KR19990085305A - Wireless Data Transceiver - Google Patents

Abstract

The wireless data transmission / reception apparatus of the present invention modulates the data input from the first controller and the first controller to encode each input signal into corresponding data and output the data having different transmission rates as a plurality of input signals are input. And a transmitter comprising a transmitter configured to output an RF signal, a receiver configured to demodulate an RF signal input from the transmitter, and a second controller configured to decode the data inputted from the receiver and determine the type of data based on the transmission speed. It is composed of a wireless data transmission and reception apparatus.

Description

Wireless data transmission and reception device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless data transmission and reception apparatus. In particular, a wireless data transmission and reception apparatus that can be used without limitation of distance by transmitting an input signal of an input device such as a keyboard or a mouse of a computer as an RF signal and receiving the signal from a receiving apparatus connected to the computer It is about.

Generally, a personal computer (PC) such as a desktop computer is provided with a plurality of input devices such as a keyboard and a mouse. Since such an input device is connected to the PC main body through a signal input line, there is a limitation of space and distance when using a PC due to the limitation of the signal input line length.

In order to overcome this limitation, a wireless keyboard using infrared rays has been proposed. However, when the transmitting side of the keyboard and the receiving side of the PC deviate from a predetermined angle or more, an error occurs in the data and detects the infrared rays. Since the receiving side to which the signal is input is sensitive to light, data errors occur due to the lighting of a home or office using a PC. In addition, when there is an obstacle such as office supplies between the transmitting side of the keyboard and the receiving side of the PC side, the infrared ray is prevented from proceeding, and thus a command is not input.

In recent years, since software such as Windows is mainly used as a PC operating system, a pointing device such as a mouse as well as a keyboard has been highlighted as a command input device of a PC. . Therefore, in the case of using the wireless input device, there is a problem in that the signals of the mouse as well as the keyboard must be wirelessly input. In a conventional wireless input device that inputs commands of a keyboard and a mouse by using infrared rays, a receiver for detecting a signal transmitted from each input device is mounted, and a process for separately processing a signal of each input device input through the receiver. Since the means must be installed, not only the manufacturing cost increases, but also the processing speed of the PC becomes slow because the signal processing becomes complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and an object of the present invention is to provide a wireless data transmission / reception apparatus that can be used without limitation of distance by transmitting an input signal of a keyboard and a pointing device as an RF wireless signal and receiving the same at a receiving apparatus. It is done.

Another object of the present invention is to provide a wireless data transmission and reception device having a simple structure and an improved processing speed by determining an input device to which an input signal is transmitted by changing the transmission speed of data transmitted from a plurality of input devices and processing the same.

It is still another object of the present invention to provide a wireless input device capable of wirelessly inputting data by transmitting data as an RF signal from a transmitter and receiving the signal at a receiver connected by wire to a PC.

In order to achieve the above object, the wireless data transmission and reception apparatus of the present invention is a first control unit for encoding the input signals of the plurality of input means to the corresponding data and then outputting the data having different transmission rates, the first control unit A PLL for outputting a control signal according to control of a voltage, a voltage controlled oscillator for outputting an oscillation signal according to a control signal input from the PLL, a transmitter for modulating data input from the controller and outputting an RF signal from the input means, and When no signal is input, a signal is input from the first controller to turn off the transmitter, a transmitter configured to demodulate the RF signal input from the transmitter, a receiver to output data, and decode the data input from the receiver. A receiver comprising a second control unit for determining the type of data by the transmission speed It is sex.

According to a second aspect of the present invention, there is provided a wireless input device comprising: a plurality of input means, a first controller configured to encode signals input from the input means into data having different transmission rates, respectively; A transmission unit for FSK modulation and outputting the data input from the first control unit as an RF signal, a reception unit for receiving and outputting FSK demodulation after receiving data transmitted from the transmission unit, and data according to the transmission speed of the data input from the reception unit It is composed of a second control unit for determining the type of the decoding and outputting to the PC after decoding.

