KR0156658B1 - Device and method for point system cordless telephone control - Google Patents

Abstract

The present invention relates to a point type wireless controller and a method thereof, which can be moved directly to a desired point position on a display screen, so that the selection of a menu is quick and the operation for the point movement is easy.

The apparatus and method includes a transmitter for transmitting a predetermined signal toward a desired point on a display screen, and a plurality of signal receiving sensors arranged around the display screen, and the phase difference is a difference between the strengths of the signals inputted to these receiving sensors. And a receiver / processor for converting the position coordinates of the point directed by the transmitter according to the phase difference and recognizing the point corresponding to the calculated position coordinates. The apparatus may further include a receiver / processor that counts the phase difference using signals having different phases and then analyzes the phase difference after the phase shift to calculate coordinates of the points. . The signal receiving sensors are installed at two or four places around the display screen to control the movement of points on a straight line or a plane in the display screen.

Description

Point type wireless controller and method

1 is a block diagram of a conventional point type radio controller.

2 is a schematic configuration diagram of a transmitter and a receiver / processor of another conventional point type radio controller.

FIG. 3A is a block diagram showing a signal transmitter of the conventional point type radio controller of FIG.

3B is a block diagram of a signal receiving / processing unit of the conventional point type radio controller of FIG.

4A and 4B are exemplary embodiments showing an arrangement structure of a receiving sensor installed around a display screen in the conventional point type wireless controller of FIG.

5A and 5B show another embodiment of the conventional point type wireless controller of FIG. 2 in which the arrangement of the receiving sensor provided around the display screen is modified.

6 is a block diagram showing an embodiment of another point-type radio control apparatus of the present invention.

7 is a block diagram showing another embodiment of the point-type radio control apparatus according to the present invention.

FIG. 8 is a signal waveform diagram at each part (A-H) of FIG. 6 and FIG.

9 is a detail enlarged view of part X of FIG.

FIG. 10 is a detailed enlarged view of a portion Y of FIG. 8.

* Explanation of symbols for main parts of the drawings

2,12 pulse generator 3,13 carrier generator

4,14: current amplifier 5,15: infrared transmitting diode

7,17a-17d: Signal Amplifier

8,18a-18d, 26a-26d, 35a-35d: Envelope Detector

11: display screen 16a-16d: signal receiving sensor

19: multiplexer 20: sample and hold

21: A / D converter 22,323: Coordinate calculator

23: main processor 24: control logic

25a-25d, 34a-34d: automatic gain adjustment unit 27,36: comparator

28: addition amplifier 29: triangle wave generator

30: trigger circuit 31: phase difference counter

33: controller 40, 41: transmitter

50: receiving / processing unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio controller and a method thereof, and in particular, converts a difference in intensity of a signal input to a plurality of receiving sensors into a phase difference, and calculates a position coordinate of a point designated by a transmitter according to the phase difference. The present invention relates to a point type radio controller and a method for selecting a corresponding point.

BACKGROUND ART Currently, on-screen display systems and computer application softwares are used to display execution menus on a display screen in a window manner and to select and execute a desired function by moving a cursor. In this case, the positional movement of the cursor or point is controlled by a wireless remote controller, a wireless mouse, or the like.

1 shows the configuration of a conventional radio controller.

In the conventional radio control apparatus, as shown in FIG. 1, a joystick 1 of a direction key for selecting a desired point direction, a pulse generator 2 for generating a digital code corresponding to the selected point direction as a pulse signal, the pulse In the carrier generator (3) for modulating the signal to make a carrier to enable the space transmission, the current amplifier (4) for modulating the pulse signal by the carrier, and amplifies the modulated pulse signal, and in the current amplifier (4) And a transmitting unit composed of an infrared transmitting diode 5 which is driven by the amplified signal and sends an infrared signal to the space.

The conventional radio controller further includes a reception sensor 6 for receiving the infrared transmission signal, a signal amplifier 7 for amplifying the infrared signal received by the reception sensor 6, and an output signal of the signal amplifier 7. Receiving / processing section consisting of an envelope detector 8 and comparator 9 for removing carriers from the carrier and regenerating the pulse signal, and a pulse analyzer 10 for obtaining direction information by analyzing the direction code from the reproduced pulse signal. It is provided.

