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| Number | Title | Issue Date |
| 8185680 | Method for changing ownership of a bus between master/slave devices A system may comprise multiple master/slave devices coupled to a common bus, where one of the devices may operate as the current master device and the other devices may operate as current slave devices. Current slave devices may embed bus ownership request informati... | 05/22/2012 |
| 8156352 | Single pin port power control A power controller for a peripheral bus interface. A peripheral bus power controller includes a first terminal, a second terminal coupled to receive an power enable input signal from a host controller, and a third terminal coupled to provide an over-current output s... | 04/10/2012 |
| 8156274 | Direct slave-to-slave data transfer on a master-slave bus A method and system for transferring data between two slave devices. A system includes a master device and first and second slave devices coupled to the master device by a peripheral bus. The master device is configured to configure the first slave device as a sourc... | 04/10/2012 |
| 8154270 | Power-up control for very low-power systems An input protection circuit (IPC) may prevent an input signal from propagating into a system, such as an integrated circuit (IC), when the voltage level of the input signal exceeds a specified value. The IPC may be configured to compare the input signal voltage, whi... | 04/10/2012 |
| 8154053 | Programmable metal elements and programmable via elements in an integrated circuit An integrated circuit may include one or more cells, with each cell comprising a first and a second input terminal, a first and a second output terminal, and a number of connection stages configured to couple each input terminal to a corresponding respective output ... | 04/10/2012 |
| 8150452 | Providing a connection between a memory medium of a mobile device and an external device System and method for providing a high speed connection to a memory medium of a mobile device. The mobile device may be a mobile phone or other type of portable electronic device. The memory medium may be removable and/or may be flash memory, as desired. The mobile ... | 04/03/2012 |
| 8149001 | Low cost fingerprint sensor system Low cost fingerprint system having a single chip solution includes a circuit board, a fingerprint sensor array fabricated onto a first surface of the circuit board, and an integrated circuit die for processing information received from the fingerprint sensor array i... | 04/03/2012 |
| 8149000 | Detecting closure of an electronic device using capacitive sensors System and method for determining closure of an electronic device. The electronic device may include a top portion and a bottom portion, and may be connecting via a hinge or other closing mechanism. The top portion and/or the bottom portion may include one or more c... | 04/03/2012 |
| 8138802 | Symmetrical electrical physical layer activity detector A low-current differential signal activity detector circuit may be configured to reject large common mode signals on differential input lines, while still detecting smaller differential signals applied to the same set of differential input lines. The detector circui... | 03/20/2012 |
| 8135883 | USB hub apparatus supporting multiple high speed devices and a single super speed device Hub apparatus that supports multiple high speed devices and a super speed device. The hub apparatus may include at least one upstream port for coupling to a host device and at least one downstream port for coupling to at least one downstream device. The hub apparatu... | 03/13/2012 |
| 8130110 | Reporting a faulty charging device Reporting a faulty charging device. A mobile device may determine if a charging device is a faulty charging device. The determination may be performed after coupling the charging device to a power source and to the mobile device. If the charging device is a faulty c... | 03/06/2012 |
| 8122205 | Structured virtual registers for embedded controller devices Techniques for using structured virtual registers in embedded systems are described. A virtual register structure definition provides a map of virtual registers within an embedded controller. The virtual registers are externally accessible and correspond to memory l... | 02/21/2012 |
| 8103174 | Transmission network having an optical receiver that utilizes dual power pins and a single status pin to lower power consumption, lower manufacturing cost, and increase transmission efficiency A communication network is provided for interconnecting a network of digital systems, such as multimedia devices. Each node of the communication network may include a receiver and a transmitter. The receiver and transmitter of each node can be an optical receiver an... | 01/24/2012 |
| 8076752 | Fringe capacitor using bootstrapped non-metal layer Capacitors configured in a switched-capacitor circuit on a semiconductor device may comprise very accurately matched, high capacitance density metal-to-metal capacitors, using top-plate-to-bottom-plate fringe-capacitance for obtaining the desired capacitance values.... | 12/13/2011 |
| 8060678 | Digital device interconnect system A simple clock source synchronous DDR data transfer mechanism may be combined with static bus state signaling to replace a complex bus (e.g. USB) with an easy to implement digital serial interconnect bus. This may eliminate various pull-up/pull-down resistors requir... | 11/15/2011 |
| 8055919 | Port power controller for USB hubs with legacy battery charge support A system and method for efficient power management of peripheral port connections. A USB hub core is configured to detect the presence of a legacy peripheral device on a downstream port when a corresponding USB host is in a non-operational state. The USB hub core ch... | 11/08/2011 |
| 8055825 | Digital device interconnect method A simple clock source synchronous DDR data transfer mechanism may be combined with static bus state signaling to replace a complex bus (e.g. USB) with an easy to implement digital serial interconnect bus. This may eliminate various pull-up/pull-down resistors requir... | 11/08/2011 |
| 8054033 | Brushless, three phase motor drive A control method for a sensor-less, brushless, three-phase DC motor. A pulse-width modulation (PWM) duty cycle may be calculated. A voltage induced by rotation of a rotor may be sampled at a first expected zero crossing value to produce a first sampled voltage value... | 11/08/2011 |
| 8041874 | USB and ethernet controller combination device A USB-to-Ethernet controller with a USB hub may be integrated into a single integrated circuit (IC) USB-Ethernet Combination (UEC) device. The UEC may provide the end user with an Ethernet port, multiple downstream USB ports, and an upstream USB port for connecting ... | 10/18/2011 |
| 8006095 | Configurable signature for authenticating data or program code System and method for authenticating data or program code via a configurable signature. Configuration information is retrieved from a protected first memory, e.g., an on-chip register, where the configuration information specifies a plurality of non-contiguous memor... | 08/23/2011 |
