KR950013165B1 - Point-type wireless controller using infrared rags - Google Patents

Abstract

an infrared ray transmitting unit for transmitting an IR signal having a predetermined period; and a reception and control unit for receiving the IR signal from a plurality of reception sensors arranged in all directions, for calculating co-ordinates of a designation point position by a signal strength difference among the IR signals received from the sensors, and for matching the designation point position on a display screen. The IR transmitting unit transmits a pulse waveform having a predetermined period with a carrier signal and also transmits a synchronous signal to the reception and control unit.

Description

Point type wireless controller using infrared rays

1 is a block diagram of a radio controller using a conventional infrared ray.

2 is a block diagram of a wireless control device of the present invention.

3 is a view showing an arrangement structure on the monitor screen of the infrared receiving sensor of the present invention.

4 is a block diagram of a point type wireless controller using the present invention infrared ray.

Figure 5 (a) (b) is another embodiment showing an arrangement structure on the monitor screen of the infrared receiver of the present invention.

* Explanation of symbols for main parts of the drawings

12 pulse generator 13 carrier signal generator

14 current amplifier 15 infrared transmission diode

16 to 16-3: infrared receiving sensor 17 to 17-3: amplifying unit

18 to 18-3: envelope detector 19: multiplexer

20: Sample & Hold 21: A / D Converter

22: coordinate calculator 23: main processor

24: control logic section

The present invention relates to a wireless control device, and in particular, to analyze the difference of the infrared light input to the infrared receiving sensor to calculate the coordinates of the current point position and match it with the display screen to be able to move freely to the desired point position.

The conventional infrared radio controller includes a direction key joystick (1) for selecting a desired point direction, a code pulse generator (2) for converting a digital code corresponding to a desired point direction into a pulse form, as shown in FIG. A current amplifier 4 for amplifying the carrier signal generated by the pulse signal and the carrier signal generator 3, an infrared transmitting diode 5 for transmitting an infrared signal to the amplified signal in space, and detecting the infrared transmission signal An infrared receiver 6, an amplifier 7 for amplifying the infrared signal received by the infrared receiver 6, an envelope detector 8 for detecting and removing the carrier signal inputted to the amplifier 7, A comparator 9 for reproducing the original pulse input to the amplifier 7 and a pulse code analyzer 10 for analyzing the direction of the code by analyzing the regenerated pulse and analyzing the code in which direction. It is composed.

In the conventional infrared wireless device configured as described above, as shown in FIG. 1, when the user selects a desired direction using the direction key joystick 1, the code pulse generator 2 generates a digital code corresponding to a desired point direction in pulse form. The signal is input to the current amplifier 4 together with the carrier signal generated by the carrier signal generator 3.

At this time, the pulse signal and the carrier signal amplified by the current amplifier 4 transmit the infrared signal in space by the infrared transmitting diode 5.

The infrared signal transmitted to the space is sensed by the infrared receiving sensor 6 and then re-amplified the weak infrared signal by the amplifier 7.

This re-amplified infrared signal removes the carrier signal by the envelope detector 8 and then reproduces the pulse originally transmitted through the comparator 9.

That is, the pulse signal reproduced by the comparator 9 analyzes the code expressed in the form of pulse in the pulse code analyzer 10 to analyze which direction the code is and obtain information on the point direction.

Therefore, as the user continuously operates the joystick joystick 1, information on the point direction can be obtained at a predetermined time interval.

However, the conventional infrared wireless device is inconvenient to move the cursor when moving to the desired point position on the display screen, so that the movement of the cursor is inconvenient. There has been a problem in that the sensor 6 needs to be focused and operated at the position.

The present invention analyzes the level difference of the infrared light input to the infrared receiver in order to solve the conventional problems, calculates the coordinates of the specified point position, and then match it with the display screen to move freely to the desired point direction position Referring to the configuration and effect of the present invention by the accompanying drawings as the purpose is as follows.

First, the infrared wireless device of the present invention includes infrared transmitting means 30 for transmitting an infrared signal of a predetermined cycle, as shown in FIGS. 2 and 3, and receiving sensors 16 to 16-3 arranged at several places. Reception and control means (40) for matching the point on the display screen (11) by calculating the coordinates of the designated point position based on the difference in the infrared signal strength received from each of the receiving sensors (60 to 16-3). ).

As shown in FIG. 4, the infrared wireless controller of the present invention configured as described above includes a periodic pulse generator 12 in which a periodic pulse waveform is generated by the on / off operation of the switch SW, and the periodic pulse generator 12. Current amplifier 14 for amplifying the periodic pulse waveform generated by the signal and the carrier signal generated by the carrier signal generator 13, and an infrared transmission diode for transmitting the signal amplified by the current amplifier 14 in space. 15), each of the infrared receiver sensors 16 to 16-3 which detects the transmitted infrared signal at the position arranged at the edge on the monitor screen, and the weak infrared rays received by the infrared receiver sensors 16 to 16-3. Each amplification unit 17 to 17-3 for re-amplifying the signal, and a carrier signal input to the amplifying units 17 to 17-3 are removed, and each infrared receiver sensor 16 to 16-3 is removed. Detecting the level corresponding to the intensity of the input light Each envelope detector 18 to 18-3 and a multiplexer 19, sample and holder 20, and A sequentially connected to sequentially convert the output level of the envelope detector corresponding to the light intensity into a digital value. A coordinate converter 22 which calculates the position coordinates of the display screen currently pointing by inputting the output of the A / D converter as an input to the / D converter 21, and the coordinate axis calculated by matching the display screen with the current point. It is composed of a main processor 23 for displaying the on the screen, and a control logic section 24 for controlling the timing required for each drive.