In the conventional radio controller configured as described above, when the user selects the desired direction using the joystick 1 in the direction key in the transmitter, the pulse generator 2 generates a digital code corresponding to the desired point direction as a pulse signal. The pulse signal is input to the current amplifier 4 together with the carrier generated by the carrier generator 3, modulated and amplified, and then applied to the infrared transmitting diode 5 so that an infrared signal is transmitted from the infrared transmitting diode 5 to the space. do.

The infrared signal transmitted to the space through the transmitter is received by the receiving sensor 6 in the receiver / processing unit and then amplified by the signal amplifier 7 to compensate for the signal attenuated due to the transmission in space. . The infrared signal amplified in this manner passes through the envelope detector 8 and the comparator 9, and the carrier is removed and only the original pulse signal is reproduced. The reproduced pulse signal is analyzed by a code expressed in the form of a pulse in the pulse analyzer 10, and information about a point direction is obtained by analyzing which direction the code is analyzed. Therefore, when the user continuously operates the joystick joystick 1, the above-described operation is repeated, and thus information about the point direction is obtained at a predetermined time interval, thereby enabling movement to a desired point position on the display screen. .

However, according to the first embodiment, the conventional wireless controller has a disadvantage in that it is inconvenient to operate the cursor because the direction key joystick 1 must be continuously operated to move to a desired point position on the display screen. Also, if you move to a point location far from each other, it takes a long time. Furthermore, there is an inconvenience in that the direction key joystick 1 must be operated in a state in which the direction of the receiving sensor 6 is accurately focused at the position where the receiving sensor 6 is located.

On the other hand, Patent Application No. 1992-12672, which is the applicant's prior application, discloses a point type radio control device to compensate for the disadvantages of the conventional radio control device.

That is, referring to FIGS. 2 and 3, the point type radio controller includes a transmitter 40 and a receiver / processor 50. As shown in FIG.

The transmitter 40 includes a switch SW, a pulse generator 12 for generating a pulse signal during the 'on' state of the switch SW, and a carrier generator for modulating the pulse signal to make a carrier for space transmission ( 13) a current amplifier 14 modulating the pulse signal by a carrier and amplifying the modulated pulse signal, and a signal modulated and amplified by the current amplifier 14 to drive an infrared signal into space. It consists of the infrared ray transmitting diode 15 which it sends.

The receiving / processing unit 50 is arranged at each square corner on the display screen as shown in FIG. 4A and receives the infrared signals transmitted from the infrared transmitting diode 15, 16a-16d, these receiving sensors 16a-. 16d) removes the carrier from the output signal of the signal amplifiers 17a-17d and the signal amplifiers 17a-17d for amplifying the weak infrared signal received by the infrared signal inputted to the respective receiving sensors 16a-16d. An envelope detector 18a-18d providing a level corresponding to the intensity, a multiplexer 19, a sample and holder 20, which are sequentially connected to convert the output level of the envelope detector 18a-18d into a digital value, and Coordinate calculator 22 for calculating the position coordinates on the display screen currently being directed by the transmitter 40 using the A / D converter 21 and the output of the A / D converter 21 as inputs. Position coordinates calculated by (22) Recognize the point and consists of a main processor 23, and the hollow weave portion 24 is a control which controls the timing for driving each of these devices to be displayed on a display screen.

The operation and effects of the radio steering apparatus configured as described above will be described in detail.

In the apparatus of FIG. 3, as in FIG. 4A, receiving sensors 16a-16d are provided at four corners of the rectangular corner of the display screen 11 to enable the movement of points on a two-dimensional plane.

When the switch SW is 'on' while the transmitter 40 is directed to a desired position on the display screen 11, the pulse generator 12 generates a pulse signal until the switch SW is 'off'. Is generated. The pulse signal is input to the current amplifier 14 together with the carrier generated by the carrier generator 13, which modulates the modulated pulse signal by the carrier in order to send the pulse signal into the space. Amplified and applied to the infrared transmitting diode 15.