The input means is composed of a keyboard, a mouse, and the like. The data transfer speed by keyboard operation is about 2400 pbs and the data transfer speed by mouse operation is about 4800 pbs or 9600 pbs. The second controller and transmitter for encoding and transmitting data may be embedded in the keyboard and the mouse, respectively, or may be embedded in only one of the keyboard and the mouse, and then connected to the keyboard and the mouse by wire. The receiving unit and the second control unit for receiving the RF signal are installed outside the PC and connected to the PC by wire, but may be mounted inside the PC.

1 is a view showing the concept of a wireless data transmission and reception apparatus according to the present invention.

2 is a block diagram of a wireless data transmission and reception apparatus according to the present invention.

3 is a view showing a keyboard and a mouse connected by a connection cable.

4 is a diagram showing a wireless data transmitting and receiving device in which a receiving unit is connected by a connection cable to a PC main body.

Explanation of symbols on the main parts of the drawings

1: PC 2: keyboard

3: mouse 10: transmitter

11: transmitting side control unit 12: transmitting side PLL

13 transmitter voltage controlled oscillator 15 transmitter

18: transmitting side antenna 20: receiver

21: transmitting side controller 22: transmitting side PLL

25: transmitter 26: LPF

28: receiving side antenna 31,32: wired connection jack

35,36: connection cable

1 is a view showing a computer equipped with a wireless data transmission and reception apparatus according to the present invention. As shown in the figure, in a conventional PC, a keyboard and a mouse are connected to the PC main body by a data input line, while in the present invention, data by operation of a keyboard 2 and a pointing device such as a mouse 3 is wirelessly connected. It is input to the PC main body 1. The keyboard 2 and the mouse 3 have a built-in transmitter for transmitting data as an RF signal, and a receiver for receiving the transmitted RF signal is formed inside or outside the PC main body 1.

The transmitting unit may be embedded in each of the keyboard 2 and the mouse 3 so as to transmit key input and mouse input to the receiving unit, respectively, and the receiving unit may be embedded in either the keyboard 2 or the mouse 3 and the keyboard 2 And the mouse 3 can be connected by wire to transmit data.

In addition, the receiving unit may be incorporated into the PC main body, of course, it is also possible to install the receiving apparatus separately from the outside and connect to the PC main body by wire.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 2 to 4.

2 is a block diagram of a wireless data transmission and reception apparatus according to the present invention. In the figures, reference numerals 10 and 20 denote transmitters and receivers, respectively. The transmitter 10 may be embedded in each of the keyboard 2 and the mouse 3, or may be embedded in only one of the keyboard 2 or the mouse 3. In addition, the receiver 20 may be embedded in the computer main body 1, or may be installed externally and connected to the computer main body 1 by wire.

The transmitter 10 determines an input signal input from the keyboard 2 or the mouse 3 to determine where the signal is input, and then encodes each input signal into corresponding data and outputs the encoded data. A PLL 12 for outputting a control signal in accordance with a signal input from the control unit 11, a control side 11, and a voltage control for inputting a control signal from the PLL 12 to output an oscillation signal. The oscillator (VCO) 13, and the data and oscillation signals inputted from the control unit 11 and the voltage controlled oscillator 13, respectively, are modulated by a frequency shifting key (FSK), and are output as RF signals through the transmitting antenna 18. The transmitter 15 is comprised. In addition, when the transmitter 10 has a built-in power switch 16, and there is no input from the keyboard 2 or the mouse 3, a signal is input from the controller 11 to turn off the power of the transmitter 15. To save. The division of the data by the operation of the keyboard 2 and the mouse 3 is made by varying the transmission speed of each data.

Two wired connection jacks are formed in the keyboard 2 and the mouse 3 in which the transmitter 10 is built. The keyboard 2 and the mouse 3 are connected to each other through this connection jack, and the keyboard 2 and the mouse 3 can be directly connected to the PC 1 by wire.

