Patent US3538173A successfully refreshed from Google Patents.
Patent US5144651A successfully refreshed from Google Patents.
US5144651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reduced time remote access method and system
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1990-11-19
•
Granted: 1992-09-01
•
Expires: 2010-11-19
Abstract
Abstract Several techniques for reducing the amount of time between initiation of a terminal request through a dial-up telephone line and the actual initiation of transactions between the terminal and a host computer. By using a ring down or hotline circuit configuration dialing and call setup time can be saved. With the ring down use no login procedure is necessary to ensure secure access to the host computer. The ring generation period is shortened to just an interval sufficient to allow the host modem to recognize the ring, with the ring indication period also begin shortened. The modems can be set to fixed baud rates, but in a more preferred embodiment the terminal modem transmits the originate carrier prior to the host modem picking up the line. The host modem then senses the originate carrier quickly and provides the answer carrier. The silent interval prior to operation of the host modem is removed. After the carriers are both provided, normal connection to the host computer is made and the transaction completed.
Inventors
- 👤 Christophe K. Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:24
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/06
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
177 words
A method of transmitting confidential data between a particular remote modem of a plurality of remote modems and a host computer having a host modem capable of being connected to any of the plurality, comprising the steps of: the particular remote modem seizing a telephone line; determining the seizure of the telephone line by the particular remote modem and initiating a ring down sequence to the host modem, said sequence being concluded by providing a ring signal to the host modem; the host modem seizing the telephone line and providing an answer tone upon receipt of the ring signal; the particular remote and host modems completing a carrier handshake after the answer tone is provided; providing indication from the host modem to the host computer that communication has been established and establishing a link between the host modem and the host computer; transmitting a transaction commence signal to the particular remote modem, said transaction commence signal being transmitted without a login procedure being performed; and transmitting confidential data between the particular remote modem and the host modem.
Claim 2
Independent Claim
177 words
A method of transmitting confidential data between a particular remote modem of a plurality of remote modems and a host computer having a host modem capable of being connected to any of the plurality, comprising the steps of: the particular remote modem seizing a telephone line; determining the seizure of the telephone line by the particular remote modem and initiating a ring down sequence to the host modem, said sequence being concluded by providing a ring signal to the host modem; the host modem seizing the telephone line and providing an answer tone upon receipt of the ring signal; the particular remote and host modems completing a carrier handshake after the answer tone is provided; providing indication from the host modem to the host computer that communication has been established and establishing a link between the host modem and the host computer; transmitting a transaction commence signal to the particular remote modem, said transaction commence signal being transmitted without a login procedure being performed; and transmitting confidential data between the particular remote modem and the host modem.
Claim 3
Dependent Claim
27 words
A method of claim 1, wherein the particular remote and host modems are selected to operate at a fixed, common baud rate without baud rate determination handshaking.
Claim 4
Independent Claim
164 words
A method of connecting a remote modem to a host computer having a host modem, comprising the steps of: the remote modem seizing a telephone line; determining the seizure of the telephone line by the remote modem and initiating a ring down sequence to the host modem, said sequence being completed by providing a ring signal to the host modem; the remote modem providing an originate carrier prior to the completion of providing the ring signal to initiate a modem handshake; the host modem sensing the ring signal and seizing the telephone line in response thereto and monitoring for the originate carrier; the host modem providing an answer carrier after determining the presence of the originate carrier to complete the modem handshake; providing indication from the host modem to the host computer that communication has been established and establishing a link between the host modem and the host computer; and transmitting a transaction commence signal to the remote modem after the link is established.
Claim 5
Independent Claim
164 words
A method of connecting a remote modem to a host computer having a host modem, comprising the steps of: the remote modem seizing a telephone line; determining the seizure of the telephone line by the remote modem and initiating a ring down sequence to the host modem, said sequence being completed by providing a ring signal to the host modem; the remote modem providing an originate carrier prior to the completion of providing the ring signal to initiate a modem handshake; the host modem sensing the ring signal and seizing the telephone line in response thereto and monitoring for the originate carrier; the host modem providing an answer carrier after determining the presence of the originate carrier to complete the modem handshake; providing indication from the host modem to the host computer that communication has been established and establishing a link between the host modem and the host computer; and transmitting a transaction commence signal to the remote modem after the link is established.
