JPH0991584A - Rotating device for signal transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the restrictions of the quantity of rotation on the base of a turntable and securely transmit signal data to a signal ource by supplying electric power from the base to the turntable side in a noncontact manner and sending and receiving signal data as light signal data between the base and turntable in a noncontact manner. SOLUTION: The turntable is equipped with, for example, a video camera M and the turntable 12 rotates on the base 10, so that the device is used as, for example, a video monitor device for security. A noncontact power supply part 14 is provided opposite the base 10 and turntable 12 and supplies electric power to the 2nd processing circuit 44 of a noncontact signal transmission processing means 16 and the video camera M on the side of the turntable 12 without contacting. The noncontact signal transmission processing means 16 sends and receives the signal data of the video camera M as a signal source between the base 10 and turntable 12 as the light signal data through the hollow part 20a of a shaft 20 in a noncontact manner.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention supports a turntable rotatably with respect to a base, and the turntable is provided with a signal source such as a video camera. The present invention relates to a rotating device for signal transmission, which is capable of contactlessly exchanging signal data regarding a signal source.

[0002]

2. Description of the Related Art When a video camera is used to monitor the surroundings, for example, to monitor security, the video camera is installed on a turntable, and the turntable is rotatable with respect to a base. It is like this. As for the video and audio for security shot by a video camera, it is necessary to send signal data as a video signal or audio signal from the rotating base to the base side. In the conventional rotating device for signal transmission of this kind, in order to send the signal data from the rotary base to the base side, it is necessary to pass a transmission path of the signal data through a mechanism portion for rotating the rotary base with respect to the base. is there. Therefore, a flexible printed circuit board is used as a signal data transmission path. A flexible printed circuit board of this kind is set between the rotary table and the base table so as to be loosened so that the rotary table can rotate, for example, 360 ° or more with respect to the substrate.

[0003]

Since such a flexible printed circuit board is set to be considerably longer than the minimum required length between the rotary base and the base so as to be sufficiently loosened, the flexible printed circuit board is It is rarely cut by being directly pulled or twisted. Moreover, the flexible printed circuit board of this type is curled in advance at the rotating portion to reduce the influence of the twist of the flexible printed circuit board itself. However, the amount of rotation of the rotary base with respect to the base is naturally limited, and the limit is that the rotary base can rotate 360 ° with respect to the base.

Instead of using a flexible printed circuit board as such a wired transmission path, a method of transmitting the signal data of the video camera from the rotary base to the base by mechanical contact using a brush or the like is also conceivable. . By using such a contact-type signal transmission path, the rotary base can be rotated several times with respect to the base, but since it is a brush contact type, mechanical contacts naturally exist. Therefore, when the brush of the base is mechanically in contact with the contact ring of the rotating base, a phenomenon such as chattering may occur when the video camera signal is transmitted from the rotating base to the base. As a result, signal deterioration of the signal data of the video camera occurs. Therefore, it is not possible to send analog signal data, especially digital signal data from the rotary base to the base side or vice versa.

When the brush contact type transmission path is used, there is a problem in durability of the brush and the rotating ring.
Moreover, when the brush is weak against changes in humidity and temperature and is rotated for a long period of time, the brush and the ring are chipped, resulting in insulation, which makes it impossible to reliably send signal data, which is not practical. Therefore, the present invention has been made in order to solve the above-mentioned problems, and there is no particular limitation on the amount of rotation of the turntable with respect to the base, and it is possible to reliably transmit signal data relating to the signal source. It is an object of the present invention to provide a rotating device.

[0006]

SUMMARY OF THE INVENTION In the present invention, the above object is to provide a base, a signal source, and a rotary base that is rotatably supported with respect to the base and that rotates from the base. A non-contact power supply unit for supplying power to the base in a non-contact manner, and a non-contact for exchanging the signal data of the signal source as optical signal data in a non-contact manner between the base and the rotary base for non-contact processing. Signal transmission processing means, and a rotator for signal transmission.

In the present invention, the base is rotatable with respect to the turntable. The non-contact power supply unit is configured to supply power from the base to the rotary table in a non-contact manner. The non-contact signal transmission processing means converts the signal data relating to the signal source into optical signal data between the base and the turntable and exchanges them in a non-contact manner for processing. By doing so, the rotation angle of the turntable with respect to the base is not particularly limited, and the turntable can freely rotate. In this case, since the signal data regarding the signal source is contactlessly exchanged as optical signal data between the base and the rotary base and processed, analog data as well as digital data can be reliably processed. Signal data can be exchanged between the base and the rotary base.

