KR100545901B1 - A wireless system for transmitting and receiving multimedia data free of charge and a method therefor - Google Patents

Abstract

The present invention is free to move within a short distance using the Internet network 400, the wireless call / video communication and multimedia data transmission and reception between the terminals, wireless Home Security / Home Automation / multimedia data capable of ubiquitous (ubiquitous) Networking environment It relates to a wireless mobile free transmission and reception system and method.

The mobile terminal (device B) 200 defined in the present invention basically has a binary CDMA wireless transmission / reception module, and has a post PC (PDA, SmartPhone, WebPad, Tablet) with or without a camera, a microphone, and a speaker. PC, etc.), mobile (mobile) wireless communication terminal, remote control robot, various sensors (temperature, humidity, illuminance, heat detection, etc.), such as a small wireless camera that can incorporate various sensor signal detection functions and door opening / closing functions. ) And door lock switchgear.

The wired / wireless conversion repeater (A device) 100 receives multimedia data from the B device 200 in a wireless communication method, connects the Internet network 400 to transmit the data, or vice versa. The multimedia data is transmitted to the B device 200 by a wireless communication method, and on the contrary, it is received from the Internet to output or control a signal through a video / audio output port or a home networking / home automation control target device (TV, VTR, audio, Air conditioner, DVD, Settop Box, MP3 Player, etc.) is remotely controlled using the integrated / easy / learning remote control function provided in the A device 100 itself at a short distance of the A device 100, and has a wired telephone function. It is defined as a wired / wireless conversion repeater.

Between the B devices or between the A device 100 and the B device 200, a wireless communication method is used to smooth multimedia data (various information such as video, audio, text, and graphics) with robustness against external noise and interference. Sending and receiving is possible.

The B device 200 includes a "wireless transceiver module" performing the "wireless transmission / reception function using the wireless technology" with the A device 100 in a hardware-on-board form or a circuit block or slot (eg PCMCIA). It is embedded in card form or in the form of software module function.

The present invention, in the state A devices are connected to the Internet network 400 via the access network (Access Network), based on one A device 100 in the near (10m, 30m, 50m, 100m Collision noise between a plurality of B devices within a 500m, a 1km, a 2km, etc.) and a plurality of B devices 200 in a short distance based on the A device 100 located elsewhere via the Internet. The present invention relates to a free multimedia data transmission / reception system capable of transmitting and receiving multimedia data between B devices at any time and anywhere without noise or mutual interference.

This system uses wireless modem technology (e.g. PW / CDMA, MP / CDMA, CS / CDMA, CA-CS / CDMA, etc.), so it depends on the type of multimedia data (e.g. video, audio, text, graphics, etc.). ) It selects and uses wireless technology to secure the required transmission bandwidth so that you can enjoy smooth wireless communication anytime, anywhere in free one-way or two-way.

By using the system of the present invention, it is possible to use a conventional paid telephone call and a video call free of charge, and it is possible to build a wireless home network so that home security can be implemented free of charge.

Multimedia data, transmission and reception system, wireless, mobile, free.

Description

A wireless system for transmitting and receiving multimedia data free of charge and a method therefor}             

1 is a diagram illustrating a configuration of a system for free transmitting and receiving multimedia data according to the present invention.

2 is an embodiment of a schematic diagram of an A device according to the present invention.

Figure 3 is an embodiment of a B device configuration according to the present invention.

Figure 4 is an embodiment of the configuration of the telephone function IP acquisition unit according to the present invention.

5 is a block diagram of a telephone function unit according to the present invention.

6 is a preferred embodiment of the circuit diagram of FIG.

7 is a block diagram of a PSTN modem according to the present invention.

8 is an operation flowchart of a telephone function IP acquisition unit according to the present invention.

9 is an embodiment of a device A power supply unit.

10A illustrates one embodiment of a software architecture for MPEG-4 video data transmission over the Internet.

10B shows a hierarchical data structure of a protocol stack used in the apparatus of the present invention.

11 is an operation flowchart of apparatus A according to the present invention.

Figure 12a is a mobile terminal case according to the present invention the internal configuration.

12B is an external configuration diagram of a mobile terminal case according to the present invention.

<Brief description of the main parts of the drawings>

30: Zener Diode 31: Photocoupler

32: light emitting transistor 33,40: MCU (Microprocessor)

34,35: capacitor 36,37: resistance

41: Memory (EEPROM) 42: Real Time Clock

43: Hook Detector 44: DTMF Receiver

45: Line Selector Switch 46: Surgy Protector

47: Telephone 48: Matching Circuit

49: Interface Circuit 50: IP

51: Number 52: Modular Jack (RJ-12)

53: xDSL Modem 54: Cable Modem

55: user PC

56: Desktop PC / Notebook Computer / Web Pad 57: LCD Display

58: landline phone 59: USB Camera

61: PC Lan card 62: Incoming signal part

63: dial 64: call

65: DTMF Receiver 66: Ring Detector

67: Pulse Generator 68: DTMF Amp

69: DTMF Generator 70: With PSTN Modem Function

71: CPU 72: Modem Chip

73: DAA (Data Access Arrangement) / OH RI 74: Wireless Internet Access Card

75: AP 76: ADPCM Codec

77: Ringer Speaker / Buzzer 78: Receiver Speaker

79: microphone 80: USB external HDD / Flash

81: External video / audio source (TV / DVD / VCD / STB)

82: home automation / home network control target device 83,200: B device

84,90,93: Mobile Phone Keypad 85,92: Call Button

86: key input 87: microphone

88: mobile phone built-in speaker 89: mobile phone built-in camera

91: small color LCD 94: keypad

96: USB terminal 97: DC output terminal

100: A device 101: AC plug

102: AC Adapter 103: Power Supply & Regulation

104: rechargeable battery 105: terminal (antenna)

110: Binary CDMA wireless transmitter and receiver 111: Binary-CDMA Modem

112: TDMA RF Module 120: A / V codec

130: network connection unit 140: control unit

150: memory unit 160: A / V input / output / control unit

170: power supply unit 180: telephone function IP acquisition unit

181: MPU (RISC) 210: Binary CDMA wireless transceiver

215: A / V codec unit 220: Screen display unit

230: control unit 240: memory unit

256: CCD camera unit 260: audio input and output unit

265; Camera unit 270: Key input unit

280: external interface unit 290: power supply unit

300: user PC 301: user interface

302: MPEG-4 video processing module 303: transmission module

304: Video Capture 305: Video Render

306: Codec (MPEG-4) 307: RTP Send Payload Handler

308: RTP Receive Payload Handler 309: Winsock

400: internet network 401: UDP / IP

402: RTP transmission interface 403: RTP Library

404: RTP receiving interface 405: Network Interface

500: PSTN network 801: speaker

900: Combined function B device 901: Optical zoom color rotating camera

902: small color TFT-LCD 903: sliding keyboard

904: power input unit B device 905: wired LAN function unit

906: large capacity HDD 907: large capacity charging battery

908: call button 909: various functions

1000: mobile terminal case 1001: mobile / mobile terminal

1002: wireless voice call device (an embodiment of the B device function module)

1003: mobile battery 1004: interface function

1005: 24-pin connection 1010: LED flashlight

1011: USB Flash Memory 1012: FM Radio Module

1013: USB connector 1014: Handle

1015: Push Button 1016: Jam Jaw Male

1017: hanger 1018: rotating shaft

The present invention provides free wireless communication between terminals while moving in the local area free of charge using the Internet network, and freely transmitting and receiving multimedia data through the Internet or PSTN network, or free of multimedia data capable of wireless home security and home automation. It relates to a transmission and reception system and a free transmission and reception method.

Since the conventional video telephone was only able to make a video call through a camera and an audio input / output device provided in the main body, it was inconvenient to have to make a call at the place where the video telephone was installed and to move the main body to transmit another current situation. . In addition, video signals from multiple cameras cannot be simultaneously or selectively transmitted to the other party, and external video / audio signals can be received and transmitted by wire (telephone line, Internet), but wireless transmission is not possible.

In addition, the door phone function and the security function was conventionally possible by wire, but not by wireless. In the conventional relay device for monitoring and management system using the Internet, a user selects any one of a plurality of data (video and audio) transmitted by a wireless camera installed in the wireless receiving device as a reverse control signal and monitors it on the Internet. The conventional device was capable of acquiring voice and video only in one direction (from the wireless camera to the monitor via the Internet), and when multiple wireless cameras exist, transmitting data to the wireless receiver simultaneously. There was no countermeasure against collision and noise generation.

