KR20030044588A - Wireless Video Phone - Google Patents

Abstract

PURPOSE: A cordless image phone is provided to allow a user to make an image call communication while freely moving within a determined range. CONSTITUTION: An RF unit(21) performs modulation and demodulation for a communication with a fixed device. A logic unit(22) connected to the RF unit compresses and codes an image signal and a voice signal to digital signals or recovers them for transmission and reception. A power supply unit(28) connected to a charging unit of the fixed device supplies power to a wireless terminal(20). A camera unit(23) photographs an image and transfers the image to the logic unit(22). An image display unit(24) outputs an image recovered by the logic unit(22). A key pad unit(25) receives a key value and transfers it to the logic unit(22). A microphone unit(26) receives a voice and transfers it to the logic unit(22). A speaker unit(27) outputs a voice signal processed by the logic unit(22).

Description

Wireless Video Phone {Wireless Video Phone}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless videophone, and more particularly, to an apparatus for enabling a videophone communication using a PSTN network or an IP network to a wireless terminal.

Video telephone communication methods include a method using IMT-2000 (International Mobile Telecommunications-2000), a method using an Internet (IP) network, a method using a public switched telephone network (PSTN) network, and the like.

The IMT-2000 system implements video communication in a high frequency band (2GHz) and a wide bandwidth (2Mb) based on a standard set by the ITU.

However, due to various technical and economic factors, the video call function is not properly provided because it is not being serviced.

Video telephony communication using a wire is divided into a method using an Internet (IP) network and a method using a wired telephone (PSTN) network.

In the case of video communication using the Internet, I.H.323, the standard recommendation of ITU, implements video communication on the Internet.

And in case of video communication using public telephone network, that is, PSTN network, video is transmitted and received using general telephone network using H.324, ITU's standard recommendation.

1 is a block diagram of a wired video telephone using a conventional PSTN network.

As shown, the wired video telephone 10 includes: a telephone line unit 11 connected to a counterpart terminal through a wired telephone network (PSTN network 9); A logic unit 12 connected to the telephone line unit 11 for performing demodulation and demodulation of a video signal and an audio signal; A camera unit 13 for capturing an image and transmitting the captured image to the logic unit 12; An image display unit 14 for outputting an image signal processed by the logic unit 12; A keypad unit 15 which receives a key value and transmits it to the logic unit 12; The handset unit 16 includes a speaker unit 18 for outputting a voice signal processed by the logic unit 12 and a microphone unit 17 for receiving a voice and transmitting the voice signal to the logic unit 12.

The terminal of the wired video telephone 10 having the above-described configuration modulates the video / audio signal by itself and exchanges it with the counterpart terminal through the PSTN network 9 to perform a video telephone function.

However, in the case of the wired video telephone 10, since the terminal is fixed to the PSTN network 9 or the IP network of the Internet, there is inconvenience in use.

On the other hand, Patent Application No. 10-1999-047307 (invention name: wired and wireless combined video phone using the video mobile phone) in the prior application, the data transmission and reception with the other video terminal and the other party through the wireless transmission network, video and audio signals and digital A portable unit performing a video demodulation function by performing modulation and demodulation between signals; A video mobile phone such as an IMT-2000 terminal, which is connected to the portable unit, and comprises a fixed unit which transmits / receives data to / from the other party's wired video terminal through a wired telephone network and performs a video call function by performing modulation / demodulation of video and audio signals. When moving or separating each device, each device operates as a portable video phone and a wired dedicated phone, and when used in combination, the video / audio input / output function of the video phone and the video / audio signal processing unit of the wired phone device can be used as a combination. The technique which makes it is disclosed.

This pre-patented patent claims a combination of a video mobile phone and a wired video phone, and when using a wired telephone network, there is a problem in that the portable unit and the fixed unit are connected by wire.

The present invention has been proposed in order to solve the above-mentioned problems with the conventional wired video telephone, and to provide a wireless video telephone that can transmit and receive video communication using a wireless terminal using a PSTN network. Is there.

Another object of the present invention is to provide a wireless videophone capable of transmitting / receiving video communications using an IP network of the Internet through a wireless terminal.

In order to achieve the above object, the present invention is connected to a PTSN network or IP network fixed device for transmitting and receiving video and audio data with the other party and wirelessly transmitting and receiving this data to a wireless terminal,

The present invention provides a wireless video telephone, comprising: a wireless terminal configured to separate the data into a video signal and an audio signal and perform a video call function by performing demodulation and demodulation of the video signal and the audio signal.

The present invention is also connected to a PTSN network or an IP network to transmit and receive video and audio data with a counterpart, separate the data into video and audio signals, and perform demodulation and demodulation of the video and audio signals. With fixing device,

The present invention provides a wireless video telephone comprising a wireless terminal configured to transmit and receive the video signal and the audio signal to perform a video telephone function.

1 is a block diagram of a wired video telephone using a conventional PSTN network.

