Data recovery scheme in thermometer system

A receiver unit comprising:

• a receiver for receiving a signal and recovering a sequence of bits from the received signal,
• a packet check means for determining whether the sequence of bits meets a predetermined standard and, if so, recovering a more recent datum from the sequence of bits else entering a data recovery mode and determining whether a sequence of bits subsequently recovered from the transmission signal meets said predetermined standard and, if so, recovering both a more recent datum and a less recent datum from the subsequent sequence of bits.

A method of operating a telemetric transmitter unit that periodically measures the value of a parameter and periodically and sequentially transmits the measured values, the method comprising:

• measuring a first value of the parameter, incorporating the first value in a first data packet, and transmitting the first data packet, and
• measuring a second value of the parameter, incorporating the second value and the first value in a second data packet, and transmitting the second data packet.

A method of operating a telemetric receiver unit, the method comprising:

• periodically receiving a signal and generating a sequence of bits therefrom,
• determining whether the sequence of bits includes a payload that meets a predetermined standard and, if so, recovering a more recent datum from the payload else entering a data recovery mode, and in the data recovery mode receiving a signal and generating a second sequence of bits and determining whether the second sequence of bits contains a payload that meets said predetermined standard and, if so, recovering both a more recent datum and a less recent datum from the payload.

A method of operating a telemetry system that comprises a transmitter unit and a receiver unit, wherein the transmitter unit operates in accordance with a method that comprises:

• measuring a first value of a parameter, incorporating the first value in a first data packet and transmitting the first data packet, and measuring a second value of the parameter, incorporating the second value and the first value in a second data packet and transmitting the second data packet;
• and the receiver unit operates in accordance with a method that comprises:
• periodically receiving a signal and generating a sequence of bits therefrom, determining whether the sequence of bits includes a payload that meets a predetermined standard and, if so, recovering a more recent datum from the payload else entering a data recovery mode, and in the data recovery mode receiving a transmission signal and generating a second sequence of bits and determining whether the second sequence of bits contains a payload that meets said predetermined standard and, if so, recovering both a more recent datum and a less recent datum from the payload.