KR100281512B1 - Remote control transmitter with pointing function - Google Patents

Abstract

The present invention relates to a remote controller capable of indicating a point, and more particularly to a remote controller capable of indicating a point, and more particularly to a remote controller for accurately reading a potential of a contact by applying a power to a resistor, And a remote controller having a pointing function.

Conventionally, since the trackball mouse remote control requires a trackball, an X and Y roller shaft, a light interrupter and a respective porter coupler in order to convert a mechanical operation into an electrical signal, the mechanical device is complicated, There arises a problem that a price is increased and a preceding operation for activating the porter coupler is required to output the cursor drive signal in the standby state.

SUMMARY OF THE INVENTION In order to solve the above-described problems, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an A / D converter which is provided with a concentric annular resistor, And a pointing element of a direction component and a velocity component for moving the cursor by using the measured potential is detected to precisely control the cursor on the screen, And a means for outputting a direct pointing signal in a standby state to reduce the number of times of the pointing operation.

Description

Remote control transmitter with pointing function

The present invention relates to a remote controller which reads a potential of a contact by a conductor from a power source of a resistor which is interchanged to designate a precise cursor position on the screen and controls the cursor direction according to the voltage value To a remote controller having a function.

Generally, on-screen cursors require position control values for the X and Y axes to move freely in two-dimensional space. That is, the motion vectors for the X and Y axes should be controlled.

A typical cursor control device as a device for wireless remote control is a trackball mouse.

As shown in Figs. 1 (a), (b) and (c)

A track ball 1 moving along the X and Y roller shafts 5 by manual control of the user, a light emitter 2 positioned at the top of the circuit board 10 and generating light, And a photoreceptor 4 for receiving the light of the light emitter 2 through the light interrupter 3. The light interrupter 3 includes a light interrupter 3 for interrupting light while rotating around the X and Y roller shafts 5, And,

And a switch (SW1) located on the bottom surface of the circuit board (10) for controlling power supply to the light emitter (2).

2 is a diagram showing the pin layout of the microcomputer 6 in the trackball mouse remote controller,

A porter coupler PC1 (PC2) including a light emitter 2 and a light receiver 4 to sense positional information of horizontal and vertical (X) (Y) with respect to the movement of the track ball 1, A microcomputer 6 for receiving the motion information of the trackball 1 sensed by the microcomputer PC1 and converting the received motion information into a remote control code format and outputting the same to a receiver via a light emitting diode LED1, And an oscillator X1 for outputting an oscillation frequency.

Reference numeral 7 denotes a key matrix according to the key setting. Reference numeral 11 denotes a back cover, C1 and C2 denote capacitors, and LED2 and LED3 denote light emitting diodes.

The operation of the remote controller of the conventional trackball mouse configured as described above will be described with reference to FIGS. 1 and 2. FIG.

When the power of the X and Y roller shafts 5 with friction material is received and driven by the movement of the track ball 1 by manual control by the user, the light interrupter connected to the X and Y roller shafts 5 3 rotates, the light emitted from the light emitter 2 of the porter coupler PC1 (PC2) is interrupted.

The light emitted from the light emitter 2 is received by the light receiver 4 of the porter couplers PC1 and PC2 via the light interrupter 3 and the light received by the light receiver 4 is received by the microcomputer (6) in the form of an interrupt.

The microcomputer 6 outputs a signal input through the receiver 4 to a TV receiver in a remote control code format to determine the horizontal and vertical positions of the cursor on the screen.

In addition, in the trackball mouse remote controller, when the user does not operate the switch SW1, power is not supplied to the porter couplers PC1 and PC2 in the standby state, so that the mechanical movement is recognized as an electrical signal The power consumption of the porter coupler PC1 (PC2) due to the continuous light generation is reduced, and the oscillation of the oscillator X1 is turned off, thereby preventing the oscillation of the micom.

In order to perform the initial driving, the operation of the microcomputer 6 is activated by using the switch SW1, and then the power is supplied to the porter couplers PC1 and PC2, so that the cursor control signal by the movement of the track ball 1 .

However, since the conventional trackball mouse remote controller uses a trackball, its power consumption is large due to oscillation of the porter coupler and the microcomputer in an active state where the shape is large due to mechanical complexity and is not in a standby state. In addition, And a need for a preceding operation to activate the porter coupler for outputting.