The modulated pulse signal is transmitted to the space by the infrared transmitting diode 15 and then received by the receiving sensors 16a-16d in the receiving / processing unit 50. At this time, the intensity of the infrared signal input to each of the receiving sensors (16a-16d) according to the angle that the transmitter 40 is directed, that is, the angle between the transmitter 40 and each of the receiving sensors (16a-16d) Each one is different.

In this way, the infrared signals received by each of the receiving sensors 16a-16d are amplified by the signal amplifiers 17a-17d, respectively, and then input to the respective envelope detectors 18a-18d to remove the carriers, respectively. It is output at a level corresponding to the intensity of the infrared signal input to the sensors 16a-16d.

Thus, the level signals corresponding to the light intensity of the infrared signal, which are output from each envelope detector 18a-18d, are sequentially passed through the multiplexer 19, the sample and holder 20, and the A / D converter 21. After conversion to a digital value, it is input to the coordinate calculator 22, whereby the coordinate calculator 22 calculates the position coordinates on the display screen 11 currently pointing.

4B illustrates an example of a screen state in which a function selection menu is displayed when the wireless control apparatus is applied to an audio / video system. In the state where the device selection menu consisting of a television (TV), a video cassette recorder (VCR), a compact disc player (CDP), and a laser disc player (LDP) is displayed on the quadrant screen 11 as shown, When the user directs the transmitter 40 to the desired device part and transmits infrared rays, the receiving part 16a-16d of the reception sensor 16a-16d arranged at the edge of the display screen 11 receives the closest part to the part to which the transmitter 40 is directed. The intensity of the infrared signal received by the sensor is greatest. Therefore, the coordinate calculator 22 calculates the position coordinate corresponding to the point to which the transmitter 40 is directed.

On the other hand, when the selection menu increases and the display screen 11 is divided into eight or more divisions, the coordinates are calculated based on the reception sensor having the largest reception signal level among the reception sensors 16a-16d. That is, for example, in FIG. 4B, when the reception level of the reception sensor 16b is the largest, the reception level of the reception sensor 16d is the smallest. Therefore, the positional coordinates on the display screen 11 are calculated using the relative reception level of each reception sensor 16a and 16c with respect to the reception sensor 16b except for the reception sensor 16d.

The main processor 23 matches the position coordinates calculated by the coordinate calculator 22 with the display screen 11 to select a point corresponding to the position coordinates.

The operation timing of the respective circuit elements in the reception / processing section 50 mentioned above is controlled by the control logic section 24.

5a and 5b are other embodiments in which the arrangement of the receiving sensor is installed around the display screen in the conventional radio controller, and is shown in the embodiments of FIGS. 4a, 4b and 3 in a two-dimensional plane. It is applied to the case of moving the point only on the one-dimensional straight line by restricting the movement of.

That is, when it is necessary to move the point P only in the left and right or upper and lower straight sections on the display screen 11, as shown in FIGS. 5A and 5B, the two receiving sensors 16a and 16c and 16b are shown. , 16d) may be provided only on the left and right sides or the top and bottom sides of the display screen 11 to move the point P in a desired direction according to the difference in signal strength detected at two locations. The circuit operation in this embodiment is as described above.

However, the conventional point type wireless controller as described above compares only the strengths of the signals input to the receiving sensor located near the display screen 11 to calculate the coordinates of the receiving sensor having the largest receiving intensity and corresponds to the coordinates. As a method of determining a point to be used, there is a problem that an error in coordinate determination may occur due to a deviation of a radiation angle or a radiation distance of a transmitter.

An object of the present invention is to solve the disadvantages of the conventional technology, the position corresponding to the signal having the largest reception strength according to the phase difference by converting the difference in the intensity of the signal input to the plurality of receiving sensors into the phase difference The present invention provides a point type wireless controller and a method for selecting a desired point by calculating coordinates.

