56results about How to "Improve video performance" patented technology

The invention relates to a video encoder (201) for encoding a video signal. The video encoder comprises a segmentation processor (207) which divides the picture into picture regions. Preferably, picture regions having a high degree of flatness or uniformity are determined in this way. A characteristics processor (209) determine a spatial frequency characteristic for each picture region, and a coding controller (211) selects an encoding block size, such as a prediction block size for motion estimation, in response to the spatial frequency characteristic. An encode processor (213) encodes the picture using the selected encoding block size. Specifically, increasing block sizes are selected for increasing degrees of uniformity or flatness indicated by the spatial frequency characteristic. Thereby, an increasing proportion of high frequency components and a consistent choice of encoding block sizes are maintained, and thus the coding artefacts from many encoders having variable prediction block sizes is reduced. The invention is particularly suitable for H.264 and similar encoders.

A game controller, which is used in conjunction with a game device, includes a housing, a light-emitting device provided within the housing for producing flashing light of varying intensity, and a circuitry provided within the housing and generating control signals in response to signals received from the game device to control the intensity and the flashing frequency of the light emitted by the light-emitting device.

The present disclosure relates to a live broadcast processing method, device, terminal equipment and system. The method includes: establishing a live connection with the guest client; receiving the guest audio stream sent by the guest client; synthesizing the local anchor audio stream and the guest audio stream to obtain the target audio stream; sending the audio stream to the server The target audio stream, so that the server sends the target audio stream to the audience client and the guest client. The solution of the present disclosure can solve the problem of communication delay during multi-person live broadcast and improve user experience.

A view finder device for enabling an ordinary video camera to be used for broadcast use. The view finder device includes a control signal input for receiving control signals including a video-select signal; a camera video signal input for receiving a camera video signal from a video camera; an interrupt video signal input for receiving an interrupt video signal from a video interrupt source which is different from the video camera; a video selector for displaying either the camera video signal or the interrupt video signal, according to the video-select signal; a display controller for controlling display of a video selected by the video selector; and a control signal output for outputting the control signals after the video-select signal is removed therefrom.

An electronic device comprises a camera and a screen. The camera is fixed into the screen. The screen includes a display panel used for displaying images, and the display panel includes a front surface facing users. The camera includes a lens element and an image converter, the lens element includes a lens and a mirror which forms an acute angle with the lens, and the lens is disposed on a side, away from the front surface, of the display panel. According to the electronic device provided by the invention, incoming light passes through the display panel and enters the lens, the mirror reflects the incoming light to the image converter, and the image converter generates a corresponding image according to the incoming light reflected to the image converter. Meanwhile, the camera is fixed between the display panel and a light emitting module, which is conducive to the miniaturization of the electronic device, helps to prevent the accumulation of dust or scratching of the lens element, and improves the video effect.

An object of the present invention is to provide a driving method of a liquid crystal display device for improvement of image quality and a liquid crystal display device in which the driving method is used. One frame period is divided up into an n (n: integer, n≧3) number of periods (hereinafter referred to as subframe periods). Furthermore, a voltage is applied to a liquid crystal so as to correct for a loss in luminance resulting from response speed of the liquid crystal. The voltage for correction is applied during subframe periods other than the first subframe period.

Disclosed are solutions for improving Internet video streaming. A first number is determined based on one or more parameters, including network conditions. A second number is then determined corresponding to a number of video segments that is greater than or equal in size to a third number determined based on a bandwidth-delay product of the network to a remote machine. The second number of video segments is then requested in a pipelined fashion. Pipelined requests are stopped when a predetermined size of the video has been requested that is greater than or equal to the first number. Alternatively, a request is sent to the remote machine to send a portion of the video, where the size of the portion of the video is equal to the first number or equal to the size of video remaining if less than the first number. Combined with pipelining, the approach achieves near-optimal throughput and fast bitrate adaptation, regardless of control plane algorithm.

The embodiment of the invention provides an audio and video playing device which comprises a second audio and video processing device for converting video data of a second format from a second source signal interface into video data of a first format and processing the audio data from the second source signal interface and a first audio and video processing device, the first audio and video processing device used for processing the audio data from a first source signal interface and the video data of the first format from the first source signal interface and the second audio and video processing device, a sound box system used for receiving the processed audio data from the second audio and video processing device and playing the audio data, and a data transmission device for sending the video data processed by the first audio and video processing device to a display device through a wired or wireless transmission mode. According to the embodiment of the invention, the processing ability of audio and video data can be improved, and the cost is saved.

The invention provides a method for adjusting dynamic exposure of a camera in automatic driving. The method comprises the following steps: (1), demarcating the camera to obtain the maximal exposure time Emax and the minimal exposure time Emin of the camera and the maximal grey level Gmax and the minimal grey level Gmin of an image photographed by the camera; (2), extracting an image in the current frame of the camera, comparing the average grey level Gavg of the image in the current frame with the Gmax and the Gmin so as to correct the Gavg, and obtaining a pre-adjusted exposure time Etmp of the current image according to the Gavg and the exposure time Ex' of the previous frame of image; and (3), correcting the Etmp after comparing the Etmp with the Emax and the Emin so as to obtain the optimal exposure time Ex, which can be used when the next frame of image is acquired, and then, returning to the step (2). According to the invention, dynamic adjustment of the exposure time of the camera in motion is realized; therefore, the camera is adaptive to change of surroundings of a high-speed mobile intelligent vehicle; the optimal exposure is continuously adjusted along with change of times and environments; and thus, the image definition obtained by the camera is obviously improved.