KR920001889B1 - Locking and unlocking apparatus and the method of home electric manufactures using for remote controller - Google Patents

Abstract

a remote controller (1) for generating locking or releasing signals; a system circuit section (2) for decoding the output of the remote controller (1); a signal processing section (4) for comparing the decoded output of the system circuit section (2) with a pre-stored secret code to output a locking or releasing signal; a gate section (5) for blocking or passing the output signals of the signal processing section (4); and a displaying section (6) for displaying the locked state of the home appliance in accordance with the output signals of the signal processing section (6).

Description

Locking and unlocking device for home appliances using remote control and method

1 is a block diagram of a locking and unlocking device according to the present invention.

2 is a circuit diagram of one preferred embodiment in which the present invention is employed in a VTR.

3 is a flowchart for locking and unlocking command key input according to the present invention, a is a locking command key input flow chart, and b is a unlocking command key input flow chart.

4 is a diagram showing a memory area of a RAM according to the present invention.

5 is a flow chart of the reset routine and the main routine of the signal processing unit according to the present invention for preventing initial reset and remote control input noise.

6 is a flow chart of an external interrupt routine of a signal processing unit according to the present invention for reading a remote control key signal.

7a and b are flow charts of the internal interrupt timer-B routine of the signal processing unit according to the present invention for reading the locking and unlocking instructions and for locking or unlocking the system according to the read instructions.

8 is a flow chart of the internal interrupt reamer-A routine of the signal processing unit according to the present invention for indicating the locked state.

9 is a waveform diagram of a remote control signal for explaining an example of the remote control signal system.

* Explanation of symbols for main parts of the drawings

1: remote control 2: system circuit

3: micom 4: signal processor

5 gate portion 6 display portion

Q1-Q15: transistor R1-R6: resistance

The present invention relates to a device for locking and releasing a home appliance using a remote controller and a method thereof, and more particularly to a VTR, a TV, or an audio device using a remote controller, when an operator stores a predetermined code number through a remote controller, The present invention relates to a device for locking and unlocking a home appliance using a remote control capable of unlocking the system only by a qualified person by determining whether the operator is a qualified person by determining whether the same numeric information as the stored cipher number is provided.

As household appliances, such as VTRs, TVs, or audio equipments using remote controllers are widely used and widely used, they can be easily accessed by anyone, and thus can be easily operated. Was done. In particular, this feature will effectively block children from easily operating the VTR or TV at home.

In general, a home appliance using a remote controller is configured to receive a remote controller signal corresponding to a key operation of the remote controller, recognize the received remote controller signal in a microcomputer, and perform an operation corresponding thereto. In the remote control signal system, as shown in FIG. 9, the remote control signal transmitted according to one key operation includes a repetition of a lead pulse (A), an 8-bit order code (B, C), and an 8-bit DATA code (D). And an inverted DATA code (E), wherein the pulses constituting each code have two types of duty cycles, and these two types of duty cycles are configured to correspond to logics '0' and '1'.

Accordingly, it is an object of the present invention to issue a locking or unlocking command with a combination of at least one or more of these remote control signals, and to receive and decode them to lock or unlock the system, thereby preventing the system from being operated by anyone other than the user. It is to provide a locking and unlocking device of home appliances using a remote control.

Another object of the present invention is to provide a locking and releasing device for a home appliance using a remote control that can be more easily installed in a home appliance using a remote control without the existing locking and unlocking function.

Still another object of the present invention is to provide a locking and unlocking method of a home appliance using a remote control that is most suitable for the device and can maintain high reliability.

In order to achieve the above object, the device of the present invention, in a home appliance configured to receive a predetermined remote control signal transmitted according to the key operation of the remote control to recognize it in the microcomputer and perform an operation corresponding thereto, When a remote control signal that commands locking and unlocking including a predetermined password is sent out, the signal is received and decrypted through the system circuit unit. At the locking command, the decrypted password is stored, the locking control signal is output, and the unlocking command is issued. A signal processor (4) which compares the decrypted cipher and the stored cipher with each other and outputs a unlocking control signal if the result is identical; A gate unit 5 for blocking or passing an input signal of the micom according to the locking and unlocking control signal output from the signal processing unit 4; And a display unit 6 for displaying the locked state in accordance with the locking and unlocking control signals output from the signal processing unit 4.