In addition, conventionally, a technique for a wireless camera using a method of wirelessly transmitting video and audio data is not known. Especially in the wireless transmission method of data, wireless camera can be operated at the same time. When the analog FM system is used, when two or more wireless cameras transmit data using the same frequency band, There was no mention of the technology in which measures were in place.

In the wireless transmission method of existing data, even if the digital wireless method is used, there are numerous communication methods, and when there is no method to protect against data collision, mutual interference noise and external noise when transmitting and receiving data between devices, There was a problem that can not operate a plurality of wireless cameras due to noise.

The present invention is free of wireless home networking, wireless home security, home automation, free A home, A device with a binary CDMA wireless communication function that can block interference between devices and user operation program. Provides video and voice telephone service, and outputs the video signal of A device, video signal and audio device (e.g. TV, DVD Player, VCD Player, VTR, SetTop Box, MP3 Player, etc.) connected to audio input / output port. Is a technology that allows the other party to watch by moving to the other party wirelessly from or to the other party for free viewing through the Internet network, and enables wireless communication between the A device and the B device and wireless communication between the B device. It aims to provide.

Other objects and advantages of the present invention will become more apparent from the following detailed description of the invention and the accompanying drawings.

Figure 1a is an embodiment of a schematic diagram of a multimedia data transmission and reception system according to the present invention. For the explanation of this system, first, A device and B device will be explained.

1. A device

In the present invention, a "wireless / wireless conversion repeater" having a function including a wired telephone function, an internet access function, and a PSTN modem function is defined as "A device." 2A and 2B illustrate one embodiment of an A device in accordance with the present invention that may be used in the system of FIG. 1A.

A device 100 is a binary for digitally demodulating the multimedia data transmitted and received through the terminal (antenna) 105 by the B device 200 and the binary CDMA wireless communication method described below to obtain and transmit video and audio data. The CDMA wireless transmission / reception unit 110, the A / V codec unit 120 for compressing and restoring video and audio data obtained from the binary CDMA wireless transmission / reception unit 110, and the compressed multimedia data are transmitted or received via the Internet. Network connection unit 130 for providing an interface means capable of storing, the memory unit 150 for storing and receiving the user program and system programs temporarily stored in the transmission or transmission, and input and output interface means and control of the external video / audio signal An A / V input / output / control unit 160 providing a means, and a power supply unit 170 for supplying power to the entire system.

9 shows an embodiment of the power supply unit 170 of the A device. Receives the DC voltage applied from the normal household power supply (AC110 ~ 220V) via the AC plug 101 via the DC Power Adapter 102 and regulates it via the Power Supply & Regulator (103) to the internal power supply of the A device. It can be used directly or charged to a rechargeable battery (NiCd Battery) 104, and supplies power for the A device to operate even in an emergency (eg in case of power failure).

The A device 100 also includes a telephone function IP acquisition unit 180, and the telephone function IP acquisition unit 180 uses the PSTN modem function unit 70 which is present in the A device 100 between the A devices 100. Acquire each other's own Internet address information (IP address, Internet Protocol Address or Internet Address) and provide it to the other party, and modulate the digital data output from the Binary CDMA wireless transmitter / receiver 110 into a wired telephone signal to the other party through the telephone network. It transmits or modulates the analog voice telephone signal received from the telephone network into a digital signal and sends it to the binary CDMA wireless transmission and reception unit 110. The A device 100 also includes a control unit 140 that controls the respective components as a whole. The control unit 140 of the A device is composed of the CPU 71, the MCU 40, the MPU unit 181, and the like (see Fig. 2B).

As shown in FIG. 1B, the device A is externally connected to the wireless Internet access card (e.g., PCMCIA card) 74 which can be mounted on the device A or via the xDSL modem 53 or the cable modem 54. It is connected to the Internet via an AP (802.11 Access Point) 75 (attached to the wall), and connected to the Modular Jack (RJ-12) 52 of the building to the PSTN telephone network. The A device may be connected to or fixed to the modular jack 52 of a building, and may be used to charge 48V power which is always supplied from a telephone line, or use the charged power as an internal power supply in an emergency.

A large number of user PCs 55 are connected to the Internet, and the A device 100 is a LAN card for the PC in the home PC which allows the home PC (desktop PC, notebook, Web Pad, etc.) 56 to be connected to the Internet. The interface unit (PC_LAN) 61 is provided, and the general telephone 58 is connected through a telephone line interface unit (TEL) 47. The external HDD / Flash Memory 80 is connected to the USB port (USB) 96. The external video / audio device (TV, DVD, VCD / STB, etc.) 81 is connected to the A / V input / output unit 160 and controlled by its integrated remote controller function. It is preferable that the A device 100 also includes an IP button 50 and a telephone button 51.

The terminator (antenna) 105 is a gateway through which all signals enter and exit, and it is preferable to use a commercially available and inexpensive TDMA RF module and an antenna (also a chip antenna).

The telephone function IP acquisition unit 180 is composed of a PSTN modem function unit 70 and a telephone function unit 60, as shown in FIG. 4, and Internet address information of the A device 100 from various other A devices 100. It can be received through the built-in PSTN modem function unit 70 and the telephone line, and can provide its own Internet address information to various other A device 100 through the PSTN modem function unit 70 and the telephone line. The operation process is started by calling the other party by pressing the IP button 50 and the telephone button 51 of the A device 100 while the power is turned on, and the specific method is shown in FIG. That is, the source A device 100 turns off the hook after obtaining its Internet address information from the network connection unit (LAN card function unit) 130. The exchange then sends a dial tone to the calling party's PSTN modem function, and the calling party enters (dials) the telephone number of the receiving device A (100) into the exchange. The exchange then transmits a ringing tone (ring back tone) to the calling PSTN modem function and simultaneously transmits a ringing tone (ring tone) to the exchange close to the receiving side. Then, when the receiving side turns off the hook, the exchange close to the receiving side which receives this signal sends a response signal to the exchange close to the originating side, and then the line connection is established and the transmitting and receiving A devices make a call. When the calling party (in the PSTN modem function unit) sends its own Internet address information to the called party (in the PSTN modem function unit), the receiving party receives the calling party's Internet address information, stores it in memory, and sends it to the calling party's Internet address. Send information. The sender sends a signal to the receiver that it has received the receiver's Internet address information. When the receiver turns on the hook, the exchange close to the receiver sends a termination signal (CB) to the exchange close to the receiver, and the sender also hooks. When on, the exchange close to the sending side sends a line disconnect signal CF to the exchange close to the receiving side, and the exchange close to the receiving side sends a recovery complete signal RRG to the exchange close to the calling side.

Meanwhile, an embodiment of the PSTN modem function unit 70 includes a CPU 71, a memory 41, a modem chip 72, and a data access arrangement (DAA) 73 as shown in FIG. 7. . The modem chip 72 modulates the digital data received by the CPU 71 into a telephone line signal or demodulates the analog signal from the telephone line into digital data. Therefore, it is desirable to use tantalum capacitors with good frequency characteristics around the chip. The CPU 71 and the microprocessor (MCU) 40 connect or disconnect the telephone line to the PSTN modem 72. The CPU 71 and the MPU unit 181 of the A device transmit and receive actual data and control data and perform modem functions. To control. When an incoming call is received, a high AC signal voltage is applied to the telephone line. When the modem detects the AC voltage (eg Active High) while it is insulated by the DAA 73, the external telephone line is connected to the telephone side 58. The connection is disconnected and connected to the modem 72, and the received analog data is demodulated and transmitted to the CPU 71 for processing.

When power is supplied to the A device, the control unit receives an Internet address such as a MAC address (physical address), an IP address, a default gateway, a DHCP server, and DNS servers from the network connection unit 130 (LAN card function unit). The information is obtained and stored in a specific space of the memory unit 150. When the user presses the IP button 50 (which serves as a hook switch) of the A device 100, the A device forms a closed loop with the exchanger to generate a current. The exchange detects this current and sends a dial tone (signal to press the telephone number), which the user hears through the speaker 801 and uses the telephone number button 51 to dial the other party's telephone number. When inputted, the exchange sends a ring back tone to the calling party A device while ringing the ring back tone. At this time, the control unit of the counterpart receiving side A device is hooked off and a line is connected to transmit and receive data through the PSTN modem function unit 70 in both A devices. At this time, the other party's A device also transmits its own Internet address information.

