WO1996033570B1 - Transmission of alphanumeric caller id information using dtmf signalling - Google Patents
Transmission of alphanumeric caller id information using dtmf signallingInfo
- Publication number
- WO1996033570B1 WO1996033570B1 PCT/US1996/005206 US9605206W WO9633570B1 WO 1996033570 B1 WO1996033570 B1 WO 1996033570B1 US 9605206 W US9605206 W US 9605206W WO 9633570 B1 WO9633570 B1 WO 9633570B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- multifrequency
- signal
- dtmf
- text
- signals
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract 13
- 230000011664 signaling Effects 0.000 title 1
- 230000000875 corresponding Effects 0.000 claims abstract 3
Abstract
A method and system for transmitting text information using multifrequency signals is provided. A switching center transmits a first multifrequency signal indicating the start of a text transmission. A receiver unit receives the first multifrequency signal and prepares to receive text information. The switching center transmits to the receiver unit a second and third multifrequency signal after the first multifrequency signal. The second and third multifrequency signals contain information corresponding to a text character. The receiver unit receives the second and third multifrequency signals and determines the text character transmitted. The switching center transmits a fourth multifrequency signal to the receiver unit indicating the end of the text transmission.
Claims
1. A method comprising the steps of: transmitting from a switching unit a start multifrequency signal, said start multifrequency signal being indicative of a start of a text transmission; receiving said start multifrequency signal at a receiver unit; transmitting a second multifrequency signal from said switching unit; receiving said second multifrequency signal at said receiver unit; transmitting a third multifrequency signal from said switching unit; receiving said third multifrequency signal at said receiver unit; transmitting an end multifrequency signal from said switching unit, said end multifrequency signal being indicative of an end of said text transmission; and receiving said end multifrequency signal at said receiver unit, wherein said second and third multifrequency signals contain information indicative of a text character.
2. The method of claim 1 further comprising the step of displaying said text character.
3. The method of claim 2 wherein said switching unit is a central office of a telephone system and said receiver unit is a customer premise equipment.
4. The method of claim 3 wherein said step of transmitting said start multifrequency signal comprises the step of transmitting said start multifrequency
-27- signal over a telephone line coupled between said central office and said customer premised equipment.
5. The method of claim 4 wherein steps of transmitting said start, second, third and end multifrequency signals each comprise the step of transmitting a DTMF signal.
6. The method of claim 5 wherein said start multifrequency signal indicates DTMF symbol "A" .
7. The method of claim 6 wherein said second and third multifrequency signals indicate DTMF numeric symbols corresponding to a two digit ASCII code for a text character.
8. A system comprising: a switching unit including a signal generator capable of providing a start multifrequency signal, at least a second multifrequency signal and a third multifrequency signal, and an end multifrequency signal; and a receiver unit capable of receiving said start multifrequency signal, said at least said second and third multifrequency signals, and said end multifrequency signal, wherein: said start multifrequency signal is indicative of a start of a text transmission; said at least said second and third multifrequency signals contain information indicative of at least one text character; and said end multifrequency signal is indicative of an end of said text transmission.
9. The system of claim 8 further comprising a display, said display displaying said text character.
10. The system of claim 9 wherein said switching unit is a central office of a telephone system and said receiver unit is a customer premise equipment.
11. The system of claim 10 further comprising a telephone line coupled between said central office and said customer premised equipment .
12. The system of claim 11 wherein said signal generator comprises a DTMF signal generator.
13. The system of claim 12 wherein said start multifrequency signal indicates DTMF symbol "A" .
14. The system of claim 13 wherein said second and third multifrequency signals indicate DTMF numeric symbols corresponding to a two digit ASCII code for a text character.
15. The system of claim 9 further comprising a memory, said memory storing said text character.
16. A device for receiving DTMF signals containing text data transmitted by a switching unit, comprising: a transmission channel interface coupled to said transmission channel; a DTMF receiver coupled to said transmission channel interface, said DTMF receiver being capable of receiving said DTMF signals; and a controller coupled to said DTMF receiver, said controller being capable of decoding received DTMF signals into text data;
-29- wherein said DTMF receiver includes: structure for receiving a start signal prior to receipt of said DTMF signals containing said text data; and structure for receiving an end signal following receipt of said DTMF signals containing said text data.
17. The device of claim 16 wherein said transmission channel interface is adapted to interface with a telephone line.
18. The device of claim 17 further comprising a ring detect circuit coupled to said telephone line and Raid mn roller.
19. The device of claim 17 further comprising a polarity detector coupled to said telephone line and said controller.
20. The device of claim 17 further comprising a display, said display adapted to display said text data.
21. The device of claim 17 further comprising a memory, said memory adapted to store said text data.
22. The device of claim 17 wherein said controller is adapted to decode a pair of DTMF signals representing a text character.
