KR100414422B1 - Interlocking video phone with wireless phone - Google Patents

Abstract

The present invention relates to a video phone capable of interworking with a wireless telephone, and more particularly, by using a combination of a video telephone and a general wireless telephone to control the video telephone directly from the wireless telephone for end-user convenience. The present invention relates to a wired / wireless video telephone using a wireless telephone function capable of making a video call while using a wired telephone.

The present invention provides a display unit which displays a telephone number to be transmitted and CID information of a received telephone, a MCU which controls the display unit, its own keypad and a speaker, and controls wireless transmission / reception with an RF base station of a video telephone. A radiotelephone comprising a handset RF module for converting input data into a radio frequency band; RF base station that receives and processes radio signals from the radiotelephone and sends them to a video processor, a video processor for processing image-related data, compressing and restoring audio, and controlling the entire system, and a display for displaying signals received by the video processor. A video telephone unit comprising a unit, a camera module for sending an external video signal to the video processor, and a general telephone unit which operates like a normal voice telephone when there is no power; A wireless interface for transmitting and receiving a signal wirelessly between the wireless telephone and a video telephone; It is composed.

Description

Intercoming video phone with wireless phone {Interlocking video phone with wireless phone}

The present invention relates to a video phone capable of interworking with a wireless telephone, and more particularly, by using a combination of a video telephone and a general wireless telephone to control the video telephone directly from the wireless telephone for end-user convenience. The present invention relates to a wired / wireless video telephone using a wireless telephone function capable of making a video call while using a wired telephone.

As shown in FIG. 1, the video telephone 10 uses the general telephone line 12 to make voice and video calls using the H.324 protocol, which is a video calling protocol.

At this time, the maximum speed of the data modem specified in the H.324 protocol is 33.6 Kbps, and may be interfaced less than the above speed depending on the line characteristics of the telephone line 12.

Data is transmitted / received using a data modem on the telephone line 12 and a call is made while looking at the other party's face through the TFT-LCD panel, that is, the display unit 14.

When the video telephone 10 does not have power, it can be used as a general wired / wireless telephone capable of only a voice call.

2 shows a wired / wireless telephone 20, which is composed of a fixed telephone line 22 and a wireless telephone 24 that is a handset communicating with the fixed device using a wireless protocol.

The fixed line telephone 22 is fixed at a predetermined position, generates a ring tone by a call request signal received through a public public network (PSTN), and also uses an antenna 22b provided in the fixed line telephone 22. The call request signal is transmitted to the wireless telephone 24 through the wireless interface 26 so that a ringing tone is generated in the wireless telephone 24.

The wired telephone 22 may generate a call request signal using the keypad 22a provided in the main body and output the call request signal to the outside through a public public telephone network (PSTN), and also the antenna 24a of the wireless telephone 24. ) Receives a call request signal transmitted through the air interface 26 through the antenna 22b and transmits it to the outside through a public payphone network.

That is, the wired telephone 22 and the wireless telephone 24 transmit and receive signals using a wireless protocol, and the frequency used at that time is a 900 MHz band that is widely used as a wireless telephone.

The video telephone 10 capable of video and voice calls through the telephone line 12 has not been widely used to date, and the wireless telephone 24 using the frequency of the 900 MHz band has been widely used. There is a tendency to prefer a telephone 24.

Therefore, it is necessary to develop a video phone that allows users to make video calls when needed while using a wireless phone.

Meanwhile, a wired / wireless combined video telephone (application number 10-1999-0047307) using a video cellular phone is pre- filed, which transmits / receives data to / from the video terminal of the other party through a wireless transmission network, and modulates and demodulates between video and audio signals and digital signals. A portable unit performing wireless video telephony by performing a function; It is connected to the portable unit, and transmits and receives data to and from the other party's wired video terminal through a wired telephone network, and performs a video call function by performing modulation and demodulation of video and audio signals, thereby using a video mobile phone such as an IMT2000 terminal. 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 mobile phone and the video / audio signal processing unit of the wired telephone device can be used in combination. .

