KR940008111B1 - Cordless switching system - Google Patents

Abstract

The automatic talking and automatic standby converting system includes: a portable unit having a first charge sensing circuit for sensing a charge terminal voltage, a first microprocessor for sensing a sensing signal received from the first charge sensing circuit, an output signal of a first receiving data waveform shaper and talking and standby button operation signals and controlling a first phase fixing loop and a first transmitting amplifier; and a base unit having a second charge sensing circuit for sensing a charge terminal voltage, a second microprocessor for sensing a sensing signal received from the second charge sensing circuit and output signals of a bell signal receiver and a second receiving data waveform shaper and controlling a second phase fixing loop, a second transmitting amplifier, a dial circuit and a transmitting data transmitter, thereby preventing conversion to a talking state by mistake.

Description

Wireless Call and Auto Call Standby Switching System

1 is a block diagram showing the overall configuration of a cordless portable telephone unit according to the present invention.

Figure 2 is a block diagram of the overall configuration of the cordless telephone set fixing unit according to the present invention.

3 is a detailed view of a control unit of the automatic call and automatic call standby function circuit of the present invention of FIG.

4 is a detailed view of the control part of the automatic call and automatic call waiting function circuit of the present invention of FIG.

Figure 5 is an automatic call data input and output waveform diagram when charging in the present invention.

Figure 6 is an automatic call data input and output waveform diagram after receiving the bell in the present invention.

(A) and (b) of FIG. 7 are flowcharts showing the automatic call and automatic call waiting switching process of the present invention.

* Explanation of symbols for main parts of the drawings

1: high-frequency amplification and intermediate frequency amplification and detection unit 2: hydration power amplifier

3: Receive data waveform shaping section 4: Phase locked loop (P.L.L)

5: high frequency amplification and modulation section 6: transmission amplifier

7: microprocessor 8: keyboard portion

9 reset circuit portion 10 charge detection circuit portion

11: transmission data transmission unit 12: telephone pole control unit

13: intermediate frequency amplification and detection unit 14: high frequency amplification and conversion unit

15: Phase fix loop (P.L.L) 16: Receive data waveform shaping unit

17: call amplifier 18: high frequency amplifier and modulator

19: Transmission data sending section 20: Power supply circuit section

21 microprocessor 22 bell receiver circuit

23: charge detection circuit portion 24: dial circuit portion

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an auto-talk and auto-stand by switch system in a MCA codeless telephone, and more particularly, to a portable device when making or receiving a call during charging. The present invention relates to an automatic call waiting mode and an automatic call waiting switching system, which is a system in which a user can make a call immediately without operating any switch button and automatically switches to a call waiting state when the user does not dial in a certain time.

Conventionally, when making a call or receiving a call, the user must pick up a mobile device and operate an arbitrary switch button to switch to a call state. The inconvenience of being in a busy state occurs, which causes not only a lot of side effects and malfunctions in the telephone exchange, but also the user himself.

The present invention has been proposed to solve such a problem of the prior art, and aims to correct a transition to a call state due to an automatic call and carelessness in a frequency common codeless telephone.

DETAILED DESCRIPTION OF THE INVENTION The present invention for achieving this object will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the portable device according to the present invention drives the handset through the high frequency amplification and the intermediate frequency amplification and detection unit 1 and the hydration power amplifier 2, and the high frequency amplification and the intermediate frequency amplification and detection. Receiving data waveform shaping section 3 for inputting the output of section 1 to the microprocessor 7 and a channel output from the microprocessor 7, receiving a call from the transmission data sending section 11, A phase-locked loop (4) for outputting data corresponding to the standby button, a song amplifier (6) for amplifying a voice audio signal through a transmitter and outputting the same to a high frequency amplification and modulation unit (5); In a portable device equipped with a high frequency amplification and modulator (5) for outputting the audio audio signal amplified in (6) to the antenna, the corresponding sensing signal is input to the microprocessor (7) by sensing the voltage of the charging terminal (+). Letting The phase lock loop 4 recognizes a sensing signal input from the front sensing circuit unit 10 and the charging sensing circuit unit 10, an output signal of the received data waveform shaping unit 3, and a call and standby button operation signal. And a microprocessor (7) for controlling the operations of the talk amplifier (6) and the transmission data transmitter (11).

In FIG. 1, 8 is a keyboard part and 9 is a reset circuit part.