According to one aspect of the invention, the transmission unit 41 for transmitting a predetermined signal toward the target point on the display screen; A plurality of signal receiving sensors (16a-16d) installed in the periphery of the display screen and receiving predetermined signals transmitted from the transmitting unit (41), respectively; Phase-converted signals inputted to the respective signal receiving sensors 16a-16d according to their level differences by using triangular wave pulses synchronized with the signals input to the respective signal receiving sensors 16a-16d. A signal processor that counts a phase difference of a signal; A coordinate calculator 32 for calculating a position coordinate on the display screen, which corresponds to a signal having the largest reception intensity according to each phase difference counted by the signal processing unit; In addition, a point type wireless control device including a controller 33 for recognizing a point on a display screen corresponding to a position coordinate calculated by the coordinate calculator 32 and displaying a fact of selection on the display screen is provided.

According to another aspect of the invention the step of transmitting a predetermined signal toward the target point on the display screen; Receiving the signal at each of a plurality of points around the display screen; Converting the level difference of the received signals into a phase difference, and counting the phase difference of the phase shifted signals; Calculating position coordinates on the display screen corresponding to the signal having the largest reception intensity according to the counted phase difference; In addition, a point type wireless adjustment method comprising a step of recognizing a point corresponding to the calculated position coordinates is provided.

6 is a block diagram showing an embodiment of a point type radio control apparatus according to the present invention. Referring to FIG. 6, the point type radio controller of the present invention includes a transmitter 41, four reception sensors 16a-16d for receiving predetermined signals transmitted from the transmitter 41, and the respective reception sensors. An automatic gain adjusting unit 25a-25d for constantly adjusting the level of the signal sensed by 16a-16d and an envelope for removing the carrier from the output of the automatic gain adjusting unit 25a-25d to extract the original transmission pulse signal. An envelope signal, i.e., a pulse signal, output from the detectors 26a-26d and the envelope detectors 26a-26d is added and amplified, and a reference level signal is applied to the automatic gain adjusting unit 25a-25d. The addition amplifier 28, the trigger circuit 30 for generating a trigger signal to the following triangular wave generator 29 in synchronization with the pulse signal to be added and amplified by the addition amplifier 28, and generating triangular wave pulses synchronized with the trigger signal. Triangle wave generator 29, the The phase difference of each pulse signal phase-converted by the comparator 27 and the comparator 27 which performs phase conversion by comparing the pulse signal output from the envelope detectors 26a-26d with the triangular wave pulse generated by the sensory wave generator. A phase calculator 31 for counting, a coordinate calculator 32 for calculating a position coordinate of a reception sensor installed around a display screen as a phase difference of each pulse signal counted by the phase difference counter 31, and the coordinate calculator ( The controller 33 moves the cursor to a point corresponding to the position coordinate of the reception sensor calculated in 32 and selects the point.

The operation of the point type radio control apparatus of the present invention configured as described above will be described with reference to FIGS. For convenience of the four reception sensors 16a-16d, only one reception sensor 16a will be described. The operation of the receiving sensor of 16b-16d is the same as that of the receiving sensor of 16a.

The pulse signal input to the receiving sensor 16a of FIG. 6 is a pulse signal including a carrier, like the A waveform of FIG. This input pulse signal is weak and uneven because it has flown through the space with relatively little optical power. In order to constantly adjust the level of the input pulse signal, the automatic gain adjusting section 25a is used. The gain waveform passing through the automatic gain adjusting section 25a is the same as the B waveform of FIG. Since the waveform still contains a carrier, it must pass through the envelope detector 26a to obtain a pure pulse signal in which carriers such as D in FIG. 8 are removed. At this time, the pulse signal reproduced by the envelope detectors 26a to 26d is added by the add amplifier 28, and the added signal is applied to each of the automatic gain adjusting units 25a to 25d so that each of the receiving sensors 16a can be applied. Use the gain as the reference level signal to adjust all gains to the same reference.

The pulse signal from each of the envelope detectors 26a to 26d is phase-converted in the comparator 27 by a triangular wave pulse (see E-shaped in FIG. 8) from a triangular wave generator 29 to be described later. The triangular wave generator 29 In order to perform a phase shift without error with the pulse signal, the trigger circuit 30 receives a trigger signal and generates a triangular wave synchronized thereto. The trigger signal is supplied from the add amplifier 28 to be equal to the phase of each pulse signal added by the add amplifier 28. The waveform of the pulse signal phase-converted by the comparator 27 is equal to F of FIG. 8.

