KR930004090B1

KR930004090B1 - Method and device for locking mfc telephone

Info

Publication number: KR930004090B1
Application number: KR1019900019608A
Authority: KR
Inventors: 변석재
Original assignee: 현대전자산업주식회사; 정몽헌
Priority date: 1990-11-30
Filing date: 1990-11-30
Publication date: 1993-05-20
Also published as: KR920011102A

Abstract

The method for minimizing the locking time comprises: a filter means (6) connected to the intermediate frequency means (5) and passing only the signal of specific frequency (HMCT); a means (7) connected to the band pass filter means of specific frequency (6) and rectifying the negative part of detected signal; a detecting and comparing means (8) connected to the negative rectifying means (7) and the main processing unit (9) and outputting the detected specific frequency to the MPU (9). This method is useful for communication products using multi-channel.

Description

Locking device and method for a common frequency wireless telephone

제1도는 본 발명에 의한 주파수 공용 방식 무선 전화기의 록킹 장치의 블럭도.1 is a block diagram of a locking device for a frequency-sharing wireless telephone according to the present invention.

제2도는 본 발명에 의한 주파수 공용 방식 무선 전화기의 록킹 방법의 순서를 나타낸 흐름도.2 is a flowchart showing a procedure of a locking method for a frequency-sharing wireless telephone according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 듀플렉서 2 : 무선 주파 증폭기1: duplexer 2: wireless frequency amplifier

3 : 혼합기 4 : 중간 주파 증폭회로3: mixer 4: intermediate frequency amplifier circuit

5 : 중간 주파 회로 6 : 특정주파수 대역통과필터5: intermediate frequency circuit 6: specific frequency bandpass filter

7 : 네가티브 정류회로 8 : 특정주파수 검출비교기7: negative rectifier circuit 8: specific frequency detection comparator

9 : MPU 10 : 비교기9: MPU 10: Comparator

11 : 데이타필터 12 : 변조회로11 data filter 12 modulation circuit

13 : 송신 전압제어발진기 14 : 무선주파증폭기13: transmit voltage controlled oscillator 14: radio frequency amplifier

15 : PLL 16 : 수신전압제어 발진기15: PLL 16: Receive Voltage Controlled Oscillator

본 발명은 주파수 공용 방식 무선전화기에 있어서, 혼신 및 비혼신 채널(Channel)을 검출하여 처리하는 록킹장치 및 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking apparatus and method for detecting and processing a mixed and non-converged channel in a frequency shared wireless telephone.

종래에 사용된 록킹 방법중 세가지를 선택하여 설명하면 다음과 같다.When selecting three of the conventional locking method described as follows.

첫째, 반송파(carrier)를 인지하여 록킹하는 방법은 소프트웨어의 채널 스캔시간(Scan Time)과 하드웨어의 채널별 VCO(Voltage Controlled Oscillator) 안정시간을 설정하여 처리하는 것이다.(채널별 VCO 안정 시간을 50ms로 지정)무선전화기의 휴대장치에서 고정장치로 통신을 시도할 경우 휴대장치는 송신 데이타를 4초를 1주기로 4회 연속해서 고정장치로 전송하는데 1주기 동안 데이타를 20회 정도 연속해서 전송한다. 수신측인 고정장치는 채널을 스캔하면서 혼신채널과 빈채널을 검출한다. 이때 혼신이 검출되면 스캔을 약 200ms(데이타 1개 구조를 200ms으로 가정)동안 중지하고, 수신데이타를 수신하여 데이타의 일치를 판단하여 일치되면 확인 데이타를 휴대장치에 전송하고 일치하지 않으면 다시 스캔을 시도하여 혼신이 검출된 채널에서 수신데이타를 읽어본다. 데이타가 일치하면 휴대장치로 확인 데이타를 보내고 휴대장치가 데이타를 수신하면 록킹이 이루어진다.First, a method of locking by recognizing a carrier is to set and process a channel scan time of software and a voltage controlled oscillator (VCO) settling time of each channel of the hardware (50ms of VCO settling time of each channel). When attempting to communicate with a fixed device from a portable device of a wireless telephone, the portable device transmits 4 seconds of transmission data to the fixed device 4 times in a cycle, and transmits data 20 times continuously for 1 cycle. The receiving device on the receiving side detects the interference channel and the free channel while scanning the channel. At this time, if the interference is detected, the scan is stopped for about 200ms (assuming 1 data structure is 200ms), the received data is received and judged to match the data, if it is matched, the confirmation data is transmitted to the mobile device. Attempt to read received data from the channel where interference is detected. If the data matches, the acknowledgment data is sent to the portable device, and locking is performed when the portable device receives the data.