According to the method of the present invention, a home appliance configured to receive a remote controller signal transmitted according to a key operation of a remote controller and recognize the same by a microcomputer and perform a predetermined operation corresponding thereto, wherein the first character key (for example, For example, when the locking command is generated in the order of PlayKey) -Multiple (4 digits) Numeric Keys (Password Numbers) and Second Character Keys (for example, Stop Keys), the key signals generated above are read and the first memory area in the RAM is read. Storing in RDATA; A second step of preparing a numeric key input count according to the previous state if the read key information is equal to the first character key information; A third step of counting the number of numeric key inputs while storing the numeric key information stored in the first memory area RDATA in the second memory area TDATA in the RAM in the order of key input; In the third step, when the number of inputs of the numeric keys is counted and reaches a predetermined number of times, and if the input key information is the second character key information, the number key information stored in the second memory area according to the previous state is stored in the third RAM. Transferring to the memory area (LDATA) and storing and locking the system; In the first step, when the release command is generated in the order of a plurality of numeric keys (password numbers)-first character keys (play keys) according to the key sequence at the time of the second character key (stop key) -locking command through the remote controller. After performing the first step of reading a predetermined key signal generated as described above and storing it in the first memory area RDATA of the RAM, and if the read key information is equal to the second character information, numeric key input is performed according to the previous state. Performing a second step of preparing a count, and then storing the numeric key information stored in the first memory area RDATA in the second memory area TDATA in the order of key input, and counting the numeric key input. After performing step 3 sequentially, if the key information read while the number key input number reaches a predetermined number is the first character key information, the number key information stored in the second memory area TDATA according to the previous state. Since to be before the third mutually comparing the number key information stored in the memory area (LDATA) when the matching result comprises a fifth step of unlocking the system is characterized in that the most suitable for the device described above.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of the present invention, which receives a predetermined remote control signal transmitted from the remote controller 1 in the system circuit unit 2, photoelectrically converts the received remote controller signal, and applies it to the microcomputer 3, In 3), a predetermined input applied to the microcomputer 3 in a home appliance that performs an operation corresponding to the control signal by outputting a control signal corresponding to the predetermined remote control signal to the system circuit unit 2. The signal is connected so as to be applied through a gate part 5 composed of a plurality of resistors R ₁ to R ₅ and transistors Q _{1 to} Q ₄ , and the remote control signal photoelectrically converted by the system circuit part 2 is a signal processing part. (4), the signal processor (4) decodes the input remote control signal, and as a result, in the case of a locking command, a predetermined locking control signal is supplied to the gate (5) to the microcomputer (3). Prescribed The remote control input signal is blocked from being supplied, and in the case of the unlocking command, a predetermined unlocking control signal is supplied to the gate unit 5 so that a predetermined remote control input signal is supplied to the microcomputer 3 and a signal is also connected. The processing unit 4 is configured by driving the display means 6 when the locking command signal is input so as to display the locking state until the unlock command signal is input. Therefore, the signal processor 4 may be configured as a microcomputer to which a predetermined program is input.

2 is a hardware configuration diagram of a preferred embodiment when employed in the VTR of the present invention. In this embodiment, the power control (PW CTL) signal of the microcomputer 3 is supplied to the signal processing unit 4 so that the lock operation is performed in the power-off state by checking the power state of the existing VTR, and the existing system circuit unit 2 Remote control signal photoelectric conversion in the () is supplied to the signal processing unit 4, the existing microcomputer (3) is supplied to the remote control signal, power key input signal, eject key input signal and cassette in switch signal through the gate unit (5) The gate part 5 is also supplied with a control signal for blocking or passing the input signal applied to the signal processing part 4 according to a locking or unlocking command, and is provided to the locking or unlocking command of the signal processing part 4. Accordingly, the control signal for displaying the locked state is supplied to the display unit 6 including the digitron, the transistor Q5, and the resistor R6 provided in the existing system circuit unit 2.

