Encoding table generation method, encoding method, decoding method, program product, and processing device

Abstract

A method of generating an encoding table for sensor signals of a vehicle includes (i) obtaining the frequency at which sensor signals occur, (ii) classifying the sensor signals into different levels according to the occurrence frequency, with the level number related to the number of encoding bits, wherein the higher the occurrence frequency, the smaller the level number and the smaller the number of encoding bits, (iii) assigning binary codes to the sensor signals, wherein the binary code has a single middle bit, front bits before the middle bit, and rear bits after the middle bit, the middle bit is written into a first bit value, the number of the front bits characterizes the level and is written into a second bit value, and the number of the rear bits depends on the number of the front bits and the value of the sensor signal is mapped out by the bit value of the rear bits, and (iv) generating an encoding table to establish corresponding relationships between the sensor signals and the binary codes. A corresponding encoding method, decoding method, computer program product, and processing device are also disclosed. This can reduce the memory required to record sensor signals.