[0008]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Note that the embodiments described below are preferred specific examples of the present invention,
Although various technically preferable limitations are given, the scope of the present invention is not limited to these modes unless otherwise specified to limit the present invention. FIG. 1 shows a preferred embodiment of a rotating device for signal transmission according to the present invention. FIG. 2 is an exploded perspective view of the rotary device for signal transmission of FIG. FIG. 3 is a conceptual diagram of the entire rotating device. 1 and 2, the rotating device for signal transmission includes a base 10, a cylindrical rotating base 12, a non-contact power supply unit 14, a non-contact signal transmission processing means 16 and the like. The base 10 is also called a lower support, and the turntable 12 is also called an upper turntable. The base 10, the turntable 12, the non-contact power supply unit 14, and the non-contact signal transmission processing means 16 are also shown in FIG.

In FIGS. 1 and 2, the base 10 is a portion that is placed on or fixed to a predetermined fixing portion F. A bearing (bearing portion) 8, a drive motor 23, a positioning sensor 15 and the like are mounted on the base 10. The turntable 12 has a shaft 20, which is used as the base 10.
It is rotatably supported by a bearing 8. The shaft 20 is preferably a cylindrical member having a hollow portion 20a. However, it is of course possible to use a transparent member such as plastic for the shaft 20 instead of using a hollow cylindrical member.

A video camera M as a signal source (data creating means) is detachably attached on the rotary table 12. The rotary table 12 of the rotary device for signal transmission is equipped with a video camera M, and when the rotary table 12 rotates with respect to the base 10, for example, a video monitoring device for security or a conference using a so-called television. It can be used as a system.

To this end, the output shaft 23 of the drive motor 23
A gear or roller 24 is attached to a. This gear or roller 24 is provided on the outer peripheral portion 12 of the turntable 12.
When the drive motor 23 is rotated by engaging with or contacting a, the rotary base 12 is rotated and positioning can be performed. A sensor shielding plate 15a is provided below the turntable 12. This sensor shield plate 15
When the turntable 12 comes to a predetermined position in the rotation direction, a enters the space between the positioning sensors 15 and the positioning sensor 15 can output the positioning signal LS of FIG.

Next, the non-contact power supply unit 14 and the non-contact signal transmission processing means 16 will be described with reference to FIG. 4, FIG. 1 and FIG. The non-contact power supply unit 14 is provided corresponding to the base 10 and the turntable 12. Non-contact power supply unit 1
Reference numeral 4 denotes a portion that supplies power from the base 10 to the rotary base 12 side in a non-contact manner to the second processing circuit 44 of the non-contact signal transmission processing means 16 and the video camera M. The non-contact signal transmission processing means 16 converts the signal data of the video camera M, which is a signal source, into optical signal data between the base 10 and the rotary base 12 through the hollow portion 20a of the shaft 20 in a non-contact manner for processing. It is the part to do.

First, the structure of the non-contact power supply section 14 will be described. As shown in FIG. 4, the non-contact power supply unit 14 has a magnetism generation coil 30, a power supply circuit and an oscillation circuit (circuit) 32, a current generation coil 34, and a power supply rectification circuit 36. The power supply circuit / oscillation circuit 32 and the magnetism generating coil 30 are arranged on the base 10 side. The current generating coil 34 and the power supply rectifying circuit 36 are arranged on the rotary base 12 side. The magnetism generating coil 30 (electromagnetic induction type coil) is a ring-shaped coil as shown in FIG. As shown in FIG. 1, the magnetism generating coil 30 is fixed to the bearing 8 with the fixing screw 9 on the outer side of the shaft 20 via the coil fixing plate 7. The power supply circuit and the oscillation circuit 32 in FIG. 4 are supplied with power from a required power supply (for example, a commercial single-phase AC 100V power supply) to form an oscillation waveform, so that the magnetism generating coil 30 can generate an AC magnetic field 30.
a is formed.

On the other hand, an alternating current is induced in the current generating coil 34 of FIG. 4 by the alternating magnetic field 30a. The power supply rectifying circuit 36 of the rotary table 12 converts the alternating current generated by the alternating magnetic field 30a in the current generating coil 34 into a direct current. The power supply rectifier circuit 36 can supply the direct current to the second processing circuit 44 and the video camera M. As described above, the base 10 can supply power to the rotary table 12 in a non-contact manner. The current generating coil 34 is fixed so as to be fitted into the lower portion of the turntable 12. The current generating coil 34 faces the magnetism generating coil 30 in a non-contact manner at a predetermined interval.