As shown in FIG. 2, the fixing device according to the present invention amplifies and converts a signal received by an antenna and applies a high frequency amplification and conversion unit to the telephone line controller 12 through an intermediate frequency amplification and detection unit 13. 14, a phase locked loop 15 for fixing a channel corresponding to a high frequency signal transmitted from the portable device by the high frequency amplifying and converting unit 14, and an output of the intermediate frequency amplifying and detecting unit 13; To amplify the received data waveform shaping unit 16 for inputting the waveform to the microprocessor 21 and the audio / audio signal through the telephone line control unit 12 and outputting the amplification and output to the high frequency amplifying and converting unit 18. In a fixed device having a unit 17 and a high frequency amplification and modulator 18 for outputting the audio audio signal amplified by the talk amplifier 17 to an antenna, the charging terminal (+) (-) voltage is sensed. To detect the corresponding signal A charge sensing circuit unit 23 input to the parser 21, a sensing signal input from the charge sensing circuit unit 23, an output signal of the bell signal receiver 22, and an output signal of the received data waveform shaping unit 16; The fixed device includes a microprocessor 21 which recognizes and controls the operations of the phase-locked loop 15, the transmission amplifier 17, the dial circuit 24, and the transmission data transmitter 19.

In FIG. 2, reference numeral 20 denotes a telephone circuit part.

Effects of the present invention configured as described above are as follows.

1 is a schematic diagram of the overall configuration of a portable device of a wireless telephone. When the call waiting button is " ON ", a " LOW " signal is input to the microprocessor 7, so that the microprocessor 7 receives this signal. It recognizes and controls to call mode (TALK MODE).

That is, the microprocessor 7 receives the low signal and sends an arbitrary channel value to the phase locked loop 4, and also outputs the data corresponding to the torque through the transmission data transmitting unit 11 and generates a voice. The audio signal is transmitted through the antenna ANT through the call amplifier 6 and the high frequency amplification and modulation unit 5.

In the fixing unit of FIG. 2, the high frequency signal received by the antenna is input to the high frequency amplifying and converting unit 14, and the phase fixing loop 15 fixes to any channel transmitted from the portable apparatus.

On the other hand, the received data pulses and audio signals are output through the intermediate frequency amplification and detector 13 and the audio signals and data pulses.

The data pulse is input to the microprocessor 21 through the reception data waveform shaping unit 16, and the microprocessor unit 21 analyzes the data and converts the data into the call mode according to the value.

The microprocessor 21 sends an output signal to the telephone line controller 12 to enable a call between the telephone line and the portable device.

The audio / audio signal is output from the intermediate frequency amplifier and detector 13 and sent to the telephone line via the telephone line controller 12.

The audio signal inputted to the telephone line is transmitted to the antenna through the high frequency amplifier and modulator 18 via the telephone line control unit 12 and the talk amplifier 17.

The response path of the portable device also operates in the same way as the response path of the fixed device.

In addition, when a call is received from the outside, a bell signal is detected from the telephone line through logic through the bell receiving circuit unit 22.

The signal detected by this logic detects the ringing by the microprocessor 21 and transmits the bell signal to the portable device through the transmission data transmitter 19 and the antenna.

At this time, the portable device transmits and receives data by fixing the same channel as the fixed device.

FIG. 3 is a detailed circuit diagram showing the control circuit of the auto talk function circuit and the auto call standby switching function circuit during charging of the portable unit shown in FIG. 1.

The function is operated when the portable device and the fixed device are separated from the charging state.

When charging, the power B + is applied to the charging terminal of FIG. 4 through the resistor R12. The power supply B + is applied to the charging terminal of FIG. 3 and charged with 3.6 volts of the charging battery through the diode D1. A bias voltage is applied to the base of the transistor Q1 via R3 and resistor R4 to bring the terminal Ao voltage of the microprocessor 7 into a "0" volt state (that is, "LOW") (normally 5V). (See Fig. 5 (a)).

The microprocessor 7 senses the terminal Ao voltage and recognizes the state of charge if it is "LOW".

At the same time, in FIG. 4, the power supply B + passes through the charging terminal through the resistor R12 and supplies a bias voltage to the base of the transistor Q2 through the resistor R11 to conduct the transistor Q2 to conduct the microprocessor 21. ), Make terminal (Ao) voltage "0" volt state (see Fig. 5 (a)).

In this way, both the portable device and the fixed device are charged at the same time.

Here, the resistors R4, R10, and capacitors C1, C4 are used to prevent chattering of the charging terminals.

When the portable device and the fixed device are charged at the same time, the charging data is first transmitted from the fixed device to the portable device.

That is, the charging data is sent to the terminal A1 of the microprocessor 21 of FIG. 4 (see FIG. 5C), the resistor R7 (R8), the capacitor C3, and the high frequency amplification of FIG. Passed through the modulator 18 is sent to the antenna.

The portable device receives the data signal through an antenna and inputs data to the terminal A2 of the microprocessor 7 of FIG. 3 via the received data waveform shaping circuit 3 through the high frequency amplification and detection unit 1.