그러나 상기 종래의 반송파 인지 록킹 방법은 수신측에서 반송파를 인지하면 채널 스캔을 멈추고 200ms 동안 수신데이타를 읽어보기 때문에 실제로 10개의 채널중 한개의 채널이 혼신일지라도 수신하는 측에서는 반송판의 레벨에 따라 인접채널에 영향을 주므로써 여러개의 채널이 혼신채널로 선택되어 질수 있어 록킹시간이 지연되거나 록킹되지 않는 문제가 생길 수 있다.However, the conventional carrier-aware locking method stops scanning the channel and reads the received data for 200ms when the receiver recognizes the carrier. Therefore, even if one of the 10 channels is congested, the adjacent channel is determined according to the level of the carrier. As this affects the multiple channels can be selected as the interference channel, there is a problem that the locking time is delayed or not locked.

둘째, 채널스캔 시간을 늘려 수신 데이타를 비교하여 록킹하는 방법은 소프트웨어의 스캔시간과 하드웨어의 수신 VCO 안정 시간과 데이타 수신시간을 약 250ms 설정하는 것이다. 송신측에서 약 4초동안 20호 정도의 데이타를 연속해서 수신측에 전송하면 수신측에서는 스캔을 시도하여 빈채널과 혼신채널을 검출하며 PLL(Phase Locked Loop)의 데이타를 변경시킨후 250ms 동안 수신데이타를 수신하여 수신데이타의 일치여부를 판정하여 확인 데이타를 송신측에 전송하고 송신측에서 확인 데이타를 수신하면 록킹이 이루어진다.Second, the method of locking the received data by increasing the channel scan time is to set the scan time of the software, the receive VCO settling time of the hardware, and the data receiving time of about 250ms. If the sender transmits about 20 data to the receiver continuously for about 4 seconds, the receiver tries to scan and detects the empty channel and the interference channel and changes the data in the phase locked loop (PLL) for 250ms. Received, it determines whether the received data match, transmits the acknowledgment data to the sender, and locks when the acknowledgment data is received by the sender.

그러나 상기 종래의 스캔시간 확장 록킹 방법은 채널스캔후 무조건 수신데이타를 읽어 데이타의 일치를 판정하여 록킹하므로 록킹시간이 길어지는 문제점이 있다.However, the conventional scan time extension locking method reads the received data unconditionally after the channel scan, and determines and locks the data, thereby causing a long locking time.

셋째, 제어채널(Control Channel)을 이용하는 방법은 사용가능한 여러개 채널중 특정 채널(고정 채널)을 이용하여 통신하여 록킹시키는 방법으로 특정채널이 혼신에 영향을 받을 경우에는 데이타에러가 발생하여 록킹되지 않는 문제점이 있다.Third, a method of using a control channel is a method of locking by communicating with a specific channel (fixed channel) among a plurality of available channels. When a specific channel is affected by interference, data error does not occur and lock. There is a problem.