However, the pre- filed video telephone requires a modulator / demodulator for enabling data communication of a wireless terminal, which is required for a fixed part and a portable part, which complicates a circuit, and the module price of a wireless modulator / demodulator used for this is expensive.

In addition, since the expensive TFT-LCD constitutes the display unit of the wireless terminal and the image fixing terminal, there is a problem in that it is not economical because it adds the circuit of the modulation / demodulation unit and increases the price.

The present invention has been made to solve the above-mentioned problems, and by adding a conventional FM (Analog FM) function that is currently used in video telephones, it is much more convenient, economical and efficient for consumers who are familiar with wireless telephones. Its purpose is to provide a videophone that can be linked with a wireless telephone that can use a telephone.

In order to achieve the above object, the present invention provides a display unit for displaying the telephone number to be transmitted and the CID information of the received telephone, and controls the display unit, its own keypad and speaker, and controls wireless transmission and reception with the RF base station of the video telephone. A radiotelephone comprising: an MCU, and a handset RF module for converting data input from the MCU into a radio frequency band; RF base station that receives and processes radio signals from the radiotelephone and sends them to a video processor, a video processor for processing image-related data, compressing and restoring audio, and controlling the entire system, and a display for displaying signals received by the video processor. A video telephone unit comprising a unit, a camera module for sending an external video signal to the video processor, and a general telephone unit which operates like a normal voice telephone when there is no power; A wireless interface for transmitting and receiving a signal wirelessly between the wireless telephone and a video telephone; It is intended to provide a video telephone that can be linked with a wireless telephone, characterized in that configured.

1 is a diagram showing a general video telephone.

2 is a diagram illustrating a general wired / wireless telephone.

3 is a view showing a video telephone according to the present invention.

4 is a block diagram of a video telephone according to the present invention.

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

10: video telephone 12: telephone line

14: display unit 20: wired / wireless telephone

22: landline phone 22a: keypad

22b: antenna 24: cordless phone

24a: antenna 26: wireless interface

40: video telephone 41: display unit

42: CID unit 43: general telephone unit

44: RF base station 45: camera module

46: video processor 47: video access key

50: radiotelephone 52: numerical display unit

53: Video access key 54: MCU

56: handset RF module 58: keypad

60: radio interface 70: PSTN

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

First, the present invention consists of a radiotelephone 50 and a video telephone 40 which are transmitted and received by the radio interface 60.

The video telephone 40 is connected to the PSTN 70 using a telephone line to enable voice and video calls with an external counterpart.

The wireless telephone 50 is composed of a keypad 58, a display unit 52, a video access key 53, MCU 54, a mobile phone RF module 56, wirelessly using a 900MHz wireless protocol video ( The video connection can be made with 40, and a digital call can be made while watching the voice call and the other party's appearance displayed on the display unit 41 of the video telephone 40. FIG.

The video access key 53 is configured separately from the existing keypad 58, and a digital code of the video access key 53 is a code not used among the existing codes.

The display unit 52 is composed of an LCD and displays a telephone number to be sent to the other party, CID (Caller ID) information of the received telephone, and a previously transmitted telephone number.

The MCU 54 (Main Control Unit) controls the LCD display unit 52, the keypad 58, the video access key 53, the speaker, and the like of the wireless telephone 50, and the RF base station of the video telephone 40. Control wireless transmission and reception with (44, (RF Base Station)).

The handset RF module 56 converts the data received by the MCU 54 of the radiotelephone 50 into a radio frequency band so as to transmit and receive radio data with the video telephone 40.

The video telephone 40 includes a display unit 41, a CID unit 42, a general telephone unit 43, an RF base station 44, a camera module 45, a video processor 46, a video access key 47, a modem. 48, it receives a digital code from the radiotelephone 50 and transmits a signal to the PSTN 70 of the telephone line.

