 90a, 90b, which is an LED or the like, which is displayed by turning on the switch 62 to determine whether the camera unit 11 is in the document position or the flip-up position, and a set switch 91; A display lamp 91a composed of
A first preset switch 92a capable of preset memory of the camera unit 11 at a predetermined camera angle
And a second preset switch 92b, and a lamp switch 93 for turning on / off the back lamp of the table surface 2 and the illumination lamp 84. The above-described preset memory function can be similarly performed when the camera unit 11 is in the document position and the flip-up position.

On the other hand, the pan / tilt operation and the zoom operation of the camera unit 11 can be remotely controlled by a remote controller using infrared rays without operating the operation panel 86.

The remote control receiving section is indicated by reference numeral 94 and is mounted on the upper surface of the camera supporting section 4a in order to receive infrared signals from the periphery without any trouble. Hereinafter, the mounting structure of the remote control receiver 94 will be described with reference to FIGS.

The remote control receiving section 94 has a sensor cover 95.
A substrate 96 is fixed therein, and a remote control light receiving element 97 is supported on the substrate 96. This remote control light receiving element 9
Numeral 7 has a directional angle at which an infrared signal is received from an angle range of about 60 °. The sensor cover 95 is attached to the camera support 4.
The cover 95 is rotatably inserted into a support hole 98, and a flange 95a formed at a lower portion of the cover 95 is held on a frame 99 arranged in the camera support 4a.

The flange portion 9 of the sensor cover 95
Wave washer 100 is provided between 5a and camera support 4a.
, The cover 95 is rotatable with a predetermined frictional force. Here, in the rotation operation, the sensor cover 95 is configured such that the convex portion 101 formed on the back surface of the flange portion 95 a has a stopper 10 formed on a part of the hole 99 a of the frame 99.
2 so that the sensor cover 95 is turned 150 ° in the left and right direction (3 ° in total).
(A rotation angle of 00 °). That is, since the remote control light receiving element 97 has a directivity angle of 60 °, the infrared signal can be received by the remote control light receiving element 97 from all directions of 360 ° by moving the sensor cover 95 in various directions. It has become. Reference numeral 103 denotes a display mark displayed on the sensor cover 95 so that the direction of the remote control light receiving element 97 can be recognized from the outside, and reference numeral 104 denotes a non-slip projection when the sensor cover 95 is held and rotated.

FIG. 15 shows a remote control transmitter 104 for remotely controlling an infrared signal to the remote control receiving section 94 described above.
The remote control transmitter 104 includes the operation panel 86 described above.
Lever switch 10 for operating the camera angle in the same manner as
5, zoom switch 106, home switch 107, set switch 108, first preset switch 109
a and a second preset switch 109b.

The remote control transmitter 104 is provided with a changeover switch 110 for a bit switch. This bit switch is provided on the back surface of the table main body 1 of the document presenting apparatus.

The bit switch 111 prevents the operation of another material presenting device other than the material presenting device to be operated by the remote control transmitter 104 when there are a plurality of material presenting devices. The bit switch 111 is provided with four switches 1 1 a to 1 1 d of bit 1 to bit 4 which respectively perform on / off operations.

The bit 1 switch 111a is set so that the operation angle of the camera angle by the operation panel 86 can be moved when the bit 1 switch is ON, and cannot be moved by the operation panel 86 when the bit 1 switch 111a is OFF.

The bit 2 switch 111b is set to be capable of moving the camera angle in the forward direction by the operation panel 86 in the on state, and is set to be capable of moving the camera angle in the reverse direction by the operation panel 86 in the off state.

The bit 3 switch 111c is set so that reception by the remote control transmitter 104 is enabled in the ON state.
In the off state, reception by the remote control transmitter 104 is set to be disabled.

The bit 4 switch 111d is set so that remote control transmission is possible when the changeover switch 110 of the remote control transmitter 104 is "1" when the switch is on, and remote control transmission is disabled when the change switch 110 is "2". 1
The remote control transmission is disabled when the changeover switch 110 is “1”, and the remote control transmission is enabled when the changeover switch 110 is “2”.

