摘要:
An apparatus and method for timing calibration of write and read-back data exchanges between respective dies of an external memory/external device has a master arbiter or, alternatively, a test mux between a system bus master interface and an external memory controller for driving the external memory/external device, a calibration circuit under control of the master arbiter via a test bus master interface to provide stepped-through time delays for test data exchanges between the dies, and the calibration circuit obtains pass/fail data indicating pass or fail of the varied time delays for the test data exchanges. A processor system at the system bus master interface selects calibration values corresponding to pass data, and applies the calibration values to the respective dies for timing of write and read-back data exchanges between the dies.
摘要:
Lightweight articles comprising a polymeric material at least partially coated with a fine-grained metallic material are disclosed. The fine-grained metallic material has an average grain size of 2 nm to 5,000 nm, a thickness between 25 micron and 5 cm, and a hardness between 200 VHN and 3,000 VHN. The lightweight articles are strong and ductile and exhibit high coefficients of restitution and a high stiffness and are particularly suitable for a variety of applications including aerospace and automotive parts, sporting goods, and the like.
摘要:
An inner tube of balls includes a first rubber layer to form an inner layer, a fabric layer located on an outer surface of the first rubber layer, and a second rubber layer located on the fabric layer to sandwich the fabric layer between the first rubber layer and the second rubber layer. The fabric layer provides support so that the inner tube is less likely to deform after inflation, and the quality of the balls improves.
摘要:
Compounds according to formula (I) wherein Z is S, SO, or SO2, may be prepared by a process that includes charging to a reactor hydrogen sulfide and an alkyl glycidyl ether according to formula (III), in the presence of a base. The compounds may also be prepared by contacting an alkoxychlorohydrin according to formula (II) with a sulfide source.
摘要:
Compounds according to formula (I) wherein Z is S, SO, or SO2, may be prepared by a process that includes charging to a reactor hydrogen sulfide and an alkyl glycidyl ether according to formula (III), in the presence of a base. The compounds may also be prepared by contacting an alkoxychlorohydrin according to formula (II) with a sulfide source.
摘要:
A four degree of freedom manipulator which comprises a pair of elongate rigid legs connected by a joint. The joint acts as an end-effector or an end-effector is attached thereto, The legs effectively intersect at a point in the joint. The positioning end of each leg is attached to a two degree of freedom positioning mechanism that can position it in a two dimensional plane. The connection between the leg and the positioning mechanism has two passive rotational degrees of freedom. Preferably five bar mechanisms are used as the positioning mechanisms. The manipulator can control the position and orientation of an end-effector.
摘要:
A method and system for a personal network. The method and system includes plural mobile location-aware client network devices with minimal CPU processing power and memory with a thin client application that uses secure tunneling/threads to send data to/from a home server network device and/or other server network devices on a personal network. The client devices can be voice activated. The home server network device and/or other server network devices do computational services requested by the plural mobile client network devices on demand and/or pre-programmed services. The secure tunneling/threads are also used across cloud and non-cloud communications network to/from other network devices and/or other mobile client network devices via the home network servers or other server network devices.
摘要:
A time-domain inertial sensor comprising: a support structure having an electrode plane parallel to an x-y plane of an x-y-z mutually orthogonal coordinate system, wherein the support structure's largest dimension lies within the x-y plane; a proof mass having a first surface parallel to the x-y plane; wherein the proof mass is springedly coupled to the support structure such that the first surface is separated from the electrode plane by a gap; a driver configured to drive the proof mass to oscillate with respect to the support structure in approximately only the x-direction such that, while oscillating, the gap does not vary significantly; and a first, time-domain, proximity switch disposed to switch from an open state to a closed state each time the proof mass is in a first reference position with respect to the support structure.
摘要:
The present invention provides new compositions containing nearly monodisperse colloidal core/shell semiconductor nanocrystals with high photoluminescence quantum yields (PL QY), as well as other complex structured semiconductor nanocrystals. This invention also provides new synthetic methods for preparing these nanocrystals, and new devices comprising these compositions. In addition to core/shell semiconductor nanocrystals, this patent application also provides complex semiconductor nanostructures, quantum shells, quantum wells, doped nanocrystals, and other multiple-shelled semiconductor nanocrystals.