Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Shinya Kiuchi

Tsuyoshi Hirashima

Jun Ikeda

Shuichi Ojima

Ryouta Hata

Takeshi Ito

Yasuhiro Kuwahara

Daisuke Sato

Tatsumi Watanabe

Bumpei Toji

Yoshiaki Owaki

Bunpei Toji

Ryota Hata

A distance measuring device using a multiple wave enables measurement of long distances with a high resolution and with a high precision by significantly reducing the circuit scale required for demultiplexing circuitry. A distance measuring device () includes an illumination unit () that illuminates using multiple modulated light having a plurality of frequencies satisfying a relationship in which one frequency is an even multiple of another frequency, a light receiving unit () that accumulates the charge of reflected light of the multiple modulated light into a plurality of accumulation units while switching an accumulation unit into which the charge is accumulated at a predetermined timing, and a distance calculation unit () that calculates a distance based on the charge.

Distance measuring device, distance measuring method, program, and integrated circuit

An image processing device includes a target correction amount calculating unit operable to calculate a target correction amount based on input image signals, a frame memory operable to store the input image signals, and a scene change amount calculating unit operable to calculate a scene change amount based on an input image signal of a present frame and an input image signal of a previous frame. Moreover, the image processing device includes a correction amount calculating unit operable to calculate a correction amount for the input image signal of the present frame, based on the target correction amount and the scene change amount, and a correcting unit operable to perform image quality correction to the input image signal of the present frame to generate a corrected input image signal, thereby outputting a corrected input image signal as an output image signal.

Image processing device, image display device, and image processing method

A technical problem is to inhibit variation in the correction between frames of a moving image while maintaining a correction amount of the overall image. The video signal display device has an attraction point determination portion (), a corrected center position storage portion (), a corrected center position determination portion (), a correction parameter creation portion (), and a correction portion (), and performs correction such that the corrected center position is gradually moved toward an attraction point. The video signal display device achieves the same effect as methods that suppress correction variability by adjusting the correction amount, while also inhibiting correction variability.

Video signal display device, video signal display method, storage medium, and integrated circuit

Attempts to achieve a higher resolution and a higher frame rate of a distance image when a distance to an object within a target space is estimated using the TOF method would cause CCD saturation due to shot noise or environment light, and lower distance precision. A distance estimation apparatus illuminates an object with illumination light for distance estimation emitted from a light source that can emit light (electromagnetic wave) having a predetermined illumination frequency, receives reflected light of the illumination light, obtains information about the distance from the apparatus to the object, generates distance image data based on the distance information, extracts edge information of a color image formed using a visible light component obtained in synchronization with the reflected light, and corrects distance information of a target part of the distance image using distance information of a neighboring part of the target part based on the edge information.

Distance estimation apparatus, distance estimation method, storage medium storing program, integrated circuit, and camera

A specific color-adjusting stage adjusts data of an inputted color with respect to a specific color. A total color-adjusting stage adjusts the data of the inputted color with respect to a total color. The specific color-adjusting stage and the total color-adjusting stage are provided in parallel. A composing unit composes linearly an output of the specific color-adjusting stage and an output of the total color-adjusting stage. When a degree that the total color-adjusting stage adjusts the data of the inputted color increases, then a degree that the specific color-adjusting stage adjusts the data of the inputted color decreases, and vice versa.

Apparatus and method for adjusting inputted color concerning total and specific colors

On the display screen of a video signal display device, when the emission amount is monotonically lowered toward the screen periphery from a certain point (screen center), if there are a plurality of regions that viewers notice easily (such as faces), then correction by monotically decreasing the emission amount cannot always raise the signal level in the regions that are noticed, and it may not be possible to obtain a sufficient sense of brightness. In the video signal processing device, a multiple object detection portion detects a plurality of objects that are included in a unit image, and a correction gain is calculated such that when the unit image is displayed on the display device, a point on the display screen at which an emission amount that is lower than the emission amount on the display screen at a point that is substantially in the center between any two objects is in a region between the points substantially in the center of the two objects, and the input video signal is corrected with that correction gain. Thus, it is possible to maintain a sense of brightness about a plurality of objects on the display screen that are readily noticed by viewers, while suppressing power usage by the display device that displays the video signal.

