摘要:
In a semiconductor memory device of a divided bit line system, read signals from memory cell blocks are sense-amplified together by a single differential bit line sense amplifier. The bit line sense amplifier includes a plurality of first transistors, the base electrodes of which are connected to local bit lines of the memory cell blocks, the emitter electrodes of which are commonly connected to corresponding main bit lines, and the collector electrodes of which are connected to a first power supply node, a second transistor, which forms a differential pair with each of the first transistors, the base electrode of which is applied with a reference bias potential, and the emitter electrode of which is connected to the main bit lines, a current source connected between the emitter electrode of the second transistor, and a second power supply node, and a load circuit connected between the collector electrode of the second transistor and the first power supply node. The main bit lines with a heavy load can be driven by the emitters having a large driving force, and the outputs from the memory cell blocks can be sensed without going through selectors, thus attaining high-speed read access.
摘要:
A semiconductor integrated circuit includes a bias voltage generating circuit and first- and second-level signal generating circuits. The bias voltage generating circuit includes a bandgap reference circuit for generating a first fixed voltage as a first bias voltage and a second fixed voltage. A second bias voltage is generated on the basis of the second fixed voltage. The second-level signal generating circuit receives a predetermined first-level signal and generates a predetermined second-level signal on the basis of the first and second bias voltages generated by the bias voltage generating circuit. The first-level signal generating circuit receives the predetermined second-level signal and generates the predetermined first-level signal on the basis of the first and second bias voltages generated by the bias voltage generating circuit.
摘要:
A logic operation circuit includes an exclusive-OR circuit for receiving first and second logic sum signals of preceeding stages, a sum signal selection circuit for selectively generating a carry output signal or an inverted signal thereof as a carry output signal in accordance with an output signal from the exclusive-OR circuit, and a carry output signal selection circuit for selectively generating the carry input signal or the first logic sum signal as a sum signal in accordance with the output signal from the exclusive-OR circuit. The exclusive-OR circuit includes a double balance type differential amplifier connected between first and second power source terminals, and the sum signal selection circuit includes a double balance differential amplifier operated in accordance with the output signal from the exclusive-OR circuit and the carry input signal and connected between the first and second power source terminals.
摘要:
A tri-state buffer circuit according to the present invention comprises a switching circuit connected to an input terminal (IN), tri-state and inverted tri-state input terminals (T, T), and a first power supply terminal for generating first and second switching signals (A, B) which have a first and second levels, respectively, only when the tri-state signal is on a first level, regardless the level of the input signal; an inverter circuit connected to said switching circuit, and the first power supply terminal for inverting the first switching signal (A) from said switching circuit as an output signal; a selection circuit connected to said switching circuit and inverter circuit for maintaining a signal, which have a second level, equal to the inverted signal only when the tri-state signal is on first level; a first type bipolar transistor whose base is connected to said inverter circuit, whose collecter is connected to the first power supply terminal, and whose emitter is connected to the output terminal of the tri-state circuit; and a first type bipolar transister whose base is connected to said selection circuit, whose collecter is connected to the output terminal of the tri-state circuit, and whose emitter is connected to a second power supply terminal.
摘要:
A CPU performs the steps of: (a) causing a compression/decompression processor to decompress the compressed data of one of three bands in the data area except for the first block in the band, and storing decompressed bitmap data in the data area; (b) rasterizing each of the intermediate data blocks in the band and synthesizing the rasterized data and the decompressed bitmap data in the band; and causing the compression/decompression processor to compress the synthesized bitmap data and storing the compressed data in the data area. The CPU performs the steps (a) to (c) in different respective tasks in parallel, and performs the steps (a) to (c) in the order of (a), (b) (c) for each of the intermediate code blocks in each of the bands while using the 1st to the 3rd bitmap data area in turn for each of the steps (a) to (c).
摘要:
In a display region, pixel electrodes are arranged with a predetermined pitch in a matrix. Dummy pixel electrodes provided in a dummy display region surrounding the display region are formed from the same layer as the pixel electrodes, and are arranged in an island shape so as to have the same size and pitch as the pixel electrodes. The dummy pixel electrodes are connected to each other via a wire positioned under the pixel electrodes.
摘要:
An image forming apparatus includes a processor, and a storage controller that writes band data to a storage device and reads the band data. The processor: (a) generates a write-side process and a read-side process; (b) generates a write-side thread by the write-side process; (c) generates a read-side thread and a file read thread by the read-side process; (d) notifies the read-side process of an identifier within the storage device, and causes the storage controller to sequentially write the band data; and (e) requests the file read thread to cause the storage controller to sequentially read out the band data corresponding to the identifier and causes the storage controller to sequentially read out the band data and one or more subsequent band data.
摘要:
According to one embodiment, a semiconductor device includes an electrostatic actuator including first and second lower electrodes, an upper electrode, and an insulating film provided between the upper electrode and the first and second lower electrodes, the first lower electrode and upper electrode configuring a first variable capacitance element, the second lower electrode and upper electrode configuring a second variable capacitance element, a first fixed capacitance element connected to the first lower electrode, a second fixed capacitance element connected to the second lower electrode, and a detection circuit connected to the upper electrode and configured to detect a charge amount stored in the insulating film.
摘要:
A semiconductor integrated circuit device includes: a first inverter constituted by a first transistor configured to charge a charge point based on an input signal, and a second transistor configured to discharge a discharge point based on the input signal; a P-type third transistor and an N-type fourth transistor with drain-source paths provided in parallel between the charge point and the discharge point; and a second inverter configured to invert a potential of the charge point or the discharge point and supply the inverted potential to gates of the third and fourth transistors, and obtain a delay signal of the input signal from the charge point or the discharge point. The semiconductor integrated circuit device secures a sufficient delay time with a small area.
摘要:
In at least one embodiment of the disclosure, a liquid crystal device comprises a plurality of conductive patterns formed of a conductive film in a peripheral region between an image display region and a sealing member. The conductive patterns are formed at a same layer as a plurality of pixel electrodes. An insulation film is formed on a side facing a counter substrate so as to correspond to the plurality of conductive patterns and a plurality of pixel electrodes. Peripheral electrodes are formed in a region overlapping the plurality of conductive patterns in a plan view on a side on which the counter substrate is located so as to correspond to the insulation film in the peripheral region.