KR20030094580A - Laser pointing system - Google Patents

Abstract

PURPOSE: A laser pointing system is provided to effectively give a lecture by freely operating the page up/down function in a wireless with utilizing the laser pointer. CONSTITUTION: A laser pointing system includes a laser pointer transmitter and a receiver. The laser pointer transmitter includes a laser module for oscillating the laser beam, a laser hole for guiding the laser beam, a pair of page up/down buttons and a wireless transmitting unit for transmitting the signal generated by the pair of page up/down buttons in a wireless signal. And, a wireless receiver(22) for receiving the wireless signal transmitted from the laser pointer transmitter and modulating the received data into the serial data, a controller(23) for converting the serial data into the page up/down control signal, a storage unit(24) for storing the presentation table and USB connector(25) for connecting to the USB port of the computer.

Description

Laser Pointing System

The present invention relates to a laser pointing system having a computer mouse wheel function, and more particularly, to a laser pointing system for storing page up / down functions and presentation data 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. Not only is it cumbersome to use a remote control while using a laser pointer, but the infrared method is directional. The wireless mouse is also inconvenient to use because of the trouble.

In addition, conventionally, presentation data is stored in a floppy disk or a compact disk, but a large amount of data cannot be stored in the case of a floppy disk, and in the case of a compact disk, it is impossible to delete or resave it once recorded.

An object of the present invention devised to solve the above problems is to mount the page up / down function on the laser pointer and freely manipulate the page up / down function using the laser pointer as a wireless signal, as well as for presentation. To provide a laser pointing system for storing data in a flash memory.

1A and 1B are schematic diagrams of a laser pointing system according to the present invention.

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

<Explanation of symbols for main parts of drawing>

10 laser pointer 11 laser hole

12: laser module 13: laser operation button

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

17: battery 20, 40: wireless receiver

22, 42: wireless receiver 23, 43: controller

24, 47: Storage device 25: USB connector

26, 46: USB port 27: computer

31: encoder 32: radio transmitter

33, 41: antenna 44: microcontroller

45: mouse controller 48: memory controller

49: flash memory 100: laser pointer transmitter

200: receiver

The laser pointing system of the present invention for achieving the above object is a laser module for oscillating a laser beam by operating a laser operation button, a laser hole for guiding the laser beam, a page up / down control signal for generating a page up A laser pointer transmitter including a / down button and a radio transmitter for transmitting a signal generated by the page up / down button as a radio signal, and a radio receiver for receiving and demodulating the radio signal transmitted from the laser pointer transmitter into serial data. And a receiver including a controller for converting the serial data into a page up / down control signal, a storage device for storing data for presentation, and a USB connector for connecting to a USB port of a computer.

The laser pointing system of the present invention does not need to be considered because there is almost no collision probability between the various 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. To prevent such interference, different frequencies can be used for different devices, but the setting of the use frequency is cumbersome and the cost of the IC capable of multi-channel transmission is relatively high.

Therefore, IC is used to transmit a fixed channel. In this case, each transceiver assigns a unique ID to the encoder of the transmitter so that only the unique ID is operated, and accordingly, the receiver is programmed to operate only one unique ID. Should be. 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 defined for 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 pointing system having a structure of a transceiver of the present invention, wherein the laser pointing system of the present invention is largely based on a radio of the laser pointer 10 and the receiver 200 of the laser pointer transmitter 100. The receiver 20 is divided.

As shown in FIG. 1A, the laser pointer 10 of the laser pointer transmitter 100 includes a laser module 12 for oscillating a laser by a laser operation button 13 and a laser hole 11 for guiding a laser beam emitted. Serial signals generated by the page up / down buttons (15, 16) and page up / down buttons (15, 16) for generating page up / down control signals for the contents displayed by the application for presentation. And a battery 17 for supplying power and a radio transmitter 14 for converting and modulating data into serial data and transmitting the modulated data as a radio signal in the 300 to 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. A wireless receiver 22 for receiving and demodulating the data, a controller 23 for converting serial data input from the wireless receiver 22 into a mouse input signal, and storing data for presentation in a flash memory under the control of a memory controller. A device 24 and a USB connector 25 for connecting to a USB port 26 of a computer (PC or notebook) 27 are configured.

2A and 2B are detailed block diagrams illustrating a wireless transmitter of a laser pointer transmitter and a wireless receiver of a receiver.

As shown in FIG. 2A, the wireless transmitter 30 modulates serial data with an encoder 31 for converting signals generated by the page up / down buttons 15 and 16 into serial data, and wirelessly modulates the serial data. It consists of the radio transmitter 32 which transmits a signal.

