JPS60246132A - Optical remote controller - Google Patents

Abstract

PURPOSE:To improve the operability by forming the 2nd optical communication line through optical space transmission from a section to be operated to an optical pocket remote control section and providing a display section to the optical pocket remote control section so as to constitute the circuit thereby displaying the operating state of the section to be operated and precluding the possibility of mis-operation. CONSTITUTION:In operating an operating switch 7, a control circuit 2 inputs the result and gives a digital code corresponding to the said operating switch 7 to a transmission circuit 3. The transmission circuit 3 applies electro-optic conversion to a signal fed from the control circuit 2 and transmits the result as an optical signal. A reception circuit 11 applies opto-electric conversion to the received optical signal and transmits the result to a control circuit 10. The control circuit 10 decides the operated switch and controls the load of a section 9 to be operated. Then a digital code representing the operating state of a load 15 of the section 9 to be operated is transmitted to a transmission circuit 13 during a silence period succeeding to the digital code. In operating the operation switch 7 of the optical pocket remote control section 1, the operating state of the section 9 to be operated corresponding thereto is displayed to a local display section 8 of the user.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to improvement of an optical remote control device using optical space transmission.

[Prior art]

In recent years, optical remote control devices that utilize optical propagation have been used in many products including home appliances such as televisions, audio systems, and VTRs. For example,
With a VTR, you can control V using the optical pocket remote control held in your hand.
Operations such as playing video tapes, fast forwarding and rewinding, etc. can be performed from a distance from the TR main unit. In these light remote control devices, only an operating switch is provided on the operating section, and a display section that indicates that the operating state corresponding to the operating switch has entered is provided on the operated section. To use the example of the VTR mentioned above, when the fast-forward switch on the optical pocket remote controller is operated and the operated part of the VTR enters the fast-forward reverse mode, a display indicating this will appear on the VTR's display. . Therefore, in order to confirm that the operation signal has been sent to the operated part and it has entered the specified operating state, it is necessary to operate the switch on the operating part at hand and then look at the display on the operated part located far away. There is a nuisance that should not be used. In addition, since the display of the operated part is viewed from a distance, depending on the display method, it may be difficult to check the display, and if you operate the switch at hand while looking at the display of the operated part, it may cause erroneous operation. Met.

As described above, although the current optical pocket remote control device has the advantage of being able to operate the operated section from a distance, it has had problems in terms of operability.

[Summary of the invention]

This invention was made in view of the above problems, and includes forming a second optical communication path from the operated section to the optical pocket remote control section, and providing a display section on the optical pocket remote control section to display the operating status of the operated section. By configuring the display to display the information, an optical remote control device with good operability is provided.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, 1 indicates an optical pocket remote control section, 2 is a control circuit provided in the optical pocket remote control section 1 and controls the transmission and reception of signals and a display section to be described later, and 3 transmits an optical signal to an operated section 9. The transmitting circuit includes a first light emitting element 4. Further, 5 is a receiving circuit that is controlled by the control port 62 and includes a second light-receiving element 6 and receives an optical signal from the operated section 9, 7 is an operation switch, and 8 indicates the operating state of the operated section 9. This is a display section using liquid crystal.

Reference numeral 9 denotes an operated section; 10 is a control circuit provided in the operated section 9 to control signal transmission/reception and load 15 of the operated section 9; 11 includes a first light receiving element 12; A receiving circuit receives optical signals from the remote controller 1, and a first optical communication path is formed between the receiving circuit 11 and the transmitting circuit 3 of the optical I-ket remote controller 1. Also,
13 is a transmitting circuit that includes a second light emitting element 14 and transmits an optical signal to the optical pocket remote controller 1;
A second optical communication path is formed between the receiving circuit 5 of the optical pocket remote controller 1 and the receiving circuit 5 of the optical pocket remote controller 1.

Next, the operation of the optical remote control device having such a configuration will be explained. When the operating switch 7 is operated, the control circuit 2 inputs this and sends a digital code corresponding to the operating switch 7 to the transmitting circuit 3. At this time again,
When transmitting a digital code multiple times in succession, there is a fixed time interval, that is, a non-transmission period, each time the digital code is sent to the transmitting circuit 3.The transmitting circuit 3 receives the digital code from the control circuit 2. The signal is converted electrically to optically and transmitted as an optical signal. For example, the disortal signal "l".

0'' is represented by the waveform shown in Figure 2, the digital code corresponding to a certain operation switch is a 4-bit code.
1010'', the optical signal waveform transmitted from the transmitting circuit 3 will be as shown in Fig. 3 <a). In this case, since the transmission is continuous, there is a non-transmission period for each transmission. In this way, the optical pocket remote control unit 1
The optical signal transmitted from the operating section 9 is received by the receiving circuit 11 of the operated section 9 .