2 is a block diagram of a wireless video telephone using a PSTN network according to the present invention.

3 is a block diagram of a wireless video telephone using an IP network according to the present invention.

<Description of the symbols for the main parts of the drawings>

8: IP network 9: PSTN network

20: wireless terminal 21, 34, 44: RF unit

22: logic unit 23: camera unit

24: Image display section 25, 35, 45: Keypad section

26: microphone unit 27: speaker unit

28: power supply unit 30, 40: fixed device

31: telephone line part 32, 42: wired logic part

33,43: charging section 41: network line section

36,46: PCA: Wireless Video Phone

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

First, the basic configuration of the present invention is connected to a PTSN network 9 or an IP network 8 to transmit and receive video and audio data with a counterpart, and to wirelessly transmit and receive this data to the wireless terminal 20. 40),

And a wireless terminal 20 that separates the data into a video signal and an audio signal and performs a video telephone function by performing demodulation and demodulation of the video signal and the audio signal.

In FIG. 2, the wireless video telephone A according to the present invention includes a fixing device 30 connected by a wired PSTN network 9 and a wireless terminal 20 wirelessly communicating with the fixing device 30.

The fixing device 30 is connected to the PSTN network 9, the telephone line unit 31 for transmitting and receiving, and the charging unit for supplying power to the wireless terminal 20 is connected to the power supply unit 28 in the wireless terminal 20 ( 33), the keypad unit 35 for receiving the key value and transferring it to the wired logic unit 32, and the RF unit 34 for performing modulation and demodulation for communication between the fixing device 30 and the wireless terminal 20 is provided. It is composed.

It also processes the key value received by the keypad unit 35, controls the charging unit 33, performs communication with the PC 36, and receives data input from the telephone line unit 31 and the RF unit 34. Wired logic unit 32 for processing and connecting to each other is configured.

The wireless terminal 20 is connected to the RF unit 21 for performing demodulation and demodulation for communication with the fixing device 30, and is connected to the RF unit 21 to digitally compress, encode or restore video signals and audio signals, and transmit and receive. A logic unit 22 to be connected to the charging unit 33 of the fixing device 30 to supply power to the wireless terminal 20, and to photograph and transmit an image to the logic unit 22. A camera unit 23, an image display unit 24 for outputting the reconstructed image processed by the logic unit 22, a keypad unit 25 for receiving a key value and transmitting it to the logic unit 22; The microphone unit 26 receives the voice and transmits it to the logic unit 22, and a speaker unit 27 outputs the voice signal processed by the logic unit 22.

In addition, the wireless video telephone (A) according to the present invention is composed of a fixed device 40 is connected to the IP network 8 wired and a wireless terminal 20 to communicate wirelessly with the fixed device 40.

The fixing device 40 is connected to the IP network 8, the network line unit 41 for transmitting and receiving, and the charging unit is connected to the power supply unit 28 in the wireless terminal 20 to supply power to the wireless terminal 20 ( 43), a keypad unit 45 for receiving a key value and transferring it to the wired logic unit 42, and an RF unit 44 for performing modulation and demodulation for communication between the fixing device 40 and the wireless terminal 20. It is composed.

In addition, it processes the key value received from the keypad unit 45, controls the charging unit 43, communicates with the PC 46, and processes data input from the network line unit 41 and the RF unit 44 And wired logic unit 42 is connected to each other is configured.

The wireless terminal 20 is connected to the RF unit 21 for performing demodulation and demodulation for communication with the fixing device 40, and is connected to the RF unit 21 to digitally compress, encode or restore video signals and audio signals, and transmit and receive. A logic unit 22 to be connected to the charging unit 43 of the fixing device 40 to supply power to the wireless terminal 20, and to photograph and transmit an image to the logic unit 22. A camera unit 23, an image display unit 24 for outputting the reconstructed image processed by the logic unit 22, a keypad unit 25 for receiving a key value and transmitting it to the logic unit 22; The microphone unit 26 receives the voice and transmits it to the logic unit 22, and a speaker unit 27 outputs the voice signal processed by the logic unit 22.

In FIG. 2, the fixing device 30 of the wireless videophone A is connected to the PSTN network 9, and in FIG. 3, the fixing device 40 of the wireless videophone A is connected to the IP 8 network. This works for both cases.

This depends on the implementation of the wired logic sections 32 and 42 and the logic section 22.

Digital compression encoding and reconstruction performed by the logic unit 22 of FIGS. 2 and 3 may be performed by the wire logic units 32 and 42.

In addition, the logic unit 22 and the wired logic units 32 and 42 may be partially performed, which depends on the implementation of the wired logic units 32 and 42 and the logic unit 22.

With the above-described configuration, the present invention implements a video telephone using the PSTN network 9 or the IP network 8 used in the conventional telephone, but implements it on the wireless terminal 20 for convenience.

