KR100382197B1 - Ratio picture speeching and TV receiving circuit in wire/wireless telephone - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless video call and TV receiving apparatus of a wired / wireless telephone which enables a video call wirelessly through a portable device and enables the reception of a TV.

To this end, the present invention includes a tuner capable of receiving a TV on a fixed device of a wired / wireless telephone, and a transmitter capable of transmitting a voice and video during a video call, a video and an audio when receiving a TV as a 2.4 GHz radio signal, and a 2.4 GHz mobile device. By providing a tuner for tuning a radio signal and a TFT LCD capable of displaying an image, a video call can be wirelessly performed in a portable device of a wired / wireless telephone and a TV reception can be provided.

Description

Wireless video call and TV receiver for wired and wireless telephones {Ratio picture speeching and TV receiving circuit in wire / wireless telephone}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless video call and a TV (TV) receiving apparatus of a wired / wireless telephone. In particular, a wireless video call of a wired / wireless telephone which enables a video call wirelessly through a portable device and enables the reception of a TV is possible. And a TV receiving device.

In general, a wired or wireless telephone is composed of a fixed device connected to a trunk line and a wire, and a portable device for wirelessly communicating with the fixed device.

In the case of a call using a fixed device, a telephone number or the like is input by manipulating a key pad provided at a predetermined position of the fixed device, and when an incoming call is made, a call is made with the other party through a handset.

In addition, when making a call using a mobile device, when a phone number is input by operating a keypad provided at a predetermined position of the mobile device, it is wirelessly transmitted to the fixed device, and the phone number is transferred from the fixed device to the fixed line by wire. When the incoming call is made, the portable device makes a call with the other party wirelessly through the fixed device.

On the other hand, when making a video call using a conventional wired or wireless telephone, the fixing device is provided with a device capable of processing voice and video, and a TFT LCD, the video call with the other party only through the fixing device.

Since the fixing device must be connected to the trunk line by wire, there is a limitation in distance, and there is a lack of mobility because it is fixed at an arbitrary position.

Nevertheless, since it is impossible to make a video call with the other party using a portable device which is a part of the conventional wired or wireless telephone, there is an inconvenience in that a fixed device must be used for the video call.

In addition, the conventional wired and wireless telephones also had a disadvantage that it is impossible to watch TV.

Accordingly, the present invention has been proposed to solve the above-described problems of the prior art, and wireless video call and TV of a wired / wireless telephone which enables a video call wirelessly through a portable device and enables reception of a TV (TV). It is an object to provide a receiving device.

The present invention for achieving the above object,

In a cordless and cordless telephone consisting of a fixed device and a portable device,

The fixing device,

A buffer for buffering compressed audio and video signals drawn through a tip / ring terminal connected to a trunk line during a video call;

An audio / video compression and decompression unit which decompresses the compressed audio / video signal buffered in the buffer and compresses the transmitted audio / video signal to the buffer;

A digital / analog converter for converting audio and video data output from the audio / video compression and decompression unit into an analog video signal;

A video / audio separation unit for separating audio and video signals converted from the digital / analog converter into analog signals into video and audio;

A signal selector for selecting one of the TV signals received through the RF jack or the first antenna;

A TV tuner for outputting an analog composite video signal and an analog voice signal by tuning the TV signal selected by the signal selector;

A character mixing unit which mixes and outputs characters with the analog composite video signal output from the TV tuner;

Second and third switches for controlling output of video and audio signals respectively output from the text mixing unit and the TV tuner;

One of a video signal switched by the second switch and a video signal output from the video / audio splitter is selected and output, and one of a voice signal switched by the third switch and an audio signal output from the video / audio splitter A video / audio selector for selecting and outputting the selected video signal;

And a transmitter for wirelessly transmitting the video and audio signals respectively selected by the video / audio selector to the portable device through a second antenna.

In addition, the present invention for achieving the above object,

In a cordless and cordless telephone consisting of a fixed device and a portable device,

The portable device,

A central processing unit for analyzing a signal transmitted from the fixed device to determine whether a video call is received or TV reception and controlling a reception mode of the portable device according to the determination result;

A tuner for tuning an wireless signal received through an antenna and outputting an analog video signal and an audio signal;

A first switch for switching the video signal output from the tuner under the control of the CPU;

An RGB decoder configured to decode the video signal through the first switch to generate R, G, and B signals;

A synchronization signal detector for detecting a synchronization signal from the signal output from the RGB decoder;

A timing signal generator for generating a timing signal for displaying an image based on the synchronization signal detected by the synchronization signal detector;

A TFT LCD for displaying on the screen the R, G, and B signals generated by the RGB decoder according to the timing signal generated by the timing signal generator;

A second switch for switching the audio signal output from the tuner under the control of the central processing unit;

An amplifier for amplifying the audio signal through the second switch to a predetermined level;

A speaker for transmitting the audio signal amplified by the amplifier to the outside;

It characterized in that it comprises a booster circuit for supplying the driving power to the TFT LCD by boosting the voltage of the battery or the voltage supplied through the power supply device provided at a predetermined position of the portable device.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram showing the configuration of a wireless video call and TV receiving apparatus of a wired / wireless telephone according to the present invention.

