Eureka-AI is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Eureka AI

900 results about "Transmission bandwidth" patented technology

Transmission bandwidth is the actual width of the transmitted signal. It is often narrower than the channel bandwidth to allow practical transmit filters to be used to ensure that the modulated signal does not spread out beyond the channel bandwidth. An example. LTE has a maximum 20 MHz channel bandwidth.

Self-adapting transmission method and system in ascending honeycomb video communication

InactiveCN101222296AImprove playback qualityReduce packet loss eventsError preventionData streamPacket loss
The invention discloses a self-adaptive transmission method and a self-adaptive transmission system in the uplink cellular video communication of the wireless multimedia communication technical field. The method is that: a feedback-based channel effectively transmits bandwidth perceiving; the sending speed of a data flow is adjusted according to the perceived effective transmission bandwidth, the adjustment of the sending rate is realized by changing the packet length of the data flow; two-stage information resource rate control based on cache cleaning and rate control of an encoder is used. The device comprises a sending end, a transmission network and a receiving end, wherein the sending end comprises a video encoding unit and a transmission control unit, the receiving end comprises a transmission control unit and a video decoding unit, the sending end and the receiving end transmit messages through the transmission network. The sending rate of the invention can automatically adapt to the change of the channel bandwidth, decreases the probability of packet loss caused by the fluctuation of the wireless channel bandwidth, and realizes that the customer side can obtain the best possible playing quality under the condition of constant change of network operation conditions.

Method and system in a wireless communications network for the simultaneous transmission of both voice and non-voice data over a single radio frequency channel

A method and system in a wireless communications network for the simultaneous transmission of voice and non-voice data over a single dedicated radio frequency channel to a mobile unit having a primary transmission bandwidth. Initially, voice data are transmitted to a mobile unit via a primary time interval within a single dedicated radio frequency channel. An unoccupied secondary time interval available to the mobile unit is then identified. Thereafter, non-voice data are transmitted to the mobile unit via the secondary time interval, in response to identifying the secondary time interval. The primary transmission bandwidth of the mobile unit is next automatically broadened to encompass both the primary time interval and the secondary time interval. Finally, the primary time interval and the secondary time interval are linked within the single dedicated radio frequency channel to permit the subsequent processing of the voice and non-voice data as a single transmitted unit over the single dedicated radio frequency channel. In identifying an unoccupied secondary time interval available to the mobile unit, time intervals positioned adjacent the primary time interval are examined to determine occupancy. If an adjacent time interval is determined to be occupied, the call being processed within that adjacent time interval is handed off to another channel or mobile unit, leaving that adjacent time interval open and unoccupied. The non-voice data is then transmitted to the mobile unit via the adjacent time interval, such that the adjacent time interval comprises an identified secondary time interval available to the mobile unit. The wireless communications network may be composed of a cellular telephone network operating alone or in association with landline-based components.

Method and apparatus for faster-than-real-time lossless compression and decompression of images

The present invention is a method and apparatus for compressing and decompressing data. In particular, the present invention provides for (de-)compressing naturalistic color-image and moving-image data, including high-precision and high-definition formats, with zero information loss, one-sample latency and in faster than real time on common computing platforms, resulting in doubled transmission, storage, and playback speed and doubled transmission bandwidth and storage capacity, and hence in doubled throughput for non-CPU-bound image-editing tasks in comparison with uncompressed formats. The present invention uses a nearly symmetrical compression-decompression scheme that provides temporal, spatial, and spectral compression, using a reversible condensing/decondensing filter, context reducer, and encoder/decoder. In the preferred embodiment of the invention, the compression filter is implemented as a cascade of quasilinear feedforward filters, with temporal, multidimensional spatial, and spectral stages, where appropriate, in that order, whose support consists of adjacent causal samples of the respective image. The decompressor cascades quasilinear feedback inverse filters in the reverse order. The filters can be implemented with mere integer addition, subtraction, and either one-dimensional table lookup or constant multiplication and binary shifting, depending on the computing environment Tables permit the data precision to be constrained throughout to that of the image samples. The encoder uses a table of prefix codes roughly inversely proportional in length to their probability, while the decoder uses chunked decode tables for accelerated lookup. In the fastest and simplest mode, the code tables are context-independent. For greater power, at the cost of a reduction in speed, the code tables are based on the temporal, multidimensional spatial, and spectral adjacent causal residue samples, where contexts with similar probability distributions are incoherently collapsed by a context reducer using one-dimensional lookup tables followed by implicitly multidimensional lookup tables, to minimize the overall table size. The invention's minimal resource requirements makes it ideal for implementation in either hardware or software.