In the document presentation device according to the present invention, in the pan / tilt operation of the camera unit 11, the operation speed of the camera unit 11 is increased when the zoom state is wide, and the operation speed of the camera unit 11 is decreased when the zoom state is telephoto. By doing so, the apparent video speed is kept constant. This is performed by variably controlling the voltage applied to the tilt DC motor 26 and the pan DC motor 48. FIG. 17 shows the relationship between the zoom magnification and the voltage applied to the motor.

According to this, as an example, the zoom magnification is changed from the wide side (zero magnification, zoom value: 0000) to the tele side (1 zoom).
In a state where the zoom magnification is set to 2 times and the zoom value is 3FFF), when the zoom magnification is 0 to 6 times, the motor applied voltage is 6.5.
At 4v (camera operation speed is 6.61 degrees / sec) and the zoom magnification is 6 to 9 times, the motor applied voltage is 6.04.
v (the operation speed of the camera is 6.17 degrees / sec), and when the zoom magnification is 6 to 12 times, the motor applied voltage is 5.45 v (the operation speed of the camera is 5.48 degrees / sec).
) Makes it possible to make the apparent video speed constant between wide and tele.

Further, in the document presentation device according to the present invention, when the camera section 11 moves to the predetermined camera angle position stored in the preset memory, the camera section 11 moves faster than a normal moving speed and quickly reaches the position stored in the preset memory. It has such a function. Thereby, the presentation of the document can be efficiently performed.

FIG. 18 is a control block diagram of the document presentation device according to the present invention, and the operation procedure will be described with reference to a flowchart. Note that the same reference numerals are given to the same parts as the mechanical units in the block diagram and the respective mechanical units described above, and the description will be made.

[Camera Angle Operation by Lever Switch 87 (Refer to Flowchart of FIG. 19)] First, in step S100, the main CPU 112 determines whether or not the lever switch 87 is turned on. If the switch is turned on, the process proceeds to step S101. If the switch is not turned on in the pan direction, a pulse modulation signal (PWM) is output from the main CPU 112 to the tilt motor drive circuit 113 based on information on the camera angle operation (S102). . Then, the tilt motor driving circuit 113 converts the pulse modulation signal into a DC voltage (S103), and drives the tilt DC motor 26 (S103).
104), the camera unit operates at a predetermined tilt camera angle (S105).

In step S101, if the switch is turned on in the pan direction, the process proceeds to step S106. If the switch is not turned on in the tilt direction, the pan motor drive circuit 11 is turned on based on the camera angle operation information from the main CPU 112.
Then, a pulse modulation signal is output to No. 4 (S107). And
The pan motor driving circuit 114 converts the pulse modulation signal into a DC voltage (S108), and drives the pan DC motor 48 (S1).
09), the camera unit operates at a predetermined pan camera angle (S110).

If it is determined in step S106 that the camera is turned on in the tilt direction, the tilt motor driving circuit 113 is turned on based on the camera angle operation information from the main CPU 112.
Then, a pulse modulation signal is output to the pan motor drive circuit 114 (S111). Then, the tilt motor drive circuit 11
3 and the pan motor drive circuit 114
The C voltage is set (S112), the tilt DC motor 26 and the pan DC motor 48 are driven (S113), and the camera unit operates at an oblique camera angle (S114).

[Camera Angle Operation by Remote Control Receiver 94] The remote controller receiver 94 receives a camera angle operation signal for pan / tilt operation from the remote controller transmitter 104. Then, the camera angle operation information input to the remote control receiver 94 is taken into the main CPU 112,
Hereinafter, the camera angle can be operated based on the pan / tilt operation information in the same manner as in the above-described case.

[Preset of Pan Camera Angle] In accordance with the change of the pan DC motor 48, the pan potentiometer 5
2 changes the rotation angle. A voltage of +5 V is applied to both ends of the pan potentiometer 52, and the voltage indicated by the pan potentiometer 52 is converted to a 12-bit A / D converter 11.
5 is encoded. Where the encoded 1
Data of 2BIT A / D converter 115 is main CPU
The encoded data is stored in the EEPROM 116 when the preset data is stored in the memory 112.

