49 results about "Effective transmission rate" patented technology

An apparatus for measuring a roundtrip delay time associated with communication of multimedia data is provided. In one embodiment, the apparatus comprises a video encoder for encoding multimedia data to produce encoded multimedia data; a transmission rate controller for controlling transmission rate of the encoded multimedia data according to an effective transmission rate; and a first sending / receiving unit for sending the multimedia data via a first channel.

A power control scheme for a wireless network communication system that includes a base station and multiple wireless mobile device dynamically adjusts transmission power of a mobile device in conjunction with adjusting its bit allocation in source coding and channel coding to minimize its total power consumption while maximizing the system capacity in terms of the total effective transmission rates received by the base station. The base station sets a target signal quality value for each mobile station, and the target values are determined by the base station such that the total effective data rate from all the mobile devices is maximized under constraints of the total received power and the error protection level requirements for the mobile devices. The base station periodically measures a signal quality value, such as a signal-to-interference ratio (SIR), from transmissions received by the base from each mobile device, compares it with the measured signal quality value for that mobile device, and sends a control signal instructing the mobile device to increase or decrease its transmission power based on the result of the comparison. When the mobile device receives the control signal, it determines an amount of adjustment to its transmission power by performing a minimum calculation under constraints on the total data distortion and the maximum transmission rate to adjust the parameters for source coding, channel coding, and transmission under the constraints to result in a redistribution of power between the components that provides the minimized total power consumption.

An electronic data storage and transmission system. A plurality of electronic data objects may be associated to a plurality of electronic data indicators, and the associations may be combined. Contextual awareness of a second location may allow generation of streamlined electronic data objects. Electronic spatial data objects may be automatically contiguously combined and compression may be leveraged with combination efficiencies. Combinations of electronic data objects may be threshold limited. Transmission of electronic data may achieve effective compression and effective transmission rates exceeding a benchmark network transmission rate of an electronic data communications network.

An electronic data storage and transmission system. A plurality of electronic data objects may be associated to a plurality of electronic data indicators, and the associations may be combined. Contextual awareness of a second location may allow generation of streamlined electronic data objects. Electronic spatial data objects may be automatically contiguously combined and compression may be leveraged with combination efficiencies. Combinations of electronic data objects may be threshold limited. Transmission of electronic data may achieve effective compression and effective transmission rates exceeding a benchmark network transmission rate of an electronic data communications network.

The invention discloses a system and a method for dynamically adjusting the frame rate of a motion camera. The system comprises an image acquisition module, a processing unit, a wireless communication module, a network condition detection module and a frame rate matching module which are integrated on the motion camera, and is characterized in that the image acquisition module is used for acquiring image data in real time according to a certain image acquisition frame rate; the processing unit is used for controlling the image acquisition frame rage of the image acquisition module; the wireless communication module is used for forwarding the image data acquired by the image acquisition module in real time through a wireless network; the network condition detection module is used for detecting the communication quality of the wireless network in real time and detecting the real-time effective transmission rate of the wireless network; and the frame rate matching module is used for dynamically adjusting the image acquisition frame rate according to the real-time effective transmission rate of the wireless network so as to enable the image acquisition frame rate to be synchronously matched with the real-time effective transmission rate of the wireless network. According to the invention, the acquisition frame rate of the image acquisition module can be adjusted according to user requirements or through feedback of network conditions, thereby enabling watch delay of viewers to be always consistent with acquisition delay of the motion camera.

An aspect of this invention is a network system including subscriber apparatuses and a station-side apparatus for communicating with the subscriber apparatuses. The station-side apparatus communicates with the subscriber apparatuses using wavelengths. The station-side apparatus determines a wavelength to be used by each of at least one subscriber apparatus of the subscriber apparatuses based on effective transmission rates used by the subscriber apparatuses in communications with the station-side apparatus.

A transmission rate control method includes: measuring, at a radio base station, a reception power of a DPCH transmitted from the mobile station; extracting, at the radio base station, a transmission data block size of the uplink user data from an E-DPCCH; acquiring, at the radio base station, a transmission power ratio of an E-DPDCH to the DPCCH which corresponds to the extracted transmission data block size; calculating, at the radio base station, a reception power of the E-DPDCH based on the measured reception power and the acquired transmission power ratio; calculating, at the radio base station, a relative transmission rate of the uplink user data based on the calculated reception power; notifying, at the radio base station, the relative transmission rate to the mobile station via a E-RGCH; and controlling, at the mobile station, the transmission rate based on the notified relative transmission rate.

A method and device for determining video transmission quality. Wherein, the method is applied to a video transmission network, and the video transmission network includes a video server, network equipment and user equipment. The method includes: the network device collects the data volume of the video stream in a predetermined period, obtains the transmission duration formed by the video server transmitting the data message to the user equipment within the predetermined period, and obtains the time length obtained by removing the time period in which the data flow is zero in the predetermined period The effective transmission time, and determine the average transmission rate according to the data volume of the transmission duration, and determine the effective transmission rate according to the effective transmission time and data volume, and determine the transmission quality of the video stream through the average transmission rate and the effective transmission rate. The technical solution provided by this application can determine the transmission quality of the video stream without analyzing the content of the data message of the video stream, so as to evaluate the transmission quality of the video encrypted and transmitted using protocols such as HTTPS and UDP, and has strong practicability .

Provided are an optical disk drive and a disk format necessary for the optical disk, which are capable of eliminating or reducing a problem of reduction in an effective transfer rate attributable to track jumps caused at a certain interval when performing recording and reproduction of multiple tracks in parallel by using multiple beams, and thereby achieving a high transfer rate. A block constituting a recording unit is divided into sub-blocks, and the sub-blocks are arranged in a radial direction of a disk. Meanwhile, an optical disk drive includes a means for irradiating a disk with multiple light spots, a means for pulse modulating the spots by using the same frequency and different phases, and a means for receiving light from the spots reflected by the disk by using a single photodetector, and separating the reflected light into independent lines of signals in terms of a time domain.