When the user presses the call button (92, 85) on the B device using the B device, the A device receives the pressed signal wirelessly and operates in the telephone function mode. Disconnect the external telephone line connected to page 58 and connect to the PSTN modem function to modulate the call signal data from the telephone number input signal transmitted wirelessly from the B device to the other side, and modulate the analog signal from the other side to the B device wirelessly. By transmitting, a PSTN radio telephone is established between devices B with devices A interposed.

The telephone function unit 60 may be configured as shown in FIGS. 5 and 6A and 6B to provide additional functions (eg, speed dial, telephone number memory, etc.). In FIG. 5, the incoming signal unit 62 includes a ring signal detector 66, a DTMF generator 69, a microprocessor (MCU) 40, a memory 41, and a real time clock generator 42. 64 includes a hook signal detector 43 and a DTMF receiver 44.

In FIG. 6A, the DTMF generator 69 receives a digital data bit stream generated by the MCU 40 and generates a corresponding DTMF tone signal (Dual Tone Multi Frequency), and each digit of the telephone number to be transmitted to the other party. Outputs The DTMF Amp 68 amplifies the DTMF tone output signal generated by the DTMF Generator 69 so as to obtain a constant output regardless of line conditions.

6B illustrates an embodiment of a ring detector 66 circuit. This circuit is for determining the presence or absence of the ring signal. The operation process is performed by the zener diode (30), the capacitor 2.2μF / 100V (35), and the 750KΩ (36) resistor when the ring signal comes from the telephone line. The 31 operates to charge the condenser 34 with the current flowing by the turn ON of the photo transistor 32 for a predetermined time. This charged voltage is transmitted to the microcontroller 40 through the resister 37.

When the telephone number is input using the IP button 50 and the telephone button 51 of the A device, data is transferred from the DAA 73, which is a telephone line interface device, via the modem chip 72 from the CPU 71 of FIG. In fact, the carrier signal is output and sent (transmitted) to the telephone exchange through the telephone line, and the telephone exchange exchange sends an AC 75r.ms signal to the other party A device 100, and the reverse process is also performed. Are formed, and the Internet address information obtained from the network connection unit 130 is exchanged with each other.

If the other party is using a telephone line with someone (for example, while making a call), a signal indicating that the user is on the phone is heard from the telephone exchange's auto-switch, and this signal indicates that the A device 100 is busy. 57 may be displayed or notified to the B device 200.

After the power of A device and the other device A is exchanged, the Internet address information is continuously exchanged unless the other party's or the other party's power is turned off. Even if the Internet address information is changed by the contractor), the A device immediately informs the other device that the Internet address information has changed, so that the other device A can update its Internet address information and keep the connection.

In FIG. 2A, the controller 140 reads the interrupt request of the network connection unit 130 or the contents of an internal specific register of the network connection unit 130 at a predetermined time interval using a timer interrupt, thereby internet network. Whether the data flows from the network, and the compressed video and audio data are transmitted to the Internet through the network connection unit 130 using TCP / IP, UDP / IP, RTP, and RTCP. To help.

The network connection unit 130 of the A device transmits the audio / video signal and data demodulated by the binary CDMA wireless transmission / reception unit 110 via an Ethernet / LAN network to the Internet / Multimedia Transfer Protocol (Ethernet, TCP / IP, UDP, RTP, RTCP, ARP, RARP, ICMP, IGMP, etc.) to deliver to the other device A 100, and transmits the data signal received from the Internet network to the binary CDMA wireless transmission and reception unit 110. Therefore, some A devices can perform 1: 1 or 1: N communication with the user PC 55 via the Internet, and 1: 1 or 1: N communication with B devices centering on the opposite A device.

Similarly, the A device has a function (A / V input / output) for receiving audio and video signals from an external video and audio device (e.g., TV, DVD player, V-CD player, VTR, MP3 player, etc.) 81 and the like. The integrated remote control function of external devices allows you to watch video or audio on the other side even if they are far apart from each other on the Internet, and to transmit and receive video (for example, play a DVD movie on a Korean A device and play a user PC in the US) Alternatively, another A device 100 may be used to watch a DVD movie or perform a control operation).

Since the A device is equipped with the USB recognition device function of USB2.0, when the USB camera 59 is connected to the A device or an external USB large capacity HDD / Flash memory 80 is connected from the outside, these devices are accessed from the Internet. (Access) can search or send and receive the desired data, and the image taken from the camera can perform the functions of the Web Camera as it is.

The power supply unit 170 of the A device can receive power from the AC to DC adapter, but a feature of the present invention is that in case of an emergency (for example, in case of a power failure), a DC 48V power supply is always supplied from a telephone exchange through a telephone line. Since a power source charged in a high capacity (eg, lithium ion battery, polymer battery, etc. of 1350 mAh, 1700 mAh, 2200 mAh, etc.) is used, the A device 100 operates even if the power of the building using the A device is out of power. Can be as. In addition, since the power charged in the charging battery of the A device 100 can be output to an external device through the DC output terminal 97, an external device (for example, an ADSL modem or a cable modem near the A device 100) can be output. Power) can be supplied. Therefore, since the Ethernet LAN can continue to operate even when the building is out of power, voice communication or video communication can be continued between the A devices 100.

The device A of the present invention includes an input port 160 for audio and video signals. The device A receives multimedia data from the device B in a binary CDMA wireless communication method and connects the data to the Internet network, or vice versa. It transmits the received multimedia data to B device by Binary CDMA wireless communication method and outputs the output signal of external video and audio equipment (DVD player, TV, VTR, cable and satellite set top box, MP3 player, etc.) to A / V input and output. It is a wire / wireless conversion repeater that is input through the control unit 160 and transmitted to the B device by the binary CDMA wireless method. Therefore, the user carrying the B device can watch movies, dramas, news, etc. anywhere in the near field while on the go.

A device is a remote monitoring terminal 55 such as a computer connected to the Internet by streaming the video signal received from the small wireless camera (B device) in the binary CDMA wireless communication method to the Internet network and streaming in the form of packet data. Remote monitoring from your PC (e.g. your PC) and use the Home Security function built into the compact wireless camera to activate the alarm, record the screen or operate the door, or wirelessly You can also call a security company.

2. B device

In the present invention, a Post PC (eg PDA, smart phone, Web Pad, etc.) with or without a camera, a microphone and a speaker, a small wireless camera that can incorporate various sensor signal detection functions and door opening and closing functions A " mobile device " such as " B device &quot;

The B device 200 can be configured in the form of various functions. Device B of FIG. 1B is a wireless camera 83 of a small, portable (eg, size of a wireless cell phone, wireless PDA, etc.) that can have a self-charging large capacity battery (eg, 1350mAh, 1700mAh, 2200mAh, 3300mAh, etc.). It may be provided with a speaker and a microphone, and one or several scenes (for example, a camera) input through the above cameras (for example, one or more) wherever the user's PC 55 is located on the Internet. 1, Camera 2, ..., Camera N) can be monitored simultaneously or selectively, and also the camera can pan, tilt, zoom, tilt, zoom, There can be adjustment functions such as scene recording, taking a picture, and so on, which can be adjusted as desired on the Internet.

On the other hand, when the B device 200 and the A device 100 operate to form a call path, the B device can perform not only a function of a wireless telephone but also a function of a wireless video telephone. There is no need to purchase it separately, and it can also provide the functionality of an expensive cordless phone (CLP) in the home as a means of cheap and uninterrupted calls.

FIG. 1C shows a B device that performs a wireless telephone function between the A device and a B device. In the case of making a cheap B device, only a wireless telephone / camera 89 and a small (eg 1.6 / 1.8 / 2.0 inch) indicator 91 (eg TFT-LCD, organic EL, etc.) are not provided. It only has a radio function. Specifically, using the call button 92 and the phone number button 93 of the B device 90 can use only a wireless telephone and a radio (using the other party ID) function, so that a wireless voice call with the other party is possible. . The other party can be the other B devices centered on some A device, and the B devices centered on the A device in a distant place (for example, between the US and Korea) connected to the Internet.