In order to solve the above-described problem, the present invention provides a circuit board comprising: a concentric annular resistor body having a polarity of a power supply connected in opposite directions to each other on a circuit board, the A / D converter Means for measuring the potential applied to each resistor at the pressed position and for detecting the pointing element of the direction component and the velocity component for moving the cursor using the measured potential so as to precisely control the cursor on the screen And a means for directly outputting a pointing signal in a waiting state in order to reduce the consumption of the battery, so that the cursor control of the electric pointing function is enabled.

1 is a structural view of a conventional trackball remote controller.

2 is a view showing a pin layout of a conventional microcomputer.

Fig. 3 (a) is a front view of a remote controller having a pointing function according to the present invention, and Fig. 3 (b) is a sectional view taken along the line A-A 'in Fig.

FIG. 4 is a view showing the shape of a resistor pattern and a conductor pattern provided on a circuit board of a pointing key in a remote controller having a pointing function according to the present invention. FIG.

Fig. 5 is a double-ring-shaped conductor contact shape formed in the louver switch of the present invention. Fig.

6 is a schematic view for reading a voltage which is direction information according to the present invention;

7 is a block diagram of a remote controller having a pointing function according to the present invention.

8 is a diagram for showing that a vector value according to the present invention is converted into a coordinate value.

The configuration of the remote controller having the pointing function of the present invention, as shown in FIG. 3 to FIG. 7,

(Ra and Rb) having polarities (Vdd and GND) of the power source connected to each other on opposite sides of the circuit board 60. The conductive contacts Ca and Ca are connected to the resistors Ra and Rb, Pointing means 20 for outputting a pointing element for moving the cursor by measuring and combining the potentials V1, V2 and V3 caught by the resistors Ra and Rb when the two resistors Ra and Cb are pressed,

A control means (30) for combining the pointing elements input from the pointing means (20) and converting into a remote control code format for designating the position of a cursor according to the combined coordinate values;

And transmission means (40) for receiving the signal converted into the remote control code format by the control means (30) and transmitting it to the remote receiver.

6 and 7, the pointing means 20 reads the potentials V1 and V2 at the contact points of the resistors Ra and Rb to convert them into digital signals, An A / D converter (ADC1) (ADC2) for reading the potential (V3) applied to the resistors (Ra) and Rb as a whole and an A / D converter A potential difference detecting unit 21 for receiving a digital signal converted from the ADC1 (ADC2) and the ADC3 and detecting a potential difference (V_diff) in the resistor (Ra) Rb, an A / D converting unit A contact position detection unit 22 for detecting the position of a contact of the resistor Rb by adding a digital signal of a potential read from a constant resistance member to a potential difference V_diff of the resistance member, And a contact time detector 23 which receives the digital signal converted from the ADC1 (ADC2) (ADC3) and detects the time when the contact is pressed to the resistor (Ra) Rb.

The control means 30 includes a speed detecting portion 31 for detecting the speed component V_dire by adding the detected potential difference V_diff from the potential difference detecting portion 21 and the pressed time detected by the contact time detecting portion 23, A cursor movement vector unit 32 for adding a velocity component detected by the velocity detection unit 31 and a direction component detected by the contact position detection unit 22 to detect a vector value for moving the cursor, And a code generating unit 33 for converting the cursor movement vector detected by the vector unit 32 into a remote control code format.

The transmitting means (40) includes a light emitting diode.

Reference numeral 24 denotes a rubber switch.

3 to 8, the remote control transmitter having the pointing function of the present invention having the above-

First, the remote control transmitter 100 has pointing means 20 for recognizing the pressing information of the louver switch 24 indicating the cursor direction so as to control the motion information capable of freely controlling the position of the control cursor on the screen .

3 (a) is a schematic view of a remote controller 100 having a pointing function according to the present invention. FIG. 3 (b) is a diagram showing the shape of a resistor Rb (Rb) provided on the circuit board 60, And conductor (Ea) (Eb) and conductor contact (Ca) (Cb).

As described above, the pointing means 20 is provided with annular resistors Ra and Rb having a constant sectional resistance on the circuit board 60 and conductors Ea and Rb on the inside and outside of the resistor Ra and Rb, And the conductor Ea and the resistor Rb are brought into contact with each other by the conductor contact Cb formed at the lower end of the louver switch 24. [

4, the polarity Vdd (GND) of the power source is connected to the resistors Ra and Rb having the same sectional resistance as that of the resistors Ra and Rb, The A / D converters ADC1 and ADC2 connected to the respective potentials of the contact points are connected to the conductors Ea and Eb, respectively.