When executing the information on the rotation angle of the pan potentiometer 52 stored in the preset memory, the main CPU 112 reads out the data in the EEPROM 116 and then outputs the information on the rotation angle to the pan motor drive circuit 114 as a pulse modulation signal. Then, the pan motor drive circuit 114 converts the pulse modulation signal into a DC voltage, drives the pan DC motor 48, and operates the camera unit at a predetermined pan camera angle.

Note that the presetting of the tilt camera toggle is performed in the same procedure as in the case described above, and the description is omitted.

Here, the procedure from when the first preset switch 92a is turned on to when the camera angle changes will be described with reference to the flowchart shown in FIG.

First, in step S100, it is determined whether or not the first preset switch 92a has been turned on. When the first preset switch 92a has been turned on, the data of the pan / tilt camera toggle is taken out of the EEPROM 116 in step S101. Thereafter, in step S102, the current camera angle data is extracted from the 12-bit A / D converter 115. Next, in step S103, the camera angle data is compared with the data at the movement destination to determine whether there is a difference.
, And the camera angle is kept as it is without generating a pulse modulation signal.

If there is a difference from the destination data in step S103, a pulse modulation signal is generated from the main CPU 112 in step S105 to move the camera angle. Thereafter, in step S106, it is compared whether there is a difference between the data at the movement destination and the current data.
Return to step 5 and move the camera angle. Step S10
If there is no difference between the destination data and the current data in step 6, the process proceeds to step S107, and the main CPU 112
, The generation of the pulse modulation signal is stopped, and the movement of the camera angle is stopped.

By providing the above-mentioned camera angle preset function, the preset camera angle position can be easily called and projected. In addition, the camera angle position that the user wants to project frequently can be stored and recalled repeatedly. it can.

Even if the camera section 11 is manually rotated in the tilt or pan direction, the rotation angle of the camera section 11 is always detected by a potentiometer via a potentiometer in conjunction with the movement of the camera section 11. Therefore, even if the rotation position of the camera unit 11 when manually rotated and the preset camera angle position are changed, there is no influence.

[Zoom switch 88] Zoom switch 8
Reference numeral 8 denotes a switch that changes the zoom speed in two stages according to the strength of the pressing force.

When the zoom switch 88 is operated, the main CPU 112 requests the camera MPU 118 via the camera CPU 117 for information on the current zoom value. Based on the request for the zoom value, information on the zoom value is taken into the main CPU 112 from the camera MPU 118 via the camera CPU 117. A pulse modulation signal is output from the main CPU 112 to the pan motor driving circuit 114 based on the zoom value information.
The pan DC motor 48 is panned by the DC voltage output from the pan DC motor.

Similarly, based on the zoom value information, the main CP
Pulse modulation signal from U112 is used for tilt motor drive circuit 1.
13 and the tilt DC motor 26 is tilted by the DC voltage output from the tilt motor drive circuit 113.

Here, the procedure from the operation of the zoom switch 88 to the operation of the zoom of the camera at the high speed or the low speed will be described with reference to the flowchart shown in FIG.

First, in step S100, it is determined whether the zoom switch 88 has been turned on. When the zoom switch 88 is turned on, it is determined whether or not the tele high speed is turned on in step S101.
12 outputs the tele high speed data to the camera CPU 117 (step S102), and subsequently requests the camera MPU 118 for the tele high speed data (step S103). The zoom of the camera is operated at the tele high speed based on the tele high speed data (step S104).

If it is not the tele high speed in step S101, the process proceeds to step S105, where it is determined whether the tele low speed is turned on. In the case of the tele low speed, the main CPU 112 outputs the tele low speed data to the camera CPU 117 (step S106), and subsequently requests the camera MPU 118 for the tele low speed data (step S107). The zoom of the camera is operated at the tele low speed based on the tele low speed data (step S108).

Subsequently, if it is not the telephoto low speed in step S105, the process proceeds to step S109, where it is determined whether the wide low speed is turned on. If the speed is wide low speed, the main CPU 112 outputs wide low speed data to the camera CPU 117 (step S110), and subsequently requests the camera MPU 118 for wide low speed data (step S111). The camera zoom is operated at a wide low speed based on the wide low speed data (step S11).
2).

