Telemetering capsule for physiological measurements

Claim 1

IN A DATE TRANSMITTER OF THE TYPE COMPRISING TANK CIRCUIT, MEANS CONSISTING OF AT LEAST ONE CAPACITOR MEANS AND AT LEAST ONE INDUCTOR MEANS BEING CONNECTED IN PARALLEL FOR RECEIVING A HIGH FREQUENCY MAGNETIC FIELD APPLIED FROM AN EXTERNAL LOCATION SO AS TO AVOID INCORPORATING A BUILT-IN POWER SUPPLY SOURCE FOR SAID DATA TRANSMITTER, MEANS FOR RECTIFYING THE RECEIVED ENERGY; MEANS FOR STORING SAID RECTIFIER ENERGY FOR INITIATION OF OSCILLATION AFTER THE ELAPSE OF A PREDETERMINED TIME INTERVAL MEASURED FROM THE INSTANT AT WHICH THE HIGH FREQUENCY MAGNETIC FIELD IS INTERRUPTED; MEANS FOR CONTROLLING THE CHARGING VOLTAGE VALUE OF SAID STORAGE MEANS TO THEREBY PLACE THE CHARGING VOLTAGE OF THE STORAGE MEANS UNDER CONTROL OF THE INDUCTANCE OF SAID TANK CIRCUIT TO THEREBY VARY THE OSCILLATION INITIATION TIME; SAID MEANS FOR STORING SAID RECTIFIER ENERGY BEING A CAPACITOR, SAID RECTIFYING MEANS BEING A TRANSISTOR HAVING EMITTER, BASE AND COLLECTOR ELECTRODES, SAID STORING CAPACITOR BEING CONNECTED ACROSS THE BASE AND EMITTER ELECTRODES OF SAID TRANSISTOR; SAID MEANS FOR PLACING SAID STORAGE CAPACITOR UNDER CONTROL OF SAID TANK CIRCUIT INDUCTANCE BEING COMPRISED OF A SECOND CAPACITOR CONNECTED BETWEEN THE COLLECTOR ELECTRODE OF SAID TRANSISTOR AND ONE TERMINAL OF SAID TANK CIRCUIT; AND A RESISTIVE MEMBER CONNECTING ONE TERMINAL OF SAID SECOND CAPACITOR TO ONE TERMINAL OF SAID STORING CAPACITOR AND BEING CONNECTED BETWEEN SAID COLLECTOR AND BASE ELECTRODES; SAID TANK CIRCUIT INDUCTOR MEANS COMPRISING FIRST AND SECOND SERIES CONNECTED INDUCTORS, THE COMMON TERMINAL BETWEEN SAID FIRST AND SECOND INDUCTORS BEING COUPLED TO THE EMITTER OF SAID TRANSISTOR; THE INITIATION OF OSCILLATION BEING DETERMINED BY THE RATIO OF THE VALUES OF SAID FIRST AND SECOND INDUCATORS.