23. The device of claim 22 wherein each DTMF signal of said pair of DTMF signals represents a decimal digit whereby said pair of DTMF signals corresponds to an ASCII code of said text character.
-30-
24. A method comprising the steps of: transmitting from a switching unit a start multifrequency signal, said start multifrequency signal being indicative of a start of a text transmission; receiving said start multifrequency signal at a receiver unit; transmitting a first selected number of multifrequency signals from said switching unit in sequence; receiving said first selected number of multifrequency signals at said receiver unit; transmitting an end multifrequency signal from said switching unit, said end multifrequency signal being indicative of an end of said text transmission; and receiving said end multifrequency signal at said receiver unit, wherein said first selected number of multifrequency signals contain information indicative of a second selected number of text characters.
25. The method of Claim 24 wherein said second selected number is one half said first selected number.
-31-
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU55473/96A AU5547396A (en) | 1995-04-21 | 1996-04-19 | Transmission of alphanumeric caller id information using dtm f signalling |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US426,298 | 1995-04-21 | ||
| US08/426,298 US5699417A (en) | 1995-04-21 | 1995-04-21 | Text transmission using DTMF signalling |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO1996033570A2 WO1996033570A2 (en) | 1996-10-24 |
| WO1996033570A3 WO1996033570A3 (en) | 1996-11-28 |
| WO1996033570B1 true WO1996033570B1 (en) | 1997-01-09 |
Family
ID=23690209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1996/005206 WO1996033570A2 (en) | 1995-04-21 | 1996-04-19 | Transmission of alphanumeric caller id information using dtmf signalling |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5699417A (en) |
| AU (1) | AU5547396A (en) |
| WO (1) | WO1996033570A2 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5757801A (en) | 1994-04-19 | 1998-05-26 | Multi-Tech Systems, Inc. | Advanced priority statistical multiplexer |
| US5682386A (en) | 1994-04-19 | 1997-10-28 | Multi-Tech Systems, Inc. | Data/voice/fax compression multiplexer |
| US5699417A (en) * | 1995-04-21 | 1997-12-16 | Cidco Incorporated | Text transmission using DTMF signalling |
| MX9602601A (en) * | 1996-07-03 | 1998-04-30 | Servicios Condumex Sa | Telephon call identification dual equipment. |
| US5905794A (en) * | 1996-10-15 | 1999-05-18 | Multi-Tech Systems, Inc. | Caller identification interface using line reversal detection |
| US5915000A (en) * | 1997-06-30 | 1999-06-22 | Nguyen; Vinh H. | Text teletype writer with caller identification function |
| US6438212B1 (en) * | 1997-09-18 | 2002-08-20 | Verizon Services Corp. | Automated telephone line test apparatus with intelligent diagnostic function |
| US6212265B1 (en) | 1998-01-27 | 2001-04-03 | Darin Duphorne | Method and apparatus for electronic mail notification |
| US7558824B2 (en) * | 2000-06-15 | 2009-07-07 | At&T Intellectual Property I, L.P. | Electronic mail (Email) Internet appliance methods and systems |
| DE10100621A1 (en) * | 2001-01-09 | 2002-07-18 | Tenovis Gmbh & Co Kg | Operating telecommunications network involves passing first information entered at first terminal to second terminal together with call number and displayed and/or stored |
| US6845356B1 (en) * | 2001-01-31 | 2005-01-18 | International Business Machines Corporation | Processing dual tone multi-frequency signals for use with a natural language understanding system |
| US20020186833A1 (en) * | 2001-03-29 | 2002-12-12 | Lucas Phillip W. | System and method of communicating via an in-band tone messaging protocol |
| US6751303B1 (en) | 2002-06-28 | 2004-06-15 | Sprint Communications Company L.P. | Data communication over telephone voice channel using DTMF interface |
| US8260280B2 (en) * | 2010-01-25 | 2012-09-04 | Research In Motion Limited | System and method for the synchronized transmission of tone sequences |
| US8391457B2 (en) | 2010-04-26 | 2013-03-05 | Research In Motion Limited | Systems and methods of timing DTMF tones for telephony control |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE31789F1 (en) * | 1976-05-08 | 1995-03-07 | Hashimoto Corp | Telephone information displaying device |
| US4268721A (en) * | 1977-05-02 | 1981-05-19 | Sri International | Portable telephone communication device for the hearing impaired |
| US4304968A (en) * | 1979-09-24 | 1981-12-08 | Klausner Industries | Telephone electronic answering device |
| CA1217550A (en) * | 1981-10-02 | 1987-02-03 | Jose P. Pintos | Calling line tracing system and identification detector |