Figure 2 is a block diagram showing the configuration of a wireless video call and TV receiving apparatus of the wired and wireless telephone according to the present invention, a block diagram showing the configuration of a portable device.

* Description of the symbols for the main parts of the drawings *

110 ..... Audio / Video Compression and Decompression

111 ..... Digital / Analog Converter

112 ..... Video / Audio Separators

116 ..... TV Tuner

117 Character Mixing

122 ..... Transmitter

208 ..... Tuner

210 ..... RGB decoder

213 ..... TFT LCD

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

1 is a block diagram showing the configuration of a wireless video call and TV receiving apparatus of a wired / wireless telephone according to the present invention.

Reference numerals 101 and 102 denote a tip / ring terminal connected to a trunk line, and reference numeral 103 denotes a signal for processing a voice signal through the tip / ring terminals 101 and 102 during a voice call. The voice circuit unit 104 denotes a first switch which is turned on only during a voice call and connects the voice signal output from the voice circuit unit 103 to the next stage, and the reference numeral 105 denotes the first switch ( A noise removing unit for removing noise of the voice signal through 104 is indicated, and reference numeral 106 designates a voice signal output from the noise removing unit 105 as an RF signal of 914/926 MHz and is carried through the first antenna 107. Represents an RF unit for transmission to the device. Here, the transmission path during the voice call is made in the reverse order of the above configuration.

Next, reference numeral 108 denotes a central processing unit (CPU) that controls the fixing device appropriately for the mode in voice call, video call, and TV reception, and controls the overall operation of the fixing device, and reference numeral 109 denotes a video call. A buffer for buffering compressed audio and video signals introduced through the tip / ring terminals 101 and 102 connected to the trunk line is shown. Reference numeral 110 denotes a compression of the compressed audio / video signal buffered in the buffer 109. Decompresses, and transmits the audio / video signal to the buffer 109 to decompress and deliver the audio / video signal. Reference numeral 111 denotes audio and video data output from the audio / video compression and decompression unit 110. Denotes a digital / analog converter for converting an analog video signal, and reference numeral 112 denotes an audio and video signal converted by the digital / analog converter 111 into an analog signal. It represents parts of the video / audio separation to separate a video and audio.

Also, reference numeral 115 denotes a signal selector for selecting one of the TV signals received through the RF jack 113 or the second antenna 114, and reference numeral 116 tunes the TV signal selected by the signal selector 115. The TV tuner outputs the analog composite video signal and the analog audio signal. Reference numeral 117 denotes a character mixing unit for mixing and outputting characters to the analog composite video signal output from the TV tuner 116, and reference numerals 118 and 119. Denotes second and third switches for controlling the output of the video and audio signals output from the character mixer 117 and the TV tuner 116, respectively, and reference numeral 120 denotes a switch in the second switch 118. Video selector for selecting and outputting one of the video signal and the video signal output from the video / audio separation unit 112 Reference numeral 121 denotes a video / audio selector for selecting and outputting one of an audio signal switched by the third switch 119 and an audio signal output from the video / audio separator 119, and reference numeral 122 denotes A transmitter for wirelessly transmitting the video and audio signals selected by the video / audio selectors 120 and 121 to the portable device through the third antenna 123, respectively.

The fixing device according to the present invention configured as described above is almost similar to the conventional voice processing method at the time of normal voice reception.

That is, the voice signal introduced through the tip / ring terminals 101 and 102 is processed through the voice circuit unit 103 and then transmitted to the first switch 104. In this case, the center of the voice signal is used during a normal voice call. Under the control of the processing device 108, the first switch 104 is turned on and transmits a voice signal transmitted to the noise removing unit 105.

The noise canceller 105 attenuates the wireless noise of the transmitted voice signal, and then transmits the noise to the RF unit 106, and the RF unit 106 converts the signal into a 914/926 MHz wireless signal to convert the first antenna 107. Send to the mobile device through.

Here, when using the handset provided in the fixing device, the signal output from the noise canceller 105 is directly output to the handset.

