272 results about "Quality adjustment" patented technology

A method and apparatus for dynamic quality adjustment based on changing streaming constraints is provided. According to one aspect of the present invention, a video stream is sent to a client according to a set of streaming constraints. At least a subset of the video information in the video stream is sent from a first source. Next, a signal is received indicating a relaxation of streaming constraints corresponding to the video stream. In one embodiment, the signal is a freeze frame signal. In another embodiment, the signal is a slow motion signal. In response to the signal, a set of improved quality video information from a second source is accessed and sent to the client. According to one embodiment, the set of improved quality video information comprises a still image. According to another embodiment, the set of improved quality video information comprises a set of preprocessed video information ready to be streamed. As a result of the techniques described herein, an improved quality visual image is available for presentation on the client and, consequently, when a viewer requests a presentation rate that reduces the streaming constraints on a video streaming service, the improved quality video information may be sent using the freed-up portion of the bandwidth previously allocated to the client.

The present invention provides an apparatus for converting a video format of a digital TV and method thereof, by which various functions such as video format detection, color space conversion, chroma format conversion, gamma correction, geometric correction, image quality adjustment, and the like are implemented on one chip to support video signals of various specifications and display devices. The present invention includes an input video format detecting unit detecting a format of an input video, a format converting unit converting spatial resolution, frame rate, scan, aspect ratio, color space, and chroma format of the input video signal detected by the input video format detecting unit into a requested output format, a display characteristic correcting unit correcting the signal converted by the format converting unit to fit a display device, and an image quality adjusting unit adjusting an image quality of the corrected signal.

Quality settings established by an encoder are adjusted based on information associated with regions of interest (“ROIs”). For example, quantization step sizes can be reduced (to improve quality) or increased (to reduce bit rate). ROIs can be identified and quality settings can be adjusted based on input received from a user interface. An overlap setting can be determined for a portion of a picture that corresponds to an ROI overlap area. For example, an overlap setting is chosen from step sizes corresponding to a first overlapping ROI and a second overlapping ROI, or from relative reductions in step size corresponding to the first ROI and the second ROI. ROIs can be parameterized by information (e.g., using data structures) that indicates spatial dimensions of the ROIs and quality adjustment information (e.g., dead zone information, step size information, and quantization mode information).

A method and apparatus for dynamic quality adjustment of digital media based on changing streaming constraints is provided. A digital media server sends a digital media stream according to a set of streaming constraints to a requesting client. Audio and visual information may be sent to a requesting client together in a single stream, or separately in multiple streams. A client sends a request over a control network to the digital media server indicating information of a particular type is no longer desired. In response to receiving the signal, the video server ceases transmission of that particular type of information to the signaling client, thus relaxing streaming constraints. As a result of the techniques described herein, an improved quality digital presentation is available for the client and, consequently, when a viewer signals that a particular type of information is not desired, that particular type of information is not transmitted to the client, which thereby reduces the streaming constraints on a video streaming service, and improved quality digital media information may be sent to any client using the freed-up portion of the bandwidth previously allocated to the signaling client.

An image processing apparatus is obtained which is capable of performing gray-level correction while maintaining real-time property and accurately recognizing the feature of content obtained from an image signal. A luminance information detecting block detects a luminance information value about individual pixels from a luminance signal contained in an image signal. On the basis of the luminance information value, a content feature detecting block determines the feature of one frame of the video content, and obtains a content feature judge information value. On the basis of the content feature judge information value, a multiple content feature detecting block detects the feature of multiple frames of the video content, and outputs a multiple content feature judge information value to an image quality adjustment control block in an image quality adjusting block. On the basis of the multiple content feature information, the image quality adjustment control block calculates a correction parameter that is used when an image quality adjustment carrying-out block applies gray-level correction etc. to the image signal, and outputs the correction parameter to the image quality adjustment carrying-out block.

The invention discloses a power adjustment method for a hybrid energy storage photovoltaic power station. In the operating process of the photovoltaic power station, voltage of a direct current bus of the photovoltaic power station and voltages of a super capacitor group and a lithium battery group which are connected with the direct current bus respectively through two bidirectional direct current/direct current (DC/DC) controllers are detected in real time, active power output of a photovoltaic power supply is detected in real time, and meanwhile power output values of the super capacitor group and the lithium battery group for fulfilling an electric energy quality adjustment and control aim of the photovoltaic power station or finishing a scheduling task are quickly calculated; and running states of the two bidirectional DC/DC controllers are controlled according to a calculation result, and thus a charging process and a discharging process of the super capacitor group and the lithium battery group can be controlled. By the method, the advantage of high energy density of a lithium battery and the advantages of long circulation service life and high power density of a super capacitor are given a full play, the problems of low electric energy quality and difficulty in participation in power grid scheduling which are caused by grid-connected running of the photovoltaic power station can be solved; and popularization and application of the photovoltaic power station are facilitated.

