KR970004634B1 - Remote control with a decline detection switch and the control method thereof - Google Patents

Abstract

Disclosed are a remote controller which sends various signals for operating an appliance, such as VTR, according to an inclination degree thereof and a method for operating the remote controller. The remote controller comprises a key matrix(11) for selecting a function of an appliance, a microcomputer(12) which generates a control signal based on an input signal of key matrix(11), an infrared ray generator(13) which is controlled by microcomputer(12) for emitting an infrared ray, inclination angle detecting portions(21,22) which detect an inclination degree of the remote controller in the left and right directions, a key-scan switch(23) which is controlled by microcomputer(12) so as to switch the signals inputted from inclination detecting portions(21 and 22), and an A/D converter(24) which converts an analog signal to a digital signal and sends the digital signal to microcomputer(12). The method comprises the steps of scanning keys(S10), detecting an inclination degree of remote controller(S20), comparing and determining a digital voltage(S30), and carrying out the function according to the determined digital voltage(S40).

Description

Remote control with left and right tilt size detection switch and its control method

1 is a configuration diagram of a conventional tilt detection switch.

2 is a circuit diagram of a remote controller provided with the present invention left and right tilt size detection switch.

Figure 3 is a partial detailed configuration of the remote control equipped with the present invention left and right tilt size detection switch.

4 is an operation flowchart of a remote controller equipped with the present invention left and right tilt size detection switch.

Figure 5 shows the operation of the left and right detection unit of the remote control equipped with the left and right tilt size detection switch of the present invention, (a) is a state of having a small slope, (b) a state of having a large slope.

6 is a chart of input voltage according to left / right slope.

* Description of the symbols for the main parts of the drawings *

11: key matrix, 12: micom,

13: infrared oscillator, 21: left detection unit,

22: right detection unit, 23: kiss can switch,

24: A / D processing unit, 25: conductive liquid,

26 casing.

The present invention relates to a remote controller using a left and right tilt size detection switch that detects left and right tilt size angles and performs a function such as fast forwarding and double-speed forwarding of a VTR with a remote controller for transmitting remote control data.

The general remote control is composed of a key matrix that can be arbitrarily selected by the user by displaying numbers or letters, a micom that controls the device according to the force of the key matrix, and an infrared transmitter that emits infrared rays under the control of the micom. When the user presses the key matrix arbitrarily, the device emits infrared light through the infrared oscillator according to the signal input through the key matrix to the microcomputer to control the operation of the device.

Conventionally, a remote control having an inclination switch is connected to a sensing switch to be inclined to a microcomputer of such a general remote control. As shown in FIG. 1, the inclined sensing switch includes a plurality of upper electrodes attached to the upper side of the case 1. (2), the lower electrode 3 attached to the lower side of the case 1, and the electrically connecting between the upper and lower electrodes (2, 3) in the inclined direction of the sealed case (1) It consisted of a liquid.

The remote control having the conventional tilt detection switch has one lower electrode 3 in the lower side of the case 1 and four upper electrodes 2 in each direction on the upper side thereof. ) And the upper electrode 2 in one inclined direction above the case 1 are short-circuited as a conductive liquid and operated as a switch, and the microcomputer scans a key input from the key matrix and infra-red the data by the scanned key data. The infrared transmitter transmits infrared rays while the transistor is 'on / off' by a carrier generated from a carrier (about 38KHz) terminal inside the microcomputer.

In addition, the output of data in the microcomputer is 'high' when the section on which the carrier is loaded is 'low', and the section of 'high' by 'low' is one section by the width of one section. Each data is operated to be organized.

However, in order to drive the set of the VCR of the remote control equipped with the conventional tilt detection switch, the corresponding key must be pressed to match each function, especially in the dark night, it is inconvenient to find and press the corresponding key. In other words, the direction of the inclination in the direction of the switch can be known, but there was a problem that the magnitude of the inclination cannot be known.