Next, the non-contact signal transmission processing means 16 will be described. The contactless signal transmission processing means 16 of FIG. 4 includes a first processing circuit 40, an optical transmission / reception unit 42, and a second processing circuit 4.
It has 4 mag. The first processing circuit 40 is provided in the base 10. The second processing circuit 44 is provided in the turntable 12. The optical transmitter / receiver 42 is connected to the base 10
And corresponding to the turntable 12.

The optical transmitter / receiver 42 includes a first light emitting portion 45, a second light emitting portion 46, a first light receiving portion 47, and a second light receiving portion 48.
have. The first light emitting portion 45 and the second light receiving portion 48 are arranged on the lower end side of the shaft 20 of the base 10. The first light receiving portion 47 and the second light emitting portion 46 are arranged on the upper end side of the shaft 20 of the rotary table 12. The first light emitting portion 45 is located at a position corresponding to the first light receiving portion 47, and the second light emitting portion 46 is located at a position corresponding to the second light receiving portion 48. First light emitting section 4
5 and the 2nd light emission part 46 can use a light emitting diode, for example. First light emitting section 47 and second light receiving section 48
For example, a phototransistor can be used.

The first processing circuit 40 in the base 10 is connected to the microcomputer 100, and the transmission circuit 4
0a, a receiving circuit 40b, a data modulating circuit 40c, and a data demodulating circuit 40d. Microcomputer 1
An external device 110 is connected to 00, and the external device 1
The signal data SD from 10 is the microcomputer 1
00, a predetermined modulation is applied by the data modulation circuit 40c, and the optical signal data P is transmitted by the transmission circuit 40a.
As D, light is emitted from the first light emitting unit 45 to the first light receiving unit 47 side. Further, the receiving circuit 40b receives the optical signal data PD1 from the second light emitting section 46 received by the second light receiving section 48, and the data demodulation circuit 40d demodulates the optical signal data PD1 and the microcomputer 1
It is supposed to be sent to 00. The demodulated signal data is sent to the external device 110 side as a video signal and / or an audio signal.

Next, the second processing circuit 44 includes a transmission circuit 44.
a, a receiving circuit 44b, a data modulating circuit 44c, and a data demodulating circuit 44d. The video camera M is connected to the second light emitting unit 46 via the data modulation circuit 44c and the transmission circuit 44a. The first light receiving unit 47 is connected to the video camera M via the receiving circuit 44b and the data demodulating circuit 44d. The signal data from the video camera M is modulated by the data modulation circuit 44c and then converted into the optical signal data PD1 by the transmission circuit 44a.
As a result, the second light emitting unit 46 is caused to output the optical signal data PD.
The light is emitted in response to 1 and is sent to the second light receiving unit 48 side. In addition, the first light emitting unit 45 to the first light receiving unit 4
The optical signal data PD received by 7 is demodulated by the data demodulating circuit 44d via the receiving circuit 44b and sent to the video camera M as, for example, video camera control signal data.

Next, the drive motor 23 controls the motor control unit 4 with respect to the power supply circuit in the power supply circuit and the oscillation circuit 32.
7 are connected. The drive motor 23 is for rotating and positioning the rotary table 12 with respect to the base 10 at a predetermined angle. In this case, the sensor shield plate 15a of the rotary table 12 of FIG. 1 turns the sensor output of the positioning sensor 15 from ON to OFF, and the positioning signal LS is given to the motor control unit 47. It is supposed to stop immediately.

Next, the operation of the rotating device for signal transmission will be described with reference to FIGS. A video camera M is attached on the turntable 12. The power supply circuit and the oscillator circuit 32 are connected to a commercial power supply. First, when an image signal and an audio signal are to be obtained by the video camera M for surveillance for security, the external device 11
0 is signal data S for the microcomputer 100
Send D. The microcomputer 100 modulates the signal data SD with the data modulation circuit 40c, and the transmission circuit 4
The optical signal data PD is changed by 0a. Optical signal data P
D is sent from the first light emitting unit 45 to the first light receiving unit 47. The optical signal data PD is received by the receiving circuit 44b via the first light receiving section 47, demodulated into signal data by the data demodulating circuit 44d, and given to the video camera M. As a result, the video camera M performs an operation of shooting a predetermined image.

