CN201716682U

CN201716682U - Wireless power-supply wireless keyboard

Info

Publication number: CN201716682U
Application number: CN2010202657068U
Authority: CN
Inventors: 孙杰; 陈晓春; 佘红红
Original assignee: Jiangyin Tianheng Computer Information Technology Co Ltd
Current assignee: Jiangyin Tianheng Computer Information Technology Co Ltd
Priority date: 2010-07-20
Filing date: 2010-07-20
Publication date: 2011-01-19
Anticipated expiration: 2020-07-20

Abstract

The utility model relates to a wireless power-supply wireless keyboard, comprising a wireless keyboard receiver (1) and a wireless keyboard main body (2), wherein the wireless keyboard receiver (1) comprises a USB interface (1.1) and a wireless power transmission module (1.2) and the wireless power transmission module (1.2) comprises an oscillator (1.2.1), a power amplifier (1.2.2) and an electromagnetic wave transmission circuit (2.1.1); the wireless keyboard main body (2) comprises a wireless power receiving module (2.1) and the wireless power receiving module (2.1) comprises an electromagnetic wave receiving circuit (2.1.1), a rectification circuit (2.1.2), a filter circuit (2.1.3) and a voltage stabilizing circuit (2.1.4). The wireless power-supply wireless keyboard has features of comfort and convenient use, reduced use cost of the consumer and reduced environmental pollution.

Description

The Wireless Keyboard of wireless power

(1) technical field

The utility model relates to a kind of Wireless Keyboard, especially relates to a kind of Wireless Keyboard that utilizes electromagnetic wave to carry out wireless power.

(2) background technology

Keyboard, as one of most important input equipment of PC (PC), along with operating system extensively adopts graphical interfaces, keyboard is the important effect of play more and more in various application programs, and common wired keyboard is because the distance of line is limited, and the user can not the remote-controlled operation computer; And aspect carrying, data line is tied a knot easily, is inconvenient to carry, and therefore causes the dirigibility of wired keyboard to be had a greatly reduced quality.Along with people increasing day by day to working environment and simple operation requirement, to the continuous growth of " moving " demand, the popularizing of mobile devices such as notebook, wired keyboard can not satisfy people for wireless pursue freedom, under the promotion of this demand, Wireless Keyboard has been born.Wireless Keyboard is divided into keyboard itself and receiver two parts, keyboard itself is equipped with infrared ray or transmitting set, receiver is connected to the PS-2 port or the USB port of personal host computer by line, during operation keyboard, information will be by infrared ray or radio wave transmissions to personal host computer.At present, the Wireless Keyboard on the market adopts battery type that the energy is provided more, and this has increased consumer's use cost greatly, simultaneously, has also caused the pollution of refuse battery for environment.

(3) summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of and uses comfortable, convenient and can reduce consumer's use cost, reduce the Wireless Keyboard of the wireless power of environmental pollution.

The purpose of this utility model is achieved in that a kind of Wireless Keyboard of wireless power, described keyboard includes Wireless Keyboard receiver and Wireless Keyboard body, described Wireless Keyboard receiver includes USB interface and wireless power transmitter module, described wireless power transmitter module includes oscillator, power amplifier and electromagnetic wave radiating circuit, described wireless power transmitter module carries out power taking by the 5V line on the USB interface, and the 5V high level is radiate electric power by the electromagnetic wave radiating circuit behind oscillator and power amplifier with the electromagnetic wave form;

Described Wireless Keyboard body includes the wireless power receiver module, described wireless power receiver module includes electromagnetic wave receiving circuit, rectification circuit, filtering circuit and mu balanced circuit, the electromagnetic wave that described electromagnetic wave receiving circuit gives off the electromagnetic wave radiating circuit converts higher-order of oscillation electric current to, this higher-order of oscillation electric current is converted to direct current through rectification circuit and filtering circuit, and this direct current is exported high level after the mu balanced circuit voltage stabilizing.

The Wireless Keyboard of the utility model wireless power, described Wireless Keyboard receiver also includes decoding circuit and RF receiver, described decoding circuit and RF receiver all carry out power taking by the 5V line on the USB interface, and described RF receiver links to each other with the data line of USB interface through decoding circuit;

Described Wireless Keyboard body also includes keyboard testing circuit, coding circuit and RF transmitter, described wireless power receiver module is powered to keyboard testing circuit, coding circuit and RF transmitter, and described keyboard testing circuit is emitted to detected keyboard displacement and the encoded circuit of key information and RF transmitter the RF receiver of Wireless Keyboard receiver.

The beneficial effects of the utility model are:

Owing to adopt electromagnetic wave wireless power technology, in the use of Wireless Keyboard, need not to re-use battery, not only alleviated the weight of keyboard, its comfortableness and convenience have been increased, and owing to do not re-use battery, the user no longer needs frequently to buy battery, has reduced user's use cost, has reduced the pollution of battery to environment.

(4) description of drawings

Fig. 1 is the utility model circuit structure block diagram.

Fig. 2 is the utility model wireless power transmitter module circuit structure block diagram.

