Wireless remote control device

1. Technical Field

The present disclosure relates to a wireless remote control device for controlling an electronic device.

2. Description of Related Art

In computer systems such as personal computer (PC), operators usually need to press a power button to turn the computer system on or press a reset button to reset the computer, which is inconvenient when the operator is far from the PC.

Many aspects of the embodiments can be better understood with references to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the embodiments. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.

FIG. 1 is a block view of an embodiment of a wireless remote control device for controlling an electronic device.

FIG. 2 is a circuit view of an embodiment of the switch module and the wireless transmission module.

FIG. 3 is a circuit view of the switch module and the wireless transmission module of FIG. 1 .

FIG. 4 is a circuit view of the switch module and the wireless transmission module of FIG. 1 .

FIG. 5 is a circuit view of the switch module and the wireless transmission module of FIG. 1 .

The disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings in which like references indicate similar elements. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean at least one.

In general, the word “module,” as used herein, refers to logic embodied in hardware or firmware, or to a collection of software instructions, written in a programming language, such as, for example, Java, C, or Assembly. One or more software instructions in the modules may be embedded in firmware, such as an EPROM. It will be appreciated that modules may comprise connected logic units, such as gates and flip-flops, and may comprise programmable units, such as programmable gate arrays or processors. The modules described herein may be implemented as either software and/or hardware modules and may be stored in any type of computer-readable medium or other computer storage device.

Referring to FIG. 1 , a wireless remote control device of an embodiment for controlling an electronic device (not shown) includes a switch module 100 , a wireless transmission module 200 , a wireless receiving module 300 and a control module 400 . The switch module 100 receives a +5V DC and outputs a first control signal. The wireless transmission module 200 receives the first control signal and encodes the first control signal to output. The wireless receiving module 300 receives the encoded first control signal and decodes the encoded first control signal to output. The control module 400 receives the decoded first control signal and outputs a second control signal to turn on/off or reset the electronic device.

Referring to FIG. 2 , the switch module 100 includes switches S 1 ˜S 3 . The switches S 1 ˜S 3 first terminals receives the +5V DC. The switches S 1 ˜S 3 second terminals are electrically connected to the wireless transmission module 200 for outputting the first control signal. The wireless transmission module 200 includes an encoding circuit 210 and an oscillator transmission circuit 220 . The encoding circuit 210 includes an encoding chip U 1 having data pins D 0 ˜D 2 and a code output pin Dout. The data pins D 0 ˜D 2 receives the first control signal from the second terminals of the switches S 1 ˜S 3 respectively. The encoding chip U 1 encodes the first control signal which is output at the code output pin Dout. The oscillator transmission circuit 220 includes a transistor T 1 , resistors R 1 and R 2 , a capacitor C 1 , an inductor L 1 and a crystal oscillator X 1 . A transistor T 1 base is electrically connected to the code output pin Dout via the resistor R 1 for receiving the encoded first control signal. The transistor T 1 base is grounded via the crystal oscillator X 1 . A transistor T 1 emitter is grounded via the resistor R 2 . A transistor T 1 collector receives the +5V DC via the inductor L 1 . The oscillator transmission circuit 220 mixes and oscillates the encoded first control signal which is output at the transistor T 1 collector via the capacitor C 1 .

Referring to FIG. 3 , the wireless receiving module 300 includes an amplifier circuit 310 and a decoding chip U 2 . The amplifier circuit 310 includes a transistor T 2 , resistors R 3 ˜R 10 , capacitors C 2 and C 3 , inductors L 2 and L 3 , and amplifiers A 1 and A 2 . A transistor T 2 collector is electrically connected to the transistor T 1 collector via the capacitor C 2 for receiving the encoded first control signal. A transistor T 2 emitter is grounded via the inductor L 2 and the resistor R 3 connected in series. The transistor T 2 collector receives the +5V DC via the inductor L 3 and the resistor R 4 connected in series. The transistor T 2 collector is electrically connected to an amplifier A 1 non-inverting input terminal via the inductor L 3 and the resistor R 5 in series. A transistor T 2 base is electrically connected to the amplifier A 1 non-inverting input terminal via the resistors R 6 , R 4 and R 5 in series. The transistor T 2 base is electrically connected to an amplifier A 1 inverting input terminal via the resistors R 6 and R 7 and the capacitor C 3 in series. An amplifier A 1 output terminal is electrically connected to an amplifier A 2 non-inverting input terminal. An amplifier A 2 inverting input terminal is grounded via the resistor R 8 , and is electrically connected to the transistor T 2 base via the resistors R 9 , R 4 and R 6 in series. The amplifiers A 1 and A 2 amplify the encoded first control signal which is output at an output terminal of the amplifier A 2 via the resistor R 10 . The decoding chip U 2 includes a code input pin Din and data pins E 0 ˜E 2 . The code input pin Din is electrically connected to the output terminal of the amplifier A 2 via the resistor R 10 for receiving the encoded first control signal. The decoding chip U 2 decodes the encoded first control signal which is output at the data pins E 0 ˜E 2 .

Referring to FIGS. 4 and 5 , the control module 400 includes micro controller U 3 and MOSFETs Q 1 and Q 2 . The micro controller U 3 includes data pins R 0 ˜R 2 , a power control signal output pin C 0 , a reset control signal output pin C 1 and indication signal output pins B 0 ˜B 2 . The data pins R 0 ˜R 2 are electrically connected to the data pins E 0 ˜E 2 for receiving the decoded first control signal. The micro controller U 3 outputs a second control signal at the power control signal output pin C 0 or the reset control signal output pin C 1 according to the decoded first control signal. The MOSFETs Q 1 and Q 2 grids are electrically connected to the power control signal output pin C 0 and the reset control signal output pin C 1 via the resistors R 11 and R 12 respectively for receiving the second control signal. The MOSFETs Q 1 and Q 2 sources are grounded. The MOSFETs Q 1 and Q 2 drains receive the +5V DC via the resistors R 13 and R 14 respectively.

The wireless remote control device further includes a transistor T 3 , a buzzer LS 1 , LEDs D 1 , D 2 and resistors R 15 ˜R 17 . A transistor T 3 base is electrically connected to the indication signal output pin B 0 via the resistor R 15 for receiving an indication signal. A transistor T 3 emitter is grounded. A transistor T 3 collector is electrically connected to a buzzer LS 1 cathode. A buzzer LS 1 anode receives the +5V DC voltage. The LEDs D 1 and D 2 cathodes are electrically connected to the indication signal output pins B 1 and B 2 respectively for receiving the indication signal. The LEDs D 1 and D 2 anodes receives the +5V DC voltage via the resistors R 16 and R 17 respectively. In one embodiment, the transistors T 1 ˜T 3 are NPN type transistors. The MOSFETs Q 1 and Q 2 are N-channel MOSFETs. An oscillating frequency of the crystal oscillator X 1 is 315 megahertz.

In use, the switches S 1 ˜S 3 are pressed by an external force to turn on/off or reset the electronic device. When a corresponding switch is pressed, the corresponding data pin of the encoding chip U 1 receives the +5V DC and is at a high voltage level. Assuming that logic 1 represents a high voltage level and logic 0 represents a low voltage level. In the practice, the switches S 1 ˜S 3 may be arranged in a plurality of ways. The operation on the electronic device is indicated for each possible arrangement as follows:

It is to be understood, however, that even though numerous characteristics and advantages of the embodiments have been set forth in the foregoing description, together with details of the structure and function of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.