System and method for recording receipt of information

Abstract From the Canadian patent

A section map may be used which utilizes a series of section maps (400a b, c, d), each section map including a predetermined number of bits such as 32 , bits. Each section map may include a single bit which indicates what is stored in the first 15 bits. For example, the last 16 bits of a section map may indicate whether the first 16 sections have been received. Another bit may be used to indicate what is stored in the first 15 bits. For example the first , 15 bits may indicate whether the next 15 sections have been received or they , may indicate an index pointing to the next section map.