At this time, when the user presses the louver switch 24, the resistors Ra (or Ra) at the point P at which the conductive contact Ca (Cb) formed as shown in FIG. 5 is pressed at the lower end of the louver switch 24 Rb) and the conductor (Ea) (Eb), respectively.

6, the potentials V1 and V2 of the resistors Ra and Rb at the positions P1 and P2 where the conductor contacts Ca and Cb are pushed, (ADC1) (ADC2) connected to the A / D converter (Ea) Eb.

The potential V1 (V2) read by the A / D conversion units ADC1 and ADC2 at this time is a contact position (V direction) close to the ground terminal GND and the ground terminal GND of each of the resistors Ra and Rb. ).

The A / D conversion unit ADC3 reads the value of the potential V3 of the battery applied to the entire resistors Ra and Rb because a voltage drop occurs due to continuous use of the battery.

In this way, in the A / D conversion units ADC1, ADC2 and ADC3, the potential V3 of the entire resistor Rb according to the voltage drop of the battery and the potential difference between the potentials of the resistors Ra and Rb And the relative potential V1 (V2) is read.

The pointing means 20 moves the cursor by using the potentials V1, V2 and V3 read from the A / D conversion units ADC1, ADC2 and ADC3 when the contact point is pressed on the resistors Ra and Rb (V_diff) at the depressed point P1 (P2), the position of the contact point, and the pressed time,

The potential difference detection unit 21 receiving the signal converted into the digital signal by the A / D conversion units ADC1, ADC2 and ADC3 receives the voltage value V3 applied to the entire resistor and the voltage value V3 applied to the resistors Ra (V_diff) between the sum (V1 + V2) of the potentials (V1) and

That is, V_diff = V3 - (V1 + V2) (Volts), and this potential difference is an element that determines the moving speed of the cursor together with the time when the louver switch 24 is pressed.

The contact position detection unit 22 receiving the digital signal through the A / D conversion units ADC1, ADC2 and ADC3 detects the potential V1 or V2 read from one resistor Ra or Rb, (V_diff) of the potential V1 (V2) read out from the reference potential (Ra) Rb is added to the reference potential Vref to detect the position V_dire of the contact point.

That is, V_dire = V1 (or V2) + [(V3-V1-V2) / 2] (Volts), and the detected contact point position V_dire is a direction factor do.

At this time, the direction factor (Direction Factor) can detect the direction (the direction of movement of the cursor) according to the percentage value from which the resistance value applied to the entire resistor from the position V_dire of the contact is read, and the Direction Factor = V_dire / V3 (%).

In other words, when 25% of the resistance value applied to the resistors Ra and Rb is read, 90 ° direction is read when 50% is read, 270 ° is read when 75% is read, 0% or 100% It can be displayed in the 0 ° or 360 ° direction.

The contact time detection unit 23 receiving the digital signal converted by the A / D conversion units ADC1, ADC2 and ADC3 detects the time when the louver switch 24 is pressed by the resistors Ra and Rb .

As described above, the pointing element (potential difference, direction component, pressed time) detected by the pointing means 20 is converted into a remote control code format for moving the cursor by the control means 30. [

First, the velocity component detection unit 31 of the control means 30, which receives the detected potential difference V_diff from the potential difference detection unit 21 and the contact time Tpress detected from the contact time detection unit, detects the potential difference V_diff, Is divided by a predetermined reference value Vref and a value obtained by dividing the contact time Tpress by a predetermined reference value Tref is used to detect the value of the speed factor.

That is, the speed factor is [(V_diff / Vref) + (Tpress / Tref)] (%) which is proportional to the area of the louver switch 24 pressed, It can be seen that the component is large. Therefore, when the louver switch 24 is strongly depressed, the pressed area becomes wider and the potential difference (V_diff) becomes large, so that the speed component becomes large.

The cursor movement vector portion 32 of the control means 30 receiving the direction factor detected by the contact position detection portion 22 receives the velocity component detected from the velocity component detection portion 31 ) Are added to the X and Y axis vector values for moving the cursor.

That is, the cursor movement vector unit 32 calculates a direction factor (%) based on the determined axis (X, Y) as [360 × Direction component], and the angular component and the velocity component are numerically expressed as coordinate values in the X and Y-axis directions as shown in the following Equation (1). 8

X = velocity component x COS (360 x direction component)

Y = velocity component x SIN (360 x direction component)

.

