摘要:
Measure-controlled delay (MCD) circuits include a measure circuit and sample circuit for synchronizing an output clock to an input clock. In response to triggering of the measure circuit, sample circuits sample outputs of a measure delay array. Sample reset logic prevents output of the output clock when any of a predetermined one or more of the samples correspond to a particular logic value (i.e., logic “1” or “0”). For example, sample reset logic may prevent an MCD circuit from providing the output clock when a sample taken from the earliest sampling point of the measure delay array corresponds to logic “1.” The MCD circuit may then provide the output clock in response to a subsequent triggering for which a sample taken from the earliest sampling point is logic “0.” Phase error of the output clock is thereby reduced. MCD circuits improve response to process, voltage and temperature (PVT) variations.
摘要:
An I/O interface for configuring hard IP embedded in a FPGA includes a register load signal, a CSR initialization signal, and a register data signal. After programming the DPRIO registers, the register data controls the operation of the hard IP block. The interface supports both CSR load mode and the MDIO interface. The user-friendly I/O interface eliminates all requirements on the end-user and is virtually transparent to the end-user.
摘要:
A system and method for utilizing data stored in an EPG database for modifying advertisement information. In this way, a service provider and/or an advertiser can transmit a single advertisement to all the television stations regardless of their geographic location and other user specific information, and need not re-transmit the advertisement even if there is a change in the show's program description. When the advertisement is displayed, the correct updated information is retrieved from the EPG database and inserted into the advertisement.In one aspect, the present invention describes a method for modifying an advertisement in an EPG comprising the steps of: storing television schedule information in a first database; storing advertisement information in a second database; incorporating a portion of the television schedule information into a portion of the advertisement information to form a modified advertisement; and displaying the modified advertisement on a screen.
摘要:
A lockable storage case includes a top cover pivotably coupled to a bottom cover through a spine. The top cover includes loops or an upper lock receiving member and a lower lock receiving member defining a top cover lock insertion path. The bottom cover includes loops or an upper lock receiving member and a lower lock receiving member defining a bottom cover lock insertion path. The lower lock receiving members of both the top and bottom covers include hooks for receiving and maintaining a latch. When the top cover is closed on the bottom cover, the top and bottom cover insertion paths combine to form a combined lock insertion path. A lock for the storage case includes first and second catch mechanisms with first and second catches. To lock the storage case, the lock is inserted into the combined lock insertion path so that the catches on the lock mate with and are retained with the hooks in the top and bottom covers.
摘要:
Integrated circuit devices having fixed and programmable logic portions are made by combining a hardware description language representation of the fixed logic and a hardware description language representation of the programmable logic to create a single hardware description language representation of a device. This allows multiple portions of programmable logic, distributed where needed in whatever size needed, to be interspersed among the fixed logic. Because the behavior of the programmable logic, rather than of the user programming, is being represented, a programmable logic architecture is provided that lacks behaviors, such as combinational loops, that would cause compilation of the hardware description language to generate errors.
摘要:
Nanoelectromechanical switch systems (NEMSS) that are structured around the mechanical manipulation of nanotubes are provided. Such NEMSS can realize the functionality of, for example, automatic switches, adjustable diodes, amplifiers, inverters, variable resistors, pulse position modulators (PPMs), and transistors.In one embodiment, a nanotube is anchored at one end to a base member. The nanotube is also coupled to a voltage source. This voltage source creates an electric charge at the tip of the free-moving-end of the nanotube that is representative of the polarity and intensity of the voltage source. The free-moving end of this nanotube can be electrically controlled by applying an electric charge to a nearby charge member layer that is either of the same (repelling) or opposite (attracting) polarity of the nanotube. A contact layer is then placed in the proximity of the free-moving end of the nanotube such that when a particular electric charge is placed on the nanotube, the nanotube electrically couples the contact layer.
摘要:
A data converter for a padded protocol interface performs, on a first data sample, decoding operations requiring data from second and third data samples, while buffering the second data sample without buffering the third data sample. A state machine controlling the decoding operation waits an additional clock cycle, until the second sample has become the current sample and the third sample has become the second sample and thus is available.
摘要:
Programming software for mask-programmable logic devices provides a timing estimation to the user for the user's logic design during the compilation stage, notwithstanding that the software is not aware of the ultimate placement and routing of the design, which will be performed by the mask-programmable logic device supplier. The software includes a timing model based on actual delay measurements for different user designs in similar devices.
摘要:
Signal transmission circuitry on an integrated circuit ameliorates the effects of possible inequality in rise and fall times of buffer circuits along the transmission circuitry by providing at least one of the buffer circuits as an inverting buffer circuit and at least one other of the buffer circuits as a non-inverting buffer circuit. The invention may be of particular interest for use in clock signal distribution networks on integrated circuits such as programmable logic devices.
摘要:
A programmable logic device (PLD) is provided that includes at least one dedicated output routing channel configured to facilitate the processing of output signals generated by multiple function-specific blocks (FSBs). The output routing channel includes a plurality of functional units that may be programmably selectively chained, wherein each functional unit contains an operational block and output selection logic that are configured to programmably selectively implement any of a variety of operations (e.g., bitwise, logical, arithmetic, etc.) that may be performed on the outputs of single FSBs and/or several FSBs. In addition to the output routing channel, the PLD includes at least one input routing channel that is configured to facilitate the routing, registering, and/or selection of FSB input signals. The FSB input routing channel also includes circuitry for performing elementary processing operations.