And because all B devices can be given unique IDs (eg up to 64 IDs of 2), they can communicate with each other without any interference.

Another application of the B device according to the present invention is to fully perform the video phone function in the home. For example, if one B device has a wireless camera, a speaker and a microphone, and the other B device has a wireless videophone / radio, you can observe visitors outside the door between the two B devices. The door can be opened and closed through the device, and the desired scene can be recorded. It is also possible to transmit the recorded scene on the Internet through the A device. What's more, Binary CDMA wireless modules are installed in home appliances and home network target devices (various sensors, meter readers, water and gas valves, etc.) to enable remote meter reading, home securiy and home automation from anywhere on the Internet or via the B device. The functionality can be implemented.

As shown in FIG. 1C and FIG. 1D, the B device 200 has various functions of buttons and an external interface 909. If the user wants to make a phone call only, the call button 92 and the phone number button 93 of the B device are provided. Simply enter the phone number you want and you can talk to the other party in a digital wireless phone format. This is because the wireless data transmission and reception by the binary CDMA wireless transmission and reception unit 110 and 210 is possible between the B device 200 and the A device 100, and the wired telephone function unit of the A device 100 ( Through 60), a call path is formed with the wired telephone function unit 60 of the counterpart A device 100, thereby enabling a wireless phone call through the counterpart B device and the PSTN network.

Internal call button 92 and phone number button 93 communicate with device A 100 wirelessly using Binary CDMA wireless method, and the phone function part of the other device A through the phone function unit 60 of device A. By establishing a communication path with the 60, it is possible to perform a wireless telephone call through the other party's B device and the PSTN network.

In FIG. 2B and FIG. 11, all the A devices obtain Internet address information including a floating (or fixed) IP address from an ISP operator through the network connection unit 130 by the operating program when the power is turned on, and store the information in the memory unit 150. It waits for the ring tone to arrive from the telephone station. At this time, the other party's terminal device is hooked off (for example, the IP button 50 of the other party A device is pressed or the handset of the general wired / wireless telephone 58 is heard), and then the called number is pressed. Or, if the called number is pressed by a general mobile phone or (wireless telephone function) B device and a ringing tone arrives to my A device by dialing (that is, when a call comes from the other party or outside), The MCU 40 of the A device operates the ring detector 66 to receive a ring signal, and the hook detector 43 to operate the hook line to turn off the telephone line. At this time, the other device A sends a dial tone of a specific pattern immediately after confirming that the line is connected.If my device A receives additional dial tone of this specific pattern, exchange the Internet address information. Receive) is recognized as a signal to switch the line selection switch 45 to the PSTN modem function unit 70 side only, without switching the line selection switch 45 to the general telephone (58) side and the data communication path with the other PSTN modem function unit 70 After forming and receiving the Internet address information of the other party and stored in the memory unit 150, and sends its own Internet address information to the other party, when the ACK signal indicating that received from the other party immediately comes up (Hook On), immediately If not, wait for a certain time (for example, 0.5 seconds) for the ACK signal or the No Receive signal that has not been received. If the ACK signal or the No Receive signal still does not come, forcibly cut the line. If it receives No Receive signal, it transmits its own Internet address information and waits for ACK signal. If it receives ACK, it disconnects the telephone line. Repeat the above process.

If the dial tone of the specific pattern is not received after the hook off state, it is recognized as a general call and the ring tone is sent to the general phone 58 and the B device of the wireless telephone function. When the user of the handset (Hook Off), the line selection switch 45 is switched to the general telephone 58 to make a voice call. At this time, when the B device of the radiotelephone function first picks up the handset, it does not switch the line selection switch 45 toward the general telephone 58, but instead of the binary-CDMA wireless call path (telephone transformer 73 → ADPCM codec) 76) → Binary-CDMA modem (111) → TDMA RF module (112) → Antenna (105)}, and by switching the line selection switch (45) to pass through, B device and voice call path of wireless telephone function are formed. Be sure to If the device B or the landline user does not hook off for a certain period of time (after sending a voice prompt saying "I am absent"), the line is forcibly cut.

If a call request from the device B (for example, press the called number using the phone number button 84 and then press the call button 85) is detected by the Binary CDMA radio transmitter / receiver 110 of the device A, the device A MCU 40 finds the telephone number from the received radio signal and passes the DTMF generator 69, DTMF Amp 68, Matching Circuit 48, line selection switch 45, etc. Send the. Next, when the line connection is established by the telephone exchange, a call is made with the counterpart B device or the general telephone 58. When the call is terminated with each other and the MCU 40 detects the hook off, the telephone line loop is disconnected.

The B device can add various functions, so it can be varied from low-cost low-cost products to high-performance high-end products. For example, if the camera 89 and the small display device 91 are added to the basic function of the B device (wireless phone function), free wireless / telephone call and the recording and transmission of the desired scene are possible between the B devices. In addition to video calls, it is possible to record or transmit desired scenes. If you add even more functionality to device B, for example, optical zoom color rotation (e.g. 180 degrees, 270 degrees, etc.), camera 901, keyboard 903, small (3.5 inches, 4 inches, 5 inches, etc.) Color TFT-LCD (902), Wired LAN Function (905), High Capacity HDD (906) of 1.8 inches or less, Large Capacity Battery (907), Various Functions (909) (e.g. Video Recording / Playback, MP3 Audio, Stop) If you add screen recording, voice recording, USB interface, audio / video input / output, terrestrial / satellite receiving TV, etc., you can use the digital camcorder, digital camera, PDA, Web Pad, external HDD, etc. It can be easily enjoyed by the integrated form of the complex function at a price, and it plays a great role as a multimedia device that can carry, call, take pictures, record, exchange data, and watch terrestrial / satellite TVs anytime, anywhere. You can do it.

3 illustrates one embodiment of a B device configuration in accordance with the present invention that may be used in the system of FIG. The B device 200 includes a camera unit 265 capable of acquiring the current situation, a voice input / output unit 260 capable of acquiring audio from the outside or outputting an internal audio, and compressing / restored the acquired video and audio. A / V codec unit 215, Binary CDMA wireless transmission and reception unit 210 for wirelessly transmitting and receiving compressed video and audio, Screen display unit 220 of multimedia data, Key input unit by the user (84, 85, 86, 92) , 93, 270, 903, external interface units 280, 905, 909, and a controller 230 that controls all of them, a memory unit 240 having a function such as a system memory and a buffer, and a power supply unit 290. It is made to include.

Binary CDMA wireless transmission and reception unit 210 can select and use the binary CDMA modem method according to the type of multimedia data (for example, PW-CDMA at low speed, CS-CDMA at high speed, etc.), which is currently generalized for RF chips. Since a low-cost TDMA RF module can be used, carrier data can be transmitted using the TDMA RF module.

The A / V codec unit 215 of the B device of the present invention is provided with a hardware function that can photograph MJPEG still images in megapixel units (eg, 2.4M, 4.2M, etc.) as a means for accurately identifying the situation of the site. It is desirable to.

The camera unit 265 includes a small size of 180 degrees, 270 degrees, etc. having an optical zoom (for example, 2 times, 4 times, 10 times, etc.) to perform a combination of functions of a digital camera and a digital camcorder. Preferably, the rotatable camera 901 is mounted.

In the present invention, the operation of the apparatus B 200 will be described as an example. The image signals of the YUV (luminance component Y and the color difference signal components Cb and Cr) input from the CCD camera unit 256 are varied in size (for example, 320X240). 640X480, etc., input speed (e.g. 30 frames per second), video format (e.g. 4: 2: 2), and converted to video format (A / V) codec unit 215 into compressed format (e.g. 4: 2: 0), and then compress the image data according to the standard video compression technology (e.g., H.264 method) so that the compressed video data is not passed through the CPU by the DMA device of the memory unit 240 to reduce the load on the CPU. Since it is directly transferred to the SDRAM memory, the captured image can be brought to the memory in real time. Whenever an image of one frame comes in, an interrupt is requested to the controller 230 and the DMA is interrupted by an interrupt service routine. Is activated and several frames are stored in the SDRAM memory.

The memory unit 240 is composed of an SDRAM and a flash memory (ROM, etc.). The SDRAM is allocated with an image / audio data, program data, a stack, a heap, and the like, and a B device is provided in the flash memory. Stores programs and settings that run when booted.