상기 문제점을 제거하기 위해 안출된 본 발명은 주파수 공용방식 무선 전화기에 있어서, 특정주파수(HMCT : HYUNDAI MCA Cordless Phone Tone)를 MPU(Main Processing Unit)에서 발생시켜 반송파에 데이타와 동시에 전송하고 인접 채널이 대부분의 경우 낮은 주파수인 점을 감안하여 신호의 네가티브 부분을 정류하여 통화채널을 선택함으로서 록킹시간을 최소화한 록킹장치 및 방법을 제공함에 그 목적이 있다.In order to solve the above problems, the present invention provides a frequency-sharing wireless telephone, in which a specific frequency (HMCT: HYUNDAI MCA Cordless Phone Tone) is generated in a main processing unit (MPU) to transmit data simultaneously to a carrier and adjacent channels It is an object of the present invention to provide a locking device and method which minimizes the locking time by rectifying the negative part of the signal in consideration of the low frequency in most cases and selecting a communication channel.

상기 목적을 달성하기 위해 본 발명은 안테나를 통해 반송파에 실린 특정주파수와 데이타를 전송하거나 수신하는 듀플렉스 수단, 상기 듀플렉스 수단에 연결된 제1무선주파 증폭수단, 상기 제1무선주파증폭수단에 연결된 혼합수단, 상기 혼합수단에 연결된 중간주파증폭수단, 상기 중간주파증폭수단에 연결된 중간 주파수단, 상기 중간주파수단에 연결된 비교수단, 상기 중간주파수단에 연결된 데이타필터수단, 상기 비교수단과 데이타필터수단에 연결되어 수신데이타를 처리하고 송신데이타 및 특정주파수를 발생시키는 MPU(Main Processing Unit), 상기 MPU에 연결된 PLL(Phase Locked Loop)수단, 상기 MPU에 연결된 변조수단, 상기 변조수단과 PLL 수단에 연결된 송신 전압제어 발진수단, 상기 혼합수단과 PLL수단에 연결된 수신전압제어 발진수단, 및 상기 송신전압제어 발진수단과 듀플렉스 수단에 연결된 제2무선주파증폭수단(14)을 포함하여 구성되어 휴대장치와 고정장치의 통신을 위해 혼신 및 비혼신 채널을 검출하여 처리하는 주파수 공용방식 무선전화기의 록킹장치에 있어서, 상기 중간주파수단에 연결되어 특정주파수 대역의 신호만을 통과시키는 특정주파수 대역통과필터수단, 상기 특정주파수 대역통과필터수단에 연결되어 상기 특정주파수 대역통과필터수단을 통한 검파신호의 네가티브 부분을 정류하는 네가티브정류수단, 및 상기 네가티브정류수단과 MPU에 연결되어 상기 네가티브 정류수단을 통한 신호에서 특정주파수만을 검출하여 상기 MPU로 출력하는 특정주파수 검출비교수단을 부가하여 구성하고 상기와 같이 구성된 록킹장치를 이용하여 채널을 스캔하여, 혼신, 비혼신 상태를 검색하는 제1단계, 상기 휴대장치가 상기 고정장치로 통신을 시도하기 위해 특정주파수와 데이타를 상기 고정장치로 전송하는 제2단계, 상기 고정장치가 상기 수신된 데이타가 일체할 때까지 상기 특정주파수와 데이타를 검출하는 제3단계, 상기 고정장치가 상기 휴대장치로 확인 데이타를 전송하는 제4단계, 및 상기 휴대장치가 일정 기간내에 상기 확인데이타를 수신하여 통신모드로 들어가는 제5단계에 의해 수행되는 것을 특징으로 한다.In order to achieve the above object, the present invention provides a duplex means for transmitting or receiving a specific frequency and data carried on a carrier through an antenna, a first radio frequency amplifying means connected to the duplex means, and a mixing means connected to the first radio frequency amplifying means. An intermediate frequency amplifier connected to the mixing means, an intermediate frequency stage connected to the intermediate frequency amplifier, a comparison means connected to the intermediate frequency stage, a data filter means connected to the intermediate frequency stage, a connection to the comparison means and a data filter means A main processing unit (MPU) for processing received data and generating transmission data and a specific frequency, a phase locked loop (PLL) means connected to the MPU, a modulation means connected to the MPU, and a transmission voltage connected to the modulation means and the PLL means. Controlled oscillation means, received voltage controlled oscillation means connected to said mixing means and PLL means, and said transmission voltage agent And a second radio frequency amplifying means (14) connected to the air oscillation means and the duplex means, to lock the apparatus of the common frequency type radiotelephone for detecting and processing the interference and non-interference channels for the communication between the portable device and the fixed device. And a specific frequency bandpass filter means connected to the intermediate frequency stage to pass only signals of a specific frequency band, and rectified to a negative portion of a detected signal through the specific frequency bandpass filter means connected to the specific frequency bandpass filter means. And a negative frequency rectifying means, and a negative frequency rectifying means connected to the negative rectifying means and the MPU, and detecting a specific frequency only from a signal through the negative rectifying means and outputting the specific frequency detecting comparison means to the MPU. The first stage of scanning the channel using the scan to search for a And a second step of transmitting, by the portable device, a specific frequency and data to the fixed device to attempt communication with the fixed device, wherein the fixed device detects the specific frequency and data until the received data is integrated. And a fourth step of transmitting the confirmation data to the portable device by the fixing device, and a fifth step of the mobile device receiving the confirmation data within a predetermined period of time and entering the communication mode. .

