KR19990047514A - Infrared mute device and method for radiotelephone - Google Patents

Abstract

Conventionally, in order to mute an electronic product for a call, a user needs to directly operate a remote controller or a key panel.

Accordingly, the present invention provides a key for requesting a call and mute at the same time, a control unit for outputting a signal for muting when the key data is detected by pressing the key, and data for converting the signal for muting to digital data. A processing unit, a pulse width modulation signal generation unit for generating a pulse signal obtained by pulse-width modulating the digital data, and an infrared diode for generating an infrared signal that is turned on or off by the pulse signal and whose period is determined by the pulse signal width. The present invention has implemented an infrared mute device and method for a wireless telephone, which generates an infrared signal for requesting mute when a call request is detected while the mute mode is set.

Therefore, the user can mute the sound without taking a separate action when making a phone call, thereby providing more convenience to the user.

Description

Infrared mute device and method for radiotelephone

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless telephone, and more particularly, to an apparatus and method for muting sound using an infrared signal before a telephone call through the wireless telephone.

In general, the volume of a television, a radio, an audio, etc. may be adjusted using a volume control key installed in a key panel or a volume control key of a remote control. Therefore, when a call comes in or wants to make a call while using a TV, radio, or audio, the user has to mute the sound using a key panel or a remote controller and then make a phone call. In this case, the remote controller used is a method of controlling electronic products and the like at a long distance by using infrared communication. The infrared communication refers to a pulse width modulation (PWM) method for converting a signal to be transmitted, and then transmits an infrared signal generated by the pulse, and receives the transmitted infrared signal. Means a communication method that converts the pulse generated by the received infrared signal to the original signal.

A transmitter 100 of a remote controller and a receiver 110 of an electronic product for performing a conventional infrared communication are as shown in FIG. The transmitter 100 shown in FIG. 1 includes an infrared diode D1, a controller 1 102 and a keypad 101, and the receiver 110 includes an infrared diode D2, a controller 2 111, and a volume control unit. 112).

Briefly describing the operation of the infrared transceiver having the above configuration, a signal generated by the user operating the keypad 101 is input to the controller 1 (102). The controller 1 102 converts the input signal into a pulse signal and applies the control signal to control the on / off of D1. As the D1 is turned on / off by the control signal (pulse signal), an infrared signal is generated and transmitted. The D2 provided in the receiving device 110 is turned on / off by the transmitted infrared signal to generate a pulse signal. The pulse signal is applied to the controller 2 111, and the applied pulse signal is converted into a volume control signal by the controller 2 111 and applied to the volume control unit 112. According to the applied volume control signal, the volume control unit 112 adjusts the volume to the required level. In the above, the operation of adjusting the volume of the electronic product using the infrared communication is mentioned, but the operation of controlling all functions of the electronic product is the same, and thus other control operations are omitted.

As described above, in order to answer a call or make a call while watching or listening to an electronic product that outputs a voice such as a television, a radio, or an audio, a user directly adjusts the volume or mutes the sound using a key panel or a remote controller. There was an inconvenience to do a separate operation.

Accordingly, an object of the present invention for solving the above problems is to provide a wireless telephone that generates an infrared signal for muting when a specific key is pressed for a voice call.

Another object of the present invention is to provide a method of muting an electronic product before making a voice call using a wireless telephone.

1 is a block diagram of a conventional infrared transceiver.

2 is a conceptual diagram according to an embodiment of the present invention.

Figure 3 is a block diagram of an infrared mute device of a wireless telephone according to an embodiment of the present invention.

4 is a control flowchart for generating a mute infrared signal in a wireless telephone according to an embodiment of the present invention.

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

A schematic connection relationship between the portable device 200, the fixing device 210, and the electronic product 220 of a wireless telephone according to an embodiment of the present invention is illustrated in FIG. 2. The portable apparatus 200 and the fixing apparatus 210 form a specific channel to perform wireless communication 240, and the portable apparatus 200 and the electronic product 220 are provided with a transmitter 201 and a receiver 221, respectively. Infrared communication 230 is performed. The receiver 221 uses a device provided to receive an infrared signal from the electronic product 220 using a remote controller.

The detailed configuration of the portable apparatus 200 shown in FIG. 2 according to an embodiment of the present invention has the configuration as shown in FIG. 3.

Referring to FIG. 2, the configuration of the portable apparatus 200 according to an embodiment of the present invention is described. The controller 300 controls the overall operation of the portable apparatus 200. The memory 302 may be composed of an EEPROM and a RAM. The EEPROM stores programs and initial service data, and the RAM may temporarily store data generated during operation of the portable apparatus 200. The key input unit 306 generates key data for performing various modes and dialing services provided by the portable apparatus 200 according to a user's operation and provides the generated key data to the controller 300. The display unit 308 displays the current operating state of the portable apparatus 200 under the control of the controller 300. The logic unit 304 transmits / receives data for controlling the operations of the controller 300 and the portable apparatus 200. In addition, the control data for the operation control of each component constituting the portable device 200 is output. The data processor 310 performs data communication with the controller 300. In addition, the data processor 310 signals received data output from the RF receiver 314 to the controller 300, and processes the transmitted data output from the controller 300 to signal the RF transmitter 316. Will output The duplexer 324 is connected to an antenna to separate a transmission RF signal and a reception RF signal. The RF receiver 314 is connected to the duplexer 324 and frequency-converts and demodulates the received RF signal. In addition, the received audio signal output from the RF receiver 314 is applied to the audio receiver 318, the received data is applied to the data processor 310. The audio receiver 318 converts an electrical audio signal applied from the RF receiver 314 into an audible sound and outputs the audible sound. The RF transmitter 316 modulates the transmission data provided from the data processor 310 and the transmission audio signal provided from the audio transmitter 320 into a transmission form and outputs the same to the duplexer 324. The frequency synthesizer 322 generates a frequency synthesized signal for allocating a reception channel of the RF receiver 314 and a transmission channel of the RF transmitter 316 by the control data of the logic unit 304. The PWM signal generator 312 converts the digital data provided from the data processor 310 into a PWM signal and outputs the PWM signal. The infrared diode D3 is turned on / off by the PWM signal to generate an infrared signal.