An object of the present invention is to solve such a conventional problem, and to detect the left and right tilt size angle and to transmit the remote control data according to the value of the tilt size to perform the functions such as fast-forwarding and fast forwarding of the VTR To provide a remote control and a control method provided with a left and right tilt size detection switch.

Hereinafter, the technical and method configurations of the present invention will be described in detail.

The remote control using the left and right tilt size detection switch of the present invention outputs a control signal according to the input of the key matrix 11 and the key matrix 11 that can be arbitrarily selected by the user, as shown in FIGS. 2 and 3. The microcomputer 12 and the infrared oscillator 13 which emits infrared rays under the control of the microcomputer 12, the left / right sensing unit 21, 22 for sensing the magnitude of the inclination angle of the remote control; And a kisscan switch 23 controlled by the microcomputer 12 to switch signals input from the left / right sensing units 21 and 22 and an electrical analog signal applied from the kisscan switch 23. The technical configuration is characterized by including an A / D processing unit 24 which is converted into a digital signal and applied to the microcomputer 12.

The left sensing unit 21 is composed of two switches SW _L1 and SW _L2 connected in parallel to one end of the low power supply and the other end of the resistors R _{L! And} R _L2 , respectively.

The right sensing unit 22 is composed of two switches SW _r1 and SW _r2 connected in parallel to one end of the low power supply and the other end of the resistors R _r1 and R _r2 , respectively.

The left and right sensing units 21 and 22 have the conductive liquid 25 embedded therein so that the terminals of the switch having a predetermined interval are attached to the upper side of the sealed casing 26 and the terminals corresponding to the lower side thereof are attached.

In addition, the remote control control method provided with the left and right tilt size detection switch of the present invention, as shown in Figure 4, the kisscan step of applying a signal to the kisscan switch 23 to detect the tilt of the remote control in the microcomputer 12 (S10) and the tilt detection step (S20) of applying the signal applied through the left / right detection unit (21, 22) by the kisscan step (S10) to the microcomputer 12 through the A / D processing unit 24 (S20) ), A comparison / determination step (S30) of comparing and determining the digital voltage detected in the tilt detection step (S20), and performing an operation according to a voltage specified by the voltage determined in the comparison / determination step (S30). The operation performing step (S40) is characterized by the technical method.

The remote control having the present invention left and right tilt size detection switches are applied from the left / right sensing units 21 and 22 selected by the kisscan switch 23 as shown in FIGS. 2 to 6. When the signal is converted by the A / D processing unit 24 and applied to the microcomputer 12 (S20), the microcomputer 12 emits infrared rays to the device through the infrared transmitter according to the direction and magnitude of the signal (S30) to operate the device. In the embodiment of the present invention, it is assumed that the bird's-eye detection unit 21 controls the fast-forwarding operation of the VCR, and the right detection unit 22 controls the rewinding operation of the VCR. It is assumed that a difference in voltage occurs according to the sensed switch, and that the speed of performing the operation of controlling the VCR in the microcomputer 12 is slowed and slowed down by the voltage difference, and the correlation is as shown in the diagram of FIG. invent If the description follows.

First, referring to the diagram of FIG. 6, when the left / right sensing units 21 and 22 are slightly inclined to the left side, only the first switch SW _L1 is 'on' so that the input voltage Vin = V _L1 = R _L V _DD / (R + R _L1 ), and when it is inclined much to the left, the first switch (SW _L1 ) and the second switch (SW _L2 ) are turned on so that Vin = V _L2 = (R _L2 // R _L1 ) V _DD / {R ₁ + (R _L1 / R _L2 )}. On the right side, as shown in the diagram of FIG. 6, when only the right second switch SW _r1 is 'on', respectively, the input voltage is Vin = V _Ri V _DD / (R + R _r1 ), and the right first switch SW _r1. ), When the second switch SW _r2 is 'on', the input voltage is V _R2 = (R _r1 // R _r2 ) V _DD / {R + (R _r1 // R _r2 )}.

