KR200281004Y1 - Laser Pointer - Google Patents

Abstract

The present invention relates to a laser pointer, and to a laser pointer using a page up / down function in the form of a wireless remote control in a presentation function. The present invention can have a more efficient presentation by wirelessly controlling the laser pointer itself instead of controlling the page up / down function which is most used in the presentation.

Description

Laser Pointer

The present invention relates to a laser pointer having a computer mouse wheel function, and more particularly, to a laser pointer performing a page up / down function of a computer mouse through a radio frequency (RF) signal.

Recently, it is often seen in academic conferences, seminars, lectures, lectures, etc. It is a form of presentation using a presentation program, that is, a microcomputer's application, PowerPoint, which is then displayed on a projector and explained using a laser pointer. Currently, the presenter mainly explains and performs page up / down through key operations on the computer.

Of course, although the projector has an infrared remote control, very few people use it. The use of a remote control with a laser pointer is cumbersome and the infrared method is directional. Wireless mouse also has a problem in that it is inconvenient to use because of the above hassle.

An object of the present invention devised to solve the above problems is to install a page up / down function on the laser pointer, a laser that can freely manipulate the page up / down function as a radio frequency (Radio Frequency) signal using the laser pointer In providing a pointer.

1a and 1b is a laser pointer system of the present invention

2A and 2B are block diagrams of a laser pointer system according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10 laser pointer 11 laser hole

12: laser module 13: laser button

14, 30: wireless transmitter 15, 16, 31, 32: page up / down button

17: battery 22, 40: wireless receiver

23, 42: wireless receiver 24: controller

25: USB connector 26: USB port

27: PS / 2 port 28: computer (PC or laptop)

29: PS / 2 Converter 33: Encoder

34: radio transmitter 35, 41: antenna

43: microcontroller 44: mouse controller

46: controller 100: transmitter

200: receiver

The laser pointer of the present invention for achieving the above object is a laser module for oscillating a laser beam by a laser button, a laser hole for guiding the laser beam, a button for generating a page up / down control signal, generated by the button A transmitter including an encoder for converting the converted signal into serial data, and a wireless transmitter for modulating the serial data and transmitting the serial data as a wireless signal, an LED indicating an ID setting state and a reception state of the transmitted signal, and receiving the wireless signal. And a receiver including a wireless receiver for demodulating the serial data, a controller for converting the serial data into a mouse input signal, and a USB connector for connecting to a USB port of a computer.

The laser point of the present invention does not need to be considered because there is almost no collision probability between several transmitters. However, when a plurality of transmitters are used in close proximity, it is necessary to prevent the transmitters from being operated by control signals of other transmitters. Different devices can use different frequencies to avoid such interference, but the cumbersome set of frequency used and the cost of multichannel transmit ICs are relatively high.

Therefore, IC is used to transmit a fixed channel. In this case, each transmitter / receiver assigns a unique ID to the encoder of the transmitter so that the receiver operates only for a unique ID, and accordingly, the receiver operates only for one unique ID. Should be programmed. Thus, the transmitter should always transmit the data with ID and page up / down commands attached to it, and the receiver should program the receiver to receive and process only the page up / down commands with the first recognized ID when decoding such data. You lose.

The ID is assigned to several or more identical IDs that are received for the first time after the receiver is mounted on the computer and is displayed on the ID LEDs to indicate this ID setting status. In addition, the page up / down command is configured to be displayed on the command LED at the moment of receiving the command so that the correct reception can be confirmed.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1A and 1B are diagrams illustrating a laser pointer system having a structure of a transmitter and receiver according to the present invention. The laser pointer system of the present invention is largely based on a radio of the laser pointer 10 and the receiver 200 of the transmitter 100. The receiver 20 is divided.

As shown in FIG. 1A, the laser pointer 10 of the transmitter 100 includes a laser module 12 for oscillating a laser by a laser button 13, a laser hole 11 for guiding a emitted laser beam, and a presentation. Button 15, 16 for generating page up / down control signals for the content displayed by the application program, and signals generated by the buttons 15, 16 are converted to serial data and modulated. And a battery 17 for supplying power, and a radio transmitter 14 for transmitting a radio signal in the ˜900 MHz band.

As shown in FIG. 1B, the radio receiver 20 of the receiver 200 includes an LED 21 indicating the ID setting state and a reception state for the transmitted signal, and a page up / down signal wirelessly transmitted from the laser pointer 10. Connected to the USB port 26 of the controller 24 and the computer (PC or notebook) 28 which converts the serial data inputted from the wireless receiver 23, the wireless receiver 23 into a mouse input signal. It consists of a USB connector (25) for the purpose. Here, in order to connect to the PS / 2 port 27 of the computer 28, a separate PS / 2 converter 29 may be used in combination with the USB connector 25.