In the voice call, the voice signal transmitted from the portable device is processed in the reverse order and is sent out to the trunk line.

Next, an operation of receiving audio and video during a video call will be described.

The audio and video signals received through the tip / ring terminals 101 and 102 are buffered by the buffer 109 and decompressed by the audio / video compression and decompression unit 110 to restore the original signal.

The reconstructed video and audio digital signals are converted into analog video and audio signals by the digital / analog converter 111 and separated into video and audio signals by the video / audio separator 112, respectively, and then the video signals are converted into video selectors. Passed to 120, the audio signal is passed to the audio selector 121.

In this case, the video selector 120 selects a video signal output from the video / audio separation unit 112 and transmits the video signal to the transmitter 122 during a video call under the control of the central processing unit 108. The selector 121 also selects and transmits the audio signal output from the video / audio separation unit 112 to the transmitter 122 during a video call under the control of the central processing unit 108.

The transmitter 122 modulates the transmitted video and audio signals into RF signals of the 2.4 GHz band and transmits them through the third antenna 123. The video and audio signals transmitted to the portable device are transferred to the portable device. The mobile device makes a video call.

Next, an operation of receiving a TV through the portable device will be described.

The TV signal received through the RF jack 113 or the second antenna 114 is transmitted to the signal selector 115, and the signal selector 115 selects one of two input signals and transmits it to the TV tuner 116. do.

The TV tuner 116 tunes the input TV signal, generates an analog composite video signal, inputs it to the character mixer 117, and simultaneously transmits an audio signal to the third switch 119.

The character mixing unit 117 mixes various characters with the transmitted analog composite video signal, and transmits the resulting signal to the second switch 118, and the second switch 118 is the central processing unit 108. Under the control of the TV reception mode, the input video signal is switched and delivered to the video selector 120. In addition, the third switch 119 also switches the input audio signal to the audio selector 121 in the TV reception mode.

At this time, the video selector 120 and the audio selector 121 select video signals and audio signals transmitted from the second and third switches 118 and 119 under the control of the CPU 108. Input to transmitter 122.

The transmitter 122 modulates the input TV signal into an RF signal of a 2.4 GHz band and transmits the TV signal to the portable device through the third antenna 123, thereby receiving the TV signal from the portable device.

In this case, the central processing unit 108 controls the first to third switches 104, 118 and 119 as appropriate to automatically select a mode.

In other words, if a call is received while receiving a TV, it may be automatically switched to a telephone mode through ring detection. Also, by providing text information on the LCD as a text during TV reception, the user may recognize that the call has been received.

2 is a block diagram showing the configuration of a wireless video call and TV receiving apparatus of a wired / wireless telephone according to the present invention.

Here, reference numeral 201 denotes a first antenna for receiving a voice signal during a telephone call, reference numeral 202 denotes an RF unit for processing the RF signal received through the first antenna 201, and reference numeral 203 denotes A central processing unit 203 for controlling the overall operation of the portable device is shown, reference numeral 204 denotes a noise canceling unit for removing high frequency noise of a speech signal processed by the RF unit 202, and reference numeral 205 denotes the central processing unit. A first switch for determining whether to output the voice signal through the noise canceling unit 204 under the control of the device 203 is indicated, and reference numeral 206 denotes a predetermined level of the voice signal through the first switch 205. An amplifier 206 is used to amplify the signal, and reference numeral 207 denotes a receiver 207 for transmitting an audio signal amplified by the amplifier 206 to the outside.

In addition, reference numeral 208 denotes a tuner for outputting an analog video signal and an audio signal by tuning the wireless signal received through the second antenna 207, and reference numeral 209 denotes the tuner under the control of the CPU 203. A second switch for switching the video signal output from the tuner 208, and 210 denotes an RGB decoder for decoding the video signal through the second switch 209 to generate R, G, B signals, Reference numeral 211 denotes a synchronization signal detector for detecting a synchronization signal from the signal output from the RGB decoder 210, and reference 212 denotes a timing for displaying an image based on the synchronization signal detected by the synchronization signal detector 211. A timing signal generator for generating a signal is shown, and reference numeral 213 denotes the RGB decoder 210 according to the timing signal generated by the timing signal generator 212. The generated R, G, B shows the TFT LCD for displaying the signal on a screen.

Also, reference numeral 214 denotes a third switch for switching the audio signal output from the tuner 208 under the control of the central processing unit 203, and reference numeral 215 denotes an audio through the third switch 214. An amplifier for amplifying the signal to a predetermined level is indicated, reference numeral 216 denotes a speaker for transmitting the audio signal amplified by the amplifier 215 to the outside, and reference numeral 217 denotes a battery 217 provided at a predetermined position of the portable device. A boosting circuit for supplying driving power to the TFT LCD 213 by boosting a voltage supplied through a voltage or a power supply device of the present invention.