The receiver 20 includes a receiver 25 for receiving an RF signal input through the receiving antenna 28 and performing FSK demodulation, and a low pass filter (LPF) 26 for filtering data output from the receiver 25. In addition, it is determined whether the data input from the LPF 26 is the data by the operation of the keyboard 2 or the operation of the mouse 3, the data is decoded, and the data is stored in the PC 1. It consists of a receiving side control unit 21 to transmit to. The determination of the data in the control unit 21 is made by the transmission speed of the received data.

In the wireless data transmitting / receiving apparatus having the above-described configuration, when a user operates the keyboard 2 or the mouse 3, an operation signal of the keyboard 2 or the mouse 3 is input to the control unit 11 of the transmitter 10. Then, data and signals corresponding to the operation signal 11 are output from the control unit 11. In this case, the transmitter 10 may be embedded in the keyboard 2 or the mouse 3, respectively, but as shown in FIG. 3, the transmitter 10 may be embedded in the keyboard 2 and then connected to the keyboard 2 through the connection cable 8. It is also possible to connect the mouse 3. In other words, when operating a key of the keyboard 2, the operation signal is directly input to the control unit 11 of the receiver 10 having the built-in signal, but when operating a pointing device such as a mouse 3, the input signal is connected to the connection cable. It is input to the control part 11 built in the keyboard 2 via (8). In addition, the transmitter 10 is built into the mouse 3, and the keyboard 2 and the mouse 3 are connected through the connection cable 8 so that an operation signal is transmitted through the connection table 8 when the keyboard 3 is operated. It is also possible to input to the control unit 11 built in the mouse (3).

The control unit 11 of the transmitter 10 encodes the input data and outputs the encoded data to the transmitter 15, and simultaneously outputs a control signal to the PLL 12. The coded signal output from the controller 11 varies in data transmission speed according to the operation signal of the keyboard 2 and the operation signal of the mouse 3. When the operation signal of the keyboard 2 is input, data having a transmission speed of about 2400 pbs is output. When the operation signal of the mouse 3 is input, data having a transmission speed of about 4800 pbs or 9600 pbs is output. Contrary to the above, the transmission speed of the data by the operation of the keyboard 2 can be made larger than the transmission speed by the operation of the mouse 2. That is, it is also possible to set the transfer rate by the operation of the mouse 2 to about 2400 pbs and the transfer rate by the operation of the keyboard 3 to about 4800 bps or 9600 pbs.

The reason why the data transfer speed is different is to determine whether the corresponding data is data by operation of the keyboard 2 or data by operation of the mouse 3. Therefore, it is not necessary to limit the data transfer rate by the operation of the keyboard 2 and the mouse 3 to a specific value as described above, and the speeds may be different.

The PLL 12 controls the voltage controlled oscillator 13 according to the control signal of the controller 11, and the oscillation signal is output to the transmitter 15 under the control of the PLL 12 in the voltage controlled oscillator 13. . The transmitter 15 modulates the input data into the FSK and then outputs the data to the outside through the antenna 18. The antenna 18 depends on the built-in location of the transmitter 10. That is, when the transmitter 10 is built in the keyboard 2, it is installed in the keyboard 2, and in the case in which the transmitter 10 is built in the mouse 3, the transmitter 10 is installed in the keyboard 2. If the mouse 3 is built in both sides, it is installed in both sides.

The signal transmitted from the transmitter 10 is inputted to the receiver 25 through the antenna 28 of the receiver 28 and then filtered by the LPF 26 after FSK demodulation. The data filtered by the LPF 26 is inputted to the control unit 21 and decoded after it is determined whether the data is data by the manipulation of the keyboard 2 or the operation of the mouse 3 according to the data transmission speed. . The decrypted data is input to the PC 1 through different paths depending on whether the data is data by the operation of the keyboard 2 or data by the operation of the mouse 3.