2A and 2B are detailed block diagrams illustrating a wireless transmitter of a transmitter and a wireless receiver of a receiver. The wireless transmitter 30 converts signals generated by the page up / down buttons 31 and 32 into serial data. 33) and a radio transmitter 34 for transmitting a radio signal through the antenna 35 by modulating serial data.

The wireless receiver 40 is composed of a wireless receiver 42 and a controller 46 for receiving and demodulating a radio signal through the antenna 41, the controller 46 is input to the demodulated signal from the radio receiver 42 And a microcontroller 24 for determining whether or not to decode the input demodulated signal and a mouse controller 44 for converting the data into USB and PS / 2 data formats.

Referring to the interaction between the radio transmitter of the transmitter and the radio receiver of the receiver in detail as follows.

In general, an operation of a wheel mouse's wheel movement detects a time difference of a signal trigger using a photo coupler and sends the information to a computer.

However, as shown in FIG. 2A, the laser pointer 10 of the present invention transmits data for the enable signals of the page up / down buttons 31 and 32 instead of the mouse wheel and the photo coupler. 33) converts the serial data into serial data, modulates the serial data in the radio transmitter 34, and sends the radio data wirelessly through the antenna 35. At this time, the encoder 33 inserts a predetermined number of bits (20 bits) representing the unique ID of the laser pointer 10 in the process of encoding the enable signals input from the page up / down buttons 31 and 32.

As shown in FIG. 2B, the radio receiver 40 of the receiver receives and decodes the radio signal generated from the laser pointer 10 at the radio receiver 42 through the antenna 41 to store 4 bytes of data in the controller 46. Will be sent to the microcontroller 43. The microcontroller 43 recognizes the page control command and generates the same signal as the trigger signal generated by the photo coupler and sends it to the mouse controller 44. The mouse controller 44 receiving the simulated signal is regarded as a signal generated by the manipulation of the scroll switch in the 3D mouse and transmits the page up / down signal to the computer through the USB or PS / 2 port 45. .

Here, the wireless receiver 40 is implemented in the form of a mouse controller and a microcontroller for stable operation, but can be programmed to process the mouse controller function using one microcontroller, the microcontroller 43 is wireless reception If one data is a unique ID registered in the corresponding radio receiver 40, and if the registered unique ID, the page up / down command is distinguished and the corresponding data is transmitted to the computer.

In addition, the wireless receiver 40 registers the unique ID by storing the unique ID of the laser pointer 10 first input after power is applied to the register. That is, the wireless receiver 40 registers the USB or PS / 2 port of the computer. After the connection is made to (45), any button included in the laser point 10 is enabled for a predetermined time, and when the unique ID of the laser pointer 10 is registered in the radio receiver 40, the radio receiver 40 is reset. Until then, only the data including the unique ID registered for the first time is processed.

Therefore, the user can use the laser pointer 10 according to the present invention as one set for any radio receiver 40. In addition, since the laser point system according to the present invention is a wireless communication method, in addition to the projector connection computer used by the presenter, a single laser pointer 10 may be used for presentation to the audience through a plurality of laptop computers, such as a notebook that the audience has. ) Can transmit and present the same data to a plurality of computers that are within a predetermined radius capable of wireless communication and to which the receiver 200 is connected.

Laser point according to the present invention is provided with a wireless transmitter and receiver (100, 200) can be accurate regardless of the distance and obstacles.

The present invention freely manipulates the page up / down function using the laser pointer, eliminating the hassle of coming to the computer to perform the page up / down, and providing more effective conferences, seminars, lectures, and lectures. In addition, by using a wireless transmitter and receiver can be operated accurately regardless of the distance and obstacles, there is an advantage that can be attached to the USB or PS / 2 port of the computer.

Claims (7)

A laser module for oscillating a laser beam by a laser button, A laser hole for guiding the laser beam, Button for generating page up / down control signal, A transmitter including an encoder for converting a signal generated by the button into serial data, and a wireless transmitter for modulating the serial data and transmitting the serial data as a wireless signal; LED indicating ID setting status and reception status for transmitted signal, A radio receiver for demodulating the serial data by receiving the radio signal; A controller for converting the serial data into a mouse input signal, and A laser pointer comprising a receiver including a USB connector for connecting to a USB port of a computer. The method of claim 1, The transmitter further comprises a battery for supplying power to the laser pointer. The method of claim 1, The controller is a laser pointer, characterized in that consisting of a microcontroller and a mouse controller. The method of claim 3, wherein And the microcontroller determines whether a demodulated signal is input from the radio receiver and decodes the input demodulated signal. The method according to claim 3 or 4, The micro-controller processes the data received from the transmitter to generate a waveform of the same shape as the waveform from the wheel operation of the mouse. The method of claim 3, wherein And the mouse controller converts the data into USB and PS / 2 data formats. The method of claim 1, And a PS / 2 converter coupled to the USB connector for connection to a PS / 2 port of a computer for use.