Patent ID: 6906325

Claim:
A photo-receiver arrangement, comprising a photo-sensor that captures light being incident thereon within a predetermined range of light intensity values, and converts the captured incident light into a first electrical signal; a pre-scaler connected to the photo-sensor to produce a second scaled electrical signal based on and corresponding to said first electrical signal input into the pre-scaler, wherein the second scaled electrical signal is produced by the pre-scaler using a variable scaling factor which is dependent on the first electrical signal; and a preamplifier connected to an output of the pre-scaler to amplify the second scaled electrical signal input into the preamplifier, the preamplifier having a dynamic range of at least substantially linear gain; wherein the pre-scaler and the preamplifier are designed in a mutually matching configuration such that the second scaled electrical signal falls within the said dynamic range of the preamplifier for any light intensity value falling into said predetermined range of light intensity values, and wherein the second scaled electrical signal is produced by the pre-scaler independently of the preamplifier.