摘要:
A gain control signal is produced according to the difference in level between the signal obtained by scanning the white reference plate and the previously stored standard signal. Based on the gain control signal, the amplification level of the signal obtained by scanning the document is adjusted by a gain controller, and then the resulting signal is converted into a digital signal and supplied outside.
摘要:
An apparatus including an integrated circuit for processing analog image signals supplied from a CCD sensor. The integrated circuit has a photodiode line array between a pair of shift gates and a pair of CCD shift registers, in that order. The integrated circuit further includes logic that combines the respective output signals of the CCD shift registers as signals either in-phase or out-of-phase (in opposite phase) with respect to each other, and a selecting signal generating device to generate a signal that selects, or indicates the selected, one or the other of the two combinations.
摘要:
An integrated circuit for processing an analog image signal obtained from a CCD, etc. and converting the processed image signal to a digital image signal. The integrated circuit includes a circuit for adjusting an offset voltage included in the analog image signal, a circuit for sampling/holding the image signal from the adjusting circuit, a variable amplifier for varying an amplitude of the image signal output from the sampling/holding circuit, an analog/digital converter for converting the image signal from the variable amplifier to a digital signal, and a circuit for detecting a DC component included in the digital image signal and providing the detection result to the adjusting circuit. Correction of a DC voltage component of the analog image signal and amplitude adjustment of the analog image signal can be performed by using a single LSI, and the LSI can be connected to various types of CCDs without using an additional circuit.
摘要:
An image-reading device, in which the 1-bit signals a CCD line sensor has generated from the light applied from an illumination lamp and reflected from an original are shading-corrected, thereby forming image data. Before scanning the original, a black reference signal, a white reference signal at a level higher than that of the black reference level, and three intermediate reference signals are generated and stored into memories. During the scanning of the original, a selector selects two of the reference signals in accordance with the level of each signal output by the CCD line sensor, and the difference between the signal output by the sensor and the black reference signal is shading-corrected, by using the two reference signals selected by the selector. The signal output by the CCD line sensor can therefore made linearly proportional to the intensity of the input light, even if the CCD line sensor has no linear input-output characteristic or even if the photoelectric elements of the sensor have different input-output characteristics.
摘要:
A grounding structure of a fuel tank equipped with a lid body closing an opening of the fuel tank made of resin is characterized by being equipped with a ring-shaped member made of metal fixed on the periphery of the opening, and a retainer made of metal fixing the lid body on the ring-shaped member, wherein an electrically grounded member in the vicinity of the lid body is electrically connected to at least one of the ring-shaped member and retainer, and grounding is performed through at least one of the ring-shaped member and retainer.
摘要:
An image forming apparatus comprises a control main body, and reading and recording main bodies detachable to the control main body. The reading main body includes a first memory for storing a read image data memory of original. The recording main body includes a second memory for storing the read image data. The control main body includes a data transmitting circuit for transmitting the image data stored in the first memory to the second memory when the reading and recording main bodies are mounted on the control main body. The recording and reading main body does not only operate alone but also in a state combined with the control main body.
摘要:
An image reading apparatus which has position deviated line sensors. The line sensors are formed by charge coupled devices which are arranged in two staggered rows. The signal from one of the charge coupled devices is delayed for a predetermined period corresponding to the distance between the rows, the speed of scanning and the reading density of the original. An actual timing deviation is calculated to delay one signal relative to the other so that the two signals will be output at the same time.
摘要:
An office machine is disclosed, which comprises a second (lower) unit and a first (upper) unit capable of being opened and closed with respect to the lower unit. A plurality of light-emitting elements and a plurality of light-receiving elements are provided in the lower unit, and a plurality of light-emitting elements and a plurality of light-receiving elements are provided in the upper unit. The control signal and data signal are fed to the light-emitting elements to be converted into optical on-off signal. The light-receiving elements receive the optical signal and convert it into electric signal which is fed to necessary parts. Control signal lines and data signal lines between the two units are thus replaced with an optical relay.
摘要:
A ballast retaining structure according to the present invention is a ballast retaining structure in which ballast laid on the roadbed is tamped to thereby retain a track bed extended in an extending direction of the roadbed from a transverse direction thereof, and includes a layered body formed by a plurality of bag-like objects, each being formed in a bag shape and containing the ballast, which are stacked from a toe of slope to a top of slope of the track bed such that each of the bag-like objects is tilted to decline from an outer end portion to an inner end portion thereof.
摘要:
A ballast retaining structure according to the present invention is a ballast retaining structure in which ballast laid on the roadbed is tamped to thereby retain a track bed extended in an extending direction of the roadbed from a transverse direction thereof, and includes a layered body formed by a plurality of bag-like objects, each being formed in a bag shape and containing the ballast, which are stacked from a toe of slope to a top of slope of the track bed such that each of the bag-like objects is tilted to decline from an outer end portion to an inner end portion thereof.