In the portable device according to the present invention configured as described above, the process of receiving a voice through the fixing device and transmitting the voice to the fixing device in the portable device of the wired / wireless phone is the same as that of the conventional wired / wireless phone. , Description thereof is omitted.

However, during a video call or TV reception, the first switch 205 is turned off.

Next, when a video call or TV reception operation is described, the 2.4 GHz RF signal transmitted from the fixed device is received by the second antenna 2070 and transmitted to the tuner 208, and the tuner 208 performs a tuning operation. To generate analog video signals and audio signals.

The image signal generated by the tuner 208 is transferred to the RGB decoder 210 through the second switch 209, and the RGB decoder 210 generates the R signal, the G signal, and the B signal by decoding the TFT LCD. Forward to (213).

In this case, the synchronization signal detector 211 detects a synchronization signal from signals other than the data decoded by the RGB decoder 210 and transmits the synchronization signal to the timing signal generator 2120, and the timing signal generator 212 transmits the synchronized signal. Generates a timing signal for displaying an image on the screen using the signal as a reference signal and transmits the timing signal to the TFT LCD 213. Accordingly, the TFT LCD 213 responds to the timing signal. The video signal transmitted from is displayed on the screen.

In this case, the TFT LCD 213 is supplied with driving power by the booster circuit 218.

That is, the boosting circuit 218 boosts the power supply VCC supplied through the battery 217 or the power supply device provided at a predetermined position of the portable device to a predetermined level to supply driving power to the TFT LCD 213. do.

Next, the analog voice signal tuned and output by the tuner 208 is transmitted to the amplifier 215 through the third switch 214, and the amplifier 215 amplifies it to a predetermined level through the speaker 216. Since it is transmitted to the outside, it is possible to make a video call from the portable device and to receive a TV.

As described above, the present invention provides an effect in which a video call can be made wirelessly and a TV can be received in a portable device of a wired or wireless telephone.

Claims (2)

In a cordless and cordless telephone consisting of a fixed device and a portable device, The fixing device, A buffer for buffering compressed audio and video signals drawn through a tip / ring terminal connected to a trunk line during a video call; An audio / video compression and decompression unit which decompresses the compressed audio / video signal buffered in the buffer and compresses the transmitted audio / video signal to the buffer; A digital / analog converter for converting audio and video data output from the audio / video compression and decompression unit into an analog video signal; A video / audio separation unit for separating audio and video signals converted from the digital / analog converter into analog signals into video and audio; A signal selector for selecting one of the TV signals received through the RF jack or the first antenna; A TV tuner for outputting an analog composite video signal and an analog voice signal by tuning the TV signal selected by the signal selector; A character mixing unit which mixes and outputs characters with the analog composite video signal output from the TV tuner; Second and third switches for controlling output of video and audio signals respectively output from the text mixing unit and the TV tuner; One of a video signal switched by the second switch and a video signal output from the video / audio splitter is selected and output, and one of a voice signal switched by the third switch and an audio signal output from the video / audio splitter A video / audio selector for selecting and outputting the selected video signal; And a transmitter for wirelessly transmitting the video and audio signals selected by the video / audio selector to the portable device through a second antenna. In a cordless and cordless telephone consisting of a fixed device and a portable device, The portable device, A central processing unit for analyzing a signal transmitted from the fixed device to determine whether a video call is received or TV reception and controlling a reception mode of the portable device according to the determination result; A tuner for tuning an wireless signal received through an antenna and outputting an analog video signal and an audio signal; A first switch for switching the video signal output from the tuner under the control of the CPU; An RGB decoder configured to decode the video signal through the first switch to generate R, G, and B signals; A synchronization signal detector for detecting a synchronization signal from the signal output from the RGB decoder; A timing signal generator for generating a timing signal for displaying an image based on the synchronization signal detected by the synchronization signal detector; A TFT LCD for displaying on the screen the R, G, and B signals generated by the RGB decoder according to the timing signal generated by the timing signal generator; A second switch for switching the audio signal output from the tuner under the control of the central processing unit; An amplifier for amplifying the audio signal through the second switch to a predetermined level; A speaker for transmitting the audio signal amplified by the amplifier to the outside; Wireless video call and TV of a wired / wireless telephone comprising a boosting circuit for boosting a voltage supplied by a battery or a power supply provided at a predetermined position of a portable device to supply driving power to the TFT LCD. Receiver.