Abstract: A video-information-processing apparatus comprising: a smoothing unit to smooth input video information of a plurality of pixels and generate smoothed video information; a subtraction unit to calculate a gradation difference between the input and smoothed video information; a mixing unit to mix the input and smoothed video information at a ratio corresponding to the difference and generate mixed video information; a determination unit to determine whether or not a peripheral pixel region, including each pixel in the input video information and pixels located around the pixel, is a low-frequency region not including a gradation change greater than or equal to a predetermined gradation change; and an output-selection unit to output the mixed video information when the determination unit determines that the peripheral pixel region is the low-frequency region and output the input video information when the determination unit determines that the peripheral pixel region is not the low frequency region.

Abstract: An image signal processing apparatus for converting an interlace signal which creates a frame image by alternately displaying an odd field and an even field on a single screen into a progressive signal, includes a line memory for storing the interlace signal, a writing/reading portion for writing/reading the interlace signal into/from the line memory, a signal generation portion for generating a prescribed signal, a selector for selectively outputting the interlace signal from the line memory or the prescribed signal from the signal generation portion, and a controller for controlling signal selection by the selector.

Abstract: Video from a backup camera (10) is displayed early on an LCD panel (16). During startup of a system, a display controller (14) performs settings according to preset data from a memory (20), a video signal directly supplied from the backup camera (10) is selected by a selector (54), subjected to resolution conversion and supplied to an LCD panel (16). On the other hand, after the system controller (12) has been started up, a video signal supplied from the system controller (12) is selected by the selector (54) and supplied to the LCD panel (16).

Abstract: A video-information-processing apparatus comprising: a smoothing unit to smooth input video information of a plurality of pixels and generate smoothed video information; a subtraction unit to calculate a gradation difference between the input and smoothed video information; a mixing unit to mix the input and smoothed video information at a ratio corresponding to the difference and generate mixed video information; a determination unit to determine whether or not a peripheral pixel region, including each pixel in the input video information and pixels located around the pixel, is a low-frequency region not including a gradation change greater than or equal to a predetermined gradation change; and an output-selection unit to output the mixed video information when the determination unit determines that the peripheral pixel region is the low-frequency region and output the input video information when the determination unit determines that the peripheral pixel region is not the low frequency region.

Abstract: In a liquid crystal television, a display controller prevents burning of a liquid crystal panel due to irregularity in a synchronization signal. A counter of a liquid crystal display controller detects a period of a horizontal synchronization signal and a vertical synchronization signal. A comparator compares a count value with a predetermined minimum value Min and maximum value Max. When the count value is out of a range, a synchronization pulse generator generates a synchronization pulse at a time when the period falls within a predetermined range. A selector outputs an input synchronization signal when the period is within the range and outputs the synchronization pulse obtained from the synchronization pulse generator when the period is out of the range.

Abstract: According to preferred embodiments of the present invention, an image signal processing apparatus for converting an interlace signal which creates a frame image by alternately displaying an odd field and an even field on a single screen into a progressive signal, includes a line memory for storing the interlace signal, a writing/reading portion for writing/reading the interlace signal into/from the line memory, a signal generation portion for generating a prescribed signal, a selector for selectively outputting the interlace signal from the line memory or the prescribed signal from the signal generation portion, and a controller for controlling signal selection by the selector.

Abstract: Disclosed is a video signal processing apparatus comprising a plurality of line memories to which in sequence input video signal data is written on a line-by-line basis; a timing controller for controlling a timing to write video signal data to the plurality of line memories and a timing to read video signal data from the plurality of line memories; a computation output portion for computing video signal data read from the plurality of line memories and outputting video signal data differing in resolution which is determined by a pixel count in the horizontal direction and a line count in the vertical direction; and a line controller which vary the pixel count in specified lines of video signal data obtained from the computation output portion, depending on a conversion rate of the video signal data resolution.

Abstract: In a liquid crystal television, a display controller prevents burning of a liquid crystal panel due to irregularity in a synchronization signal. A counter of a liquid crystal display controller detects a period of a horizontal synchronization signal and a vertical synchronization signal. A comparator compares a count value with a predetermined minimum value Min and maximum value Max. When the count value is out of a range, a synchronization pulse generator generates a synchronization pulse at a time when the period falls within a predetermined range. A selector outputs an input synchronization signal when the period is within the range and outputs the synchronization pulse obtained from the synchronization pulse generator when the period is out of the range.

Abstract: Disclosed is a video signal processing apparatus comprising a plurality of line memories to which in sequence input video signal data is written on a line-by-line basis; a timing controller for controlling a timing to write video signal data to the plurality of line memories and a timing to read video signal data from the plurality of line memories; a computation output portion for computing video signal data read from the plurality of line memories and outputting video signal data differing in resolution which is determined by a pixel count in the horizontal direction and a line count in the vertical direction; and a line controller which vary the pixel count in specified lines of video signal data obtained from the computation output portion, depending on a conversion rate of the video signal data resolution.

Abstract: An input video signal is reduced according to size reduction ratio data K in an input processing section and written into alternate field memories. The written reduced video signal is alternately read from the field memories in a display processing section and processed for window displaying. Video reduction control sections are provided on the respective input and display sides, so that various signals, such as RHOLD, ADCANS, RACK signals, etc., are exchanged therebetween. When a size reduction ratio data K is changed, on the display side a read memory is fixed on a first field memory and size data is fixed, while on the write side video data is written into a second field memory, based on the new reduction ratio. After updating the size data on the display side, video data is read from the second field memory at the new reduction ratio.

Abstract: A fiber coupler includes first and second optical fiber groups and a fused-elongated region. The first optical fiber group is obtained by parallelly arranging a plurality of optical fibers on a single plane, a coating of each of the optical fibers being removed throughout a predetermined portion at the same position as that of an adjacent optical fiber in a longitudinal direction. The second optical fiber group is obtained by parallelly arranging adjacent optical fibers on a predetermined plane parallel to an arrange plane of the first optical fiber group at the same pitch as that of the first optical fiber group, a coating of each of the optical fibers being removed throughout a predetermined portion at the same position as that of an adjacent optical fiber in a longitudinal direction as the first optical fiber group.

Abstract: An improved process for the production of optical fiber porous preforms of predetermined refractive index distribution by the vapor-phase deposition method is disclosed wherein a glass material and a dopant material are subjected to flame oxidation by the use of an oxyhydrogen burner to form fine glass particles which are deposited on one end of a supporting rod adapted to move apart from the oxyhydrogen burner while rotating to allow a rod-like porous preform to grow thereon. The improved process is characterized in that the correlation between the shape of the deposition face and the refractive index distribution is previously determined mathematically, and on a basis of the correlation therebetween, a process variable such as the distance between the porous preform and the burner is adjusted to produce the desired shape of the deposition face whereby there can be obtained an optimum refractive index distribution.

Abstract: A method for producing an optical fiber preform comprising injecting a glass raw material, a gaseous fluorine-containing material and oxygen gas from a first nozzle, inactive gas from a second nozzle which surrounds the first nozzle and hydrogen gas from a third nozzle which surrounds the second nozzle, flame hydrolyzing the glass raw material to synthesis fine glass particles and depositing the fine glass particles on a tip of a rotating seed rod to produce the optical fiber preform containing fluorine.