The A / V codec unit 120 and 215 used in the A device and the B device of the present invention ensure high efficiency compression and good quality of the data, and minimize the delay time of data arrival by the transmission distance between the transmitting and receiving terminals. In order to achieve this, it is preferable that the video codec and the audio codec take the form of one chip (for example, NW901, NW902, etc. of Divio Corp.) integrated in a single chip. In addition, a software codec (eg ByteroSoft, Thin Multimedia's TCM, etc.) can reduce CPU load and reduce power consumption.

There are many types of video and audio codecs. That is, video includes MPEG-4, MPEG-2, H.263, H.264, Wavelet, and the like, and audio includes ADPCM (G.726), G.723.1, and AAC.

If G.726 (ADPCM) method is used in the selection of audio codec, it is ADPCM type compression method, so there is a large amount of data, but the processing is simple and does not affect image compression. In general, the continuity of the audio (minimization of the delay time) becomes more important than the continuity of the image in transmitting the video and the audio simultaneously.

When video and audio are transmitted to a network through the same output port, the transmission of audio data may be affected by a relatively large amount of data. Therefore, using different ports for video and audio can minimize the interruption of audio.

In the present invention, the audio codec uses AAC audio that can obtain 30 to 50% better efficiency than MP3, or uses voice codec such as G.723.1, ADPCM, and the video codec has good image compression efficiency. It is preferable to use MPEG-4 codec and H.264 codec with good image quality.

In general, the bandwidth required for transmitting voice and audio data is 64 Kbps for uncompressed PCM, 13 Kbps for QCELP, 8 Kbps for G.726 (CS-ACELP), and 4.8 Kbps for VoIP. 5.6Kbps), Audio data is 352.8Kbps, MP3 streaming audio is 128Kbps.

The uncompressed SDTV level required for transmitting video data is 221 Mbps, the uncompressed HDTV is 1.3 Gbps, the compressed SDTV (MPEG-2) is 4 Mbps to 8 Mbps, and the compressed HDTV ( MPEG-2) is 19.4 Mbps, MPEG-1 is 1.5 Mbps, and compressed SDTV level H.264 requires 1 Mbps.

The memory unit 240 of the device B may be a flash memory, an SDRAM memory, or an ultra-small (eg 1.8 inch or less) HDD 906 (eg, Toshiba) currently commercially available for use for storing a large amount of data. (TOSHIBA's 1.8-inch HDDs such as MK1003GAL, MK2003GAH, etc.) and the USB2.0 interface as a means for high-speed transfer of data stored in this large-capacity memory or flash memory to an external device. It is desirable to be able to support the external interface 280. In order to ensure long-term use, it is preferable to use a large-capacity rechargeable battery 907 (eg, lithium or polymer batteries such as Samsung SDI, Sanyo, Kokam Engineering, etc.). It is also desirable to have a wired LAN 905 port so that wired Internet functionality is always retained by default.

As described above, the B device of the present invention may be in the form of a post PC (PDA, SmartPhone, WebPad, Tablet PC, etc.) having a camera as a base while selectively having a speaker and a microphone. It could also be in form. This B device contains video and audio compression / restore codec in hardware or software form.In the form of card in which Binary CDMA wireless communication module is inserted in on-board form or slot (eg PCMCIA) or software module function It is preferable to be embedded in the form.

3. Multimedia data wireless transmission and reception system

FIG. 1A is a block diagram of a system (hereinafter, simply referred to as a "system") capable of transmitting and receiving multimedia data freely within a predetermined short range or over the Internet using Binary CDMA wireless technology. In FIG. 1A, the A devices 100 are connected to the Internet and the PSTN network, and they are wirelessly connected to the B devices 200. A devices 100 are also connected to video / audio devices 81 and to other peripheral devices 56, 58, 59, and 80. A plurality of user PCs 55 are connected to the internet network.

Hereinafter, the operation principle of the present invention will be described in detail with reference to FIGS. 1A and 8.

A variety of wireless data transmission techniques used in the present invention can be used. For example, when using PW (Pulse Width) / CDMA technology, this technology provides transmission speeds up to 800Kbps, but there is a disadvantage in mutual interference noise, and current PW (Pulse Width) / CDMA modem chips have the above disadvantage. It must be taken and used. However, unlike Bluetooth, orthogonal hopping is performed, so that there is no collision or interference between users.

Other techniques include a code select (CS) / CDMA scheme, a constant amplitude coded (CA) -CS / CDMA scheme, and the like, and any of these may be used to implement the system of the present invention.

In the present invention, the B device 200 obtains a video signal in the form of a digital YUV (luminance component Y and color difference signal components Cb and Cr) input from the CCD camera unit 256 (Capture), and then the video sound (A / V). The codec unit 215 converts the image into QCIF, CIF, or VGA format, and performs a compression process according to an image standard compression technique (eg, MJPEG, MPEG-4, etc.). The compressed digital image is sent to the memory unit 240, and the audio signal input by the audio input / output unit 260 is compressed by the audio codec function of the video and audio (A / V) codec unit 215. The compressed video and audio data are multiplexed by the A / V codec unit 215 or the control unit 230 in consideration of synchronization, and are modulated by the binary CDMA radio transmitter / receiver 210 and loaded on a carrier to another B device 200. It is spread.

In another B apparatus 200, the carrier data received through the antenna 205 is demodulated by the binary CDMA radio transceiver 210, and the video / audio signal is demultiplexed by the A / V codec unit 215. And separated into video and audio compression data. The separated image compressed data is transferred to the image sound (A / V) codec unit 215 through the memory unit 240 to restore the image to the digital YUV form. The recovered data is displayed through the TFT-LCD screen displays 91, 220, and 902, or is output as a general TV signal through the external interfaces 280, 909. The audio signal is output to the speaker 88 through an audio amplifier inside through the image and audio codec unit 215.

In the A device 100, the carrier from the B device 200 is demodulated in the Binary CDMA wireless transmitter / receiver 110, and video and audio data are transmitted to the Internet network connection unit 130 in the form of Internet packet bit-stream, where It is processed into an internet signal [mapping compressed data to RTP packet for real time transmission {Packetization (RTP / RTCP)}] and delivered to another A device 100 or user PC 55 via the Internet. When transmitted to the other A device 100, the received RTP packet is analyzed by the video / audio codec unit 120, extracted compressed data {Unpacketization (RTP / RTCP)}, and then restored (Decompress). ) And output the decoded data to the external video / audio input / output units 160 and 81 to be reproduced by an output device (monitor) or transmitted to the binary CDMA wireless transmission / reception unit 110 in a compressed form. Is loaded on the carrier and radiated into the air, the B device 200 is Received, it is possible to watch by restoring the video and audio data.

Since the service of the present invention is in real-time video and voice traffic transmission on the Internet, it is preferable to deliver video and audio packets using Internet protocols such as Real Time Transport Protocol (RTP) and Real Time Control Protocol (RTCP).

In addition, the present invention is based on the MPEG-4 standard technology, which provides a function that allows a user to easily access and edit various multimedia information such as graphic composite video as well as natural video as the latest technology of multimedia encoding. In the MPEG-4 video compression, various profiles are defined, and broadly, four profiles are defined: main, core, simple scalable, and simple. Each profile is divided into various types according to the screen size and the target bit rate. For example, in the Simple Profile, the image size is CIF (Common Intermediate Format: 320 x 240), and the target bit rate is 64 Kbps to 384 Kbps. Therefore, the present invention encodes video and audio in real time into MPEG-4 video and G.723.1 or AAC audio, respectively, and transmits multimedia information through a network based on a standard related to MPEG-4 system. And client system.

10A illustrates one embodiment of a software architecture for MPEG-4 video data transmission over the Internet. The structure is broadly divided into an MPEG-4 video processing module for processing a video stream in a device, and a transmission module for connecting to a network and transmitting and receiving data. Detailed functions of each module are as follows.