The invention discloses an MMC (modular multiple converter) type multi-port power electronic transformer applied to an alternating current/direct current hybrid power distribution network. The multi-port power electronic transformer comprises an input level, a middle level and an output level, and are equipped with four kinds of universal interfaces: a high-voltage alternating current interface, a high-voltage direct current interface, a low-voltage alternating current interface and a low-voltage direct current interface; the input level refers to the MMC; the middle level refers to an isolating dual active full-bridge DC/DC converter; and the output level refers to a three-phase four-wire-system full-bridge inverter. Except the basic functions of voltage transformation, isolation, energy transfer and the like as a common transformer, the transformer provided by the invention can realize access of voltages of various forms with the multiple working modes, can perform functions of power flow control, electric quality adjustment and the like; and therefore, an intelligent power distribution network interface with higher applicability is configured.

Using a document scanner or other image input device of an image or document processing system to periodically scan or image printed test images from a plurality of marking engines replaces internal sensors as a feedback means in image quality control. For example, image lightness (L*) is controlled by periodically printing mid-tone test patches, scanning the printed test patches with a main job document scanner and analyzing the scanned image to determine updated marking engine actuator set points. For instance, ROS exposure and/or scorotron grid voltages are adjusted to maintain image lightness consistency between marking engines.

Media files such as MPEG-4 files are fragmented to allow for media creation, delivery, quality adjustment, and place shifting. Playback on a device can begin upon receiving a first MPEG-4 file fragment. Playback stoppage is detected and media stream position information along with quality level information is maintained at a content server. Playback can continue using the same device and media stream quality, a different media stream quality, or with a different device and different media stream quality. Additional MPEG-4 file fragments requested may be fragments corresponding to a higher or lower bit-rate stream configured for a different device associated with the user to allow a user to resume playback on a different device.

The invention relates to a building photovoltaic grid connected system which comprises a plurality of photovoltaic buildings accessed into a power distribution grid through a plurality of access points, and is characterized by comprising an energy storage station and a power-adjustable photovoltaic power station, wherein an electric energy quality coordinated control system and a plurality of electric energy quality adjustment devices are used for adjusting and controlling electric energy quality input into a plurality of low voltage systems; power distribution grid relay protection devices, anti-islanding protection devices and counting measurement and control devices are arranged in a plurality of low voltage systems; and the anti-islanding protection devices and the counting measurement and control devices are arranged at eahc access point of the photovoltaic buildings. By adopting the building photovoltaic grid connected system, short-time power fluctuation in a power distribution grid region can be relieved, and the stability of a power grid can be improved; furthermore, the harmonic content and the voltage fluctuation degree are reduced, and the quality of electric energy is controlled; the power distribution grid relay protection devices and the anti-islanding protection devices ensure security of equipment and safety of human; and the counting measurement and control devices are distributed for different systems, so that automatic and intelligent running management is realized.

A system and method for dynamically changing the display parameters of a display device. The system includes a server that obtains information about display content, environmental factors and user preferences affecting the display device. This information is used to generate initial display parameters which can be downloaded to the display device. The display device can use the initial display parameters to select final display parameters based upon sensed real-time information about the display device, the user preferences and environmental factors affecting the display device.

A control stick-shaped, programmable TV remote control device fixed to a base, including a infrared diode and circuitry for transmitting control signals to a television, VCR, or DVD. The ergonomic design provides a plurality of conveniently located switches for single handed control of a television, including a five position thumb switch controlling TV volume up, volume down, mute, channel up, and channel down. The quick access control stick switches may be user programmable. A microprocessor retains user selected and programmed television channels that are sequentially accessed by an index-finger trigger switch. Infrequently used television controls, such as picture quality adjustments, are located on a television control panel on the base. Similarly, VCR and DVD controls are also located on a control panel on the base. Batteries, mounted within the fixed base, provide weight to keep the remote control upright.

Embodiments of the invention provide a controller, in a cellular wireless network for cancellation of interference from neighboring cells. Logic in the controller determines channel quality of a radio channel between a first base station and a UE. Scheduling logic causes the first base station and a second base station to adjust the number of data streams used for communication within a time period, as a function of the channel quality. Other embodiments provide an apparatus for reducing interference in a receiver that receives N data streams. Signal processing logic receives the N data streams, where N-M of the data streams represent interference with respect to M desired data streams, and cancels the N-M data streams so as to receive the M desired data streams. The N data streams may be received from multiple base stations, or multiple UEs.