In addition, it provides not only a video call but also a conventional voice call function to maintain compatibility with a conventional phone.

The operation is similar to a conventional cordless phone, but in addition to the conventional voice call function, a video call function is further added.

The video call function can be implemented by setting up a video call when making a first call or by switching to a video call during a voice call.

The power supply unit 28 of the wireless terminal 20 is charged through the charging units 33 and 43 of the fixing devices 30 and 40, and the fixing devices 30 and 40 are connected to the PC through the wired logic units 32 and 42. Communicate with (36,46) to perform required functions.

While the embodiments of the present invention have been described above, the present invention may use various changes, modifications, and equivalents.

It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments.

That is, the present invention is based on a video mobile phone service and a conventional wired video telephone, which will be implemented later, and used to provide a video telephone service based on a modem, a cable modem, or an asymmetric subscriber line (ADSL) technology in a wired environment. Can be.

As described above, by using the wireless video telephone according to the present invention, the video telephone communication can be performed wirelessly, thereby increasing the usability and having the convenience of making a video call while moving freely within a predetermined range.

Claims (9)

A fixed device connected to a PTSN network or an IP network to transmit and receive video and audio data with a counterpart, and to wirelessly transmit and receive this data to a wireless terminal; A wireless terminal for separating the data into a video signal and an audio signal and performing a video telephone function by performing demodulation and demodulation of the video signal and the audio signal; Wireless videophone characterized in that configured The apparatus of claim 1, further comprising: a fixing device connected to the PSTN network; A telephone line unit connected to the PSTN network to transmit and receive; A keypad unit for receiving a key value and passing it to a wired logic unit; An RF unit for performing modulation and demodulation for communication between the fixed device and the wireless terminal, It is a wire logic unit that processes the key value received from the keypad unit and communicates with the PC and connects the telephone line unit and the RF unit. Wireless videophone characterized in that configured. The apparatus of claim 1, further comprising: a fixing device connected to the IP network; A network line unit connected to the IP network for transmission and reception; A keypad unit for receiving a key value and passing it to a wired logic unit; An RF unit for performing modulation and demodulation for communication between the fixed device and the wireless terminal, It is a wired logic unit that processes the key value received from the keypad unit and communicates with the PC and connects the network line unit and the RF unit. Wireless videophone characterized in that configured. The method of claim 1, wherein the wireless terminal; RF unit for performing demodulation and demodulation for communication with the fixing device, A logic unit connected to the RF unit for digitally compressing, restoring, transmitting and receiving a video signal and an audio signal; A camera unit for capturing an image and transmitting the image to the logic unit; An image display unit for outputting a reconstructed image processed by the logic unit; A keypad unit for receiving a key value and transmitting the same to the logic unit; A microphone unit for receiving a voice and transmitting the voice to the logic unit; A speaker unit for outputting a voice signal processed by the logic unit, Wireless videophone characterized in that configured. A fixed device connected to a PTSN network or an IP network to transmit and receive video and audio data to and from the other party, separate the data into video and audio signals, and perform demodulation and demodulation of the video and audio signals; A wireless terminal for transmitting and receiving the video signal and the audio signal to perform a video call function; Wireless videophone characterized in that configured. The apparatus of claim 5, further comprising: a fixing device connected to the PSTN network; A telephone line unit connected to the PSTN network to transmit and receive; A keypad unit for receiving a key value and passing it to a wired logic unit; An RF unit for performing modulation and demodulation for communication between the fixed device and the wireless terminal, A wired logic unit which processes key values received by the keypad unit, communicates with a PC, connects the telephone line unit and the RF unit, and compresses, decompresses, and transmits and receives the video signal and the audio signal digitally. Wireless videophone characterized in that configured. The apparatus of claim 5, further comprising: a fixing device connected to the IP network; A network line unit connected to the IP network for transmission and reception; A keypad unit for receiving a key value and passing it to a wired logic unit; An RF unit for performing modulation and demodulation for communication between the fixed device and the wireless terminal, The wired logic unit processes key values received from the keypad unit, communicates with a PC, and connects the network line unit and the RF unit, and compresses, restores, and transmits and receives the video signal and the audio signal digitally. Wireless videophone characterized in that configured. The method of claim 5, wherein the wireless terminal; RF unit for performing demodulation and demodulation for communication with the fixing device, Logic unit connected to the RF unit for transmitting and receiving data and controlling each part, A camera unit for capturing an image and transmitting the image to the logic unit; An image display unit for outputting a reconstructed image processed by the logic unit; A keypad unit for receiving a key value and transmitting the same to the logic unit; A microphone unit for receiving a voice and transmitting the voice to the logic unit; A speaker unit for outputting a voice signal processed by the logic unit, Wireless videophone characterized in that configured. The wireless videophone according to claim 1 or 5, wherein the fixing unit comprises a charging unit, and the wireless terminal is configured with a power unit connected to the charging unit to supply power to the wireless terminal.