If it is not the wide low speed in step S109, the main CPU 112 outputs wide high speed data to the camera CPU 117 (step S113), and subsequently requests the camera MPU 118 for wide high speed data (step S114). The zoom of the camera is operated at a wide high speed based on the wide high speed data (step S115).

[Flip-up detection switch 62] The flip-up detection switch 62 is turned on when the camera block 10 is flipped up from the document direction. In the operating position, the pan / tilt operation and the zoom operation of the camera by the lever switch 87 of the operation panel 86 and the remote control transmitter 104 are enabled.

[Arm switch 81] Arm switch 8
1 is turned on when the camera seam 4 is folded, and the ON operation signal at this time is taken into the main CPU 112, whereby the power supply to the camera block 10 is stopped.

[Bit Switch 111] The on / off information of the bit switch 111 is recognized by the main CPU 112 by turning on / off the four switches of the bit 1 switches 111a to 111d. Such a set operation of the camera angle becomes possible, and erroneous operation of the plurality of data presentation devices by the remote controller can be avoided.

[RS-232C] The RS-232C is a connector terminal 119 for connecting the data presentation device of the present invention to a personal computer or the like, and allows the personal computer to operate the data presentation device.

As described above, the document presenting apparatus according to the present invention comprises a camera block 10 having a camera section 11 arranged at the tip of one camera arm raised from the table main body 1 so as to project the table surface 2. Is retained,
Since the camera unit 11 is configured to be rotatable in the pan direction and the tilt direction, it is possible to easily present a document material, a three-dimensional object, and the like placed on the table surface 2 to all corners without moving. . In particular,
Since the camera arm 4 is positioned so as not to be reflected from the camera section 11, the camera arm 4 is not reflected when a document is presented.

The camera block 10 includes the pan mechanism 1
3 has a tilt mechanism, and the tilt mechanism has a camera 11
, The space of the tilt mechanism unit 12 and the pan mechanism unit 13 can be saved, and the entire camera block 10 can be simplified and made compact. In addition, since the rotation fulcrum shaft of the tilt mechanism 12 can be arranged at the center of the camera 11, the camera 1
The torque required for tilting 1 is small,
As a result, it is possible to reduce the size of the DC motor 26 and save power.

Further, since the remote control transmitter can be used to remotely control the presentation device, the presenter does not need to be near the presentation device and can perform the presentation operation from a remote location. Moreover,
Since the presentation operation can be freely performed by the attendees using the remote control transmitter during the conference, the conference can proceed quickly.

Further, since the camera arm 4 having the camera block 10 can be folded on the table surface 2 of the table main body 1 when not in use, the data presentation device becomes a small body, which is convenient for storage and carrying. . In addition, the motor power to the camera block 10 is automatically cut off in conjunction with the folding of the camera arm 4,
You can get a safety function when you forget to turn off the power.

The present invention is not limited to the embodiment described above and shown in the drawings, and various modifications can be made without departing from the scope of the invention.

In the present invention, when the camera arm 4 is folded, the power supply is shut off together with the motor power supply of the camera block 10, the backlight in the table surface 2 and the lighting lamp 84 are turned off, and the main body of the document presentation device is turned off. The power may be cut off.

[0092]

As described above, the document presentation device according to the present invention raises one invertible camera arm from the table body having a table surface on which document materials and the like are placed, and the distal end of the camera arm. The camera unit is mounted so that the table surface is projected on the table, and the camera unit is equipped with a pan / tilt mechanism that performs pan / tilt operation, so that document materials and three-dimensional objects placed on the table surface can be moved without moving. The effect is that the presentation can be made easily.

In particular, since the camera arm is arranged at a blind spot where the camera arm does not project from the camera unit, the camera arm does not appear together when presenting document materials, etc. Obtainable.

[Brief description of the drawings]

FIG. 1 is a perspective view of the entire appearance of a document presentation device according to the present invention.

FIG. 2 is an enlarged cross-sectional view of the camera block taken along line AA of FIG.