이하, 첨부한 도면을 참조하여 본 발명의 일실시예를 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

제1도는 본 발명에 의한 주파수 공용 방식 무선전화기의 록킹장치의 블럭도로 1은 듀플렉서, 2는 무선주파 증폭기, 3은 혼합기, 4는 중간 주파 증폭회로, 5는 중간주파회로, 6은 특정주파수대역통과필터, 7은 네가티브 정류회로, 8은 특정주파수검출비교기, 9는 MPU(Main Prossing Unit), 10은 비교기, 11은 데이타필터, 12는 변조회로, 13은 송신전압제어발진기, 14는 무선주파 증폭기, 15는 PLL, 16은 수신전압제어발진기를 각각 나타낸다.1 is a block diagram of a locking device of a frequency-sharing radiotelephone according to the present invention, 1 is a duplexer, 2 is a radio frequency amplifier, 3 is a mixer, 4 is an intermediate frequency amplifier circuit, 5 is an intermediate frequency circuit, and 6 is a specific frequency band. Pass filter, 7 is negative rectifier circuit, 8 is specific frequency detection comparator, 9 is Main Prossing Unit (MPU), 10 is comparator, 11 is data filter, 12 is modulation circuit, 13 is transmission voltage controlled oscillator, 14 is radio frequency An amplifier, 15 denotes a PLL, and 16 denotes a reception voltage controlled oscillator.