FIG. 9 is an enlarged view of part X of the F waveform of FIG. 8. Each vertical block of FIG. 9 represents a phase difference of a pulse signal received by each receiving sensor, in which the difference in signal intensity is phase-shifted by the above operation. If the waveform of FIG. 9 is obtained for the four receiving sensors 16a, 16b, 16c, and 16d, the intensity of the pulse signal input to each receiving sensor is in the order of W16d, W16a, W16c, and W16b. It can be seen that the transmitter 41 is in the closest orientation to the sensor.

The phase difference counter 31 of FIG. 6 counts the phase difference of the pulse signal received by each receiving sensor based on the trigger signal of the trigger circuit 30 and applies the count value to the coordinate calculator 32. The coordinate calculator 32 calculates the coordinates of the reception sensor corresponding to the count value, decodes the position of the reception sensor directed by the transmitter 41, and accordingly the point at which the controller 33 corresponds to the position. By selecting, you finish the series of radio adjustment process.

7 is a block diagram showing another embodiment of the point type radio control apparatus according to the present invention. The apparatus of FIG. 7 is connected to each of the automatic gain adjusting units 25a-25d in parallel to maintain the same level of the pulse signal input in different phases due to the distance difference between each receiving sensor and the transmitting unit 41. Two automatic gain adjusters 34a-34d, envelope detectors 35a-35d for removing carriers from the outputs of the automatic gain adjusters 34a-34d, and reproducing the original transmission pulse signal, and each envelope detector 35a-. Comprising a comparator 36 for overlapping the pulse signal output from the 35d) and outputs it to the phase difference counter 31, the other parts are the same as the embodiment shown in FIG.

Referring to Figures 7 and 8 to 10 will be described the operation of the point-type radio control apparatus according to another embodiment of the present invention.

The operation of the overlapping part of FIG. 6 will be omitted, and only the operation of the newly added part will be described. Pulse signals having different phases due to the difference in distance between each receiving sensor 16a-16d and the transmitting unit 41 inputted to each receiving sensor 16a-16d are connected to the automatic gain adjusting unit 25a-25d of FIG. The gain-adjusted pulse signal is inputted to the automatic gain adjustment units 34a-34d and adjusted to the same level. The gain-adjusted pulse signal is a waveform similar to the waveform C of FIG. 8 in which the carrier is not yet removed. The gain-adjusted pulse signal by the automatic gain adjusting units 34a-34d is removed by the envelope detectors 35a-35d, and reproduced as the original pulse signal sent by the transmitter 41 (G in FIG. 8). Waveforms). The pulse signals of each of the reproduced reception sensors are compared and superimposed by the comparator 36. The pulse signals compared and superimposed by the comparator 36 are outputted from the comparator 27 of the embodiment of FIG. A signal and a trigger signal of the trigger circuit 30 are input to the phase difference counter 31. At this time, the waveform of the phase-converted signal input to the phase difference counter 31 is the same as the H waveform of FIG. The H waveform is a superimposed waveform of received pulse signals having different phases due to the difference in distance between the transmitter 41 and each of the receiving sensors 16a-16d. An enlarged detail of the Y portion is shown in FIG. 10.

If the waveform of FIG. 10 is obtained for the four receiving sensors 16a, 16b, 16c, and 16d from the waveform of FIG. 10, the superimposed pulse signals input to each receiving sensor are in the order of W16d, 16a, 16c, and 16b. As a result, it can be seen that the transmitter 41 is in the closest direction to the 16d receiving sensor.

The comparison and the superimposed pulse signal is counted by the phase difference counter 31, and the count value is calculated by the coordinate calculator 32 as coordinates of the reception sensor corresponding to the count value, so that the controller 33 The point corresponding to the coordinate is selected and displayed.

As a result, the radio control apparatus according to another embodiment of the present invention phase-shifts the signal level difference of each pulse signal detected by each receiving sensor 16a-16d, as shown in FIG. And count the phase difference of each pulse signal reached with different phases to each receiving sensor 16a-16d as in the apparatus shown in FIG. The point position can be calculated.

