Abstract: A real time data transformation and transmission apparatus transforms data from a first data device and transfers the transformed data to a second data device which need not have a data transfer rate consistent with the first data device. Data from the first data device is divided into blocks and is compressed by a compression device and written into a buffer. A controller controls the buffer to transmit compressed data to the second data device as a function of the data receiving rate of the second data medium provided that the buffer contains a predetermined amount of data. While the buffer is transmitting data, the compressor is compressing further blocks of data which are being written to the buffer such that the predetermined amount of data is stored in the buffer upon completion of the buffer transmitting a block of data. This ensures that complete blocks of data are transmitted to the second data medium at the data receiving rate of the second data medium.

Abstract: An electrical counter including a pair of counter segments connected in cascade. Each of the counter segments has a capacity of two bits and counts in Gray code of 00, 01, 11, 10 and 00 on succeeding pulses to be counted which are applied onto the segment. The second segment includes an AND circuit which is satisfied when the count of the preceding segment is 10 so as to GATE the pulse supplied at that time on to the second segment so that the second segment has its value changed at the same time as the first segment has its value changed from 10 to 00.