본 발명에 의한 주파수 공용방식 무선전화기의 록킹장치는 제1도에 도시한 바와같이 송수신 안테나에 연결된 듀플렉서(1)에 무선주파증폭기(2)를 연결하고 상기 무선주파증폭기(2)에 혼합기(3)를 연결하고 상기 혼합기(3)에 중간주파 증폭회로(4)를 연결하고 상기 중간주파 증폭회로(4)에 중간주파 회로(5)를 연결하고 상기 중간주파회로(5)에 특정주파수(HMCT) 대역통과필터(6)를 연결하고 상기 특정주파수대역통과필터(6)에 네가티브 정류회로(7)를 연결하고 상기 네가티브정류회로(7)에 특정주파수검출비교기(8)를 연결하고 상기 중간주파회로(5)에 비교기(10)를 연결하고 상기 비교RL(10)와 특정주파수 검출비교기(8)에 MPU(9)를 연결하고 상기 중간주파회로(5)와 MPU(9)에 데이타 필터(11)를 연결하고 상기 MPU(9)에 변조회로(12)를 연결하고 상기 변조회로(12)에 송신 전압제어발진기(13)를 연결하고 상기 MPU(9)와 송신전압제어 발진기(13)에 PLL(Phase Looked Loop)(15)를 연결하고 상기 혼합기(3)와 PLL(15)에 수신전압제어 발진기(16)를 연결하고 상기 송신 전압젱어발진기(13)와 듀플렉서(1)에서 무선주파증폭기(14)를 연결하여 구성한다.In the locking apparatus of the common frequency type wireless telephone according to the present invention, as shown in FIG. 1, the radio frequency amplifier 2 is connected to the duplexer 1 connected to the transmitting and receiving antenna, and the mixer 3 is connected to the radio frequency amplifier 2. ) And the intermediate frequency amplifier circuit 4 to the mixer 3, the intermediate frequency circuit 5 to the intermediate frequency amplifier circuit 4, and the specific frequency (HMCT) to the intermediate frequency circuit 5 ) A band pass filter 6 is connected, a negative rectifier circuit 7 is connected to the specific frequency band pass filter 6, a specific frequency detection comparator 8 is connected to the negative rectifier circuit 7, and the intermediate frequency is connected. A comparator 10 is connected to the circuit 5, and an MPU 9 is connected to the comparison RL 10 and a specific frequency detection comparator 8, and a data filter is connected to the intermediate frequency circuit 5 and the MPU 9. 11) and the modulation circuit 12 to the MPU 9 and before transmission to the modulation circuit 12 A pressure controlled oscillator 13 is connected, a PLL (Phase Looked Loop) 15 is connected to the MPU 9 and a transmit voltage controlled oscillator 13, and a received voltage controlled oscillator is connected to the mixer 3 and the PLL 15. (16) and the transmission voltage amplifier oscillator 13 and the duplexer (1) in the radio frequency amplifier (14) by connecting.

주파수공용방식 무선전화기(Cordless Phone)에서 휴대장치와 고정장치간에 통화를 시도하기 위해 먼저 휴대정치가 고정장치로 통신을 하기 위해 송신하는 경우를 살펴보면 다음과 같다.In order to attempt a call between a portable device and a fixed device in a frequency common type cordless phone, the mobile politics first transmits to communicate with the fixed device as follows.

휴대장치의 MPU(9)에서 빈채널을 선택하여 데이타를 PLL(15)에 쓰고 송신 전원을 인가하면 PLL(15)의 송신부분이 동작한다. 이때 채널 데이타의 정보에 의해 PLL(15)의 기준 주파수의 분주비가 결정되고 송신 전압제어발진기(13)에 여기되어 자주 발진된 출력을 PLL(15)에 인가한다. 상기 PLL(15)의 기준주파수(10.240MHz)와 위상비교하여 출력된 위상차는 저역필터를 거쳐 다시 송신전압제어발진기(13)에 인가되어 주파수 변환하여 채널 주파수를 세팅한다. 상기 MPU(9)에서 송신 데이타와 특정주파수를 발생시키고 상기 송신데이타와 특정주파수는 상기 세팅된 채널주파수를 통해 변조회로(12)에서 변조되어 무선주파증폭기(14)를 통해 안테나에 급전되어 고정장치로 송신된다.When the free channel is selected by the MPU 9 of the portable device and data is written to the PLL 15, the transmission power of the PLL 15 is operated. At this time, the frequency division ratio of the reference frequency of the PLL 15 is determined by the information of the channel data, and is excited by the transmission voltage controlled oscillator 13 to apply the frequently oscillated output to the PLL 15. The phase difference output in phase comparison with the reference frequency (10.240 MHz) of the PLL 15 is applied to the transmission voltage controlled oscillator 13 again through a low pass filter to perform frequency conversion to set the channel frequency. The MPU 9 generates transmission data and a specific frequency, and the transmission data and the specific frequency are modulated by the modulation circuit 12 through the set channel frequency and fed to the antenna through the radio frequency amplifier 14 to fix the device. Is sent.