The video signal and audio signal obtained by the video camera M are modulated by the data modulation circuit 44c,
The optical signal data PD1 is converted by the transmission circuit 44a. The optical signal data PD1 is sent from the second light emitting unit 46 and received by the second light receiving unit 48. The optical signal data PD1 received by the second light receiving unit 48 is received by the receiving circuit 40b,
The data is demodulated by the data demodulation circuit 40d and sent to the microcomputer 100 side. And microcomputer 1
00 sends the demodulated signal data to an external device 110 such as a video conference system.

At this time, the motor control section 47 receives power from the power supply circuit in the power supply circuit and the oscillation circuit 32 to drive the drive motor 23 so that the video camera M faces the predetermined direction. As a result, the turntable 12 rotates by a predetermined angle with respect to the base 10. The microcomputer 100 instructs the motor controller 4 to instruct the angle of the drive motor 23.
This is performed based on the command signal sent to 7. When the sensor blocking plate 15a blocks the light from the light emitting portion of the positioning sensor 15, the positioning sensor 15 sends a positioning signal LS to the motor controller 47, and the drive motor 23 immediately stops. In this way, the rotary base 12 is stopped at a predetermined position with respect to the base 10, and the video camera M is accurately oriented in a predetermined direction.

Light transmission / reception in the light transmission / reception unit 42 is performed through the hollow portion 20a of the shaft 20 in FIG. 1, so that the transmission / reception can be reliably performed in a non-contact manner. The positioning sensor 15 shown in FIG. 1 uses a so-called photo coupler having a light emitting portion and a light receiving portion that receives light from the light emitting portion.
Not limited to this, a rotary encoder, a rotary potentiometer, a magnet, a magnetic sensor, or the like may be used as a means for positioning the rotary base 12 at a predetermined position with respect to the base 10. Further, by applying a lubricant such as silicon oil between the shaft 20 and the bearing 8 of FIG. 1 or by using a material having a good slidability as the material of the shaft 20, for example, a fluororesin (polytetrafluoroethylene), The load on the rotating table 12 is reduced when the rotating table 1 is rotated.
The rotation of 2 can be performed smoothly.

In the above-described embodiment, the video camera M is used for security, but the rotating device for signal transmission can be used, for example, in a so-called video conference system. So in a video conference,
In order to direct the camera to a normal seat, it is necessary to direct the video camera M to each seat A, B, C, ... At a predetermined angle (for example, θ = 30 °) as shown in FIG. In this case, for each angle corresponding to each seat A, B, C,
By setting a plurality of rotary positioning means 15b composed of a combination of the positioning sensor 15 and the sensor shielding plate 15a, the video camera M can be swiftly attached to the intended seat.
Can be directed.

The rotary positioning means 15b is also called a reset sensor, and if the rotary positioning means 15b is not provided, a control block as shown in FIG. 6 is required.
That is, the detection unit 70 in FIG. 6 always detects the control amount detected from the control target, feeds it back to the comparison unit 74 via the image input device 72 and the calculation unit 73, and the comparison unit 74 obtains this value. Calculation corresponding to the controlled variable ─
—By comparing with the target value 75, it is necessary to set an operation signal for operating an operation unit such as a drive motor to determine the operation amount of the controlled object 71.

However, if the rotary positioning means 15b is provided, the microcomputer 100, which is the determination unit, operates the drive motor 23, which is the operation unit, based on the target value of the rotary table 12 with respect to the base 10 to perform control. By controlling the rotational position of the target turntable 12, the video camera M of the turntable 12 can be reliably oriented in the required direction.

Next, with reference to FIGS. 8 to 15, the rotary table 1
2 and the arrangement example of the drive motor 23 of the rotation positioning means will be described. In FIG. 8, the roller of the drive motor 23 or the gear 24 is in contact with or meshes with the inner peripheral surface of the rotary table 12. The roller or gear 24 of the drive motor 23 of FIG. 9 is in contact with or meshes with the bottom surface of the rotary table 12.

The rotary table 12 of FIG. 10 and the rollers or gears 24 of the motor 23 are connected by a belt or chain 80. Worm gear 8 of the turntable 12 of FIG.
6 meshes with the worm wheel 89 of the motor 23. Worm gear 9 of shaft 20a of rotary base 12 of FIG.
1 meshes with the worm wheel 93 of the drive motor 23. In the lower part of the shaft 20a of the turntable 12 of FIG.
A roller or gear 124 is attached. The drive motor 23 is provided inside the base 10, and the rubber or gear 24 of the drive motor 23 contacts or meshes with the rubber or gear 124 of the rotary base 12. The shaft 20a of the rotary table 12 in FIG. 14 is in contact with or meshes with the rubber of the drive motor 23 or the gear 24. The shaft 20a of the turntable 12 in FIG. 15 meshes with the rotating body 23a of the drive motor 23 by a belt or a chain 80.