Claim 6
Dependent Claim
22 words
The method of claim 3, wherein the host modem provides the answer carrier without a silent interval after seizing the telephone line.
Claim 7
Dependent Claim
18 words
The method of claim 3, wherein the transaction commence signal is transmitted without a login procedure being performed.
Claim 8
Dependent Claim
47 words
The method of claim 3, wherein if the host modem fails to determine the presence of the originate carrier within a predetermined time, the host modem provides an answer tone and the remote and host modems complete a carrier handshake, prior to providing the communication established indication.
Claim 9
Dependent Claim
27 words
The method of claim 3, wherein the ring signal is provided to the host modem only for a period sufficient to allow detection by the host modem.
Claim 10
Independent Claim
92 words
A method of establishing communication between a remote modem associated with a point of sale terminal and a computer center having a host modem, comprising the steps of: establishing a telephone connection between the remote modem and the host modem at the computer center, the telephone connection being established upon said host modem answering a request for connection; the remote modem providing an originate carrier prior to the telephone connection being completed; and the host modem providing an answer carrier on detecting the existence of the originate carrier from the remote modem.
Claim 11
Independent Claim
92 words
A method of establishing communication between a remote modem associated with a point of sale terminal and a computer center having a host modem, comprising the steps of: establishing a telephone connection between the remote modem and the host modem at the computer center, the telephone connection being established upon said host modem answering a request for connection; the remote modem providing an originate carrier prior to the telephone connection being completed; and the host modem providing an answer carrier on detecting the existence of the originate carrier from the remote modem.
Claim 12
Dependent Claim
23 words
The method of claim 8, wherein the host modem provides the answer carrier without a silent interval after the telephone connection is established.
Claim 13
Dependent Claim
28 words
The method of claim 8, further comprising the step of: the host modem transmitting a transaction commence signal to the remote modem without first conducting a login procedure.
Claim 14
Dependent Claim
36 words
The method of claim 8 wherein the step of establishing a telephone connection includes transmitting a ring signal to the host modem, said ring signal having a duration sufficient to allow detection by the host modem.
Claim 15
Independent Claim
122 words
A system for conveying transaction information over a telephone network, comprising: a plurality of remote terminals; a plurality of terminal modems, one terminal modem associated with each of said remote terminals and connected to the telephone network, at least one of said terminal modems being adapted to transmit data at a preselected rate, said at least one terminal modem being further adapted to transmit an originate carrier without waiting to receive an answer tone; a host computer; and a host modem associated with said host computer and connected to the telephone network, said host modem being adapted to automatically transmit an answer carrier in response to detecting the existence of said originate carrier from said at least one of said terminal modems.
Claim 16
Independent Claim
122 words
A system for conveying transaction information over a telephone network, comprising: a plurality of remote terminals; a plurality of terminal modems, one terminal modem associated with each of said remote terminals and connected to the telephone network, at least one of said terminal modems being adapted to transmit data at a preselected rate, said at least one terminal modem being further adapted to transmit an originate carrier without waiting to receive an answer tone; a host computer; and a host modem associated with said host computer and connected to the telephone network, said host modem being adapted to automatically transmit an answer carrier in response to detecting the existence of said originate carrier from said at least one of said terminal modems.
Claim 17
Dependent Claim
28 words
The system of claim 12, wherein said host modem is further adapted to provide said answer carrier without a silent interval after a telephone network connection is established.
Claim 18
Dependent Claim
37 words
The system of claim 12, wherein the telephone network performs a ring down sequence, the telephone network providing a ring signal to said host modem only for a period sufficient to allow detection by said host modem.
Claim 19
Dependent Claim
26 words
The system of claim 12, wherein said host computer transmits a transmission commence signal through said host and remote modems without a login procedure being performed.
Claim 20
Dependent Claim
39 words
The system of claim 12, wherein said host modem is further adapted to provide an answer tone and perform a carrier handshake if said host modem fails to detect the existence of an originate carrier within a predetermined time.
References Cited (Backward Citations)
US3783194A
Cited
US4669090A
Cited
US4939767A
Cited
US4894847A
Cited
US4796292A
Cited
US5031207A
Cited
EP0380160A1
Cited
US5025469A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-01 | 1996-03-02 | 1996-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-01 | 2000-03-02 | 2000-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-01 | 2004-03-02 | 2004-09-01 | $7700.00 | Window Closed / Lapsed |