Data compression of ECG data using delta modulation
US4567883A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1983 |
| Grant date | Feb 4, 1986 |
| Priority date | — |
| Expiry date | Jun 9, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B14/064
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A data recording arrangement for recording ECG data within the body of a patient, for transmitting the ECG data to a point external to the body of a patient, and for recovering the transmitted ECG data is disclosed. The recording arrangement employs delta modulation circuitry for delta modulating the ECG data to obtain a delta modulated digital pulse train. The digital pulse train may be stored within the body of a patient for subsequent transmission external to the body of a patient. Transmission of the data external to the body of a patient may be by a piezoelectric transducer which transmits the digital data audibly for external detection and delta demodulation. Alternatively, delta demodulation may occur within the patient's body, and the demodulated analog signal may then be transmitted by FM, using the piezoelectric transducer to provide the FM audible signal detectable by an FM demodulator external to the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.