| DE3151172C2 (en) * | 1981-12-23 | 1983-10-27 | Siemens AG, 1000 Berlin und 8000 München | Procedure for the transmission of alphanumeric characters |
| US4427848B1 (en) * | 1981-12-29 | 1994-03-29 | Telephone Lottery Company Inc | Telephonic alphanumeric data transmission system |
| US4528424A (en) * | 1983-06-24 | 1985-07-09 | International Telephone And Telegraph Corporation | Multiparty line adapter with privacy feature controlled by reversal of line polarity at a central power source |
| US4582956B1 (en) * | 1983-07-12 | 1994-09-20 | Bell Telephone Labor Inc | Method and apparatus for displaying at a selected station special service information during a silent interval between ringing |
| US4608457A (en) * | 1984-04-11 | 1986-08-26 | Fowler Stephen L | Telecommunications device for the hearing impared |
| US4873719A (en) * | 1988-11-18 | 1989-10-10 | Morris Reese | Enhanced calling number delivery service system |
| DE3920721A1 (en) * | 1989-06-24 | 1991-01-03 | Standard Elektrik Lorenz Ag | Telephone terminal operation with data indication - involves initialising by transmission of specific dial signal to exchange |
| US5103449A (en) * | 1989-11-03 | 1992-04-07 | International Business Machines Corporation | Pbx transparent ani and dnis using vru |
| US5228080A (en) * | 1990-06-25 | 1993-07-13 | Colonial Data Technologies Corp. | Method and apparatus for processing an incoming telephone call signal which may include a data message |
| US5249220A (en) * | 1991-04-18 | 1993-09-28 | Rts Electronics, Inc. | Handheld facsimile and alphanumeric message transceiver operating over telephone or wireless networks |
| US5327493B1 (en) * | 1991-05-02 | 1997-10-14 | Active Voice Inc | Device for detecting tones on telephone lines |
| US5206900B1 (en) * | 1991-05-31 | 1998-06-09 | David Callele | Automated attendant |
| GB9113154D0 (en) * | 1991-06-18 | 1991-08-07 | Polestar Sa | Caller identification |
| US5263084A (en) * | 1991-07-22 | 1993-11-16 | Northern Telecom Limited | Spontaneous caller identification with call-waiting |
| US5384770A (en) * | 1992-05-08 | 1995-01-24 | Hayes Microcomputer Products, Inc. | Packet assembler |
| US5371781A (en) * | 1993-09-30 | 1994-12-06 | At&T Corp. | System and method for identifying the incoming directory number when multiple directory numbers are assigned to one wireless device |
| US5490204A (en) * | 1994-03-01 | 1996-02-06 | Safco Corporation | Automated quality assessment system for cellular networks |
| US5699417A (en) * | 1995-04-21 | 1997-12-16 | Cidco Incorporated | Text transmission using DTMF signalling |
-
1995
- 1995-04-21 US US08/426,298 patent/US5699417A/en not_active Expired - Lifetime
-
1996
- 1996-04-19 WO PCT/US1996/005206 patent/WO1996033570A2/en active Application Filing
- 1996-04-19 AU AU55473/96A patent/AU5547396A/en not_active Abandoned
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO1996033570B1 (en) | Transmission of alphanumeric caller id information using dtmf signalling | |
| US5200988A (en) | Method and means for telecommunications by deaf persons utilizing a small hand held communications device | |
| EP0150181B1 (en) | Method and apparatus for displaying at a selected station special service information during a silent interval between ringing | |
| AU606333B2 (en) | Pager receiver helpful for effective use of call numbers | |
| US4918721A (en) | Push button phone capable of sending to the telephone line alphabetical characters | |
| CA1307601C (en) | Telephone data collection device | |
| US4307266A (en) | Communication apparatus for the handicapped | |
| EP0511008B1 (en) | Wireless communication system | |
| US5283570A (en) | Multiple format signalling protocol for a selective call receiver | |
| EP0108938B1 (en) | Digital paging system having bit rate switching means and digital paging receiver therefor | |
| WO1993023946A1 (en) | Telecommunication device for the deaf with interrupt and pseudo-duplex capability | |
| US5272465A (en) | Automatic alarm code converter | |
| US5109220A (en) | Selective call controller | |
| US5699417A (en) | Text transmission using DTMF signalling | |
| KR950703775A (en) | Digital communications system, transmitting apparatus and a receiving apparatus for use in the system | |
| EP0893790A3 (en) | Radio communication apparatus | |
| JPS59168756A (en) | System for displaying caller identification information | |
| US6751303B1 (en) | Data communication over telephone voice channel using DTMF interface | |
| CA1141453A (en) | Shared maintenance terminal system | |
| WO1980000517A1 (en) | Communication apparatus for the handicapped | |
| KR19990016768A (en) | Text Information Service Method Using DTF in Phone | |
| CN2273929Y (en) | Telephone/telegraphic set | |
| JP3041852B2 (en) | Data receiver | |
| KR960016902B1 (en) | Text pager | |
| Glaser | Telephone communication for the deaf |