Then, the two-dimensional coordinates (X, Y) values detected from the cursor moving unit 32 are input to the code generating unit 33 and converted into remote control codes.

Therefore, the control means 30 converts the direction component and the velocity component of the pointing element input from the pointing means 20 into two-dimensional coordinate values, and outputs the remote control code to the transmitting means 40 for moving the cursor do.

The transmitting unit 40 outputs the signal output from the code generating unit 33 of the control unit 30 to a remote receiver (not shown) to accurately point the direction and speed of the cursor.

The control means 30 of the present invention stops the microcomputer oscillation of the control means 30 in a normal standby state so as to reduce the power consumption of the battery and controls the resistor Rb by the louver switch 24, (Not shown) for allowing the power supply Vdd to be supplied when the contact of the power supply Vdd is depressed.

Therefore, the activation means prevents the power supply Vdd from being supplied to the resistor Rb in the standby state, and if the contact is pressed to the resistor Rb in the standby state, the A / D conversion units ADC1, ADC2, and ADC3) is recognized as a zero voltage (0 V).

Then, since the potential of the A / D conversion units ADC1, ADC2, and ADC3 abruptly drops from the voltage Vdd to the zero voltage (0 V), the input potential changes from high to low The change causes an interrupt of the microcomputer by the negative edge, and the oscillator of the control means 30 is driven normally.

When the key pressed by the louver switch 24 is released, the control means 30 automatically switches to the standby state after a predetermined time delay and outputs a voltage (A) to the A / D conversion units ADC1, ADC2 and ADC3 Vdd) is supplied, the power supply to the resistors (Ra) and (Rb) is stopped, and the oscillation is stopped.

Therefore, in order to manipulate the direction of the cursor in the standby state, the cursor can be directly controlled by one touch.

As described above, the present invention can realize an electric pointing function by using a simple circuit without using a trackball or a porter coupler for detecting a mechanical movement such as a trackball mouse, while reducing the power consumption, So that the price competitiveness can be improved.

Claims (5)

A remote controller capable of controlling the movement of a cursor on a screen, A pointing element for moving the cursor by measuring the potential of each resistor at the pressed point when the contact of the conductor is pressed on the resistor, Pointing means for outputting, And a control means for converting the coordinates into coordinate values of a direction component and a velocity component from a pointing element input from the pointing means and then converting the coordinate system into a remote control code format for designating a cursor position and outputting to a transmission means. Remote control transmitter having function. The pointing device according to claim 1, wherein the pointing means comprises: a plurality of A / D conversion units for reading a potential applied to the entire resistor to measure the potential applied to the resistor and a potential at a point of contact of each resistor to convert them into digital signals; A potential difference detecting unit and a contact time detecting unit for detecting a potential difference and a pressed time corresponding to the width pressed by the resistor so as to detect the velocity component of the pointing element in accordance with the digital signal converted from the A / D converter, And a contact position detecting unit for detecting a direction component obtained by adding a value obtained by bisecting a difference between a potential read from the resistor and a potential read from each resistor. The apparatus according to claim 1, wherein the control means comprises: a velocity component detector for detecting a velocity component by adding the detected potential difference from the potential difference detecting portion and the pressed time detected by the contact time detecting portion; A cursor movement vector unit for detecting a two-dimensional vector for moving the cursor by combining directional components detected by the detection unit, and a cursor movement vector conversion unit for converting the cursor movement vector detected by the cursor movement vector unit into a remote control code format, And a code generating unit for outputting the code to the remote control transmitter. The microcomputer according to claim 1, wherein the control means stops oscillation of the microcomputer in a standby state, prevents power from being connected to the resistor, and provides an interrupt generated from the A / D converter when the resistor contact is pressed, Wherein the remote control transmitter includes an activation means for enabling the remote control transmitter to transmit the remote control signal. The electronic device according to claim 2, wherein the potential difference detected by the potential difference detecting unit is a value obtained by receiving a digital signal from the A / D converting unit and subtracting the sum of the potentials at the contact points of the resistors from the voltage value applied to the entire resistor . The direction component of the contact position detection unit is determined by adding a value obtained by dividing the difference between the contact position potential of the constant resistance member and the potential read out from the resistance member by a value obtained by dividing the resistance value applied to the entire resistor. A remote controller having a pointing function.