As shown in FIG. 4, the data by the operation of the keyboard 2 and the data by the operation of the mouse 3 are respectively connected to two connection cables 35 and 36 connecting the receiver 20 and the PC 1. It is input to the PC 1 through. The two connection cables 35 and 36 correspond to data by the operation of the keyboard 2 and data by the operation of the mouse 3, respectively. The connection cables 35 and 36 are connected to jacks to which the cable of the keyboard 2 and the cable of the mouse 3 are connected, respectively, in a general PC.

Therefore, since the wireless data transmission and reception apparatus of the present invention can be used by connecting to a conventional PC used in the related art, it is possible to wirelessly input data to a PC simply by connecting to a PC that has been purchased and used continuously. In addition, as mentioned above, the wireless receiving device can be incorporated in a PC.

In addition, the wireless data transmission and reception apparatus of the present invention can also be used by wire as shown in FIG. Since the keyboard 2 and the mouse 3 are provided with jacks 31 and 32 for wired connection, respectively, a cable may be connected to the jacks 31 and 32 and a jack of a PC when the cable is used. . At this time, although not shown in the figure, the keyboard 2 and the mouse 3 has a built-in wireless / wired switch can be selected by the user wireless and wired. The wireless / wired switch generally has a structure in which a connection cable is connected to the jacks of the keyboard 2 and the mouse 3 and switched from wireless to wired at the same time, but outside the keyboard 2 and the mouse 3. It is also possible to switch the switching switch when the user needs to be equipped with a switching button.

As described above, the user inputs the data by operating the keyboard and mouse to the PC by transmitting and receiving the RF data as an RF signal, so that the user is not restricted by distance or environment. In addition, since the wireless data transmission and reception apparatus can be simply connected to a general PC and used, it is easy to use and greatly reduces the burden on the consumer.

Claims (11)

A first controller which encodes each input signal into corresponding data and outputs data having different transmission rates as a plurality of input signals are input, and a transmitter which modulates the data input from the controller and outputs the RF signal Transmitter consisting of; And And a receiver for demodulating the RF signal input from the transmitter and outputting data, and a second controller for decoding the data input from the receiver and determining the type of data based on the transmission rate. The method of claim 1, A phase locked loop (PLL) installed in the transmitter and outputting a control signal according to a control of a first controller; An oscillator for outputting an oscillation signal according to the control signal of the PLL; And And a low pass filter installed in the receiver and filtering the data output from the receiver and outputting the filtered data to the second controller. The wireless data transmission / reception apparatus according to claim 1, further comprising a power switch for inputting a signal from the first controller when the signal is not input into the transmitter to turn off the transmitter. A plurality of input means; A first control unit embedded in the input unit and encoding the signals input from the input unit into data having different transmission rates; A transmitter for outputting an RF signal by modulating the data input from the first controller; A receiver which receives the data transmitted from the transmitter, performs FSK demodulation, and outputs the demodulated data; And a second control unit which decodes the data inputted from the receiving unit, determines the type of data, and outputs the data to a computer. The method of claim 4, wherein A PLL (Phase Locked Loop) connected to the first controller and outputting a control signal according to the control of the first controller; An oscillator for outputting an oscillation signal according to the control of the PLL; And And a low pass filter connected to the receiver for filtering data output from the receiver and outputting the filtered data to the second controller. 5. The wireless input device of claim 4, further comprising a first antenna and a second antenna attached to the input means and the receiver, respectively, for transmitting and outputting data. 7. A wireless input device according to claim 6, wherein the transmitter is mounted only on one of the plurality of input means. 8. The wireless input device of claim 7, wherein the plurality of input means are wired to each other. The wireless input apparatus of claim 8, wherein data corresponding to signals input from the plurality of input means have different transmission speeds. 5. The wireless input device of claim 4, wherein the receiver and the second controller are incorporated in a computer. 5. The wireless input apparatus according to claim 4, further comprising connection jacks formed on the plurality of input means, respectively, for connecting the input means with a computer by wire.