The power key input signal and the eject key input signal output from the system circuit unit 2 are directly applied to the microcomputer 3, and the remote controller signal is applied to the microcomputer 3 through the resistor R1. In addition, the remote control signal through the resistor R1 and the power key input signal and the eject key input signal directly supplied to the microcomputer 3 are each resistance when a predetermined control signal output from the signal processor 4 is output. The transistors Q1, Q2, and Q3 are connected to the ground via R2, R3, and R4, respectively. The switch signals, which are cassettes, are output from the signal processor 4, respectively. When a predetermined control signal is inputted to the transistor Q4 via the resistor R5, the transistor Q4 is turned on to be connected to the microcomputer 3 so as to be applied.

Here, except for the power key signal and the eject key signal among the various key signals in the system, the system does not operate even if it is input to the existing microcomputer 3 because it is meaningless in the power-off state.

In addition, the reason why the switch signal which is a cassette is cut off is to prevent the operation by the automatic program or the automatic reservation function adopted in most VTRs.

Here, the display unit 6 does not provide a separate display, and in order to use the existing digitron, the digitron transistor Q5 output from the signal processing unit 4 is repeatedly turned on and off at a predetermined cycle to turn off the entire digitron. It is configured to blink and display the locking status. At the release command, the transistor Q5 is kept in an off state so that the digitron is restored.

3 is a view showing the configuration of the locking and unlock command signal according to the present invention. 3A is a key input flow chart of the locking command signal, and FIG. 3B is a key input flow chart of the unlock command signal. The locking and unlocking command signal is configured in the order of the first letter key-number key four-second letter key. In this embodiment, the locking command signal is generated in the order of the play key-number key four-stop key, and the locking command. The four-digit hour is a password that the user chooses. In case of release command, press stop key first, then press 4 digit key memorized by user when locking command, and press play key to generate release command signal.

The locking and unlock command signals generated in this way are supplied to the signal processing section 4 and decoded.

The signal processing section 4 is composed of a known microcomputer, i.e., a microcomputer, including a central processing unit, a storage unit, an input / output interface, a clock generator, and the like. The signal processor 4, i.e., the microcomputer, in this embodiment is configured to perform the following functions.

First: A function that prevents noise of the remote controller input by determining whether the pulse is valid by counting the high period (τ) and the low period (T-τ) of each pulse constituting the key signal (where T is a pulse). Period, τ is pulse width)

Secondly, the function of reading the binary code corresponding to each pulse constituting the remote control key signal

Third: It decodes whether it is locking command or unlock command according to the binary coded remote control key input sequence, and as a result, when it is locked command, it stores the password number which is formatted as the input numeric key signal and outputs the locking control signal. At the time of command, it compares the password number formed by the input numeric key signal with the password number stored at the time of locking to determine whether the operator is a qualified person, and outputs the unlock control signal only when the operator is a qualified person.

Fourth: it has a function of outputting a locking display control signal for blinking and driving the display unit 6 in accordance with a locking command.

The RAM in the microcomputer constituting the signal processing section 4 is an RDATA area which is a first memory area for reading a binary coded signal corresponding to an input remote control key signal as shown in FIG. If the data is a number in the RDATA area, LDATA, a second memory area for storing this numeric data in key input order, and a third memory area for storing numeric data stored in the TDATA area as a locking encryption number. With an area.

The operation of this embodiment configured as described above will be described with reference to the distribution diagrams shown in FIGS.

등을 이용하기 위하여 초기치를 설정하며(102) 입출력(I/O)포트를 초기화한다(103).First, in FIG. 5, the microcomputer constituting the signal processing unit 4 at the same time as the power is turned on, is reset and initialized. After clearing the internal RAM (101), the internal hardware, i.e. timer A, timer S, interrupt INT

An initial value is set in order to use the same (102) and an input / output (I / O) port is initialized (103).