3 is a control flowchart illustrating a process of automatically muting an electronic product when starting a phone call according to an embodiment of the present invention.

Hereinafter, a preferred embodiment according to the present invention will be described in detail according to the control flowchart of FIG. 4 with reference to the above-described configuration.

Typically, in order to answer or make a call using the mobile device 200 of the wireless telephone, the mobile device 200 may be detached from the charger or a call key (when there is an incoming call, no matter what key on the keypad is pressed) If possible, the call is connected by pressing all keys on the keypad). First of all, the present invention can be applied to a case where a user makes a call or wants to make a call while watching or listening to a TV, radio, audio, or the like. Reveal in advance. This is because the operation for establishing a channel is the same as the operation for receiving a call when the user wants to make a call, and the subsequent processes performed by the operation are the same.

First, in step 410 of FIG. 4, the control unit 300 detects whether data informing of ring arrival from the fixing device 210 is received through the duplexer 324 and the RF receiver 314. In step 410, if data indicating ring arrival is detected, the controller 300 proceeds to step 412. In step 412, the controller 300 generates a ring tone notifying the user that a call has been received, and detects whether the user has a response in step 414. The response is made through the input of key data by the portable device 200 being separated from the charger or by pressing a specific key provided in the key input unit 306 as described above. When the response is detected, the control unit 300 proceeds to step 416 to block the ringing that is occurring and determines whether the mute mode is set by the user in step 418. The mute mode is a mode set by a user's function key operation. The mute mode is automatically set when a phone call is to be muted. Since the setting of the mute mode is different from only the keys used, the setting of the mute mode is generally the same as that of setting the function mode provided by the portable apparatus 300, which will not be described in detail.

If it is determined in step 418 that the mute mode is set, the control unit 300 proceeds to step 420. Otherwise, if it is determined that the mute mode is not set, the control unit 300 proceeds to step 422 and performs it normally. Perform a call mode.

The control unit 300 generates a mute signal when the process proceeds to step 420. The operation of generating the mute signal will be described in detail as follows.

The controller 300 inputs a signal for muting to the data processor 310, and the data processor 310 converts the input signal into digital data and applies the signal to the PWM signal generator 312. The PWM signal generator 312 generates a pulse obtained by pulse-width modulating the applied digital data, and the on / off period of D3 is determined by the width of the pulse. As D3 is turned on / off at a cycle determined by the pulse width, an infrared signal having the cycle is generated.

The D1 is turned on when the pulse signal is at the low level, and turned off when the pulse signal is at the high level. In this case, the pulse signal generated by the PWM signal generator 312 uses the same signal as the pulse signal used in a conventional remote controller for controlling electronic products.

The infrared signal generated by the portable device 200 is received through the receiver 221 provided in the electronic product 220. The receiver 221 generates a pulse signal by the presence or absence of the infrared signal. The generated pulse signal is applied to a control unit (not shown) of the electronic product 220 as the same pulse signal generated by the PWM signal generator 312 and used as a mute signal.

As described above, when the telephone is called or when the user wants to make a telephone call while watching TV, the user can perform a separate operation by using the portable device of the wireless telephone to mute the sound of the television, radio, and audio. There is an effect that provides the convenience of muting without a sound.

Claims (3)

In a portable device of a wireless telephone for adjusting the volume of a device using a remote controller, A key that calls and mutes simultaneously, A control unit which outputs a signal requesting muting when key data is detected by pressing the key; A data processing unit for converting the signal requiring muting into digital data; A pulse width modulated signal generator for generating a pulse signal obtained by pulse width modulating the digital data; And an infrared diode which is turned on or off by the pulse signal and generates an infrared signal whose period is determined by the pulse signal width. In the portable device of the wireless telephone, a method of muting the electronic products using infrared rays, When the call request is detected in the mute mode is set, the infrared mute method of the wireless telephone, characterized in that for generating a mute request for mute. In the portable device of the wireless telephone, a method of muting the electronic products using infrared rays, Generating ring tones by ringing and detecting a call request; Determining whether a mute mode is set after cutting off the ringing sound when the call request is detected; If it is determined that the mute mode is set, generating a signal requesting mute; Converting the signal requiring the mute into digital data; Generating a pulse signal by pulse width modulating the digital data; Generating an infrared signal having a period determined by the width of the pulse signal; And the mute mode is not set or the call mode is performed after the infrared signal is generated.