摘要:
There are provided a liquid crystal drive method, a liquid crystal display system and a liquid crystal drive control device, which can realize low power consumption at an alternating current drive of a liquid crystal panel. A common voltage given to a common electrode of a liquid crystal is switched between a positive phase and a negative phase. Display data is converted in such a manner that first display data and second display data selecting two of a plurality of gradation voltages in which magnitudes of potential differences in the pixel electrodes in the positive phase and the negative phase with reference to the common voltage corresponding to display data in a display memory are the same are in the same bit pattern except for one specified bit. For example, bit allocation of positive and negative gradation display data is made in such a manner that low-order bits other than the highest order bit are symmetric up and down in binary with respect to the middle.
摘要:
There are provided a liquid crystal drive method, a liquid crystal display system and a liquid crystal drive control device, which can realize low power consumption at an alternating current drive of a liquid crystal panel. A common voltage given to a common electrode of a liquid crystal is switched between a positive phase and a negative phase. Display data is converted in such a manner that first display data and second display data selecting two of a plurality of gradation voltages in which magnitudes of potential differences in the pixel electrodes in the positive phase and the negative phase with reference to the common voltage corresponding to display data in a display memory are the same are in the same bit pattern except for one specified bit. For example, bit allocation of positive and negative gradation display data is made in such a manner that low-order bits other than the highest order bit are symmetric up and down in binary with respect to the middle.
摘要:
A semiconductor integrated circuit for driving a liquid crystal display, capable of improving the quality of an image displayed by preventing an imbalance between the outputs of a pair of amplifiers for positive voltage and negative voltage for AC driving of the liquid crystal panel and transmission of noise from one amplifier to the other amplifier is realized. A driver circuit that generates and outputs dive signals to be applied to signal lines of the liquid crystal panel includes decoder circuits, each of which selects a gray-scale voltage corresponding to image data. It also includes amplifiers for positive voltage which perform impedance conversion of positive voltages selected by the decoder circuits and amplifiers for negative voltage which perform impedance conversion of negative voltages selected by the decoder circuits. Furthermore, it includes an AC output section consisting of switch circuits, each of which alternately conducts an output of each amplifier for positive voltage to one of two adjacent output terminals and an output of each amplifier for negative voltage to the other one of the two adjacent terminals and vice versa. Two pairs of supply voltages having the same potential difference are generated as supply voltages to the amplifiers for positive voltage and the amplifiers for negative voltage and supplied through separate power supply lines.
摘要:
A semiconductor integrated circuit for driving a liquid crystal display, capable of improving the quality of an image displayed by preventing an imbalance between the outputs of a pair of amplifiers for positive voltage and negative voltage for AC driving of the liquid crystal panel and transmission of noise from one amplifier to the other amplifier is realized. A driver circuit that generates and outputs dive signals to be applied to signal lines of the liquid crystal panel includes decoder circuits, each of which selects a gray-scale voltage corresponding to image data. It also includes amplifiers for positive voltage which perform impedance conversion of positive voltages selected by the decoder circuits and amplifiers for negative voltage which perform impedance conversion of negative voltages selected by the decoder circuits. Furthermore, it includes an AC output section consisting of switch circuits, each of which alternately conducts an output of each amplifier for positive voltage to one of two adjacent output terminals and an output of each amplifier for negative voltage to the other one of the two adjacent terminals and vice versa. Two pairs of supply voltages having the same potential difference are generated as supply voltages to the amplifiers for positive voltage and the amplifiers for negative voltage and supplied through separate power supply lines.
摘要:
A printing system, responsive to a request from an image forming apparatus, applies general-purpose print setting to print setting information of a printer driver in the image forming apparatus specified in the request, applies dedicated print setting using a ticket in a print job stored in a storage device to the print setting information to which the general-purpose print setting has been applied, reflects the print setting information of the printer driver to which the dedicated print setting has been applied, on the print setting information in the print job, generates a print job including the reflected print setting information in the print job and print data in the print job, and outputs the generated print job to the image forming apparatus.
摘要:
A semiconductor device includes a plurality of sets of external drive terminals in a marginal region along one long side of a rectangular semiconductor substrate, a plurality of sets of ESD protection circuits arranged in the marginal region and coupled to corresponding sets of the drive terminals, and a plurality of output circuits coupled to corresponding sets of the drive terminals. Each set of drive terminals in a plurality of n columns along a Y direction is laid out in a staggered arrangement with drive terminals in adjacent columns shifted relative to each other. Each output circuit includes n output units associated with n drive terminals of each set and arranged in one column in an X direction. By the arrangement, the drive terminals can be arranged at a narrower pitch, and the total width for n output units can be compacted into that of one output circuit.
摘要:
An image processing apparatus includes a resolution determining section that determines, for a selected combination of an input terminal and an output terminal, an input set resolution set for an input terminal to be a processing resolution, when an output set resolution of an output terminal is set to “Source”; and ignores the input set resolution set for the input terminal and determines the output set resolution set for the output terminal to be a processing resolution, when the output set resolution of the output terminal is set to other than “Source”.
摘要:
An image forming apparatus includes an image forming unit having an exposure unit configured to irradiate each of a plurality of photosensitive members with a corresponding light beam, a light amount control unit configured to control a light amount of the light beams, a plurality of developing units configured to develop electrostatic latent images formed on the photosensitive members by exposure with the light beams, and a transfer unit configured to transfer toner images formed on the photosensitive members onto an image carrier; a pattern forming unit configured to control the image forming unit to form a misalignment detection pattern for detecting a relative misalignment between the toner images transferred onto the image carrier; a pattern reading unit configured to read the misalignment detection pattern; and a correction unit configured to correct the relative misalignment between the toner images based on the reading result obtained by the pattern reading unit.
摘要:
A control unit decreases the potential difference according to an increase in the drive amounts of the image bearing member and the developer bearing member, based on a first information about a drive amount of the image bearing member and second information about a drive amount of the developer bearing member, in a case that an integrated value of the first information and the second information from initial installation or replacement of the developing device is greater than a predetermined value.
摘要:
An earpiece, an electronic device, and a communication device, capable of reducing the influence of leakage of sounds from a clearance between the earpiece and an ear not to need an addition of parts are provided. An earpiece (100) includes an electromechanical acoustic transducer (10) having a diaphragm and for generating a sound by vibrating the diaphragm in response to an electric signal, a case (11) on which a sound hole (12) is provided and in which the electromechanical acoustic transducer (10) is housed, and a holding member (13) for holding the electromechanical acoustic transducer (10) in the case (11). The electromechanical acoustic transducer (10) has a sound pressure-frequency characteristic that is compensated in advance such that the sound pressure-frequency characteristic is planarized in a condition that the generated sound is leaked from a user's ear (14) being covered with the case (11).