The microprocessor 7 receives the signal and transmits the charging data to the terminal A1 of the microprocessor 7 as shown in FIG. 5 (b), through the resistors R5 and R6 and the capacitor C2. And transmits to the antenna via the modulator 5.

The charging data received by the antenna from the fixed device is passed through the high frequency amplification and conversion unit 14, through the intermediate frequency amplification and detection unit 13, and through the receiving data waveform shaping unit 16, to the terminals of the microprocessor 21 ( The charging data is inputted to A3) (see FIG. 5 (d)).

The microprocessor 21 checks the data value and then sends the corresponding confirmation data to the terminal A1.

Then, the portable device checks the received confirmation data, and then the portable device and the fixed device are simultaneously charged.

In this state, the portable device and the fixed device are separated, that is, the automatic call mode is switched, and the microprocessors 7 and 21 operate in two paths.

That is, Fig. 7A shows a flow chart of the control operation of the microprocessor 21 in the fixed device, and (b) shows the flow chart of the control operation of the microprocessor 7 in the portable device.

5 is a waveform diagram of an automatic call data transmission signal during charging, in which (a) shows the input state of the terminal Ao of the microprocessor 7 of the portable device and the terminal Ao of the microprocessor 21 of the fixed device. (B) shows the output state of the terminal A1 of the microprocessor 7, (c) shows the output state of the terminal A1 of the microprocessor 21, and (d) The output state of the terminal A3 of the microprocessor 21 is shown, respectively.

6 is a waveform diagram of an automatic call data transmission signal after receiving a bell, and (a) shows a terminal Ao input state of the microprocessor 7 of the portable apparatus and a terminal Ao input of the microprocessor 21 of the fixed apparatus. (B) shows the input terminal A4 of the microprocessor 21, (c) shows the output state of the terminal A1 of the microprocessor 21 and the terminal ( A2) shows the input state, (d) shows the output state of the terminal A1 of the microprocessor 7 and the input state of the terminal A2 of the microprocessor 21, and (e) shows the microprocessor 21. Each output of terminal A3 is shown.

As described above, the present invention is a function for automatically talking and automatically switching to call waiting in a MCA cordless telephone in a state of charge, and preventing a call from being inadvertently switched to a call state. Of course, there is an advantage that can solve the uncomfortable problem of long time when switching to the call state.

Claims (1)

The receiver is driven through a high frequency amplification and an intermediate frequency amplification and detection unit 1 and a hydration power amplification unit 2, and the output of the high frequency amplification and frequency amplification detection unit 1 is waveform-formed to the microprocessor 7. A phase locked loop 4 for receiving the received data waveform shaping unit 3, the channel output from the microprocessor 7, and outputting data corresponding to a call or standby button from the transmission data sending unit 11; Amplifying the audio signal through the transmitter, and outputting it to the high frequency amplification and modulator 5, and a high frequency amplification for outputting the amplified voice audio signal to the antenna. And a high frequency amplifying and converting unit for amplifying and converting a signal received by an antenna and applying it to the telephone line controller 12 through an intermediate frequency amplifier and a detector 13. 14) with, award A phase processor loop 15 for fixing a channel corresponding to a high frequency signal transmitted from the portable device by the high frequency amplification and converting unit 14, and the output of the intermediate frequency amplifier and the detector 13 are subjected to waveform shaping. A reception data waveform shaping unit 16 to be input to the 21, a talk amplifier 17 for amplifying a voice audio signal through the telephone line control unit 12 and outputting it to the high frequency amplification and conversion unit 18; In a radiotelephone comprising a fixed device having a high frequency amplification and modulator 18 for outputting a voice audio signal amplified by the talk amplifier 17 to the antenna, the portable device is provided with a charging terminal (+) voltage. A charge sensing circuit unit 10 for sensing and inputting a corresponding sensing signal to the microprocessor 7, a sensing signal input from the charging sensing circuit unit 10, an output signal and a call of the received data waveform shaping unit 3, versus And a microprocessor (7) for controlling the operation of the phase fixing loop (4), the transmitting amplifier (6) and the transmitting data transmitting unit (11) by recognizing a button operation signal. Charge sensing circuit unit 23 for sensing a positive voltage and inputting a corresponding detection signal to the microprocessor 21, and a sensing signal and a bell signal receiving unit 22 input from the charging sensing circuit unit 23. Recognizing the output signal and the output signal of the received data waveform shaping section 16 to control the operation of the phase locked loop 15, the talk amplifier 17, the dial circuit 24 and the transmission data sending section 19 The automatic call and the automatic call standby switching system of a wireless telephone, characterized in that it comprises a microprocessor (21).