Processing method, device and system of mass log information

The invention discloses a processing method, device and system of mass log information. A client end is used for filtering collected newly-increased log information, the transmission bandwidth occupied by invalid log information can be reduced when the log information is transmitted, the log information with high real-time performance is transmitted to a server in real time, the log information with low real-time performance is delayed to be transmitted to the server, and the collecting cycle of the log information can be effectively shortened. The logic server transmits warning log information to a warning processing device timely, the demand for timely outputting the warning information in the log information can be met, non-warning log information is stored to different storage positions, the types of the log information correspond to the operation types of operation to the log information, so that in the process that a log operation platform conducts operation on the log information, the storage positions of the log information can be judged according to the operation types, the processing time of log data operation can be quickly and effectively shortened, and the processing efficiency is improved.

A telescopic video coding method for optimized transmission of interested area

The invention provides a scalable video coding method where a region of interest has transmission priority. In the method, the region of interest is treated with default setting or optionally chosen by a user at a receiving terminal during coding. The bit stream of an enhancement layer is treated in different manners according to the fact that whether an instruction is received from the region of interest (ROI) when the instruction is sent. If the instruction from the ROI is not received, the encoded bit stream is packed according to a preset order and an obtained channel bandwidth; if the instruction from the ROI is received, a coding and recoding module recodes after coding according to the position and the size of the region of interest and has the transmission priority so as to ensure that the region of interest of the user at the receiving terminal is more clear to improve the subjective quality of the video. When an encoded video streaming media is transmitted or a quasi-real-time video is transmitted by the scalable video coding method of the invention, the user at the receiving terminal can optionally choose the region of interest and the video effect of the region of interest can be greatly improved, therefore, not only precious transmission bandwidth resources is saved, but also the subjective quality of the video is improved.

Technique for providing program guide data through a communications network delivering programming content

In order to efficiently utilize the limited transmission bandwidth of a communications network, e.g., a cable network, guide data for constructing an interactive program guide (IPG) is delivered to a set-top terminal using different methodologies. For example, the guide data associated with those programs which are likely of interest to a user is automatically provided piecemeal in a broadcast stream. The set-top terminal, along with other terminals, may retrieve from such a broadcast stream some or all of the guide data therein over time, which is cached in the terminal in anticipation of a user's invocation of an IPG. On the other hand, the guide data associated with those programs which are less likely of interest to a user is furnished upon request by the set-top terminal needing such guide data to realize an IPG desired by the user. In addition, guide data for each program may be divided into detail guide data providing details of the program (e.g., a synopsis of the program content), and grid guide data providing basic information about the program (e.g., title, channel and broadcast time). A first time window and a second time window may be defined such that the grid guide data associated with those programs broadcast within the first time window and the detail guide data associated with those programs broadcast within the second time window are automatically provided in the broadcast stream. The rest of the detail and grid guide data may be furnished upon request when needed.

Multilink self-adaptation data transmission method and system

The invention belongs to the technical field of network transmission and particularly relates to a multilink self-adaptation data transmission method and system. The method comprises the steps of: initially detecting the bandwidth value of each link, and dynamically detecting and regulating the bandwidth of each link by using 90% of a theoretical bandwidth value as the actual data transmission rate of each link. The system comprises a network transmission quality detecting module, a link transmission bandwidth regulating module and a data shunting module, wherein the network transmission quality detecting module is used for dynamically detecting the states of a network; the link transmission bandwidth regulating module is used for regulating the real-time transmission bandwidth value of each link according to positive correlation and network transmission quality; and the data shunting module is used for determining packet transmission links to a client side according to information in different packets. By means of the method and the system provided by the invention, the link resources of a user can be sufficiently utilized to provide higher bandwidth for the user, meanwhile, the detection and the regulation of the bandwidth of each link ensure that higher bandwidth utilization rate can be achieved. The invention truly realizes multilink bandwidth fusion.
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products