The user interface 301 provides a menu environment and a video screen window that are easy for the user to operate, and the MPEG-4 video processing module 302 acquires a scene in real time, compresses it through an MPEG-4 codec, and then compresses the compressed data. To perform an RTP packet and vice versa, and the transmission module 303 is a module for appropriately processing video in a device to efficiently transmit MPEG-4 video on a network. On the other hand, the receiving device is responsible for processing video data received from the Internet to be played in the device. As a separate function in this module, Video Capture 304 delivers the natural image received from the image acquisition device to the coder, and accesses the device driver of the camera to get the captured image frame and sets the bit rate ( Example: 30 frames per second) delivers data to the MPEG-4 video codec. The video renderer 305 provides a function of receiving a decoded digital image (video data) from a decoder to display an image.

The MPEG-4 Codec 306 encodes and decodes a scene, encodes video data received from the Video Capture 304, and transfers the encoded video data to the RTP Send Payload Handler 307, and also the RTP Receive Payload Handler. The video received from 308 is decoded and transmitted to the video renderer 305.

The RTP Send Payload Handler 307 converts the encoded (compressed) data received from the codec into RTP packets (converts the data corresponding to the payload of the RTP packet), and the RTP Receive Payload Handler 308 stores data on the Internet. It receives and converts the data so that it can be decoded (converted into a data form that can be processed by the decompressor) and delivers it to the codec. The transmission module 303 is responsible for the transmission of the video stream. The uppermost protocol for transmission uses RTP suitable for transmission of multimedia data requiring real time. The RTP packet is delivered to UDP / IP 401 via WinSock 309.

The RTP sending interface 402 serves to cause the RTP Library 403 to transmit data transmitted from the RTP Send Payload Handler 307 over the network. That is, the RTP payload is taken from the queue and the packet transmission function in the RTP library 403 is called to transfer the data.

The RTP Send Payload Handler 307 stores this data in a queue when the RTP Payload is completed, and generates and sends an event to the RTP Sending Interface.

The RTP receiving interface 404 allows the RTP Library 403 to receive data (RTP packets) from the network and delivers it to the RTP Receive Payload Handler 308. The RTP Library 403 is a library for transmitting and receiving data, which satisfies the RTP protocol.

10B shows a hierarchical data structure of the protocol stack used in the device. The MPEG-4 video elementary stream in the compression layer carries data through the RTP / UDP / IP protocol stack, which is sent back to the Internet. The receiver side processes the received video stream and generates it.

In general, the design and the mold of the product development have a significant influence on the development schedule and the selling price. In another embodiment of the present invention, a method of realizing and commercializing a device B in a short time at low cost is proposed.

Even if the circuit of the B device is completed, it takes a lot of time and money to develop and manufacture a mechanism that can package the circuit, so it requires considerable time until the product is released. Therefore, in order to release the product early, reduce the time and cost to launch and lower the product cost, the wireless phones, mobile phones (mobile phones or cellular phones) (eg GSM / CDMA mobile phones) or personal mobile phones currently sold in the market A case (bag) (hereinafter referred to as a "case") of a portable terminal (PDA), a smartphone, a web pad, or the like (hereinafter referred to as a "mobile / mobile terminal") 1001 (1000). The function of the B device (hereinafter referred to as "B device function module") 1002 is integrated and built-in. The case 1000 of the portable / mobile terminal integrated with the functions of the B device as described above is a portable / mobile terminal 1001 having various electronic / information / communication / electric multimedia complex functions in addition to the original role of the case. It can be said that the case (bag) 1000.

The method of providing a case 1000 of an integrated portable / mobile terminal 1001 including such a composite function generally includes any of the aforementioned portable / mobile terminals 1001 for charging its own battery (hereinafter referred to as “mobile”). Battery (1003), and the interface function unit (1004) is made to carry the power of the portable battery (1003) to the B device function module (1002) in common. The B device function module 1002 is built in and inserted into the case 1000 to operate by receiving power from the battery 1003.

The mobile / mobile terminal (1001) case 1000 currently on the market is usually made of (artificial / natural) leather or vinyl or plastic or cloth or other kinds of materials, furthermore, such a case (1000) At the time of manufacture, a module 1002 capable of functioning as a B device is included in a predetermined region of the case 1000. When the case is flexible, it is preferable to package the B device function module 1002 in a durable plastic material so that the B device function module 1002 is protected from external impact.

An example of the B device function module 1002 mounted on the case 1000 of the portable / mobile terminal 1001 may include a short range wireless voice call device 1002. Emergency lights such as FM radio (1012), radio pager, high-brightness LED flashlight (1010), laser pointer, thermometer, thermometer, USB flash memory (1011), emergency alarm device, MP3 player, voice recorder, Wireless door keys, etc. can be integrated in various ways, and even small digital cameras, small digital camcorders, and other functions may be applied.

12A and 12B, for example, the portable / mobile terminal 1001 is a mobile phone, for example, a function such as an FM radio 1012, a USB flash memory 1011, and a high-brightness LED flashlight 1010. In the case of the built-in 1000, the method of implementing the interface function unit 1004 may vary depending on the charging method of the portable battery 1003.

The charging method of the domestic mobile phone varies according to the model of the mobile phone 1001. Older models have a lot of DTC (Desktop Travel Charger) method with a charging terminal on the back of the battery, and the B device function module 1002 is connected from the charging terminal on the back. The interface function 1004 can be implemented to receive power. Also, in the case of the TTA standard 24pin connector in the domestic CDMA mobile phone and the 18pin connection connector in the European GSM mobile phone and the domestic old mobile phone, There is an 18-pin or 24-pin connector 1005 that plugs (inserts) an external connector into the bottom, and in general, when the cellular phone is first purchased, the connector 1005 is blocked with a rubber rib. The interface function unit 1004 can be plugged into this connection portion 1005 so that the B device function module 1002 receives power from the cellular phone battery to operate.

Furthermore, if the data pins of the connection part 1005 are used together with the power pins, the interface function part 1004 is divided into a communication signal interface part 1006 and a power supply interface part 1007, and these two parts are divided into the mobile phone case 1000. ) Together with the mobile phone case 1000, and the power supply interface unit 1007 and the power supply circuit unit 1008 and FM radio for the circuit of the same function as the high-brightness LED flashlight 1010 The regulator circuit unit 1009 for supplying power to a circuit having the same function as the operation 1012 may be implemented.

In one embodiment of this method, when the mobile phone 1001 is pushed into the case 1000, the male and female connectors of the 18-24 pin connection of the mobile phone are closely attached to each other so that the communication terminal and the power terminal of the connector are in this state. To make the interface function 1004 to utilize. Here, the direct power supply circuit unit 1008 is a function unit that allows the power of the battery 1003 of the mobile phone 1001 to be used as it is. It is a function part to make adjustment and use.

The communication signal interface unit 1006 is a functional unit that allows the B device function module 1002 to utilize a communication (data) signal of the communication terminal in the connector 1005 of the cellular phone 1001. Therefore, the B device function module 1002 is divided into one of the direct power usage function module 1002 and the one of the indirect power usage function module 1002.

In the present invention in FIG. 12B, the portable USB Flash memory device 1011, which is being used in the form of replacing the Floppy Disk, is expanded to the B device function module 1002 these days. If the rat is provided in the clip portion of the form (Clip) and the role of the clip at the same time with the role of carrying a portable terminal 1001 with the case 1000 without the need to carry separately it will be more convenient. The USB Flash Memory 1011 has a locking jaw male 1016 and a push button 1015 at a portion of the handle 1014 that is used as a cover protecting the USB connector 1013. If the handle 1017 is caught, the handle 1014 does not pull out even when it is pulled out, and the push button 1015 must be pressed to release the handle, and the case 1000 has a certain angle (eg, 90 degrees, 270 degrees, etc.). There is a rotating shaft (1018) that can be rotated to rotate the USB connector 1013 by rotating the USB Flash memory 1011 at an angle (90 degrees) that is easy to insert into a USB port of a general PC (desktop, laptop, etc.). In one embodiment, a structure for insertion is shown.

Currently, FM Tuner module that can implement FM radio function (1012) is on sale, and there are modules produced by companies such as photovoltaic, photonic, and Seobong Precision. Among these modules, Philips Semiconductors Some chips are made around TEA5757 / 59. It is compact and thin in size, so it is very suitable to be applied as extension function of B device function module.