The modem 48 is used to make a video and audio call with a general PSTN 70. The modem 48 converts a digital video and audio signal to be output to an external PSTN 70 into an analog signal and is input from an external PSTN 70. Convert analog video and audio signals to digital signals.

The video access key 47 is a key for making a video call with the other party using only the video telephone 40 without the wireless telephone 50.

The video processor 46 processes image related data, compresses / restores an audio signal, and controls a modem 48 and the like.

It also controls the video signal output from the camera module 45 receiving the external video signal and the video signal output to the display unit 41.

The display unit 41 is composed of a TFT-LCD and displays a signal received from the video processor 46 and is applicable to both analog video signals (NTSC / PAL) and digital signals.

The camera module 45 sends a video signal of the user captured by the camera attached thereto to the video processor 46.

The RF base station 44 operates the radio interface 60 with the radio telephone 50, sends a signal received from the radio telephone 40 to the video processor 46, and executes the signal.

When the power source 43 is not connected to the video telephone 40, the general telephone unit 43 operates like a normal voice telephone so as to make a voice call with the outside through the PSTN 70.

The CID (Caller ID) unit 42 receives and provides caller identification number information from an exchange of an external telephone station through the PSTN 70.

The components of the radiotelephone 50 and the video telephone 40 in the above is only the configuration of the features according to the present invention, and other general and natural configurations such as an antenna or a camera are not specified, but can be easily implemented by those skilled in the art. Of course not.

When the wireless telephone 50 and the video telephone 40 are combined to use a wireless telephone and make a voice and video call through the video telephone, the display unit of the video telephone 40 does not have the wireless telephone 50. 41, the modem 48, the video processor 46 and the functions of the camera (not shown) are provided to the wireless telephone 40 by pressing the video access key 53 to perform the video telephony function.

At this time, the voice uses a speaker and a microphone not shown in the wireless telephone 50.

When the wireless telephone 50 and the video telephone 40 are combined to use the wireless telephone and make only a voice call through the video telephone, the modem 48 of the video telephone 40 does not have the wireless telephone 50. In addition, a function of the video processor 46 is provided to the wireless telephone 40 to perform a voice call function.

At this time, the voice uses a speaker and a microphone not shown in the wireless telephone 50.

When making a voice call or making a voice call or video call using the video phone 40, the video access key 47 is pressed to classify the call type and the video processor 46 controls the system according to the classification.

As described above, the present invention can be used to separate the video phone 40, the video phone 40 is a combination of the wireless phone 50 and the video phone 40, the function of the wireless phone 50 does not provide By providing a video call through a wireless phone 50 familiar to consumers.

As described above, according to the video telephone interoperable with the general wireless telephone which is currently used of the present invention, by adding the wireless telephone function to the video telephone, the voice video call is much more convenient and efficient for consumers who are used to the wireless telephone. Can be provided.

Claims (3)

A display unit for displaying a telephone number to be transmitted and CID information of a received telephone, an MCU which controls the display unit, its own keypad and a speaker, and controls wireless transmission and reception with an RF base station of a videophone, and data input from the MCU. A radiotelephone comprising a handset RF module for changing to a radio frequency band; RF base station that receives and processes radio signals from the radiotelephone and sends them to a video processor, a video processor for processing image-related data, compressing and restoring audio, and controlling the entire system, and a display for displaying signals received by the video processor. A video telephone unit comprising a unit, a camera module for sending an external video signal to the video processor, and a general telephone unit which operates like a normal voice telephone when there is no power; A wireless interface for transmitting and receiving a signal wirelessly between the wireless telephone and a video telephone; A video telephone interoperable with a wireless telephone, characterized in that configured. The video telephone apparatus as claimed in claim 1, further comprising a video access key configured to connect a video telephone to the wireless telephone to access a video. The video telephone device of claim 1, further comprising a CID unit configured to receive and provide caller identification number information from the exchange through the PSTN.