최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0657398 (2003-09-08) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 106 인용 특허 : 463 |
The present invention is generally directed to a system and method for communicating between a personal data access device and a remote communication unit. In accordance with one aspect of the invention, a device, electrically connected for communication with a public switched telephone network (PST
The present invention is generally directed to a system and method for communicating between a personal data access device and a remote communication unit. In accordance with one aspect of the invention, a device, electrically connected for communication with a public switched telephone network (PSTN), is provided for facilitating communications between a personal data access device and a remote communication unit disposed in communication with the PSTN. The device includes a radio frequency (RF) transceiver configured for communication with a remote RF transceiver associated with the personal data access device, via an RF link, and a controller, responsive to communications received from the remote RF transceiver to maintain two-way communication between the personal data access device and the remote communication unit via the PSTN and the RF link.
What is claimed is: 1. A system for communicating with a remote communication unit via a public switched telephone network (PSTN), comprising: a personal data access device executing a program that is to communicate with the remote communication unit via the PSTN; a first radio frequency (RF) trans
What is claimed is: 1. A system for communicating with a remote communication unit via a public switched telephone network (PSTN), comprising: a personal data access device executing a program that is to communicate with the remote communication unit via the PSTN; a first radio frequency (RF) transceiver associated with the personal data access device and in communication with the program, wherein the first RF transceiver is controlled by the program; a public, pay-type telephone, electrically connected for communication over the PSTN; a second RF transceiver interfaced with the telephone, the second RF transceiver configured for communication, via an RF link, with the first RF transceiver; and a controller interfaced with the telephone, responsive to communications received from the first RF transceiver to communicate over a data communication link via the PSTN to the remote communication unit designated by the personal data access device, the controller being configured to allow data communications over the PSTN, the controller and the program being further configured to maintain two-way communication between the personal data access device and the remote communication unit via the PSTN and the RF link, and the controller being further configured to terminate the data communication link over the PSTN to the remote communication unit designated by the personal data access device, wherein responsive to receiving from the first RF transceiver a termination communication that originated from the program, the controller terminates the data communication link. 2. The system as defined in claim 1, wherein the personal data access device is a device selected from the group consisting of: a desktop computer, a laptop computer, a hand-held computing device, a portable handset, and a palm-corder. 3. The system as defined in claim 2, wherein the portable handset digitizes an analog voice signal into data packets, and the public, pay-type telephone relays the data packets to the remote communication unit. 4. The system as defined in claim 1, further including: a second public, pay-type telephone, electrically connected for communication over the PSTN; a third RF transceiver interfaced with the second telephone, the third RF transceiver configured for communication, via an RF link, with the first RF transceiver; and circuitry associated with the first RF transceiver to monitor a signal link strength of a current communication with the second RF transceiver and the signal link strength of the third RF transceiver; wherein the first RF transceiver is configured to transfer the current communication to the third RF transceiver based on the signal link strength. 5. The system as defined in claim 1, wherein the controller and second RF transceiver are interfaced to the public, pay-type telephone through an interface selected from the group consisting of: a wired and a wireless connection. 6. The system as defined in claim 1, wherein the controller and second RF transceiver are located outside the pay-phone in a separate module. 7. The system as defined in claim 1, wherein the public, pay-type telephone includes a digital subscriber line (DSL) modem for communicating data between the PSTN and the second RF transceiver. 8. The system as defined in claim 1, wherein the controller is further configured to allow simultaneous voice and data communication over the PSTN. 9. A system for communicating with a remote communication unit via a public switched telephone network (PSTN), comprising: a personal data access device having a first radio frequency (RF) transceiver; a communication device for communication over the PSTN; a second RF transceiver interfaced with the communication device, the second RF transceiver configured for communication with the first RF transceiver via an RF link; and a controller associated with the communication device, responsive to communications received from the first RF transceiver to communicate over a phone line via the PSTN and maintain two-way communication between the personal data access device and the remote communication unit via the PSTN and the RF link, the controller being configured to allow data communications over the PSTN and being configured to terminate the communication between the personal data access device and the remote communication unit, wherein responsive to receiving from the first RF transceiver a termination message, the controller terminates the communication between the personal data access device and the remote communication unit. 10. The system of claim 9, wherein the remote communication unit provides access to a network, wherein the network is selected from the group consisting of: a wide area network (WAN), a local area network (LAN), an Intranet, and the Internet. 11. The system of claim 9, wherein the first and second RF transceiver communicate over the RF link using a protocol selected from the group consisting of: single channel frequency hopping, multi-channel frequency hopping, and direct sequence spread spectrum. 12. The system of claim 9, wherein the controller and second RF transceiver are located outside of the communications device in a separate module. 13. The system of claim 9, further including a second personal data access device having a fourth radio frequency (RF) transceiver; wherein the second RF transceiver interfaced with the communication device is configured to maintain communications with the second RF transceiver and the fourth RF transceiver simultaneously. 14. The system of claim 9, wherein the first radio frequency (RF) transceiver is integrated into a Personal Computer Memory Card International Association (PCMCIA) card. 15. The system of claim 9, wherein the communications device is located inside a stationary device, wherein the stationary device selected from the group consisting of: an electric sign or a billboard. 16. The system as defined in claim 9, wherein the personal data access device is a portable handset configured to transmit digitized voice signals between to the first RF transceiver and the second RF transceiver. 17. The system as defined in claim 9, wherein the communications device includes a digital subscriber line (DSL) modem for communicating data between the PSTN and the second RF transceiver. 18. The system as defined in claim 9, wherein the controller is further configured to allow simultaneous voice and data communication over the PSTN. 19. A system for communicating with a remote communication unit via a public switched telephone network (PSTN), comprising: a personal data access device executing a program that is to communicate with the remote communication unit via the PSTN; a first radio frequency (RF) transceiver associated with the personal data access device and in communication with the program, wherein the first RF transceiver is controlled by the program; a communications device electrically connected for communication over the PSTN; a second RF transceiver interfaced with the communications device, the second RF transceiver configured for communication, via an RF link, with the first RF transceiver; and a controller interfaced with the communications device, responsive to communications received from the first RF transceiver to communicate over a data communication link via the PSTN to the remote communication unit designated by the personal data access device, the controller being configured to allow data communications over the PSTN, the controller and the program being further configured to maintain two-way communication between the personal data access device and the remote communication unit via the PSTN and the RF link, and the controller being further configured to terminate the data communication link over the PSTN to the remote communication unit designated by the personal data access device, wherein responsive to receiving from the first RF transceiver a termination communication that originated from the program, the controller terminates the data communication link. 20. The system as defined in claim 19, wherein the communications device is a device selected from the group consisting of: a node, a public pay-type telephone, a telephone, and a DSL modem. 21. The system as defined in claim 19, wherein the controller is further configured to allow simultaneous voice and data communication over the PSTN.
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