휴대장치가 고정장치로 통신을 시도하기 위해 상기와 같이 휴대장치가 송신한 데이타와 특정주파수가 실린 무선주파신호를 고정장치가 수신하는 경우를 살펴보면 다음과 같다.In the case where the portable device receives a radio frequency signal carrying data transmitted by the mobile device and a specific frequency as described above, the portable device attempts to communicate with the fixed device.

고정장치의 안테나에서 수신된 무선주파 수신신호는 듀플렉서(1)를 거쳐 무선주파 증폭기(2)를 통해 저잡음이 증폭된 후 혼합기(3)에 인가된다. 혼합기(3)에서는 상기 PLL(15)에 의해 고정된 1차 로컬(local) 주파수와 안테나로부터 인입된 수신신호가 혼합되어 10.695MHz의 1차 중간 주파수를 출력시키고 상기 1차 중간주파수가 다시 10.7MHz 필터를 거쳐 상기 PLL(15)의 기준주파수(10.240MHz)와 혼합되어 2차 중간주파수(455KHz)를 출력시킨다. 중간주파증폭회로(4)는 상기 입력된 2차 중간주파수(455KHz) 신호를 증폭하고 중간주파회로(5)에 입력시켜 검파된 신호를 출력하도록 한다. 상기 검파된 출력신호는 데이타 필터(11)에 입력되어 데이타만이 분리 검출되어 MPU(9)에 입력되로 읽혀진다.The radio frequency reception signal received from the antenna of the fixed device is applied to the mixer 3 after the low noise is amplified by the radio frequency amplifier 2 via the duplexer 1. In the mixer 3, the primary local frequency fixed by the PLL 15 and the received signal from the antenna are mixed to output a primary intermediate frequency of 10.695 MHz, and the primary intermediate frequency is again 10.7 MHz. The filter is mixed with a reference frequency (10.240 MHz) of the PLL 15 to output a second intermediate frequency (455 KHz). The intermediate frequency amplifier circuit 4 amplifies the input second intermediate frequency (455 KHz) signal and inputs the intermediate frequency circuit 5 to output the detected signal. The detected output signal is input to the data filter 11 so that only data is detected separately and read into the MPU 9.

상기 중간주파회로(5)에서 데이타를 포함하여 검파된 출력신호는 상기 비교기(10)에 입력시켜 채널을 스캔한 후 MPU(9)로 입력시킨다. 또한 상기 중간주파회로(5)에서 데이타를 포함하여 검파된 출력신호는 특정주파수 대역통과필터(6)를 통해 특정주파수대역의 신호만이 통과되고, 인접채널이 낮은 주파수를 갖는 점을 감안하여 네가티브정류회로(7)를 통해 그라운드(Ground)를 중심으로 하여 네가티브 부분이 정류되어 특정주파수 검출시 문제될 수 있는 인접채널이 검출을 방지한다. 상기 네가티브 정류회로를 통과한 신호는 특정주파수만이 검출되어 MPU(9)로 들어간다.The output signal detected by the intermediate frequency circuit 5 including data is input to the comparator 10 to scan a channel and then input to the MPU 9. In addition, the output signal detected by including the data in the intermediate frequency circuit (5) is passed through the specific frequency bandpass filter (6) only the signal of a specific frequency band is passed, considering that the adjacent channel has a low frequency negative The rectifying circuit 7 rectifies the negative portion around the ground to prevent the adjacent channel, which may be a problem when detecting a specific frequency. The signal passing through the negative rectifying circuit detects only a specific frequency and enters the MPU 9.

