KR960006684A - Interface circuit and method for reducing reception error of remote control signal - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

Receive Remote Control Signal

2. The technical problem to be solved by the invention

Minimize the error when receiving the remote control signal

3. Summary of the Solution of the Invention

Detects the variations of the remote control signal, calculates the period of the detected variations, and compares the period between the calculated variations with preset reference times, and the period of the variation meets the range of reference times in the comparison analysis process. If it does, it handles with normal remote control signal, otherwise it handles error.

4. Important uses of the invention

Receives a remote control signal to minimize the reception error in the device controlling the device

Description

Interface circuit and method for reducing reception error of remote control signal

As this is a public information case, the full text was not included.

3 is a circuit diagram of the present invention for interfacing a remote control signal.

Claims (12)

A circuit for receiving a remote control signal, comprising: means for receiving a remote control signal, means for detecting a first variation of the remote control signal, means for detecting a second variation of the remote control signal, and a timer signal Means for generating a reference time for determining whether or not an error occurs in the remote control signal, receiving the first and second transition detection signals as an interrupt signal, and counting the timer signal when the interrupt signal is received. And control means for calculating the time between the variations, wherein the control means detects variations of the received remote control signal, compares the period of the detected variations with the reference times, and analyzes the variation period. If the time satisfies the range of reference times, it is processed as a normal remote control signal. An interface circuit of a remote control signal, wherein the call is error-processed. The interface circuit of claim 1, wherein the first shift of the remote control signal is a falling shift and the second shift is a rising shift. A circuit for receiving a remote control signal, comprising: a receiver for receiving a remote control signal, converting the signal into an electrical signal and shaping the waveform, a first buffer for detecting a first variation of the waveform shaped remote control signal, and the waveform shaping A second buffer for detecting a second variation of a remote control signal, a timer for generating a timer signal, and preset data of a first reference time to a third reference time, wherein the first and second variation detection signals And a general purpose central processing unit for counting the timer signal upon receiving the interrupt signal, and counting the period between the first and second variations in which the general purpose central processing unit is continuously received. If the period between the transitions satisfies the range of the first reference time to the third reference time, the controller processes the normal remote control signal and removes the range of the first reference time to the third reference time. After the interface circuit of the remote control signal, characterized in that the error processing a remote control signal. 4. The logic of claim 3, wherein the general-purpose CPU has a first logic when the time from the first variation to the second variation and the time from the second variation to the first variation are the first reference time and the third reference time, respectively. And determining the data as the second logical data when the time from the first variation to the second variation and the time from the second variation to the first variation are the second reference time and the third reference period, respectively. Remote control signal interface circuit. The interface circuit of a remote control signal according to claim 4, wherein the second reference time and the third reference time have the same time period. The method of claim 3, wherein the first interrupt terminal is set to a fall transition of the general-purpose central processing unit, and the falling transition of the remote control signal is reversed by inverting the waveform-shaped remote control signal. A first buffer that detects the first variation and outputs the first interrupt terminal to a first interrupt terminal; and a first interrupt terminal set to a rising variation of the general-purpose central processing unit, and non-inverts the waveform-controlled remote control signal. And a second buffer which detects a rising transition of a remote control signal as the second variation and outputs it to the second interrupt terminal. A method of receiving a remote control signal, the method comprising: receiving a remote control signal and performing waveform shaping into a digital signal, continuously detecting first and second variations of the digital remote control signal, and detecting the variation Comparing and analyzing the period between the variation and the reference time for determining whether there is an error, and processing the normal remote control signal when the period between the variation in the comparison analysis process satisfies the range of the reference time And error processing the received remote control signal when the time between the variations in the comparative analysis is out of the range of the reference times. 8. The method of claim 7, wherein the first shift is a falling shift of the digital remote control signal and the second shift is a rising shift of the digital remote control signal. A method for receiving a remote control signal using a general purpose central processing unit having a first reference time to a third reference time that is set in advance for determining whether there is a normal state, the first or second variations of the remote control signal are continuously The time between the detected variation and the previous variation by counting the time between the detected variation and the predetermined reference time and comparing the set reference times with each other; Normally processing the remote control signal when satisfying the time range, and error processing the remote control signal when the period between the variations in the comparison and analysis process is out of the range of the first reference time to the third reference time Interface method of the remote control signal, characterized in that consisting of a process. The method of claim 9, wherein the processing of the normal remote control signal comprises: the time from the first variation to the second variation and the time from the second variation to the first variation, respectively; The process of determining the time and date as the first logical data, and the time from the first variation to the second variation and the time from the second variation to the first variation are respectively the second reference time and the third reference time date and time. Interface method of a remote control signal, characterized in that the process of determining by the logic data. The method of claim 10, wherein the second reference time and the third reference time have the same time period. 12. The interface of a remote control signal according to any one of claims 9 to 11, wherein the first shift is a falling shift of the digital remote control signal and the second shift is a rising shift of the digital remote control signal. Way. ※ Note: The disclosure is based on the initial application.