Thereafter, when the user wants to lock the system, the power is turned off, and the above-mentioned locking command is generated through the remote controller 1, so that the microcomputer 3 in the system is powered off. In order to prevent the noise of the remote control input by receiving the applied remote control input, the signal processor 4 of the present invention checks the pulse rising edge of the remote control signal (111), which is the rising edge of the remote control pulse, and the data of the DUTY area of the RAM. Move (DUTY1 → DUTY0, DUTY2 → DUTY1, DUTY3 → DUTY2, DUTY4 → DUTY3) (112). The next DUTY4 is cleared (113), and the “high” period τ of the pulse is stored by increasing the value of the DUTY4 (114) until the falling end of the pulse is input (114). In addition, at the falling end 114 of the input pulse, the data of the DUTY area is moved (116), and then the area of the DUTY4 is cleared (117). Accordingly, the high period [tau] of the pulse stored in DUTY4 is stored in DUTY3. In DUTY4, the value is increased until the next pulse rising edge is input (115) and the low period (T-tau) is stored.

As the operation is repeated as described above, noise can be prevented by checking the input of the remote controller to determine whether it is an effective pulse.

6 is an external interrupt routine, which checks the value of the pulse duty checked in the above-described main routine (121), determines whether it is a valid pulse (122), and if the resultant remote control signal is a valid pulse, the flag LEADER. Determining whether the current interrupt is a time to check from the reader pulse or a portion of the input serial data pulse using the (123).

In the above, when it is time to check from the leader pulse, that is, when the leader flag state is '1', the timer B is enabled (124), and then the leader flag state is reset to "0" (125). The counter buffer TTL is cleared (126).

On the other hand, if the LEADER flag is " 1 ", the TCB is read. At this time, if the TCB reads the TCB into the counter register of Timer B and the value is 162 < TCB < 178 (128), the memory address is set. In this state, it is judged as a lead pulse and detects whether 32≤TCB≤40 (131), and if 32≤TCB≤40, the data is judged as 0 ＂(132), and not 32≤TCB≤40 but 62≤TCB≤79 If the application detects an application (134) and 64 < RTI ID = 0.0 > TCB < / RTI > 79, the data is judged as " 1 " (135) and then the memory address is increased (133). When the read pulse is judged to be 162? TCB? 178, the memory address is set (129), the timer buffer (TLR) is cleared (126), and the serial data pulse is read into the memory RDATA area as a binary code. The memory address MEM ADD is a pointer indicating the number of bits of 32 bits of data.

As described above, if the memory address is increased each time data is read (133), the first step is completed by reading 32-bit data and storing it in the RDATA area (FIG. 6).

7a and b are routines of timer B which are internal interrupts. As described above, since the remote controller data is a short value before the Reamer B is applied, the interrupt is not interrupted while reading the data.

Therefore, the interruption means that all 32-bit data is received and one remote control key signal is input. Therefore, when the interrupt of the timer B occurs, disable the timer B (140), and then check the power off state to prevent malfunction due to noise (141), and check the memory address value if the power off state ( 143). At this time, if it is confirmed that all 32-bit data of the memory address has been received, it is checked whether it is a valid key signal with the order code repetition and inversion data (144). If the value of the key input counter (DCNT) is 1450 ＂(145), which is determined as a valid key signal in the above, it is determined whether the current state is the locked state or the unlocked state according to the locking flag (LOCKFLG) indicating the locked state (146). If the result is LOCKFLG + 0, it is determined whether the data of the first key signal is the play key signal data (147). If the signal data is the play key, that is, when the second step is completed, the key input counter DCNT value is increased and RDATA is determined. After clearing the area (149), the leader flag (LEADER) is set to " 1 " state (150).

In addition, since the play key is processed as described in the first numeric key signal as described above, 32-bit data is stored in the RDATA area, and the key input counter (DCNT) value is ＂1＂ (151). (152) If it is not a number, it is not a locking command. Therefore, the value of the key input count (DCNT) is initialized, i.e., "0" (153), and the TDATA area and the D pointer are cleared sequentially. As described above, the RDATA area is cleared (149), the leader flag is set to " 1 " state and then returned (149, 150).

However, if the data is numerical data in step 152, the key input counter value is increased (156), stored in the TDATA area (157), then the D pointer is increased (158), and the RDATA area cleared (149). After the step, the third step is completed by repeating the process of returning the leader flag state to the state of # 1 state and returning four times.

