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Patent
Renesas Electronics America | Date: 2017-01-13

An apparatus and method for use in devices such as rechargeable battery packs. The apparatus, in one embodiment, includes an integrated circuit comprising a first circuit, a second circuit, and a thin film transistor (TFT). The first circuit is configured to generate a square wave signal. The second circuit is configured to convert the square wave signal to a direct current (DC) signal. The TFT is configured to activate and conduct current in response to the DC control signal.


Patent
Renesas Electronics America | Date: 2015-09-11

A transformer less battery charger system. In one embodiment, the battery charger system includes input terminals for receiving an AC voltage, output terminals for receiving terminals of a rechargeable battery pack, and a non-isolated DC-DC converter coupled between the input terminals and the output terminals. A device is also coupled somewhere between the input terminals and the output terminals. The device is configured to selectively and indirectly couple the input terminals to the output terminals. More particularly, the device indirectly couples the input terminals to the output terminals when the rechargeable battery pack terminals are received by the output terminals, and the device indirectly decouples the input terminals from the output terminals when the rechargeable battery pack terminals are separated from the output terminals.


Patent
Renesas Electronics America | Date: 2016-10-11

Provided herein are various systems, methods and architectures for enabling a microcontroller manufacturer to provide certain modification and configuration functionality to product vendors, while still maintaining the level of control needed to ensure that a product vendor does not inadvertently (or otherwise) create code that causes the microcontroller to not work properly. In one embodiment, this functionality can be performed through the steps of displaying a set of microcontroller properties that are available for configuration, receiving user information regarding a first value corresponding to a first microcontroller property, determining whether the user information results in a valid microcontroller configuration, and in response to determining that the user information results in a valid microcontroller configuration, generating compiled code for the microcontroller.


Patent
Renesas Electronics America | Date: 2016-10-12

A method and apparatus for secure code delivery. In one embodiment the method is implemented on a computer system, and includes reading an access privilege from a first set of access privileges, wherein the first set of access privileges corresponds to a first file that comprises first encrypted source code. The first encrypted source code is decrypted to produce first decrypted source code. A determination is made as to whether the first access privilege is set to a first state or a second state. If the first access privilege is set to the first state, a first software development tool is permitted to access and process the first decrypted source code. If the first access privilege is set to a second state, the first software development tool is denied access to decrypted source code.


Patent
Renesas Electronics America | Date: 2016-10-11

Provided herein are various systems, methods and architectures for enabling a microcontroller manufacturer to provide certain modification functionality to product vendors, while still maintaining the level of control needed to ensure that a product vendor does not inadvertently (or otherwise) create code that causes the microcontroller to not work properly. In one embodiment, this functionality can be performed through the steps of displaying an initial stack of software modules to a user, receiving instructions to modify the initial stack of software modules to create a modified stack of software modules, compiling the modified stack of software modules to produce compiled computer instructions, and flashing the embedded memory of the microcontroller with the compiled computer instructions.


Patent
Renesas Electronics America | Date: 2016-10-11

A software platform for embedded systems. In one embodiment, a package is received and stored in memory of a computer system. The package comprises a plurality of software components and a real time operating system (RTOS). The plurality of software components are configured to provide respective services to any one of a plurality of applications executing on a microcontroller. The RTOS is configured for direct exchange of information with each of the plurality of software components.


Patent
Renesas Electronics America | Date: 2015-10-26

A method and apparatus for isolating voltages while transmitting data signals. In one embodiment of the method, a modulation circuit modulates a carrier signal using an input data signal. A demodulation circuit receives the modulated carrier signal via a first capacitor coupled in series between the modulation circuit and the demodulation circuit. The demodulation circuit also receives the carrier signal via a second capacitor coupled in series between the demodulation circuit and the circuit that generates the carrier signal. The demodulation circuit demodulates the modulated carrier signal using the carrier signal.


Patent
Renesas Electronics America | Date: 2015-10-22

Various systems and methods related to displaying images from compressed data. For example, one method involves expanding a first portion of compressed data. The expanded first portion is written to a first memory location in a first memory. In response to detecting that a first segment of the expanded first portion has been read, a second portion of the compressed data is expanded. The expanded second portion is written to the first memory location.


Patent
Renesas Electronics America | Date: 2016-07-11

A trench MOSFET is disclosed that includes a semiconductor substrate having a vertically oriented trench containing a gate. The trench MOSFET further includes a source, a drain, and a conductive element. The conductive element, like the gate is contained in the trench, and extends between the gate and a bottom of the trench. The conductive element is electrically isolated from the source, the gate, and the drain. When employed in a device such as a DC-DC converter, the trench MOSFET may reduce power losses and electrical and electromagnetic noise.


Patent
Renesas Electronics America | Date: 2016-06-13

Disclosed is an apparatus for use in an ECU. In one embodiment, the apparatus include a first microcontroller coupled to a first IC. The first IC is configured to receive and process sensor signals from respective sensors in an automobile. The first IC is configured to generate first signals in response to processing the sensor signals. The first microcontroller is configured to receive and process one or more of the first signals in accordance with instructions stored in memory of the first microcontroller. The first microcontroller is configured to generate a control signal for controlling a component, such as a spark plug, of the automobile in response to the first microcontroller processing the one or more of the first signals. The first IC is also configured to generate another control signal for controlling another component of the automobile in response to processing the sensor signals.

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