Fig. 3 is the utility model wireless power receiver module circuit structure block diagram.

Among the figure:

Wireless Keyboard receiver 1, Wireless Keyboard body 2;

Usb 1 .1, wireless power transmitter module 1.2, decoding circuit 1.3, RF receiver 1.4;

Wireless power receiver module 2.1, keyboard testing circuit 2.2, coding circuit 2.3, RF transmitter 2.4;

Oscillator 1.2.1, power amplifier 1.2.2, electromagnetic wave radiating circuit 1.2.3;

Electromagnetic wave receiving circuit 2.1.1, rectification circuit 2.1.2, filtering circuit 2.1.3, mu balanced circuit 2.1.4.

(5) embodiment

Referring to Fig. 1, the utility model relates to a kind of Wireless Keyboard of wireless power, described keyboard includes Wireless Keyboard receiver 1 and Wireless Keyboard body 2, described Wireless Keyboard receiver 1 includes usb 1 .1, wireless power transmitter module 1.2, decoding circuit 1.3 and RF receiver 1.4, described wireless power transmitter module 1.2, decoding circuit 1.3 and RF receiver 1.4 all carry out power taking by the 5V line on the usb 1 .1, described RF receiver 1.4 links to each other through the data line of decoding circuit 1.3 with usb 1 .1, described wireless power transmitter module 1.2 includes oscillator 1.2.1, power amplifier 1.2.2 and electromagnetic wave radiating circuit 1.2.3, the 5V high level is radiate electric power by electromagnetic wave radiating circuit 1.2.3 behind oscillator 1.2.1 and power amplifier 1.2.2 with the electromagnetic wave form; Described Wireless Keyboard body 2 includes wireless power receiver module 2.1, keyboard testing circuit 2.2, coding circuit 2.3 and RF transmitter 2.4,2.1 pairs of keyboard testing circuits 2.2 of described wireless power receiver module, coding circuit 2.3 and RF transmitter 2.4 are powered, described keyboard testing circuit 2.2 is emitted to detected keyboard displacement and the encoded circuit 2.3 of key information and RF transmitter 2.4 the RF receiver 1.4 of Wireless Keyboard receiver 1, described wireless power receiver module 2.1 includes electromagnetic wave receiving circuit 2.1.1, rectification circuit 2.1.2, filtering circuit 2.1.3 and mu balanced circuit 2.1.4, described electromagnetic wave receiving circuit 2.1.1 converts the electromagnetic wave that electromagnetic wave radiating circuit 1.2.3 gives off to higher-order of oscillation electric current, this higher-order of oscillation electric current is converted to direct current through rectification circuit 2.1.2 and filtering circuit 2.1.3, and this direct current is exported the 5V high level after mu balanced circuit 2.1.4 voltage stabilizing.

Claims

1. the Wireless Keyboard of a wireless power, it is characterized in that: described keyboard includes Wireless Keyboard receiver (1) and Wireless Keyboard body (2), described Wireless Keyboard receiver (1) includes USB interface (1.1) and wireless power transmitter module (1.2), described wireless power transmitter module (1.2) includes oscillator (1.2.1), power amplifier (1.2.2) and electromagnetic wave radiating circuit (1.2.3), described wireless power transmitter module (1.2) carries out power taking by the 5V line on the USB interface (1.1), and the 5V high level is radiate electric power by electromagnetic wave radiating circuit (1.2.3) behind oscillator (1.2.1) and power amplifier (1.2.2) with the electromagnetic wave form;

Described Wireless Keyboard body (2) includes wireless power receiver module (2.1), described wireless power receiver module (2.1) includes electromagnetic wave receiving circuit (2.1.1), rectification circuit (2.1.2), filtering circuit (2.1.3) and mu balanced circuit (2.1.4), described electromagnetic wave receiving circuit (2.1.1) converts the electromagnetic wave that electromagnetic wave radiating circuit (1.2.3) gives off to higher-order of oscillation electric current, this higher-order of oscillation electric current is converted to direct current through rectification circuit (2.1.2) and filtering circuit (2.1.3), and this direct current is exported high level after mu balanced circuit (2.1.4) voltage stabilizing.

2. a kind of Wireless Keyboard of wireless power according to claim 1, it is characterized in that: described Wireless Keyboard receiver (1) also includes decoding circuit (1.3) and RF receiver (1.4), described decoding circuit (1.3) and RF receiver (1.4) all carry out power taking by the 5V line on the USB interface (1.1), and described RF receiver (1.4) links to each other through the data line of decoding circuit (1.3) with USB interface (1.1);

Described Wireless Keyboard body (2) also includes keyboard testing circuit (2.2), coding circuit (2.3) and RF transmitter (2.4), described wireless power receiver module (2.1) is powered to keyboard testing circuit (2.2), coding circuit (2.3) and RF transmitter (2.4), and described keyboard testing circuit (2.2) is emitted to detected keyboard displacement and the encoded circuit of key information (2.3) and RF transmitter (2.4) the RF receiver (1.4) of Wireless Keyboard receiver (1).