The receiving circuit 11 performs optical-to-electrical conversion on the received optical signal and sends it to the control circuit 10 . The control circuit 1o determines the operated switch using the digital code sent from the receiving circuit 11, and controls the load 15 of the operated section 9 to a predetermined operating state corresponding to the operating switch 7. Then, during the non-signal period following the digital code, a digital code indicating the operating state of the load 15 of the operated section 9 is sent to the transmitting circuit 13. The transmitting circuit 13 converts the digital code from electric to optical and transmits it to the optical IJ momo 3fu 1. For example, if an optical signal as shown in Figure 3(a) is received, JH
m15 operation switch 7 digital code "1010"
”, and a code indicating the operating state, in this example a 2-bit code “10” as shown in FIG. 3(b), is transmitted during the no-signal period. The received optical signal is received by the receiving circuit 5 of the optical packet remote control unit 1.

The receiving circuit 5 performs optical-to-electrical conversion on the optical signal and sends it to the control circuit 2. The control circuit 2 determines the operating state of the load 15 of the operated section 9 from the received code and displays it on the display section 8. In this way, when the operation switch 7 of the optical pocket remote controller 1 is operated, the corresponding operating state of the operated section 9 is displayed on the display s8 at the user's hand, so that the operation of the operated section 9 at a distance can be controlled. There is no need to look at a display section (not shown) that indicates the status, improving operability and reducing erroneous operations.

Next, when the operating state of the operated section 9 changes regardless of the operation from the optical pocket remote control section 1,
If the rewind switch on the optical pocket remote control is set to rewind mode, when the rewind of this tape is completed, the VT
When the R main body is in a stopped state, the optical remote control device shown in this embodiment operates as follows.

That is, if a new change in the operating state occurs after the operated unit 9 transmits the code indicating the first operating state, a code indicating the new operating state N is automatically transmitted for a certain period of time from that point onwards. Send to. As this means, the control circuit 1
The optical pocket remote controller 1 receives the code and displays the new operating state on the display 8.

By the way, in the above embodiment, if the second optical communication path is disturbed by some disturbance, such as a hand or an object, the optical signal transmitted from the operated section 9 is transmitted to the optical pocket (IJ control section). 1 may not be received. In order to avoid this, the following configuration is adopted and will be explained as another embodiment.

That is, in this other embodiment, light? The remote control unit 1 is provided with a new switch, which is different from the operation switch 7 that controls the load of the operated unit 9, and which causes the operated unit 9 to transmit its operating state. Therefore, even if the above-mentioned code indicating the operating status cannot be received, by operating this newly installed switch, the operating status at that time can be transmitted and displayed. Become.

Further, in the above embodiment, a liquid crystal is used for the display section 8, but
Other display elements such as LEDs may also be used. However, since batteries are often used as the power source for optical pocket remote controllers, liquid crystals are optimal because of their low power consumption.

In the above embodiment, the optical signal waveform shown in FIG. The first and second
By configuring the optical communication channels using lights of different wavelengths, simultaneous transmission and reception becomes possible and the response speed becomes faster.

〔Effect of the invention〕

As described above, according to the optical remote control device of the present invention, the second optical communication path is formed from the operated section to the optical pocket remote control section by optical wall-to-wall transmission, and the display section is provided on the optical pocket remote control section. Since the operating state of the operated section is configured to be displayed, there is an effect that there is no fear of erroneous operation and that operability is improved.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an optical remote control device showing an embodiment of the present invention, Fig. 2 is a waveform diagram showing an example of the waveform of a deisotal signal of the same device, and Fig. 3 is a waveform diagram showing an example of the transmission/reception waveform. It is. l... Optical pocket remote control unit, 2, 1o... Control circuit, 3, 13... Transmission circuit, 4... First light emitting element, 5
．． DESCRIPTION OF SYMBOLS 11... Receiving circuit, 6-mount second light receiving element, 7. Operation switch, 8. Display section, 9.. Operating section, 12.
...First light receiving element, 14...Second light emitting element, 15.
··load. Agent Masuo Oiwa

Claims (3)

[Claims] (1) forming a first optical communication path through optical space transmission between a transmitter circuit having a first light emitting element provided in the optical pocket remote control unit and a receiving circuit having a first light receiving element provided in the operated unit; A transmitter circuit that transmits an operation switch signal for controlling the load from the original pocket remote control unit to the operated unit, and includes a transmission circuit having a second light emitting element provided in the operated unit and a second light emitting element provided in the optical pocket remote control unit. A second optical communication path is formed with a receiving circuit having two light-receiving elements to transmit the operating state of the operated section, and a display section for displaying the transmitted operating state is connected to the former port. An optical remote control device characterized by being installed in an IJ control unit. (2) The optical mode according to claim 1, wherein the second optical communication path is configured using light having a wavelength different from that of the first optical communication path. control device. (3) The optical remote control according to claim 1 or 2, wherein the optical pocket remote control unit is provided with a switch that transmits its operating state to the operated unit. (4) The optical remote control device according to any one of claims 1 to 3, wherein the display section is formed using liquid crystal.