초록 ▼

An improved body function assistance device is provided wherein a microprocessor controls the response of the device to various external physiological events and internal timer events. The microprocessor is adapted for use with the limited energy supply available from a battery by activating interna

An improved body function assistance device is provided wherein a microprocessor controls the response of the device to various external physiological events and internal timer events. The microprocessor is adapted for use with the limited energy supply available from a battery by activating internal logic components of the processor only in response to selected events and to perform an operating routine corresponding to the “wakeup”event. At the end of the operating routine, a new set of wakeup events is selected and the internal logic components are deactivated. A further reduction in the average operating current is obtained by providing a plurality of counting rates to minimize the number of state changes during counting cycles. The microprocessor may be provided with a fixed operating routine or may be provided with the capability of actually introducing program changes in the implanted device.

대표청구항 ▼

A method of reducing the power consumption of a microprocessor controlled system comprising the steps of: (a) storing a wakeup parameter; (b) operating the microprocessor in a sleep state wherein no processing activity or a predetermined sleep processing activity occurs; (c) generating event signals

A method of reducing the power consumption of a microprocessor controlled system comprising the steps of: (a) storing a wakeup parameter; (b) operating the microprocessor in a sleep state wherein no processing activity or a predetermined sleep processing activity occurs; (c) generating event signals upon the occurrence of corresponding predetermined events; and (d) operating the microprocessor with a processing activity increased with respect to the activity occurring during said sleep state, in response to a generated event signal which corresponds to the stored wakeup parameter.