JPH0729968U - Turntable - Google Patents

Abstract

(57) [Abstract] [Purpose] It is intended to provide a turntable which receives infrared light from a remote controller and turns. [Structure] The signal light receiving portion 5 on the front surface of the movable table 3a of the rotary table 3.
Is formed by a box-shaped concave portion, and a plurality of infrared light receiving sensors 18, 19 are provided at the innermost portion thereof by being partitioned by a light shielding wall 17, and the central portion of the signal light receiving portion 5 is shielded at its central portion. A light shielding plate 14 is provided. As a result, when infrared light is incident at an angle deviated from the front of the light receiving unit 5,
A difference occurs in the detection signal level of the infrared light received between the plurality of infrared light receiving sensors. By detecting the difference in the signal levels, the driving direction of the motor can be selected, and the difference in the signal levels is eliminated, so that the rotation of the motor can be stopped and the turntable can be oriented toward the remote controller operator.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a turntable on which, for example, an audio device or a video device is mounted and rotated.

[0002]

[Prior art]

 When looking at the screen of a television receiver (hereinafter, abbreviated as TV), it is naturally most preferable to look at the screen directly in front of the image and its acoustic aspect. Also, when listening to music, it is desirable to listen to the music in front of the device in terms of the left-right volume balance. For this reason, conventionally, a device for placing these video equipment on a turntable and rotating them manually or incorporating a rotation mechanism by a motor and operating this with a remote control to adjust to the optimum direction. Is proposed.

FIG. 8 is a diagram showing an example thereof, in which the TV 30 is mounted on a base 31 driven and rotated by a motor, and the left and right ends near the front surface of a base 31 b to which the base 31 is fixed, Ultrasonic sensors 33 and 34 for receiving a control signal by an ultrasonic wave from the remote controller 32 are provided. Then, when the operation key 32a of the remote controller 32 is pressed, the ultrasonic signal output from the remote controller 32 is detected by the ultrasonic sensors 33 and 34, and the angle with respect to the remote controller 32 is obtained based on the phase difference, and the direction thereof is determined. The movable base 31a of the base 31 is rotated.

[0004]

[Problems to be solved by the device]

 According to the conventional configuration as described above, the angle of the base 31 with respect to the remote controller 32 is detected based on the phase difference between the ultrasonic signals detected by the two sensors 33 and 34. This is because the infrared rays used in ordinary remote controls have high frequencies and extremely short wavelengths, making it impossible to measure the phase difference. For this reason, the remote controller 32 requires a circuit and mechanism for generating an ultrasonic signal in addition to the function of outputting infrared rays so as to function as a normal remote controller.

The present invention has been made in view of the above-mentioned conventional example, and it is an object of the present invention to provide a rotary base that rotates by receiving infrared light from a remote controller.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the turntable of the present invention has the following configuration. That is, it is a rotary table on which an audio device or a video device is mounted and rotates, and a plurality of infrared light receiving sensors (18, 19) for detecting infrared light output from a remote controller and the plurality of infrared light receiving sensors. A movable base (3a) having a signal light receiving portion (5) on the front surface thereof, which has a light shielding wall (17) for shielding each other from each other, and detection means for detecting a difference in light receiving amount received by each of the plurality of infrared light receiving sensors And a rotating means for selecting and rotating a rotating direction of the movable table according to a detection result of the detecting means.

[0007]

[Action]

 In the above configuration, the difference in the amount of infrared light received by each of the plurality of infrared light receiving sensors (18, 19) for detecting the infrared light output from the remote controller is detected, and the infrared light can be moved according to the difference. Select the rotation direction of the table and rotate it. Thereby, the rotating table can be rotated in a desired direction by using infrared light.

[0008]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the present embodiment, the case of a TV turntable will be described, but the present invention is not limited to this, and the turntable can be used for various devices such as a TV, an audio device, or a video device such as a camera. Can be used for mounting.

FIG. 1 is a perspective view showing a use state of a turntable for a television.

In FIG. 1, a television receiver (TV) 1 has a display surface 2 on its front surface and is mounted on a movable table 3 a of a rotating table 3. The movable base 3a is mounted on a fixed base 4 having a built-in mechanism for rotating the movable base 3a in the horizontal direction by a motor. On the front surface of the movable table 3a, there is provided a light receiving section 5 for receiving a control signal from an infrared signal from the remote controller 6.

FIG. 2 shows a perspective view of the remote controller 6, where 7 is a key for directing the display surface 2 of the TV 1 toward the remote controller operator with one touch, and 8 is a key for rotating the display surface 2 of the TV 1 leftward. The direction key 9 is an R direction key for rotating the display surface 2 of the TV 1 to the right. Keys for operating other functions of the TV 1 are omitted in the figure.

3 and 4 are diagrams showing a detailed configuration of the light receiving portion 5 provided on the front surface of the movable table 3a. FIG. 3 is a front view thereof, and FIG. 4 is a side sectional view thereof.

