Abstract: A method for generating a layout for a cell of an integrated circuit (IC) guided by design rule checking (DRC) is disclosed. In the method, a model is defined, wherein the model comprises a plurality of parameters for generating a layout of the cell. Next an initial layout for the cell can be generated according to an initial set of values for the plurality of parameters. Then design rule checking (DRC) is performed for the initial layout based on a set of design rules. If any violations are found, the corresponding violation reports will be associated with the model. Therefore, a new set of values for the plurality of parameters can be generated by analyzing the violation reports collectively based on the model. With the new set of values for the plurality of parameters and above steps repeated, until no violation is found, a “DRC clean” layout can be generated.

Abstract: Systems and methods may determine a boundary value data unit in a large data set in parallel with determining an associated index of the determined boundary value data unit into the large data set using a single instruction multiple data (SIMD) instruction set architecture and a specialized data layout of array entries. In one example, the specialized data layout of array entries combines a data value and its associated index to an array into a single array entry.

Abstract: Methods for generating a device layout are provided. First, design rules corresponding to a specific technology are received. A selection of at least one element and a parameter value corresponding to at least one parameter on the selected element are received. A draft device layout corresponding to the selected element is generated by a device generator by referencing the parameter value and the design rules. A script is then executed to modify the draft device layout to generate an updated device layout. The script includes at least one command, and when the script is executed, the at least one command is performed to modify the parameter value of the at least one parameter of the selected element and cause the device generator to delete the old draft device layout and generate a new draft device layout by referencing the modified parameter value and the design rules.

Abstract: A circuit and method for trimming an internal oscillator of a USB device that generates a clock signal as a frequency source of the USB device detect an end of packet from an input data stream to initialize a counter, identify a token packet in the data stream to detect a start of frame token packet for the counter to carry out clock counting on the clock signal to thereby obtain a count value, and compare the count value with a reference value to determine a trimming code for trimming a clock frequency of the internal oscillator.

Abstract: A method for generating a layout for a cell of an integrated circuit (IC) guided by design rule checking (DRC) is disclosed. In the method, a model is defined, wherein the model comprises a plurality of parameters for generating a layout of the cell. Next an initial layout for the cell can be generated according to an initial set of values for the plurality of parameters. Then design rule checking (DRC) is performed for the initial layout based on a set of design rules. If any violations are found, the corresponding violation reports will be associated with the model. Therefore, a new set of values for the plurality of parameters can be generated by analyzing the violation reports collectively based on the model. With the new set of values for the plurality of parameters and above steps repeated, until no violation is found, a “DRC clean” layout can be generated.

Abstract: Methods for generating a device layout are provided. First, design rules corresponding to a specific technology are received. A selection of at least one element and a parameter value corresponding to at least one parameter on the selected element are received. A draft device layout corresponding to the selected element is generated by a device generator by referencing the parameter value and the design rules. A script is then executed to modify the draft device layout to generate an updated device layout. The script includes at least one command, and when the script is executed, the at least one command is performed to modify the parameter value of the at least one parameter of the selected element and cause the device generator to delete the old draft device layout and generate a new draft device layout by referencing the modified parameter value and the design rules.

Abstract: A circuit and method for trimming an internal oscillator of a USB device that generates a clock signal as a frequency source of the USB device detect an end of packet from an input data stream to initialize a counter, identify a token packet in the data stream to detect a start of frame token packet for the counter to carry out clock counting on the clock signal to thereby obtain a count value, and compare the count value with a reference value to determine a trimming code for trimming a clock frequency of the internal oscillator.

Abstract: A voltage is generated after a touch screen is touched, and the voltage is transformed into a digital signal for detecting a touch point which the touch screen is touched. A touch sensing system includes a first switch having a first node coupled to a first voltage source, a second switch having a node coupled to a second voltage source, a first resistor coupled between the first switch and the second switch in a series connection, a comparator having a first input node coupled to a second node of the first switch, a successive approximation register (SAR) having an input node coupled to an output node of the comparator, and a simulation circuit. An output voltage of the simulation circuit is continuously adjusted by the comparator and the simulation circuit to transform the voltage generated on the touch screen into a digital signal.

Abstract: An ejectable stand for a portable media center includes a stand body and a slide switch. The stand body has a front end, a rear end and an outer surface, and the rear end has a torsion spring pushing against both the stand body and the portable media center, and the front end has a stop. The slide switch slidably is mounted on the outer surface of the stand body and has a fastening hook corresponding to the fastening lip of the portable media center, and the fastening hook includes a compression spring pushing against both the fastening hook and stop of the stand body. The compression spring provides an elastic force to drive the fastening hook to slide the slide switch on the stand body and to fasten the fastening hook and the fastening lip together.

