Sadat
Anwar Sadat, Richardson, TX US
Patent application number | Description | Published |
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20150319108 | RE-DRIVER FOR BIDRIECTIONAL UNIDRECTIONAL HIGH SPEED SIGNALING WHILE PERMITTING LOW SPEED BIDIRECTIONAL SIGNALING - A re-driver circuit includes a first channel comprising a receiver to receive an input signal from a first port to the re-driver circuit and a driver to receive a signal from the receiver and drive an output signal of the re-driver circuit through a second port. A second channel is also provided and is in parallel with the first channel and includes a bidirectional path switch. A channel control unit determines whether the input signal is indicative of a higher speed mode or of a lower speed mode and enables one of the first and second channels while disabling the other of the channels based on the determined mode. The first and second channels share the first and second ports. | 11-05-2015 |
Md Anwar Sadat, Plano, TX US
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20090085679 | DUAL PATH PHASE LOCKED LOOP (PLL) WITH DIGITALLY PROGRAMMABLE DAMPING - In a method and apparatus for controlling damping and bandwidth in a phase locked loop (PLL), a loop filter is configured to have a dual path for charge pump current. A 3 dB bandwidth of the PLL is controlled by adjusting gain of a proportional current path. An integral current path includes a gating circuit to digitally control an amount of time an integral charge pump current received is passed through as an effective integral charge pump current. A resistor and capacitor (RC) circuit filters the proportional and effective integral charge pump currents, thereby providing a filtered input to a voltage controlled oscillator. Damping and hence peaking of the PLL is precisely controlled by sampling one of every p samples of the integral charge pump current to provide the effective integral charge pump current, p being an integer. | 04-02-2009 |
Md Anwar Sadat, Richardson, TX US
Patent application number | Description | Published |
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20120013390 | DISPLAYPORT SWITCH - In versions 1.1a and 1.2 of the DISPLAYPORT™ standard, capacitors are used between a sourcing circuit and a switch for the auxiliary channel. As a result, these capacitors are generally uncharged when the switch activates the auxiliary channel, which can result in errors. Here, a switch is employed that uses precharge circuits to precharge these capacitors. Thus, errors due to charging of these capacitors can be reduced. | 01-19-2012 |
20150358011 | ADAPTIVE EDGE-RATE BOOSTING DRIVER WITH PROGRAMMABLE STRENGTH FOR SIGNAL CONDITIONING - A signal conditioner that includes a transition-detection module and a current-injection module. The transition-detection module is configured to receive a pair of differential signals from a data line and generate one or more comparator output signals and a transition-indication signal to indicate whether a transition has been detected on the differential signals. The current-injection module is configured to receive the comparator output signals and transition-indication signal from the transition-detection module, and generate appropriate currents for injection into the data line to boost edge rates of the differential signals when the transition-detection module detects a transition of the differential signals or remain high impedance when no transition occurs on the differential signals. | 12-10-2015 |
Seid H. Sadat, San Francisco, CA US
Patent application number | Description | Published |
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20160126159 | INTERPOSER FOR MULTI-CHIP ELECTRONICS PACKAGING - An interposer for vertically separating device die is disclosed. The interposer includes a compliant layer comprising a plurality of thermally conductive plugs that are physically disconnected within the plane of the compliant layer, where the space between the plugs is filled with a compliant medium. In some embodiments, at least one of the top and bottom surfaces of the compliant layer is coated with a thin layer of electrically insulating material. | 05-05-2016 |