Infrared light receiving sensors 18 and 19 are embedded in the innermost part of the horizontally long box-shaped light receiving portion 5 in a lined manner to the left and right, and the boundary portion is separated by a light shielding wall 17. A light-shielding plate 14 that shields the central portion of the light-shielding wall 17, that is, the entrance surface of the light-receiving portion 5 is provided. Reference numerals 12 and 13 denote left and right concave portions partitioned by a light blocking wall 17, and reference numerals 15 and 16 denote left and right edges of the light blocking surface 14. Reference numerals 10 and 11 denote inclined surfaces of the inner walls of the recesses 12 and 13 which are located on the outer side.

The positions of the light receiving surfaces of the infrared light receiving sensors 18 and 19 are arranged so that the light receiving surfaces are shielded by the left and right edges 15 and 16 of the light shielding surface 14 when viewed from the front side by about half. is there. Further, it is desirable that the inner wall of the light receiving portion 5, the light shielding wall 17, and the respective surfaces on the back side of the light shielding plate 14 are in a surface state having a small infrared reflection coefficient. The light shielding plate 14 may be formed integrally with the light shielding wall 17 or may be formed separately.

FIG. 5 is a block diagram showing the configuration of the rotation control circuit incorporated in the turntable 3 of this embodiment.

When the infrared light receiving sensors 18 and 19 in the light receiving section 5 receive the infrared light, the signal detecting circuits 22 and 23 detect that the infrared light is received. Each of the detected signals is input to the discrimination circuit 29 and also to the comparator 24.

On the other hand, in the identification circuit 29, it is determined whether the detected infrared light is a signal for executing a function provided in a normal remote controller such as channel switching or volume adjustment, and the rotary table 3 is operated. If it is not a signal for this purpose, the operations of the signal detection circuits 22 and 23, the comparator 24 and the motor drive circuit 25 are prohibited. If the signal indicates that the L direction key 8 or the R direction key 9 is pressed, the operation of the comparator 24 is disabled. When the L direction key 8 is pressed, the motor drive circuit 25 rotates the motor 28 to the left, and when the R direction key 9 is pressed, the motor drive circuit 25 rotates the motor 28 to the right. Output a signal.

When the key 7 of the remote controller 6 is pressed, the identification circuit 29 enables the signal detection circuits 22 and 23 and the comparator 24, and the identification circuit 29 controls the motor drive circuit 25 to rotate. Is not output. Accordingly, in the comparator 24, which infrared light receiving sensor receives the stronger infrared light, that is, in which direction the movable table 3a of the rotary table 3 faces the remote controller 6 which outputs infrared light. It is determined whether there is. A rotation control signal is output to the motor drive circuit 25 according to the comparison result of the comparator 24. That is, when the signal level detected by the infrared light receiving sensor 18 is higher, the movable table 3a is rotated counterclockwise until it becomes equal to the signal level detected by the infrared light receiving sensor 19, and vice versa. When the signal level detected by the sensor 19 is higher, the movable table 3a is rotated rightward until it becomes equal to the signal level detected by the infrared light receiving sensor 18. In this way, the movable table 3a of the rotary table 3 can be turned to the front by one-touch operation of the key 7.

The operation in the above configuration is as follows. That is, when the viewer depresses the key 7 with the emission surface of the infrared light of the remote controller 6 facing the light receiving portion 5 from a position biased to the left or right from the front of the display surface 2 of the TV 1, the viewer has a predetermined format. A signal is emitted as an infrared ray signal, and the light receiving unit 5 of the turntable 3 receives the signal. The reception of this signal is performed by both of the infrared receiving sensors 18 and 19 at the innermost portions of the left and right symmetrical recesses 12 and 13 of the light receiving unit 5, and these two recesses 12 and 13 are separated by the light shielding wall 17. Therefore, the intensity of the infrared light received by the two infrared light receiving sensors 18 and 19 on the left and right differs depending on the angle of the movable table 3a at that time. By detecting the level difference of this signal, the direction of the movable base 3a can be detected, and the rotation drive signal of the motor 28 can be output according to this direction.

FIG. 6 is a circuit diagram showing an example of a specific circuit configuration of the detection circuit 22 (23) for detecting infrared light according to this embodiment. The signal detection circuits 22 and 23 have the same circuit configuration. FIG. 7 is a circuit diagram showing a concrete circuit example of the comparator 24 which inputs the detection signals from the detection circuits 22 and 23 and compares the signal levels.

In FIG. 6, reference numeral 61 denotes a photodiode corresponding to the infrared light receiving sensor 18 (19) for detecting infrared light. When the photodiode 61 receives infrared light, it conducts and the FET 62 turns on. To do. As a result, a signal 60 indicating that infrared light has been detected is output to the comparator 24 in the subsequent stage. In FIG. 6, 64 is an enable signal output from the above-mentioned identification circuit 29, which is a signal for enabling the operation of the signal detection circuit 22 (23). That is, when the signal 64 is at the high level, the transistor 65 is turned on and the output of the signal 60 is enabled.

