Abstract: Apparatus and methods for calibrating tester channels of an automated test system. A relay matrix assembly including a plurality of microelectromechanical (MEM) switches may be used to connect a plurality of tester channels to an analyzer calibration instrument rapidly without requiring serial, robotic probing of the test channels. The relay matrix assembly may be constructed on a printed circuit board that can be attached to an interface on the tester. Calibration parameters for the test channels may be calculated from waveforms received through the relay matrix assembly and that have been corrected to remove waveform distortion introduced by the relay matrix assembly. Parameters to correct for distortion in the relay matrix assembly may be measured in advance and stored for use when calibration is to be performed.

Abstract: Apparatus and methods for calibrating tester channels of an automated test system are described. A relay matrix assembly comprising a plurality of microelectromechanical (MEM) switches may be used to connect a plurality of tester channels to analyzer calibration instrument rapidly without requiring serial, robotic probing of the test channels. The relay matrix assembly may be constructed on a printed circuit board that can be attached to an interface on the tester. Calibration parameters for the test channels may be calculated from waveforms received through the relay matrix assembly and that have been corrected to remove waveform distortion introduced by the relay matrix assembly. Parameters to correct for distortion in the relay matrix assembly may be measured in advance and stored for use when calibration is to be performed.

Abstract: An autonomous coverage robot includes a body, a drive system disposed on the body, and a cleaning assembly disposed on the body and configured to engage a floor surface while the robot is maneuvered across the floor surface. The cleaning assembly includes a driven cleaning roller, a cleaning bin disposed on the body for receiving debris agitated by the cleaning roller, and an air mover. The cleaning bin includes a cleaning bin body having a cleaning bin entrance disposed adjacent to the cleaning roller and a roller scraper disposed on the cleaning bin body for engaging the cleaning roller. The cleaning bin body has a holding portion in pneumatic communication with the cleaning bin entrance, and the air mover is operable to move air into the cleaning bin entrance.

Abstract: A method for optimizing message transmission and decoding comprises: reading data from a memory of an originating device, the data comprising information regarding the originating device; encoding the data by converting the data to a subset of words having a ranked recognition accuracy higher than the remainder of words; transmitting the encoded data from the originating device to a receiving system audibly as words via a telephone connection; utilizing a voice recognition software to recognize the words; decoding the words back to the data; and taking a predetermined action based on the data.

Abstract: An autonomous coverage robot includes a body, a drive system disposed on the body, and a cleaning assembly disposed on the body and configured to engage a floor surface while the robot is maneuvered across the floor surface. The cleaning assembly includes a driven cleaning roller, a cleaning bin disposed on the body for receiving debris agitated by the cleaning roller, and an air mover. The cleaning bin includes a cleaning bin body having a cleaning bin entrance disposed adjacent to the cleaning roller and a roller scraper disposed on the cleaning bin body for engaging the cleaning roller. The cleaning bin body has a holding portion in pneumatic communication with the cleaning bin entrance, and the air mover is operable to move air into the cleaning bin entrance.

Abstract: A method for optimizing message transmission and decoding comprises: reading data from a memory of an originating device, the data comprising information regarding the originating device; encoding the data by converting the data to a subset of words having a ranked recognition accuracy higher than the remainder of words; transmitting the encoded data from the originating device to a receiving system audibly as words via a telephone connection; utilizing a voice recognition software to recognize the words; decoding the words back to the data; and taking a predetermined action based on the data.

Abstract: A digital-to-analog converter (DAC) includes coarse interpolation DACs configured to produce a current range based on an input digital signal, and fine interpolation DACs configured to produce an output current that is based on an input digital signal and that is within the current range produced by the coarse interpolation DACs.

Abstract: A digital-to-analog converter (DAC) includes coarse interpolation DACs configured to produce a current range based on an input digital signal, and fine interpolation DACs configured to produce an output current that is based on an input digital signal and that is within the current range produced by the coarse interpolation DACs.

Abstract: A differential delay cell is disclosed. The delay cell includes a voltage bus and a differential pair of MOS transistors having respective source terminals coupled to define a current node, and respective drain terminal outputs that cooperate to form a differential output. A current source is disposed at the current node while a differential diode-connected load is disposed between the differential pair and the voltage bus. The differential diode-connected load comprises at least one n-channel MOS transistor configured as a diode.

Abstract: A differential delay cell is disclosed. The delay cell includes a voltage bus and a differential pair of MOS transistors having respective source terminals coupled to define a current node, and respective drain terminal outputs that cooperate to form a differential output. A current source is disposed at the current node while a differential diode-connected load is disposed between the differential pair and the voltage bus. The differential diode-connected load comprises at least one n-channel MOS transistor configured as a diode.