상기 고정장치의 MPU(9)는 휴대장치로부터 특정주파수와 데이타를 수신하여 처리한후 상기 휴대장치로 상기와 같은 송신방법으로 데이타를 전송한다.The MPU 9 of the fixed apparatus receives and processes a specific frequency and data from the portable apparatus, and then transmits the data to the portable apparatus by the above-described transmission method.

제2도는 본 발명에 의한 주파수 공용방식 무선전화기의 록킹방법의 순서를 나타낸 흐름도이다.2 is a flowchart showing the procedure of the locking method of the frequency-sharing radiotelephone according to the present invention.

휴대장치와 고정장치간에 통화를 시도하기 위해서는 할당된 채널중 혼신이 없는 빈채널을 선택하여 록킹시키는 방법이 중요하다. 휴대장치와 고정장치는 채널을 스캔하면서 채널상태가 혼신인지 비혼신인지를 검색하는 대기상태(10)에서 휴대장치의 토크 키(talk key)를 눌러 휴대장치가 고정장치로 통신을 시도하면(110) 휴대장치는 스캔을 멈추고 검색된 빈 채널을 통해 특정주파수와 데이타를 동시에 고정장치로 전송한다(120).In order to make a call between a mobile device and a fixed device, it is important to select and lock a free channel among the allocated channels without interference. When the portable device and the fixed device attempt to communicate with the fixed device by pressing a talk key of the portable device in the standby state 10 that scans the channel and detects whether the channel state is interference or non-talk (110). The portable device stops scanning and simultaneously transmits a specific frequency and data to the fixed device through the retrieved empty channel (120).

고정장치는 채널 스캔중 특정주파수와 데이타 검출될 때까지 검색하여(130) 특정주파수가 검출되면 스캔을 멈추고 수신데이타를 200ms 동안 읽고, 수신한 데이타가 일치하는지 검색한다(140). 수신데이타가 일치하지 않으면 특정주파수와 데이타를 검출하는 단계로 되돌아가고 일치하면 고정장치는 확인데이타를 휴대장치로 전송한다(150).The fixed device searches until a specific frequency and data are detected during the channel scan (130). If a specific frequency is detected, the fixed device stops scanning and reads the received data for 200 ms, and searches whether the received data matches (140). If the received data does not match, the process returns to the step of detecting the specific frequency and the data. If the received data does not match, the fixed device transmits the confirmation data to the portable device (150).

휴대장치가 확인데이타를 수신하면(160) 록크되어 통신모드로 넘어가고 타임아웃이 발생할 때까지 수신되지 않으면 처음의 대기 상태로 돌아간다(170). 휴대장치가 토크키를 다시 누르고 통화가 끝났다는 확인 데이타를 고정모드로 송신하면 고정장치는 수신데이타를 수신하고 처음의 대기상태(100)로 돌아간다.When the portable device receives the confirmation data (160), it locks to the communication mode and returns to the initial standby state if it is not received until a timeout occurs (170). When the portable device presses the talk key again and transmits confirmation data that the call is over in the fixed mode, the fixed device receives the received data and returns to the initial standby state 100.

고정장치가 휴대장치로 통신을 시도하는 경우도 상기 과정을 반복하여 처리하면 된다.When the fixed device attempts to communicate with the portable device, the above process may be repeated.

상기와 같이 구성되어 작동하는 본 발명은 실제통화를 시도한 채널이 아닌 인접채널에서의 특정주파수 검출문제를 네가티브 정류회로를 사용하여 보완하고 반송파 인지에 대한 록킹방법에 사용시 제기되는 록킹시간 지연 및 록킹되지 않는 문제를 특정주파수와 데이타를 동시에 전송하여 검출하므로써 해결하여 주파수 공용방식 무전기 및, 멀티채널(Multi-Channel)을 사용하는 통신제품에 적용할 수 있다.The present invention constructed and operated as described above compensates for a problem of detecting a specific frequency in an adjacent channel instead of a channel to which an actual call is attempted by using a negative rectifier circuit and does not lock time delay and locking when used in a locking method for carrier recognition. The problem that is not solved by transmitting a specific frequency and data at the same time can be solved, and it can be applied to a radio frequency and a multi-channel communication product.