Abstract: A computer-aided design tool generates a layout for a passive device, such as a resistor or a capacitor, to be incorporated into an integrated circuit. The layout is based on a model describing the passive device as being formed by a variable number of interconnected instances of a device unit, such as a resistor segment or a capacitor block. User-supplied Input parameter values control the number of instances of the device unit included in the passive device layout, the relative positions of the device unit instances, and characteristics of their internal layouts. The tool also generates a display of a representation of the passive device layout and provides a graphical interface enabling the user to modify various aspects of the passive device layout by altering its displayed representation.

Abstract: A voltage is generated after a touch screen is touched, and the voltage is transformed into a digital signal for detecting a touch point which the touch screen is touched. A touch sensing system includes a first switch having a first node coupled to a first voltage source, a second switch having a node coupled to a second voltage source, a first resistor coupled between the first switch and the second switch in a series connection, a comparator having a first input node coupled to a second node of the first switch, a successive approximation register (SAR) having an input node coupled to an output node of the comparator, and a simulation circuit. An output voltage of the simulation circuit is continuously adjusted by the comparator and the simulation circuit to transform the voltage generated on the touch screen into a digital signal.

Abstract: An ejectable stand for a portable media center includes a stand body and a slide switch. The stand body has a front end, a rear end and an outer surface, and the rear end has a torsion spring pushing against both the stand body and the portable media center, and the front end has a stop. The slide switch slidably is mounted on the outer surface of the stand body and has a fastening hook corresponding to the fastening lip of the portable media center, and the fastening hook includes a compression spring pushing against both the fastening hook and stop of the stand body. The compression spring provides an elastic force to drive the fastening hook to slide the slide switch on the stand body and to fasten the fastening hook and the fastening lip together.

Abstract: While transforming an analog input voltage into a digital signal including several bits, an analog-to-digital converter including a built-in self test (BIST) circuit is used for performing the transformation and compensating an offset error of the analog input voltage. The operations of the digital-to-analog converter include a self test mode and a normal mode. And each of the self test mode and the normal mode includes a sampling phase and a bit cycling phase.

Abstract: A computer-aided design tool generates a layout for a passive device, such as a resistor or a capacitor, to be incorporated into an integrated circuit. The layout is based on a model describing the passive device as being formed by a variable number of interconnected instances of a device unit, such as a resistor segment or a capacitor block. User-supplied Input parameter values control the number of instances of the device unit included in the passive device layout, the relative positions of the device unit instances, and characteristics of their internal layouts. The tool also generates a display of a representation of the passive device layout and provides a graphical interface enabling the user to modify various aspects of the passive device layout by altering its displayed representation.

Abstract: The present invention discloses a method for finding an optimized filter parameters design to meet input specifications and hardware constraints in accordance with a typical single channel digital IF programmable downconverter. Said typical single channel digital IF programmable downconverter comprises four stages, including a high speed down-sampling stage, a spectral shaping stage, a rate matching stage and an oversampling stage. According to input specifications, said method firstly determines a number of Halfband interpolation filters used in said oversampling stage, secondly obtains optimized parameters for a CIC decimation filter and a Halfband decimation filter in said high speed down-sampling stage, using as many Halfband decimation filters as possible. Then determine if it is necessary to use re-sampling FIR filter for rate matching.

Abstract: An on-system programmable and off-system programmable chip comprises a control circuit connected to an on-system programmable nonvolatile memory and an off-system programmable nonvolatile memory, and a pumping circuit connected to the on-system programmable nonvolatile memory. In a programming mode of the chip, external programming voltages are provided for programming the off-system programmable nonvolatile memory, and in an operation mode of the chip, the pumping circuit produces internal programming voltages for the on-system programmable nonvolatile memory for programming the on-system programmable nonvolatile memory.

Abstract: An end milling cutter assembly includes a handle and a cutter bar is connected to the handle by inserting an insertion into a receiving recess defined in the handle. A first bolt threadedly extends through a threaded hole defined radially in the handle and contacts a surface defined in an outer periphery of the insertion. A second bolt threadedly extends through a passage defined longitudinally in the handle and is threadedly connected to a threaded recess defined in the insertion. The total length of the assembly is shortened and the cutter bar is positioned in two different directions by the two bolts.

Abstract: An on-system programmable and off-system programmable chip comprises a control circuit connected to an on-system programmable nonvolatile memory and an off-system programmable nonvolatile memory, and a pumping circuit connected to the on-system programmable nonvolatile memory. In a programming mode of the chip, external programming voltages are provided for programming the off-system programmable nonvolatile memory, and in an operation mode of the chip, the pumping circuit produces internal programming voltages for the on-system programmable nonvolatile memory for programming the on-system programmable nonvolatile memory.

Abstract: An on-system programmable and off-system programmable chip comprises a control circuit connected to an on-system programmable nonvolatile memory and an off-system programmable nonvolatile memory, and a pumping circuit connected to the on-system programmable nonvolatile memory. In a programming mode of the chip, external programming voltages are provided for programming the off-system programmable nonvolatile memory, and in an operation mode of the chip, the pumping circuit produces internal programming voltages for the on-system programmable nonvolatile memory for programming the on-system programmable nonvolatile memory.