If four numeric keys are continuously inputted by repeating the above state, it is processed as described and four numeric data are sequentially stored in the TDATA area. After all four numeric keys are input, it is determined whether the value of the key input counter DCNT is '5' (160).

At this time, if four numeric keys are not pressed in succession, it is considered that the locking command signal is not. However, if the value of the key input counter is " 5 ", after determining whether the lock state is locked or unlocked according to the locking flag (LOCKFLG) state (161), if the lock input is LOCKFLG + 0, the RDATA of the sixth input key signal is unlocked. If it is detected that the data stored in the area is the data of the stop key signal and the stop key signal is detected, the microcomputer determines that it is a complete locking command signal (162), and transfers four-digit numeric data stored in the TDATA area to the LDATA area (163), After setting the locking flag to '1' (164), the indicator is turned on (165), and the 'high' signal is output to the output port of Fig. 3, that is, PW CTL, EJECT CTL and RMCN CTL as the locking control signal. The CS IN SW CTL outputs a low signal as a locking control signal (166) to enable timer A (167), and then performs 174 routines to receive the next signal.

Accordingly, the transistors Q1, Q2, and Q3 of the gate portion 5 of FIG. 2 are all turned on in step 166, and the transistor Q is turned off to be applied to the existing microcomputer 3, The input of the eject key signal, the remote control signal, and the cassette switch signal is cut off, thereby completing the fourth step of locking the system.

Such a system locking state is indicated by the display unit 6 flashing and being driven by the internal interrupt routine of timer A in FIG. That is, FIG. 8 is a routine for blinking the entire digitron, and when the enabled timer A is disabled after a predetermined time and the locking signal is read (180), the locking flag (LOCKFLG) checks the locking state ( 181) If locked, the digittron counter (DISCNT) value is incremented (182), and if it is detected that the counter value is overflowed (183), otherwise enabled timer A (185), and this is repeated. When the overflow of the digitron counter DISCNT continues to increase, the output pod DIGITRON CTL level is reversed (184), and the timer A is enabled (185). Therefore, while the digitron counter DISCNT continues to increase, the digitron control signal is maintained in the high state or the low state, and is inverted according to the occurrence of the overflow, thereby driving the digitron blinking. In FIG. 2, when the digitron control signal is a low signal, the transistor Q5 is turned off to increase the entire digitron. When the digit high control signal is turned on, the transistor Q is turned on, and the digitron is connected to the existing microcomputer 3. Return to control. Therefore, since the digitron control signal is repeatedly inverted in the locked state as described above, the digitron is flickered entirely, so that the user can visually recognize that the current home appliance is in the locked state.

As described above, in order to release the system in the locked state, the user first presses the stop key, presses the numeric key corresponding to the cipher number recorded at the time of locking, and finally presses the play key to generate the release command signal. As described above, when the unlock command signal is input to the microcomputer of the present invention, the binary code is read into the RDATA area, and the stop key is confirmed according to the locking flag state (159). After storing the information in the first memory area (RDATA) and then the second character key is input, the second and third steps of sequentially storing the numeric data of the numeric key in the TDATA area are sequentially performed, and then in the locking flag state. If the PlayKey is checked (168) and the password number stored in the TDATA area is compared with each other by comparing the password number stored in the LDATA area (169), the LDATA area is cleared (170), and then the locking flag is cleared. (171), the indicator is released (172), and the power key and the eject key invert the remote control input control signal from high to low, and the low The signal is supplied to the gate portion 5 as a release control signal, and the switch control signal, which is a cassette, is inverted from a low state to a high state, and the high signal is sent as a release control signal to provide the gate portion 5 of the gate portion 5. The transistors Q1, Q2 and Q3 are turned off and the transistor Q4 is turned on so that a power key signal, an eject key signal, a remote control input and a switch signal which is a cassette can be input to the microcomputer 3. The lock state is released by returning to the state (173). The fifth step is complete.

In addition, if timer A is disabled (180) and the locking flag (LOC KFLG) is "0", the digitron counter (DISCNT) is cleared (186), and the digitron control signal is kept high. (187) The digitron is returned to be controlled by the existing microcomputer (3).