Referring to the practical application example in Figure 10c, in this case, only one-to-one (one-to-one) or 1: N (A device: B device) communication between the remote device A 100 and B device 200 It is possible. That is, multicasting (a mechanism for multiple senders and multiple receivers to communicate with each other) is impossible without dividing the channel (for example, by dividing the channel by TDMA) and uni-casting. It is only possible for one sender to send data to one receiver and for A device to broadcast to device B in its group (one sender sends data to all receivers in the same network).

The B device 200 can be used to watch a video / video device 81 (camcorder, TV, DVD, V-CD, VTR, MP3, etc.) in the home from a remote location. In this case, two A devices (one remotely and one indoor) must be connected to the Internet 400, and the output device of the video / audio machine must be connected to the indoor A device 100. . Under these conditions, you can connect an audio-visual device (e.g., external video / audio input terminal of B device) to the video / audio output port of remote A device to watch video / audio. You can watch video / audio wirelessly. In particular, when the external video / audio input terminal of the B device is connected to the video / audio output port of the A device, video and audio can be recorded.

As another example, in FIG. 10D, digital images from a plurality of wireless cameras 83 are transmitted and monitored in real time through the Internet 400 in the high-speed information communication network or the Internet 400 based on a LAN or WAN. Web server function can be built in, and the function of remote control management of the home automation / home network control target device 82 can be built in, so that cyber home automation including home security is possible. In addition, the crime prevention situation can be monitored and controlled on the Internet using a dedicated viewer.

As such, the present invention may be variously modified and may take various forms, and only the specific embodiments thereof are described in the detailed description of the present invention. It is to be understood, however, that the present invention is not limited to the specific forms mentioned in the detailed description of the invention, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. It should be understood to do.

The effects expected from the present invention are as follows:

First, the B device having a display device (e.g., TFT-LCD, STN-LCD, organic EL, etc.) and a speaker by Binary CDMA wireless technology by receiving the output signal of the video / audio device in the home as the A device of the present invention. In this case, the user can enjoy a movie or TV while moving wirelessly with the B device without mutual interference wherever he is within a predetermined range near the house.

Secondly, a B device equipped with a speaker and a microphone can be used while moving a wired telephone wirelessly from a short distance through a wired telephone function provided in the A device.

Third, if the signal is transmitted from the other B device (camera) of the front door while watching a movie with the B device (PDA), you can open and close the front door, and check the phone by Binary CDMA wireless method even if a call is received from the outside. You can do

Fourth, the B device has a display device or a door phone function and a crime prevention function, so it can move wirelessly from the entrance camera (other B device) in the bedroom (from anywhere in the house such as the bathroom or kitchen) to wirelessly monitor the current situation. Can check the door can be opened and closed, and can perform a security function.

Fifth, B devices in the form of Post PCs can be voiced or video call within a short distance.

Sixth, in the present invention, the video and audio compression / restoration codec is used for the two-way transmission and reception of video and audio over the Internet through device A and device B, so that voice or video calls can be made free of charge. Surveillance is possible.

Seventh, the system of the present invention uses Binary CDMA wireless modem technology (e.g. PW / CDMA, MP / CDMA, CS / CDMA, CA-CS / CDMA, etc.) and according to the type of multimedia data (e.g. video, audio The user operation program is running to secure the necessary transmission bandwidth to perform smooth communication. It is possible to perform free multimedia data communication whenever and wherever free of charge, wherever there is an internet network.

Eighth, the use of the system of the present invention allows free telephone calls and video calls of the conventional paid method, and the construction of Wireless Home Networking using Binary CDMA technology enables home security. It is possible.

Ninth, if the other device A is connected to the Internet, the user can receive and watch signals inputted from the other device B or the video / audio device through the Internet free of charge or wirelessly communicate with the other device B via the Internet for free. Video calls are possible. In other words, you can enjoy the functions of a regular cordless phone without any interference.

Tenth, the present invention can be manufactured at low cost by simplifying the configuration by removing the camera unit, the handset unit, the key input unit and the expensive color display unit in the main body of the conventional video telephone.

Eleventh, since the video or audio signal photographed by one or more B devices is propagated to the Internet through the A device, it is possible to remotely observe the inside and outside of one's home anywhere in the world where the Internet is connected. In addition, it is possible to control the home network or home security devices inside and outside the home through the Internet.

The twelfth aspect of the present invention is that the B device can be configured in such a form that only the B device can receive various sensor signals for Home Security without a camera and transmit the same to the A device within a short distance in a binary CDMA wireless manner. Landline allows you to call a homeowner for an emergency or call a security company to alert you of a dangerous situation.

Thirteenth, according to the present invention, a user wirelessly receives a visitor image photographed by a B device (small wireless camera) through another Binary CDMA wireless communication method to another B device (PDA) to check the image content and to open or close a door. You can save the screen.

Fourteenth, according to the present invention, since a B device (eg PDA) equipped with a speaker, a microphone, and an indicator (e.g. LCD) can wirelessly communicate with each other at a short distance without an A device, a conventional radio function as well as a video radio function are provided. It is also possible.

Fifteenth, according to the present invention, the output signal of the video / audio machine in the living room can be viewed through the B device in the room, on the other hand, even in the bathroom, the bedroom, and the B device has the home network, home security, and home automation functions. Watching TV signals from device A on device B, and even if the doorbell is pressed by an external customer outside the front door, watch the video signal transmitted by device B installed on the front door Can open the front door.

Claims (51)