As shown in FIG. 3, the left and right sensing units 21 and 22 have a configuration in which the conductive liquid 25 is injected into a closed space having two electrodes each of left and right, and the liquid and the electrode operate as a switch. When the inclination is small, only one switch is 'on' by the conductive liquid 25, and when the inclination angle is large, both switches are 'on' and are formed to detect the magnitude of the inclination.

In particular, when tilted left and right using the left and right tilt size sensing switch, each voltage is detected by the switch being 'on' by the size of the tilt, which is then converted into a digital value by the A / D processing unit 24 by the A / D processing unit 24. ), The microcomputer 12 operates to output the respective remote control data according to the detected voltage thereof.

The operation of sensing the size of the tilt from the left and right tilt size detection switch in the microcomputer 12 and outputting the corresponding remote control data is the same as the operation flowchart of FIG. 4.

In the operation flow chart of FIG. 4, first, the high voltage is output from the output terminal a of the microcomputer 12 so that the switch kisscan switch 23 is switched to the L terminal side (S10), and the A / D processing unit 24 outputs the data. Read (S20) and first determine whether the V _L1 voltage (S30), if the V _L1 voltage determines that the remote control is slightly inclined to the left to output the 'rewind' remote control data of the VCR (S40). If the voltage is not V _L1 , it is determined whether the voltage is V _L2 (S30), and if the voltage is V _L2, the '2x rewind' remote controller data of the VCR is output (S40). In addition, if the voltage is not V _L1 , V _L2 (S30), the terminal terminates, and outputs 'low' at the output terminal a of the microcomputer 12 (S10) so that the kisscan switch 23 is connected to the R terminal side. Read the data from the D processing unit 24 (S20) and determine whether the read voltage value is the V _R1 voltage (S30). If the remote controller is inclined slightly to the right, the controller outputs the '2x fast forward' remote control data of the VCR. (S40).

In addition, it will be appreciated that the left / right sensing units 21 and 22 may be applied to other operations in addition to the rewinding or fast-forwarding operation.

As described above, the remote control and the control method provided with the left and right tilt size detection switch according to the present invention, the output voltage output by the switches of the left / right sensing units 21 and 22 is determined by the A / D processing unit 24. It is a very useful invention that the microcomputer 12 applied through the control the infrared rays output to the infrared oscillation unit 13 by the respective output voltage to perform a function such as fast forwarding and fast forwarding of the second VCR.

Claims (5)

A key matrix 11 that can be arbitrarily selected by a user, a microcomputer 12 for outputting a control signal according to the input of the key matrix 11, and an infrared oscillator for emitting infrared rays under the control of the microcomputer 12 ( 13), the left and right sensing units 21 and 22 for detecting the magnitude of the inclination angle of the remote controller and the microcomputer 12 to switch the signal input from the left and right sensing units 21 and 22. Kisscan switch 23 controlled by the control unit, and the A / D processing unit 24 for converting the electrical analog signal applied from the kisscan switch 23 into a digital signal and applied to the microcomputer 12 Remote control with left and right tilt size detection switch, characterized in that the configuration. 2. The remote control according to claim 1, wherein the left detection unit (21) is composed of two switches, one end of which is connected in parallel to the resistors at one end of the low power source and the other end thereof. The remote control according to claim 1, wherein the right detection unit (22) is composed of two switches, one end of which is connected in parallel to the resistors and the other end of which is connected to the resistors. According to claim 1, The left and right sensing unit (21, 22) is attached to the terminals of the switch having a predetermined interval formed on the upper side of the casing 26, the conductive liquid 25 is sealed to the inner side, and correspond to the lower side Remote control with left and right tilt size detection switch characterized in that the terminals are attached. In the microcomputer 12, the kisscan step S10 for applying a signal to the kisscan switch 23 in order to detect the inclination of the remote controller, and the left / right sensing units 21 and 22 by the kisscan step S10. A tilt detection step S20 of applying the signal applied through the A / D processing unit 24 to the microcomputer 12 and a comparison / determination step of comparing and determining the digital voltage detected in the tilt detection step S20. And a step S40 of performing an operation according to the voltage specified by the voltage determined in the comparing / determining step S30, at step S40. .