As described above, in the present invention, when an operator provides a predetermined locking command or release command signal through a remote control for home appliances using a remote control, such as a VTR, a TV, or an audio device, the cipher number provided during the locking command is stored. It is judged whether or not the operator is a qualified person by comparing the cipher number with the cipher number provided at the release command.

Therefore, if the cipher number provided at the locking command and the cipher number provided at the unlock command are not unlocked, various home appliances cannot be driven, and only when the coincidence matches.

In the present invention, since the user can arbitrarily change and store the cipher number at the time of the locking command, the confidentiality can be greatly improved.

In addition, the present invention is very easy to install in the existing product without the locking and unlocking device because it consists of a separate micom and a simple interface circuit.

Claims (3)

A home appliance configured to receive a predetermined remote control signal transmitted according to a key operation of the remote controller 1 and recognize the same by the microcomputer 3 and perform an operation corresponding thereto, wherein the remote controller 1 determines the predetermined remote control unit by a key combination. When the remote control signal of the locking and unlock command including the password of the transmission is received, it is decoded through the known system circuit unit 2, if the locking signal is stored in the decrypted password and outputs the locking control signal, if the unlock signal is decrypted A signal processor (4) for comparing the password with the stored password and outputting a unlocking control signal when the password is matched with each other as a result; A plurality of resistors R ₁ to R ₅ and transistors Q _{1 to} Q ₄ are configured to block a predetermined input signal input to the microcomputer 3 according to the locking release control signal output from the signal processing unit 4. And gate portion 5 for passing through; Locking release device for home appliances using a remote control, characterized in that the interconnection with the display unit (6) for displaying the locking state in accordance with a predetermined locking and unlocking control signal output from the signal processing unit (4). 2. The signal processing unit (4) according to claim 1, wherein the signal processing unit (4) counts the high period (τ) and the low period (T-τ) of the pulses constituting the key signal transmitted from the remote controller 1 to obtain an effective pulse. Determine whether or not to prevent the noise of the remote control input, and read the input key signal through the known system circuit unit 2, and at the same time decodes whether it is a locking command or unlock command by the key information read in the order of key input. If it is a locking command, it reads the read numeric key information and outputs a locking control signal to the gate unit 5. If the unlocking command, it is compared with the read numeric key information and the stored numeric key information to determine whether the operator is a qualified person. When the gate unit 5 outputs a release control signal, and according to the locking command is configured to output a locking display control signal for driving the display unit 6 flashing Locking release device for home appliances using a remote control, characterized in that. A home appliance configured to receive a remote controller signal transmitted according to a key operation of the remote controller 1 and recognize the same by the microcomputer 3 and perform an operation corresponding thereto, wherein the first character key (play key) -multiple of the remote controller is used. A first step of reading a generated key signal and storing it in a first memory (RDATA) area in RAM when a locking command is generated in the order of numeric key (password number)-second character key (stop key); A second step of detecting whether the read key information is a first character key and preparing a numeric key input count according to a previous state if the first character key is information; A third step of counting the number of numeric key inputs while storing the numeric key information stored in the first memory area (RDATA) in the second memory (TDATA) area of the RAM in the order of the input of the encrypted numeric keys in the second step; As a result of counting the number of numeric input in the third step, if the numeric key input reaches a predetermined number of times, and then the detected key information is the second character key information, and if it is the second character key, the second memory area is determined according to the previous state. The fourth step of reading the numeric key information stored in the (TDATA) and transferring it to the third memory (LDATA) area in the RAM, and then locking the system and the second character key (stop key) -locking command at the remote controller. When the release command is generated in the order of a plurality of numeric keys (password number)-first character keys (play key) according to the key sequence, the key signal generated as in the first step is read and the first memory area RDATA of the RAM is read. After the second key is read, the key information read after storing in the second character key information is performed. Stored numbers Key information read in a state in which the number of inputs of the numeric keys reaches a predetermined number of times after sequentially performing the third step of counting the number key input while storing the zaki information in the second memory area TDATA of the RAM in the order of key input. If the first character key is information, the numeric key information stored in the second memory area TDATA and the numeric key information stored in the third memory area LDATA are compared with each other according to the previous state. Locking and unlocking method of home appliances using a remote control, characterized in that consisting of steps.

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