In conjunction with a mobile terminal equipped with a microphone, a speaker, various sensor signal sensing means, a door opening and closing means, and a wireless camera, the mobile terminal freely transmits multimedia data within a short range or over the Internet using a wireless communication technology. In the wired / wireless conversion repeater, which allows to send and receive and has a wired telephone function, an internet connection function and a PSTN modem function, A wireless transmission / reception unit for digitally demodulating and demodulating multimedia data transmitted and received through an end portion (antenna portion) through a wireless communication method with the mobile terminal; A video / audio codec unit for compressing / restoring video and audio data acquired from the radio transceiver; A network connection unit providing an interface means for transmitting and receiving the compressed / restored multimedia data through the Internet; A memory unit for temporarily storing the compressed / restored video and audio data; An A / V input / output / control unit that provides input and output interface means and control means for external video / audio signals; A power supply unit for supplying predetermined power to each component of the wired / wireless conversion repeater; If you press the telephone number of the other party's wire / wireless conversion repeater to select the other party's wire / wireless conversion repeater from the other party's wired / wireless conversion repeater, the signal generated from the dial circuit is sent to the telephone exchange through the telephone line, It transmits a predetermined incoming signal, and generates a call signal by reproducing the incoming signal through the incoming signal unit, and comprises a PSTN modem function unit and a telephone function unit. The Internet address information of the wired / wireless conversion repeater is obtained from various other wired / wireless conversion repeaters. A telephone function IP acquisition unit that receives the PSTN modem function unit and a telephone line and provides its own IP address to various other wired / wireless conversion repeaters through the PSTN modem function unit and the telephone line; And And a control unit for controlling and managing all the components of the wired / wireless conversion repeater. delete The PSTN modem function unit of claim 1, wherein the PSTN modem function unit includes a CPU, a memory, a modem chip, a data access arrangement (DAA), an interface circuit, and a microprocessor (MCU), and the modem chip is a digital signal transmitted by the CPU. Modulates data into a telephone line signal or demodulates an analog signal from a telephone line into digital data. For this purpose, a tantalum capacitor with good frequency characteristics is used around the module chip, and the CPU and microprocessor (MCU) connect the telephone line to the PSTN modem. It transmits and receives the actual data and control data to and from the MPU part of the wired / wireless conversion repeater and controls the modem function. When a call is made, a high AC signal voltage is applied to the telephone line and the AC voltage is insulated by the DAA. If the modem detects and answers the call, the external telephone line Disconnected and connected to the modem chip, wherein the received analog data is demodulated and transmitted to the CPU for processing. 4. The control unit of claim 3, wherein the control unit comprises a CPU, MCU, and MPU unit, wherein the interrupt request of the network connection unit or the contents of an internal specific register of the network connection unit are executed using a timer interrupt. It reads periodically and informs whether or not data is flowing from the internet network, and transmits the compressed video and audio data to the internet network through the network connection using TCP / IP, UDP / IP, RTP, RTCP, and multiple users. A wired / wireless conversion repeater, characterized in that it supports simultaneous access. 5. The network connection unit according to claim 4, wherein the network connection unit transmits one of the demodulated voice, video signal, and data to the other wired / wireless conversion repeater using the Internet / Multimedia transmission protocol through an Ethernet LAN network. By transmitting the received data signal to the wireless transmitter and receiver, the wired / wireless conversion repeater can perform 1: 1 or 1: N communication with the user PC through the Internet, and 1: 1 or 1: Wired / wireless conversion repeater characterized by enabling 1: N communication. The method of claim 5, A / V input / output means for inputting and outputting audio and video signals from corresponding external video and audio devices so as to enjoy the opposite video or audio far apart from each other on the Internet; Integrated remote control means for integrating and controlling the external devices; USB recognition device for searching or transmitting / receiving desired data by accessing the camera from the outside to the wired / wireless conversion repeater or by connecting an external large capacity HDD / Flash memory to the camera and the external large capacity HDD / Flash memory on the Internet. It is made to include more And receiving and transmitting multimedia data from the mobile terminal by connecting to the internet network, or vice versa, transmitting the received multimedia data to the mobile terminal by connecting to the internet network. delete delete delete delete delete delete A mobile terminal for transmitting and receiving multimedia data within a predetermined short range or on the Internet through a wired / wireless conversion repeater defined by claims 1 and 3 to 6, A voice input unit for inputting voice data from the outside; A voice output unit for outputting voice data therein; A wireless camera unit having a sensor signal detection function and a door opening and closing function and acquiring surrounding image data; An image / audio codec unit for compressing and restoring image and audio data input through the audio input / output unit and the wireless camera unit and generating still images and moving images; A wireless transmission / reception unit for wirelessly transmitting / receiving video and audio data compressed / restored by the video / audio codec unit; A display device for displaying multimedia data; A key input unit for a user to input predetermined character data; The mobile terminal driver for remotely monitoring / security / meter reading; A peripheral unit connected to the mobile terminal; A memory unit configured to store image / audio data, program data, a stack, a heap, a program to be executed when the mobile terminal boots, and a plurality of setting values; And And a control unit which controls and manages each component in the mobile terminal as a whole. delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete In the operation method of the telephone function IP function acquisition part of the wire / wireless conversion repeater defined by Claims 1 and 3 which has a PSTN modem function part and a telephone function part, Calling the other party by pressing the IP button and the telephone button of the repeater while the wired / wireless conversion repeater is turned on; Turning off the hook switch after the originating wire / wireless conversion repeater obtains its Internet address information from the network connection unit (LAN card function unit); In response to the off operation, the exchange transmits a dial tone to the PSTN modem function of the calling party, and the calling party inputs (dials) the telephone number of the receiving wired / wireless repeater to the exchange; In response to the telephone number input, the exchange transmitting a ringing tone (ring back tone) to the calling station's PSTN modem function unit and simultaneously transmitting a ringing tone (ring tone) to the exchange close to the receiving side; When the receiver turns off the hook, the exchange close to the receiving side receiving the off signal sends a response signal to the exchange close to the originating party, and thereafter, becomes a line connection so that the transmission / reception side wired / wireless conversion repeaters call; When the calling party (in the PSTN modem function unit) sends its own Internet address information to the called party (in the PSTN modem function unit), the receiving party receives the calling party's Internet address information, stores it in memory, and sends it to the calling party's Internet address information. Sending a; Sending a signal indicating that the calling party has received the receiving Internet address information to the receiving party, and if the receiving party turns on the hook, the exchange close to the receiving party sends a termination signal (CB) to an exchange near the calling party; And When the calling party turns on the hook, the exchange close to the calling party sends a line disconnect signal CF to the exchange close to the receiving end, and the exchange close to the receiving side sends a recovery completion signal RRL to the exchange close to the calling party. Method comprising a telephone function IP acquisition unit of the wired / wireless conversion repeater. Receiving a telephone call by a modem in a state in which a high AC signal voltage is applied to the telephone line and the AC voltage is insulated by the DAA; The external telephone line is disconnected to the telephone and connected to the modem, and the received analog data is demodulated and transmitted to the CPU for processing; Power is applied to the wired / wireless conversion repeater defined in claims 1 and 3 to 6 so that the control unit receives a MAC address (physical address) and an IP address from a network connection unit (LAN card function unit). Obtaining Internet address information including a default gateway, a DHCP server, and DNS servers and storing the Internet address information in a specific space of the memory unit; When the user presses the IP button (which acts as a hook switch) of the wired / wireless conversion repeater, the wired / wireless change repeater forms a closed loop with the exchanger so that the current flows, and the exchange senses this current and dials the dial tone. Transmitting a signal through the speaker and inputting the other party's telephone number using the telephone number button; In response to the phone number input, the exchange sends a ringing tone to the other party's wired / wireless conversion repeater, and sends a ring back tone to the calling party's wired / wireless conversion repeater. Hooking off from the control unit of the wired / wireless conversion repeater (hook off), and a line is connected to transmit and receive data through a PSTN modem function unit in both wired and wireless conversion repeaters to transmit their Internet address information to the other wired / wireless conversion repeater; And When the user presses a call button on the mobile terminal using the mobile terminal defined by claim 13, the wired / wireless conversion repeater wirelessly receives the pressed signal and operates in the telephone function mode, and the wire / wireless conversion repeater switches the hook off signal. Break the external telephone line connected to the phone side and connect to the PSTN modem function unit, modulate the call signal data from the telephone number input signal transmitted wirelessly from the mobile terminal, send it to the other side, and modulate the analog signal from the other side and transmit it to the mobile terminal wirelessly. And making a PSTN wireless telephone call between the mobile terminals with the wired / wireless conversion repeater interposed therebetween, the method of operating the PSTN modem function unit of the wired / wireless conversion repeater. When the power is turned on in each of the plurality of wired / wireless conversion repeaters defined in claims 1 and 3 to 6, the Internet program obtains the Internet address information including the dynamic or fixed IP address from the ISP operator through the network connection unit by the operating program. Storing the memory in a memory unit and waiting for a ring tone to arrive from the telephone station; At this time, when the terminal device of the other party is hooked off, the called number is pressed or the called number is pressed by the mobile terminal defined by claim 13 having a general mobile phone or a wireless telephone function, and the call is made to the wired / wireless conversion repeater by dialing. When the signal (Ring Tone) arrives, the MCU of the wired / wireless conversion repeater operates the Ring Detector to receive a ringing signal (Ring Tone), by operating the Hook Detector to make the phone line Hook Off state; At this time, the other party's wired / wireless conversion repeater checks that the line is connected and immediately sends additional dial tone of a specific pattern.If my wired / wireless conversion repeater receives additional dial tone of this specific pattern, it recognizes it as a signal to exchange Internet address information. Switch the line selection switch to the PSTN modem function side, form a data communication path with the other PSTN modem function side, receive the other party's Internet address information, store it in the memory, and then send its Internet address information to the other side. ; If the ACK signal is received from the other party immediately, the phone hangs up immediately (Hook On) .If it does not come immediately, it waits for ACK signal or No Receive signal for not receiving for a certain time. Forcibly cutting; If receiving the No Receive signal, transmits its own Internet address information and waits for the ACK signal, and upon receiving the ACK signal, disconnects the telephone line; If the dial tone of the specific pattern is not additionally received after the hook off state, the telephone is recognized as a general call and the ring tone is sent to the general phone and the mobile terminal of the wireless telephone function. Hooking up the handset (Hook Off), by switching the line selection switch to a general telephone to make a voice call; At this time, if the mobile terminal with the wireless telephone function first picks up the handset, instead of switching the line selection switch toward the general telephone, the line selection switch is switched to the wireless telephone path to establish and pass the wireless telephone function. Allowing a to be formed; If the mobile terminal or the landline user does not hook off for a predetermined time, forcibly cutting the line after sending a "missing" announcement voice message; When the call request signal from the mobile terminal is detected by the wireless transmitter / receiver of the wired / wireless conversion repeater, the MCU of the wired / wireless conversion repeater finds the telephone number from the received wireless signal and passes through the DTMF generator, DTMF Amp, Matching Circuit, and line selection switch. Transmitting the called number to the telephone station through; When the line connection is established by the exchange of the telephone station, making a call with the opposite mobile terminal or a general telephone; And When the call is terminated with each other and the MCU detects the hook off, the telephone line loop is disconnected. delete delete

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