As shown in FIG. 2B, the radio receiver 40 determines whether the demodulated signal from the radio receiver 42 and the radio receiver 42 receives and demodulates a radio signal transmitted through the antenna 41. Control of the memory controller 48 through a controller 43 including a microcontroller 44 for decoding the input demodulated signal, and a mouse controller 45 for converting to a USB data format and a USB port 46 connected to the computer main body. And a storage device 47 including a flash memory 49 for storing presentation data.

The operation of the radio transmitter 30 of the laser pointer transmitter 100 and the radio receiver 40 of the receiver 200 will now be described in detail.

In general, the movement of a wheel mouse's wheel movement is detected by using a photo coupler to detect a time difference of a signal trigger and send the information to a computer.

However, the laser pointer 10 of the present invention converts the data for the enable signals of the page up / down buttons 15 and 16 into serial data by the encoder 31 of the radio transmitter 30 instead of the mouse wheel and the photo coupler. The serial data is modulated by the radio transmitter 32 and transmitted wirelessly through the antenna 33. At this time, the encoder 31 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 15 and 16.

The radio receiver 40 of the receiver 200 receives and decodes a radio signal generated from the laser pointer 10 in the radio receiver 42 through the antenna 41 to store 4 bytes of data in a microcontroller of the controller 43 ( 44). The microcontroller 44 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 45. The mouse controller 45 which receives 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 port 46.

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 a single microcontroller, the microcontroller 44 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 radio 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 is connected to the USB port 46 of the computer, and then a random time of the buttons provided on the laser point 10 is enabled for a predetermined time so that the unique ID of the laser pointer 10 can be transmitted to the wireless receiver 40. In this case, until the radio receiver 40 is reset, only data including the unique ID registered for the first time is processed.

Thus, 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 pointing system according to the present invention is a wireless communication method, in addition to the projector connection computer used by the presenter, one laser pointer 10 may also be presented to the audience through a plurality of laptop computers such as laptops that are held by the audience. ) Can be performed while transmitting 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.

The laser pointing system according to the present invention can provide accurate operation regardless of distance and obstacles by providing a wireless transceiver.

The operation of storing data for presentation using the storage device 47 of the wireless receiver 40 will now be described in detail.

The memory controller 48 is connected to the USB port 46 of the computer main body to receive and send data, and to control the input data. In the state connected to the USB port 46, the memory controller 48, which controls all processes, receives data, receives an address from the memory controller 48, and enters data into the flash memory 49. When the memory controller 48 sends the data received through the USB port 46 to the flash memory 49, the data is stored in the flash memory 49. The capacity of the flash memory can be selected and used as needed.

The present invention can freely manipulate page up / down functions wirelessly while using a laser pointer to more effectively conduct academic conferences, seminars, lectures, and lectures, and perform precise operations regardless of distance and obstacles. In addition to being able to be attached and used, data for presentations can be stored and used in flash memory for miniaturization and ease of portability.

Claims (9)

By a laser module for oscillating a laser beam by operating a laser operation button, a laser hole for guiding the laser beam, a page up / down button for generating a page up / down control signal, and the page up / down button A laser pointer transmitter including a wireless transmitter for transmitting the generated signal as a wireless signal; A wireless receiver for receiving a radio signal transmitted from the laser pointer transmitter to demodulate the serial data, a controller for converting the serial data into a page up / down control signal, a storage device for storing data for presentation, and a USB port of a computer. Laser pointing system, characterized in that consisting of a receiver including a USB connector for connecting to. The method of claim 1, And the wireless transmitter comprises an encoder for converting a signal generated by the page up / down button into serial data, and a wireless transmitter for modulating the serial data and transmitting the signal as a wireless signal through an antenna. The method of claim 1, The radio receiver further comprises an LED (LED) indicating a reception state of a signal transmitted from a laser pointer transmitter. The method of claim 1, The controller is a laser pointing system, characterized in that consisting of a microcontroller and a mouse controller. The method of claim 4, 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 4 or 5, The micro-controller processes the data received from the laser pointer transmitter to generate a waveform having the same shape as the wheel operation waveform of the wheel mouse. The method according to claim 4 or 5, Laser pointing system, characterized in that programmable to process the mouse controller function to the microcontroller. The method of claim 4, wherein And the mouse controller converts the data into a USB data format. The method of claim 1, And the storage device comprises a memory controller connected to a USB port of a computer to receive and send data, and control data to be input, and a flash memory to store data by receiving an address from the memory controller.