Referring now to FIGS. 16 and 17, FIG.
In the embodiment of FIG. 17 and FIG. 17, the rotary positioning means 1 of FIG.
5b is omitted. In this embodiment, the rotary base 12 drives the drive motor 23 such as a step motor with respect to the base 10 to rotate (index) the rotary base 12 at a predetermined angle, thereby causing the video camera M to move to a predetermined position. It is intended to turn in the direction of. Since the embodiment of FIGS. 16 and 17 is almost the same as the embodiment of FIG. 1, the description of the other elements will be omitted.

As described above, according to the embodiment of the present invention, the video camera is set as the signal source on the turntable, and the turntable 12 and the video camera M are oriented in, for example, a video conference system. The video information and audio information can be surely and quickly turned to the intended seat. In addition to the video conference system, the embodiment of the present invention can be applied to, for example, a security system that monitors an intruder or the like as described above. Further, the rotary table 12 and the video camera M thereof can be smoothly and semi-permanently rotated up to a predetermined angle of 360 ° or more by an actuator such as a drive motor, and the object can be monitored or automatically tracked. In the embodiment of the present invention, unlike the conventional one, the rotation angle is not particularly limited, and signal data can be exchanged between the rotary base and the base via the optical transceiver 42 without contact. Therefore, not only the analog type signal data but also the digital signal can be surely exchanged.

Further, in the embodiment of the present invention, so-called electric power can be supplied from the base 10 to the rotary base 12 in a non-contact manner, so that a connection is made as compared with the conventional mechanical contact type. Power can be supplied stably without any failure. Further, in the past, a flexible printed circuit board was used to send a signal, but in the embodiment of the present invention, since the flexible printed circuit board does not need to be reversed to return the twist, the rotary table is indexed. It is possible to freely rotate in the clockwise direction and the counterclockwise direction with respect to the target value for achieving the target value, and to reach the target value faster. Since the non-contact power supply unit and the non-contact signal transmission processing means do not hinder the rotation of the rotary base and the base, the rotation load is smaller than that of the conventional one, and the rotary base can rotate at high speed and position at high speed. . In other words, even if the rotary table is rotated in the desired direction as much as possible, the signal data can be transmitted and the power can be supplied in a non-contact manner, and the rotary table can smoothly rotate without changing from the initial state.

By the way, the shaft 20a is not limited to the above-described embodiment of the present invention, and as described above, the shaft 20a may have a cylindrical shape or a transparent shape as shown in FIG. It suffices that holes are formed only in the optical paths of the first light emitting unit 45 and the first light receiving unit 47 and the optical paths of the second light emitting unit 46 and the second light receiving unit 48.

In the above-described embodiment, the video camera is used as an example of the signal source, but the signal source is not limited to this. For example, other precision equipment such as a TV monitor may be set on the rotary base, or various sensors may be set on the rotary base. It is of course possible to set to. Therefore, in the embodiment of the present invention, the signal source is not particularly limited, and various types such as precision instruments and sensors can be adopted. Examples of precision instruments include, for example, surveying instruments, astronomical telescopes, binoculars, mobile phones, and the like.

[0034]

As described above, according to the present invention,
There is no particular limitation on the amount of rotation of the rotary base with respect to the base, and it is possible to reliably transmit signal data regarding the signal source while supplying power to the rotary base.

[Brief description of drawings]

FIG. 1 is a diagram showing a first preferred embodiment of a rotary device for signal transmission of the present invention.

FIG. 2 is an exploded perspective view of the embodiment shown in FIG.

FIG. 3 is a schematic view showing an appearance of the embodiment shown in FIG.

FIG. 4 is a diagram showing a base, a turntable, and other elements of the embodiment of FIG.

FIG. 5 is a diagram showing an example of positioning of a camera provided on a turntable.

FIG. 6 is a diagram showing a control block as a comparative example in the case where the rotary positioning unit of FIG. 1 is not provided.

FIG. 7 is a diagram showing a control block in the case where there is the rotational positioning means of FIG.