| 7991943 | Implementation of one time programmable memory with embedded flash memory in a system-on-chip System and method for implementing one time programmable (OTP) memory using embedded flash memory. A system-on-chip (SoC) includes a cleared flash memory array that includes an OTP block, including an OTP write inhibit field that is initially deasserted, a flash mem... | 08/02/2011 |
| 7991514 | Processor temperature measurement through median sampling Temperature readings obtained within a computer system from the location of monitored circuit elements may be oversampled at least three times, and a median average of the three parameter readings rather than the arithmetic mean may be used for controlling a device,... | 08/02/2011 |
| 7990182 | Electrical physical layer activity detector A low-current differential signal activity detector circuit may be configured to reject large common mode signals on differential input lines, while still detecting smaller differential signals applied to the same set of differential input lines. The detector circui... | 08/02/2011 |
| 7986962 | Providing a high-speed connection between a memory medium of a mobile device and an external device System and method for providing a high speed connection to a memory medium of a mobile device. The mobile device may be a mobile phone or other type of portable electronic device. The memory medium may be removable and/or may be flash memory, as desired. The mobile ... | 07/26/2011 |
| 7979601 | External direct memory access of embedded controller memory An embedded controller capable of providing direct memory access (DMA) to memory for a host. The controller may include a processor, a memory medium, and an interface coupled to the memory medium. The interface may be configured to couple to a host and receive a DMA... | 07/12/2011 |
| 7966379 | In-band event polling In-band event polling mechanism. A master device may initiate a polling transaction to poll at least a subset of a plurality of slave devices for event information. In response to the polling transaction, at least one of the subset of slave devices may transmit even... | 06/21/2011 |
| 7952402 | Power-up control for very low-power systems A power-on-reset (POR) circuit may comprise a first circuit powered by a first supply voltage and configured to generate a second supply voltage based on the first supply voltage, the second supply voltage having a nominal value lower than a nominal value of the fir... | 05/31/2011 |
| 7944271 | Temperature and supply independent CMOS current source An improved current source may provide an improvement over a typical ΔVgs-type current source. The improved current source may comprise two branches. A first branch may be configured to generate a PTC (proportional to absolute temperature) current based ... | 05/17/2011 |
| 7930576 | Sharing non-sharable devices between an embedded controller and a processor in a computer system System and method for sharing a device, e.g., non-volatile memory, between a host processor and a microcontroller. In response to system state change to a first state wherein the microcontroller is assured safe access to the non-volatile memory (e.g., in response to... | 04/19/2011 |
| 7917741 | Enhancing security of a system via access by an embedded controller to a secure storage device System and method for performing pre-boot security verification in a system that includes a host processor and memory, an embedded microcontroller with an auxiliary memory, e.g., an on-chip ROM, or memory controlled to prohibit user-tampering with the contents of th... | 03/29/2011 |
| 7917716 | Memory protection for embedded controllers System and method for protecting data in a system including a main processor, an embedded controller, and a memory. In response to a power-on-reset (POR), access to the memory is enabled, e.g., access by the embedded controller. First data is read from the memory (e... | 03/29/2011 |
| 7917679 | Trusted LPC docking interface for docking notebook computers to a docking station A method and apparatus for operating a portable computer configured for docking to a docking station is disclosed. In one embodiment, a portable computer system includes a docking interface having a bus switch and a bus monitoring circuit, and a bus coupled to the d... | 03/29/2011 |
| 7912381 | Transmission network having an optical receiver that utilizes dual power pins and a single status pin to lower power consumption, lower manufacturing cost, and increase transmission efficiency A communication network is provided for interconnecting a network of digital systems, such as multimedia devices. Each node of the communication network may include a receiver and a transmitter. The receiver and transmitter of each node can be an optical receiver an... | 03/22/2011 |
| 7907003 | Method for improving power-supply rejection An electronic circuit may comprise an input stage powered by a supply voltage and configured to receive a reference signal. The circuit may further comprise an output stage powered by the supply voltage and coupled to the input stage, and configured to generate an e... | 03/15/2011 |
| 7906994 | Fast common mode feedback control for differential driver A system and method for a fast stabilizing output buffer. A differential driver circuit is provided with an amplifier stage for receiving a differential input signal and generating a differential output based upon the input signal. The differential output has a corr... | 03/15/2011 |
| 7893670 | Frequency compensation scheme for stabilizing the LDO using external NPN in HV domain A voltage regulator may comprise a regulator output configured to provide a regulated voltage, which may be controlled by an error amplifier based on the regulated voltage and a reference voltage. The error amplifier may control a source-follower stage to mirror a m... | 02/22/2011 |
| 7890684 | Two-cycle return path clocking Return path clocking mechanism for a system including a master device connected to a plurality of slave devices via a bus. The master device may first generate a global clock. The master device may transmit data to one or more of the slave devices at a rate of one b... | 02/15/2011 |
| 7882297 | Serial bus hub with low power devices Serial bus hub with one or more low power devices. The serial bus hub may include at least one upstream port for coupling to a host system. The serial bus hub may include one or more downstream ports for coupling to peripheral devices. The serial bus hub may include... | 02/01/2011 |
| 7849253 | Method for fast access to flash-memory media In one embodiment, the invention comprises a flash-media controller used for writing new data from an external system to a local flash-memory device. The newly written data may replace old data previously written to the flash-memory device, and may be written direct... | 12/07/2010 |
| 7863849 | Delta-sigma modulator for a fan driver A fan driver circuit for powering a fan with a linear voltage may be designed using digital design techniques, resulting in a testable, accurate circuit on a smaller die size. The fan driver circuit may be configured to receive a digital control signal, which may be... | 01/04/2011 |
