Abstract:
Systems and methods for measuring flow velocities, including ultrasound systems, are provided. A Doppler angle between a direction of ultrasound signals and an axis of a flow may be estimated to improve the accuracy of the flow velocity estimation that is based on Doppler effects. A sensor may be mounted on or in an ultrasound probe to obtain a reference orientation of the ultrasound probe and an orientation of the ultrasound probe relative to the reference orientation when the ultrasound probe is moved to other positions. The Doppler angle may be estimated based on the orientation of the ultrasound probe.
Abstract:
A memory device operable to provide multi-port functionality, which may comprise a single-port memory having a first operating frequency that is at least twice of a second operation frequency of a multi-port memory, a read synchronization module that synchronizes a set of read signals from the second operation frequency to the first operating frequency, a write synchronization module that synchronizes a set of write signals from the second operation frequency to the first operating frequency, a read/write signal selector that integrates a set of synchronized read signals and a set of synchronized write signals into a set of input control signals of the single-port memory, and a read out data synchronization module configured to synchronize a set of read out data from the single-port memory with the second operation frequency of the multi-port memory.