FIG. 3 is a side sectional view of the camera block as viewed from the direction of arrow B in FIG. 2;

FIG. 4 is a side sectional view of the camera block similarly viewed from the direction of arrow C in FIG. 2;

FIG. 5 is a front sectional view of the camera block as viewed from the direction of arrow D in FIG. 2;

FIG. 6 is an explanatory diagram showing a state of a tilt rotation angle of a camera unit in a document direction.

FIG. 7 is an explanatory diagram showing a panning angle of the camera unit in the document direction.

FIG. 8 is a side view of the camera unit in a flip-up operation state.

FIG. 9 is an explanatory diagram showing a state of a tilt rotation angle when the camera unit flips up.

FIG. 10 is an explanatory diagram showing a pan rotation angle when the camera unit is flipped up.

FIG. 11 is a perspective view of a bearing structure at a base end of the camera arm.

FIG. 12 is a plan view of an operation panel.

FIG. 13 is a longitudinal sectional view of a remote control receiving unit.

FIG. 14 is a cross-sectional view of the same remote control receiving unit.

FIG. 15 is a plan view of the remote control transmitter.

FIG. 16 is a front view of the bit switch.

FIG. 17 is an explanatory diagram of a relationship between a zoom magnification and a motor applied voltage.

FIG. 18 is a control block diagram of the document presentation device according to the present invention.

FIG. 19 is a flowchart of an operation procedure of a camera angle.

FIG. 20 is a flowchart of an operation procedure of a preset switch.

FIG. 21 is a flowchart of a zoom operation procedure.

FIG. 22 is an external perspective view of a conventional document presentation device.

[Explanation of symbols]

1 table body, 2 table surface, 4 camera arm, 10 camera block, 11 camera, 12 tilt mechanism, 13 pan mechanism, 15 subject lens,
16, 17 tilt axis, 18 tilt chassis, 20
Drum shaft, 22 worm wheel, 23 wave washer,
25 Worm gear, 26 DC motor for tilt, 30
Tilt rotation angle detection gear, 31 potentio gear, 32
Potentiometer, 37 pan chassis, 40 pan axis, 43 worm wheel, 45 wave washer, 47
Worm gear, 48 pan DC motor, 50 pan rotation angle detection gear, 51 potentiometer, 52 potentiometer, 54 flip-up mechanism, 56 shaft,
57 flange plate, 59 slip ring, 60a, 60b
Stopper piece, 61 Stopper, 62 Flip-up detection switch, 71 Shaft, 73 Brake shoe,
74 weight, 75 lock plate, 81 arm switch, 83 image display monitor, 86 operation panel, 87
Lever switch, 88 zoom switch, 89 home switch, 92a, 92b preset switch, 94
Remote control receiving unit, 95 sensor cover, 97 remote control light receiving element, 101 convex part, 102 stopper, 1
04 Remote control transmitter, 111, 111a to 111d
Bit switch, 112 Main CPU, 113 Tilt motor drive circuit, 114 Pan motor drive circuit, 11
5 12BIT A / D converter, 116 EEPRO
M, 117 camera CPU, 118 camera MPU

Claims (5)

[Claims] 1. A table main body having a table surface on which document materials and the like are placed, and a table which can be raised and inverted from the table main body.
A camera unit disposed at the tip of the camera arm of the book so as to reflect the table surface, wherein the camera unit is configured to electrically move the camera unit with respect to the table surface in a pan direction. A document presentation device comprising a mechanism unit and a tilt mechanism unit that operates in a tilt direction. 2. The document presenting device according to claim 1, further comprising a remote control receiving section provided at an upper end of the camera arm, wherein a pan / tilt operation of the camera section can be performed by remote control from a remote control transmitting section. Material presentation device characterized by the above-mentioned. 3. The document presentation device according to claim 1, wherein the camera arm has a lock mechanism for holding a folded state, and the power supply to the camera unit is stopped. . 4. The document presenting device according to claim 1, wherein a rotation fulcrum axis of the tilt mechanism portion is located at a center position of the camera portion. 5. The material presentation device according to claim 1, wherein the tilt mechanism is provided on a pan drive shaft of the pan mechanism.