The analysis of time multiplexing systems for partial success

Time division multiplexing system analysis for partial succes

Tetrad bubble domain chip arrangement for multiplexing

Rotating magnetic field of bubble domain memory is used to obtain time-division multiplexing of bubble domain circuits into quadrants. Memory bits are assigned on bit-per-chip rather than bit-per-module basis; power is reduced by circulating only portion of bubbles at a time

ANALYZING AND TRANSFORMING TIME DIVISION MULTIPLEXING EQUIPMENT STRUCTURE

The native Time Division Multiplexing (TDM) equipment hierarchy is not consistent and includes various non-hardware elements and many other obstacles. Techniques described herein provide a methodology for transforming the original structure to a modernized hierarchy that can correctly identify hardware elements and makes analysis and automation much more straightforward

Time-division multiplexing for cable reduction in ultrasound imaging catheters

In ultrasound imaging catheter applications, gathering the data from multi-element transducer arrays is difficult as there is a restriction on cable count due to the diameter of the catheter. In such applications, CMUT-on-CMOS technology allows for 2D arrays with many elements to be designed and bonded directly onto CMOS circuitry. This allows for complex electronics to be placed at the tip of the catheter which leads to the possibility to include electronic multiplexing techniques to greatly reduce the cable count required for a large element array. Current approaches to cable reduction tend to rely on area and power hungry circuits to function, making them unsuitable for use in catheters. Furthermore the length requirement for catheters and lack of power available to on-chip cable drivers leads to limited signal strength at the receiver end. In this paper an alternative approach using Analogue Time Division Multiplexing (TDM) is presented, which addresses the cable restrictions of the catheter and, using a novel digital demultiplexing technique, allows for a reduction in the number of analogue signal processing stages required