FIG. 8 is a diagram showing a connection relationship between a rotary base and a drive motor according to the embodiment of the present invention.

FIG. 9 is a diagram showing a connection relationship between a rotary base and a drive motor according to the embodiment of the present invention.

FIG. 10 is a diagram showing a connection relationship between a rotary base and a drive motor according to the embodiment of the present invention.

FIG. 11 is a diagram showing a connection relationship between a rotary base and a drive motor according to the embodiment of the present invention.

FIG. 12 is a diagram showing a connection relationship between a rotary base and a drive motor according to the embodiment of the present invention.

FIG. 13 is a diagram showing a connection relationship between a rotary base and a drive motor according to the embodiment of the present invention.

FIG. 14 is a diagram showing a connection relationship between a rotary base and a drive motor according to the embodiment of the present invention.

FIG. 15 is a diagram showing a connection relationship between a rotary base and a drive motor according to the embodiment of the present invention.

FIG. 16 is a diagram showing Embodiment 2 of the present invention.

FIG. 17 is an exploded perspective view of the second embodiment shown in FIG.

[Explanation of symbols]

 8 Bearings 10 Base 12 Rotation Table 14 Non-contact Power Supply Section 15 Positioning Sensor 15a Sensor Blocking Plate 15b Rotating Positioning Means 16 Non-contact Signal Transmission Processing Means 20 Shaft 20a Shaft Hollow 23 Drive Motor 30 Magnetic Generation Coil 32 Power Supply Circuit And oscillator circuit 34 current generation coil 36 power supply rectifier circuit 40 first processing circuit 42 optical transmission / reception unit 44 second processing circuit 45 first light emitting unit 46 second light emitting unit 47 first light receiving unit 48 second light receiving Part M Video camera (Signal source)

Front page continued (72) Inventor Eiji Oshima 6-735 Kitashinagawa, Shinagawa-ku, Tokyo Sony Corporation

Claims (8)

[Claims] 1. A base, a rotary base that includes a signal source and is rotatably supported with respect to the base, and a non-contact power supply for supplying power from the base to the rotary base in a non-contact manner. A signal comprising: a supply unit; and a non-contact signal transmission processing unit for exchanging signal data regarding a signal source into optical signal data between the base and the turntable in a non-contact manner for processing. Rotating device for transmission. 2. The non-contact power supply section includes a magnetic field generating coil arranged on a base, and a circuit arranged on the base for generating an AC magnetic field by supplying power from a commercial power supply to the magnetic field generating coil. , A current generating coil that is arranged on the turntable and generates a current by the alternating magnetic field generated by the magnetic field generating coil of the base, and a rectifier circuit that is arranged on the turntable and rectifies the current generated by the current generating coil The rotation device for signal transmission according to claim 1, further comprising: 3. The non-contact signal transmission means comprises an optical transmitter / receiver for exchanging signal data relating to a signal source in a contactless manner, and the optical transmitter / receiver comprises a first light emitting unit arranged on a base and a turntable. A first light emitting portion for receiving the optical signal data from the first light emitting portion,
Light receiving section, a second light emitting section arranged on the turntable, and a second light receiving section arranged on the base for receiving optical signal data from the second light emitting section.
Of the light receiving part of and the signal data from the outside is processed and given to the first light emitting part,
A first processing circuit for processing the optical signal data from the second light receiving section, and processing the signal data related to the signal source to the second light emitting section to process the optical signal data from the first light receiving section. A second processing circuit, wherein the second processing circuit is provided with a current rectified by the rectifying circuit for driving.
A rotation device for signal transmission according to item 1. 4. The base has a bearing portion, the rotary base has a shaft, and the rotary base is rotatable with respect to the base by holding the shaft of the rotary base on a bearing of the base. The rotation device for signal transmission according to claim 1. 5. The rotary device for signal transmission according to claim 3, wherein the shaft of the rotary table is hollow so as to pass the optical signal data of the optical transceiver. 6. The rotating device for signal transmission according to claim 3, wherein the shaft of the rotating table is a transparent member for passing optical signal data of the optical transmitting / receiving unit. 7. The rotating device for signal transmission according to claim 4, further comprising a rotary positioning unit for rotating and positioning the rotary base with respect to the base. 8. The rotary positioning means includes a motor for rotating the rotary table in the rotation direction, and a positioning sensor for giving a stop command to the motor side when the rotary table reaches a predetermined position. 7. A rotating device for signal transmission according to item 7.