The effect of the present invention configured as described above is as shown in FIGS. 2 and 3, after installing the infrared receiver sensors 16 to 16-3 at each of the four ends of the display screen 11, using the infrared transmitter. (11) When the infrared signal is sent toward an arbitrary position, the intensity of the infrared light input to the respective infrared receiver sensors 16 to 16-3 is different.

That is, when the switch SW of the radio transmitter is turned on, the periodic pulse generator 12 generates a periodic pulse waveform until the switch SW is turned off, and the carrier signal generated from the carrier signal generator 13 is generated. Together with the current amplifier 14 is input.

The current amplifier 14 amplifies the current required by the infrared transmitting diode 15 for transmitting the periodic fence waveform and the carrier signal into space.

This amplified signal is detected by each infrared receiver sensor 16 to 16-3, and the infrared signal transmitted in space by the infrared transmitting diode 15 is then amplified by each weak infrared signal. It is reamplified by the parts 17 to 17-3.

The re-amplified infrared signal is removed by the respective envelope detectors 18 to 18-3, and the carrier signal is removed and corresponds to the intensity of each infrared light input to each of the receiving sensors 16 to 16-3. Print the level.

Therefore, each level corresponding to the intensity of the infrared light is converted into digital values sequentially through the multiplexer 19, the sample and hold 20, and the A / D converter 21, and is currently indicated by the coordinate calculator 22. The position coordinates of the displayed display screen 11 are calculated.

At this time, the display screen 11 is input to the main processor 23 to match the calculated position coordinate axis to display the current point on the screen.

The control logic section 24 controls the timing required for each drive.

On the other hand, as another embodiment of the infrared radio controller of the present invention, as shown in FIG. 5, it can be used to restrict the effective movement of the point on the two-dimensional plane so that the point can be moved only on the one-dimensional straight line.

That is, when it is necessary to move the point (A) (B) on the screen (11-1) (11-2) only within the straight section, the receiving sensor (16-4 to 16-7) is installed only in the left and right, up and down By doing so, it is possible to move the point (A) (B) on a certain straight line in the desired direction in accordance with the difference between the infrared rays detected in the two places.

At this time, the operation is the same as described above, and there is a difference that two reception sensors are configured, and an envelope detector and a multiplexer are more simply configured.

As described above, by analyzing the difference between the infrared light input to the infrared receiving sensor installed at the front of the display screen, the coordinates of the current point position can be calculated and matched with the display screen to move freely to the desired point position. It is effective to.

In addition, since the transmitting side transmits a pulse waveform of a certain period together with the carrier signal, there is an effect that the power consumption of the transmitting side can be reduced.

Claims (6)

Infrared transmitting means 30 for transmitting a predetermined period of the infrared signal, and receiving the signal from the receiving sensors 16 to 16-3 arranged in several places, specified by the difference in the infrared signal strength received from each sensor Point type wireless adjustment apparatus using infrared rays, characterized in that the configuration of the receiving and control means for matching the point on the display screen (11) by calculating the coordinates of the point position. The apparatus of claim 1, wherein the infrared transmitting means (30) transmits a predetermined periodic pulse waveform together with the carrier signal and transmits a synchronization signal to the receiving and controlling means (40). . The infrared ray transmitting means (30) according to claim 1 or 2, wherein the infrared ray transmitting means (30) comprises a periodic pulse generator (12) for generating a periodic pulse waveform by the on operation of the switch (SW) and the periodic pulse generator (12). The periodic pulse signal generated, the current amplifier 14 for amplifying the carrier signal generated by the carrier signal generator 13, and the infrared transmitting diode 15 for transmitting the signal amplified by the current amplifier 14 in space. Point type wireless control device using infrared rays, characterized in that consisting of. The method of claim 1, wherein the receiving and control means 40 are located at various edges on the screen, a plurality of receiving sensors (16 to 16-3) for detecting the infrared signal, and a plurality of amplifying the detected weak signal, respectively Multiple amplifiers 17 to 17-3 and a plurality of envelope detectors 18 to 17 that remove carrier signals from the output signals of the amplifiers 17 to 17-3 and detect a level corresponding to the strength of the received signal. 18-3), a multiplexer 19, a sample-and-hold 20, and an A / D converter 21 which are sequentially connected to receive a signal of the envelope detector and convert the signal into a digital value corresponding to light intensity; Coordinate calculator 22 for calculating the position coordinates of the display screen 11 currently indicated by the converted digital value, the display screen 11, and the calculated coordinate axes are matched to display the current point on the display screen 11. Khe Main The control logic unit 24 controls the timing required for driving the multiplexer 19, the sample-and-hold 20, and the A / D converter 21 according to the parser 23 and the signal of the main processor 23. Point type wireless control device using infrared rays, characterized in that the configuration. 5. The point type wireless control device using infrared rays according to claim 4, wherein the infrared ray receiving sensor (30) is installed at four edges of four corners of the display screen (11). 5. The point wireless control device using infrared rays according to claim 4, wherein the infrared receiver sensor (30) is positioned at two places to constitute a one-dimensional point wireless control device.