Claims (9)

A point type wireless adjustment device for selecting a point displayed on a display screen, comprising: a transmitter (41) for transmitting a predetermined signal toward a target point on the display screen; A plurality of signal receiving sensors (16a-16d) installed in the periphery of the display screen and receiving predetermined signals transmitted from the transmitting unit (41), respectively; Phase-converted signals inputted to the respective signal receiving sensors 16a-16d according to their level differences by using triangular wave pulses synchronized with the signals input to the respective signal receiving sensors 16a-16d. A signal processor that counts a phase difference of a signal; A coordinate calculator 32 for calculating a position coordinate on the display screen, which corresponds to a signal having the largest reception intensity according to each phase difference counted by the signal processing unit; And a controller (33) for recognizing a point on the display screen corresponding to the position coordinate calculated by the coordinate calculator (32) and displaying a fact of selection on the display screen. The pulse generator (12) of claim 1, wherein the transmitter (41) generates a periodic pulse signal while the switch (SW) is turned on, and for modulation to spatially transmit the pulse signal. A carrier generator 13 for making a carrier, a current amplifier 14 for modulating a pulse signal generated by the pulse generator 12 by using a carrier generated in the carrier generator 13, and amplifying the modulated pulse signal; And a transmission diode (15) for transmitting the pulse signal modulated and amplified by the current amplifier (14) to space. 3. The point type radio control apparatus according to claim 2, wherein said transmitting diode (15) is an infrared light emitting diode. 2. The apparatus of claim 1, wherein the signal processor comprises: a plurality of automatic gain adjusters (25a-25d) for constantly adjusting a level of a signal detected by each of the signal receiving sensors (16a-16d); A plurality of envelope detectors 26a-26d for removing carriers from the outputs of the automatic gain adjusting units 25a-25d and extracting original transmission pulse signals; An add amplifier 28 for adding and amplifying the envelope signals output from the envelope detectors 26a to 26d and applying the added and amplified signals to the automatic gain adjusting units 25a to 25d as reference level signals; A trigger circuit (30) for generating a trigger signal in synchronization with the signal added by the addition amplifier (28); A triangular wave generator 29 generating triangular wave pulses synchronized with the trigger signal; A comparator (27) for comparing the output signals of the envelope detectors (26a to 26d) and the triangle wave pulses generated by the triangle wave generator (29) to perform phase conversion according to the level difference of the respective signals; And a phase difference counter (31) for counting the phase difference of each pulse signal phase-converted by the comparator (27) in synchronization with the trigger circuit (30). The point type radio control apparatus according to claim 1, wherein the signal receiving sensors (16a-16d) are arranged at two places around the display screen to move a point on a one-dimensional straight line. The point type radio control apparatus according to claim 1, wherein the signal receiving sensors (16a-16d) are arranged at four corners around the display screen to move a point on a two-dimensional plane. 5. The plurality of automatic gain adjusting units of claim 4, wherein the signal processing unit maintains the same level of the signals detected by the respective signal receiving sensors 16a-16d and is connected in parallel to the automatic gain adjusting units 25a-25d. 34a-34d); A plurality of envelope detectors (35a-35d) for reproducing the original signal by removing a carrier from each output of each of the automatic gain adjustment units (34a-34d); And a comparator (36) for comparing and superimposing the signals output from the envelope detectors (35a to 35d), and for applying the comparison and superimposed signals to the phase difference coefficient unit. A point type wireless adjustment method for selecting a point displayed on a display screen, comprising: transmitting a predetermined signal toward a target point on the display screen; Receiving each of the signals at a plurality of points around the display screen; Converting the level difference of the received signals into a phase difference, and counting the phase difference of the phase shifted signals; Calculating position coordinates on the display screen corresponding to the signal having the largest reception intensity according to the counted phase difference; And recognizing a point corresponding to the calculated position coordinate. 10. The method of claim 8, further comprising detecting an actual phase difference of the signals received in the signal receiving step, wherein the phase difference and the actual value according to the level difference of the received signals in the phase difference counting step. And correct the positional coordinate values calculated by counting the respective phase differences together and comparing the counted values.