Method and system of data transmission for a borehole logging tool

Abstract From the Canadian patent

Abstract, A borehole logging system employs a transmitter of acoustic energy pulses and at least one receiver for producing an analog signal representative of the acoustic pulses traveling from the transmitter to the receiver through the formation adjacent the borehole as the logging system is moved through the borehole. A sample-and-hold unit samples the analog signal and an analog-to-digital converter produces a digital data word representative of the sampled analog signal. A plurality of digital data words are stored and converted to a digital serial word for transmission to the surface of the earth over the logging cable.