Patent ID: 7668588

Claim:
A physiologic monitoring system comprising: a battery; a plurality of electrocardiogram electrodes; a digital memory; and an integrated circuit connected to the battery, the plurality of electrocardiogram electrodes, and the digital memory, comprising: a real-time clock for generating a set of real time indicators; amplification and filtering circuitry for amplifying and filtering a set of physiologic electrical signals received from the plurality of electrocardiogram electrodes to generate a set of filtered electrical signals; digital control logic connected to the real-time clock and the amplification and filtering circuitry; and mode-selection logic connected to the digital control logic, for setting an operating mode of the integrated circuit to a mode selected from a stand-alone mode and a peripheral mode; wherein, in the stand-alone mode, the digital control logic is configured to generate a set of time-stamped physiologic data packets from the set of real-time indicators and a set of digital electrocardiogram data derived from the filtered electrical signals, and transmit the time-stamped data packets for storage in the digital memory; and wherein, in the peripheral mode, the integrated circuit is configured to transfer physiologic data derived from the digital electrocardiogram data to a programmable microcontroller.