Claims

A duplex means (1) for transmitting or receiving a specific frequency and data carried on a carrier through an antenna, a first radio frequency amplifying means (2) connected to the duplexer means (1), and a first radio frequency amplifying means (2). The mixing means 3 connected, the intermediate frequency amplifier 4 connected to the mixing means, the intermediate frequency stage 5 connected to the intermediate frequency amplifier 4, the comparison means 10 connected to the intermediate frequency stage 5; MPU (Main) which is connected to the data filter means 11 connected to the intermediate frequency stage 5, the comparison means 10 and the data filter means 11, processes received data and generates transmission data and a specific frequency. Processing unit (9), phase locked loop (PLL) means (15) connected to the MPU (9), modulation means (12) connected to the MPU (9), the modulation means (12) and the PLL (15). Connected transmission voltage controlled oscillation means 13, reception voltage controlled oscillation means 16 connected to the mixing means 3 and the PLL 15, and And a second radio frequency amplifying means 14 connected to the transmission voltage control oscillation means 13 and the duplex means 1, for detecting and processing the interference and non-interference channels for the communication between the portable device and the fixed device. A locking device for a frequency-sharing radiotelephone; A specific frequency bandpass filter means 6 connected to the intermediate frequency stage 5 to pass only a signal of a specific frequency band, the specific frequency bandpass filter means 6 connected to the specific frequency bandpass filter means 6 Negative rectification means (7) for rectifying the negative portion of the detection signal through the; and the negative rectification means 7 and the MPU (9) is connected to detect only a specific frequency in the signal through the negative rectification means (7) And a specific frequency detection comparison means (8) outputted to said MPU (9).

A duplex means (1) for transmitting or receiving a specific frequency and data carried on a carrier through an antenna, a first radio frequency amplifying means (2) connected to the duplex means (1), and a first radio frequency amplifying means (2). The mixing section 3 connected, the intermediate frequency amplification means 4 connected to the mixing means, the intermediate frequency stage 5 connected to the intermediate frequency amplification means 4, and the comparison means 10 connected to the intermediate frequency stage 5. ), The data filter means 11 connected to the intermediate frequency stage 5, the specific frequency band call filter means 6 connected to the intermediate frequency stage 5 to pass only signals of a specific frequency band, and the specific frequency band. Negative rectifying means (7) connected to the pass filter means (6) to rectify the negative portion of the detected signal through the specific frequency band pass filter means (6), the negative rectifying means (7) connected to the negative rectifying means Special in signal through 7 It is connected to the specific frequency detection comparison means 8, the comparison means 10, the specific frequency detection comparison means 8, and the data filter means 11 for detecting and outputting only the frequency to process received data, and transmit data and specific frequency. Is generated when the main processing unit (MPU) (9), phase locked loop (PLL) means (15) connected to the MPU (9), modulation means (12) connected to the MPU (9), the modulation means 12 ) And a transmission voltage controlled oscillation means 13 connected to the PLL 15, a reception voltage controlled oscillation means 16 connected to the mixing means 3 and the PLL means 15, and the oscillation voltage controlled oscillation means 13 And a second radio frequency amplifying means (14) connected to the duplex means (1), the locking method for a radio frequency telephone system for detecting and processing a crosstalk and a non-interference channel for communication between a portable device and a fixed device. To; A first step of scanning a channel to search for interference or non-communication conditions; a second step of transmitting, by the portable device, a specific frequency and data to the fixed device in order to attempt communication with the fixed device; A third step of detecting the specific frequency and the data until the matched data is matched, a fourth step of sending the confirmation data to the portable device by the fixed device, and the portable device receiving the confirmation data within a predetermined time. A locking method, characterized in that performed by the fifth step to enter the communication mode.