There is provided a video display device including a content control unit for displaying a video content on a display screen; a user specifying unit for specifying a user viewing a video content displayed on the display screen; and an image quality adjustment unit for adjusting the image quality of the display screen according to the user specified by the user specifying unit.

The invention relates to an environment quality detection control system and method. The system comprises an environment acquisition unit, a voice recognition unit, a network access unit, a data analysis unit and an environment quality adjustment unit. The environment acquisition unit carries out environment data acquisition and generates environment data. The voice recognition unit recognizes human voice, generates voice data and carries out simulation voice playback. The network access unit accesses the Internet, and acquires meteorological data and air quality data on the Internet, and uploads the voice data and corresponding command and environment data to the Internet cloud for storage. The data analysis unit carries out comprehensive analysis on various data and generates control data and voice feedback data. The environment quality adjustment unit adjusts the quality of indoor environment. According to the invention, environment quality detection, environment quality control, network access and voice recognition can be carried out; a user interacts with a device through a language; and the user can easily understand the outdoor environment quality for trend prediction and environment data statistics.

The invention relates to a device and method for automatically adjusting center of mass after applying load to a triaxial air-bearing turntable board. The invention solves the problems of high difficulty, low efficiency and low precision of the exiting method of manually adjusting the center of mass after applying load to the triaxial air-bearing turntable board. The device is characterized in that four mass adjusting devices are uniformly distributed on the edges of the air-bearing turntable board, with the center of the board as the origin; a mass adjusting device is fixed opposite to the vertical direction, wherein each mass adjusting support is provided with a guide rail; a stepping motor fixed at one end of the guide rail drives a mass block to slide along the guide rail; a signal output end of an electronic gradienter is connected with a signal input end of a control module; and a drive signal output end of the control module is connected with a drive signal input end of the stepping motor. The method comprises the steps of horizontal adjustment of the center of mass and vertical adjustment of the center of mass. The invention is suitable for adjusting the center of mass after applying load to the triaxial air-bearing turntable board.

A CPU 200 selects multiple objective image data GD to be pasted on ornamental image data FD, analyzes the selected multiple objective image data GD, and rates the image qualities of the respective image data GD. The CPU 200 specifies the number of plural layout locations included in the ornamental image data FD and the priority order of the plural layout locations, and allocates the multiple objective image data GD to the plural layout locations in the ornamental image data FD, based on the specified priority order and the ratings of the multiple objective image data GD. The CPU 200 executes image quality adjustment with regard to the multiple objective image data GD allocated to the plural layout locations and pastes the quality-adjusted image data GD on the ornamental image data FD according to layout control information, so as to generate resulting output image data.

An image output apparatus, according to the present invention, for outputting images to a display apparatus including an image processing unit capable of performing image quality adjustment processing differently depending on types of images, comprises a selection unit that selects images to be output to the display apparatus according to a user operation, and a control unit that gives a predetermined notice when the number of types of images selected by the selection unit is greater than a maximum adjustable number, which is the number of types of images on which the image processing unit can perform image quality adjustment processing in parallel.

A data link, e.g., an audio and/or video data link, is established from a data source, such as an audio and/or video encoder, to a data recipient via an adjustable synchronous radio channel, such as an extended Synchronous Connection-Oriented (eSCO) channel between first and second Bluetooth™ devices. A quality of the data link is determined. A transmission interval and a retransmission criterion of the adjustable synchronous radio channel and an error correction coding of the data link are adjusted responsive to the determined quality of the data link to, for example, maintain a fixed information transfer rate over the data link. The transmission interval and retransmission criterion of the adjustable synchronous radio channel and an error correction coding of the data link may be adjusted by communicating channel parameters between the first and second devices over the radio channel to adjust the transmission interval and the retransmission criterion of the adjustable synchronous radio channel.

A signal processing method for converting a signal received via a transmission path or read from a storage medium into a first audible signal, and suppressing a noise other than a desired signal contained in the first audible signal based on predetermined audio quality adjustment information, comprising steps of: in suppressing a noise other than a desired signal contained in the first audible signal to generate an enhanced signal, receiving audio quality adjustment information for adjusting audio quality; and adjusting audio quality of the enhanced signal using the audio quality adjustment information

A method to assess signal transmission quality and the adjust method thereof are proposed. First, different time points of a control signal at a receiving end are acquired and the number of signal transition in a predetermined time interval is counted. Next, the number of signal transition is recorded and compared to obtain a comparison result. The quality of control signal is then determined based on the comparison result. Besides, the parameter setting of the receiving end is adjusted according to the quality of the control signal received by the receiving end to get a better performance setting.