In FIG. 7, each of the signals 60 and 60 ′ output from the signal detection circuit 22 (23) is amplified by a circuit having the same configuration and then compared with a predetermined voltage level by operational amplifiers 70 and 71. It Now, if only the light receiving sensor 18 receives infrared light, the signal level output from the operational amplifier 70 becomes higher than the level of the output signal from the operational amplifier 71. In this case, the output 73 of the comparison operational amplifier 72 becomes high level, and the movable table 3a of the rotary table 3 is rotated leftward so as to face the operator. On the contrary, when the light receiving sensor 19 detects the infrared light more strongly, the output signal level of the operational amplifier 71 becomes higher than the output signal level of the operational amplifier 70, the output 73 of the operational amplifier 72 becomes low level, and the movable table 3a. The motor 28 is rotationally driven so that the right side faces.

It should be noted that FIGS. 6 and 7 merely show examples of circuits, and the present invention is not limited to these circuits. In addition, an allowable range is set to some extent so that the turntable does not frequently rotate a minute amount due to a slight difference in the detection signal levels by the sensors 18 and 19, and the turntable is not turned within this range. Is also good.

According to the above-mentioned configuration, since the rotation angle of the rotating table can be adjusted by sharing the light emitting section that emits infrared rays used in the conventional remote controller, the cost of the entire apparatus can be reduced. is there.

Further, according to the present embodiment, when the viewer operates the key 7 of the remote controller 1 by one-touch operation from the left or right of the front of the TV 1, the display surface 2 of the TV 1 is automatically displayed. You can turn to your own direction.

In the above description, the rotary base is rotated horizontally to the left and right to automatically obtain the front position. However, the infrared light receiving sensors of the present embodiment should be arranged vertically. Thus, it can be applied to vertical rotation, so-called tilt angle adjustment.

In addition, if the infrared light receiving sensors of this embodiment are arranged in both the horizontal and vertical directions and a total of four are installed in a cross shape, and if a light-shielding surface is provided on the boundary line and the front of the central part, the infrared light receiving sensor can be leveled. It is also possible to allow bidirectional adjustment between the direction and the vertical direction.

In addition, the infrared light receiving unit of the present embodiment is built into a device such as a television set, and a signal for instructing the rotation table to rotate is supplied from the device, so that the infrared sensor unit is normally operated. Can also be used as a remote control signal receiver.

[0029]

[Effect of device]

 As described above, according to the present invention, there is an effect that the rotation angle of the turntable can be adjusted by the infrared light used in the ordinary remote controller.

[Brief description of drawings]

FIG. 1 is an external perspective view showing a use state of a rotary table according to an embodiment of the present invention.

FIG. 2 is an external perspective view of a remote control device used in this embodiment.

FIG. 3 is a front view of an infrared light receiving sensor of this embodiment.

FIG. 4 is a cross-sectional view of an infrared light receiving sensor of this embodiment.

FIG. 5 is a block diagram showing a configuration of an infrared light receiving circuit of this embodiment.

FIG. 6 is a circuit diagram showing a specific example of the infrared light receiving sensor of this embodiment.

FIG. 7 is a circuit diagram showing a specific circuit configuration of a comparator of this embodiment.

FIG. 8 is a perspective view illustrating a conventional turntable.

[Explanation of symbols]

 3 Rotating table 3a Movable table 4 Fixed base 5 Light receiving part 6 Remote control 7 Key 14 Shielding plate 17 Shielding wall 18,19 Infrared ray receiving sensor 22,23 Signal detection circuit 24 Comparator 25 Motor drive circuit 28 Motor 29 Identification circuit

Claims (4)

[Scope of utility model registration request] 1. A rotary base on which an audio device or a video device is mounted and which rotates, wherein a plurality of infrared light receiving sensors (18, 19) for detecting infrared light output from a remote controller and the plurality of infrared light receiving devices are provided. A movable base (3a) having a signal light receiving portion (5) on the front surface, which includes a light shielding wall (17) for shielding the sensors from each other, and a detection means for detecting a difference in light receiving amount received by each of the plurality of infrared light receiving sensors. And a rotating unit that selects and rotates a movable direction of the movable table according to a detection result of the detecting unit. 2. The light shielding wall has a shield plate (14) on the front surface for blocking the incidence of infrared light, and when the signal light receiving portion is viewed from the front, the plurality of infrared light receiving sensors are provided by the shield plate. The turntable according to claim 1, wherein the turntable is substantially half-shielded. 3. The turntable according to claim 1, wherein the remote control has a key (7) for instructing to turn the turntable toward the remote control. 4. The difference in the amount of received light detected by the detecting means of the rotating means becomes substantially equal to or less than a predetermined value in response to infrared light output from the remote controller by operating the key (7). The rotary table according to claim 3, wherein the rotary table is rotated by selecting a rotation direction of the movable table.