EP1192814A1 - Acoustic transmission using digital mobile phones - Google Patents
Acoustic transmission using digital mobile phonesInfo
- Publication number
- EP1192814A1 EP1192814A1 EP00934814A EP00934814A EP1192814A1 EP 1192814 A1 EP1192814 A1 EP 1192814A1 EP 00934814 A EP00934814 A EP 00934814A EP 00934814 A EP00934814 A EP 00934814A EP 1192814 A1 EP1192814 A1 EP 1192814A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- frequency
- data signals
- frequency modulated
- signals
- digital mobile
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
- A61B5/0004—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by the type of physiological signal transmitted
- A61B5/0006—ECG or EEG signals
Definitions
- the present invention relates to the field of monitoring a cardiac patient's electrical cardiac activity at a central location by means of an apparatus associated with a digital mobile phone handset and transmitting the information over the digital mobile phone/ telephone network.
- Cardiac event recorders use acoustic transmission of recorded signals via telephone systems.
- An ECG signal is frequency modulated in the audio band of the conventional telephone line.
- Digital mobile telephones use special filtering techniques in order to reduce the amount of transmitted data. The filtering algorithm used can recognise a non-voice sound and suppress it. Therefore, frequency modulated ECG signals are treated by the digital mobile telephone system as a single frequency unwanted noise.
- a method of transmitting frequency modulated data signals over a digital mobile phone network which filters the transmitted data signals comprising the step of providing original said frequency modulated data signals with more than one frequency.
- the frequency modulated data signals having more than one frequency are modulated in amplitude as well.
- the frequency modulated data signals having more than one frequency is achieved by generating a pseudo random sequence which does not overlap the frequency band of the FM data signals and mixing the sequence with the original data frequency modulated signals.
- the pseudo random sequence has a lower frequency band than that of the original data frequency modulated signals.
- Fig. 1 is a diagram showing the relative frequency bands of the mixed signals in accordance with the preferred embodiment of the present invention.
- Fig. 2 is a schematic block diagram of the circuitry used in the preferred embodiment of the present invention.
- a mixing circuit 10 is illustrated in Fig. 2.
- the circuit 10 includes a CPU 11 with a push-pull speaker driver 12.
- the CPU 11 generates frequency modulated data signals FM ECG 1 and FM ECG 2 as well as a pseudo random sequence PRS having frequency bands as illustrated in Fig. 1.
- Resistor Rl of the push-pull speaker driver 12 limits the current form the output of the CPU 20 1 1 while the PRS signal is also applied to the speaker via the resistor R2.
- the signals FM ECG 1 and PRS are mixed at the speaker which allows for the amplitude modulation of the FM ECG 1 - FM ECG 2 signal by the lower frequency PRS signal.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPQ0884A AUPQ088499A0 (en) | 1999-06-10 | 1999-06-10 | Acoustic transmission using digital mobile phones |
AUPP990884 | 1999-06-10 | ||
PCT/AU2000/000655 WO2000078065A1 (en) | 1999-06-10 | 2000-06-09 | Acoustic transmission using digital mobile phones |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1192814A1 true EP1192814A1 (en) | 2002-04-03 |
EP1192814A4 EP1192814A4 (en) | 2005-02-16 |
Family
ID=3815078
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00934814A Withdrawn EP1192814A4 (en) | 1999-06-10 | 2000-06-09 | Acoustic transmission using digital mobile phones |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1192814A4 (en) |
AU (1) | AUPQ088499A0 (en) |
WO (1) | WO2000078065A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109561847B (en) * | 2016-08-17 | 2022-11-08 | 皇家飞利浦有限公司 | Adapter and connection unit for coupling with medical coupling unit and sensor |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4313197A (en) * | 1980-04-09 | 1982-01-26 | Bell Telephone Laboratories, Incorporated | Spread spectrum arrangement for (de)multiplexing speech signals and nonspeech signals |
US4425661A (en) * | 1981-09-03 | 1984-01-10 | Applied Spectrum Technologies, Inc. | Data under voice communications system |
US5745525A (en) * | 1994-07-12 | 1998-04-28 | Usa Digital Radio Partners, L.P. | Method and system for simultaneously broadcasting and receiving digital and analog signals |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3426150A (en) * | 1965-09-27 | 1969-02-04 | Lockheed Aircraft Corp | System for fm transmission of cardiological data over telephone lines |
US3872252A (en) * | 1973-03-07 | 1975-03-18 | Esb Inc | Apparatus for monitoring electrical signals, either artificial and/or natural in a living body, via a communication link |
US3986498A (en) * | 1975-09-08 | 1976-10-19 | Videodetics Corporation | Remote ECG monitoring system |
GB1601941A (en) * | 1977-03-04 | 1981-11-04 | Post Office | System for transmitting alarm information over telephone lines |
US4694471A (en) * | 1986-05-05 | 1987-09-15 | Blesser Barry A | Digital data communicating |
GB2220824A (en) * | 1988-07-13 | 1990-01-17 | Philips Electronic Associated | Transmission system for sending two signals simultaneously on the same communications channel |
AU633871B2 (en) * | 1989-01-13 | 1993-02-11 | Scott Fetzer Company, The | Apparatus and method for controlling and monitoring the exercise session for remotely located patients |
FR2695503B1 (en) * | 1992-09-04 | 1994-10-21 | Thomson Csf | Wireless medical data transmission system. |
-
1999
- 1999-06-10 AU AUPQ0884A patent/AUPQ088499A0/en not_active Abandoned
-
2000
- 2000-06-09 WO PCT/AU2000/000655 patent/WO2000078065A1/en not_active Application Discontinuation
- 2000-06-09 EP EP00934814A patent/EP1192814A4/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4313197A (en) * | 1980-04-09 | 1982-01-26 | Bell Telephone Laboratories, Incorporated | Spread spectrum arrangement for (de)multiplexing speech signals and nonspeech signals |
US4425661A (en) * | 1981-09-03 | 1984-01-10 | Applied Spectrum Technologies, Inc. | Data under voice communications system |
US5745525A (en) * | 1994-07-12 | 1998-04-28 | Usa Digital Radio Partners, L.P. | Method and system for simultaneously broadcasting and receiving digital and analog signals |
Non-Patent Citations (1)
Title |
---|
See also references of WO0078065A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1192814A4 (en) | 2005-02-16 |
WO2000078065A1 (en) | 2000-12-21 |
AUPQ088499A0 (en) | 1999-07-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20020110 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 20050104 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: 7H 04M 11/06 B Ipc: 7H 04Q 7/20 B Ipc: 7A 61B 5/00 A Ipc: 7H 04L 27/10 B |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20060530 |