Video signal processing device, video signal processing method, video signal processing program, integrated circuit, and video signal display device

There is provided a display control method capable of reducing unnecessary processing and unnecessary power consumption caused by is. The display control method uses an update judgment unit () for judging whether a display content has been updated, a characteristic amount extraction unit () for obtaining the characteristic amount of the display content, a control unit () for the characteristic amount extraction unit () to reference the obtained characteristic amount and decide a correction parameter, and a display content correction unit () for correcting the display content according to the correction parameter and outputting the corrected display content to a display device (). When the update judgment unit () has judged that the display content is not updated, the control unit () cuts off power supply to the characteristic amount extraction unit ().

Display control method and device thereof

A video signal converter has a target pixel setting unit which sets up a position of a target pixel of an input video signal, a position parameter feeding unit which supplies a position parameter depending on the position of the target pixel set by the target pixel setting unit, and a characteristic amount calculating unit which calculates a characteristic amount of the input video signal. The video signal converter also has a detection-threshold setting unit which sets up a detection threshold based on the characteristic amount calculated by the characteristic amount calculating unit, a compensation parameter setting unit which determines a compensation parameter based on the position parameter supplied by the position parameter feeding unit and the detection threshold set by the detection-threshold setting unit, and a multiplier which converts a signal of the target pixel set by the target pixel setting unit in the input video signal, based on the compensation parameter determined by the compensation parameter setting unit, and outputs the conversion result.

Video signal converter and video display device

A display controller includes a video signal-analyzing unit, a video signal-adjusting unit operable to receive a video signal, to adjust the video signal in accordance with adjustment parameter information, and to feed the adjusted video signal into a display device, and a light source-controlling unit operable to feed a light source-controlling signal into a light source in accordance with light source light-emitting amount information. The video signal-analyzing unit allows timing in which the display device displays a picture in accordance with the adjusted video signal from the video signal-adjusting unit to be synchronized with timing in which the light source changes a light-emitting amount in response to the light source-controlling signal from the light source-controlling unit.

Display method, display controller, and display apparatus

A display control device is provided which includes characteristic value-calculating unit for calculating a characteristic value based on an input image signal, a conversion characteristic-calculating unit for determining a conversion characteristic from the characteristic value, and a signal-converting unit for converting the input image signals in accordance with the determined conversion characteristic. The conversion characteristic has a low level region segment, which is close to the origin of axes respectively representing the input image signal and an output image signal of the display control device, a high level region segment, which is close to a full scale point, and a middle level region segment, which is positioned between the low level region and high level region, and the slope in the middle level region is set so as to be larger than both of the slopes of the low level region and the high level region.

Display control device and display device

There is provided a correlation between adjustment of luminance of a LCD and adjustment of luminance of a backlight. Luminance average value 'Iave' is determined from display data. Luminance maximum value 'I1max' in a macro area is determined from the display data. Luminance is adjusted with reference to luminance-transformed luminance. In luminance transformation, slope average &#x201c;r1&#x201d; in a range of 0&#x2266;I&#x3c;Iave, slope average &#x201c;r2&#x201d; in a range of Iave&#x2266;I&#x3c;Imax, and slope average &#x201c;r3&#x201d; in a range of I&#x2267;Imax establish a relationship of r&#x2267;r&#x3e;rin an area defined by a horizontal axis showing luminance &#x201c;I&#x201d; and a vertical axis showing luminance-transformed luminance &#x201c;I#&#x201d;.

Image display method and apparatus

A pseudo-tone processing means color-reduces each RGB component of incoming display data using pseudo-tone processing. A frame memory stores the color-reduced display data before feeding it to a display through a drive means. Color reduction is performed so that the tone number of each RGB component after color reduction is G component&#x3e;R component&#x3e;B component. Color reduction is unequally performed in a manner which reflects contributions of each RGB component to brightness.

Growing community of inventors

Iizuka, Japan

Shinya Kiuchi