39 results about "Skip mode" patented technology

The invention discloses a method and apparatus for determining inter-frame coding modes, which compares the rate-distortion function cost of the skip mode with the presupposition current value of the first threshold. If the rate-distortion function cost of the skip mode is smaller than the current first threshold, then the skip mode is determined to be the optimal mode under the inter-frame prediction mode; otherwise, the optimal mode under the inter-frame prediction mode is determined from the other modes under the inter-frame prediction mode, the rate-distortion function cost of which is subsequently compared with the presupposition current value of the second threshold. If the rate-distortion function cost of the optimal mode under the inter prediction mode is smaller than the current second threshold, then the optimal mode is determined to be the inter-frame coding mode; otherwise, the smallest one among the optimal modes under the intra prediction mode and the optimal modes under the intra prediction mode is determined to be the inter-frame coding mode. The invention has no need of calculating the rate-distortion function cost of all the modes, thus reducing the calculation work and enhancing the coding speed.

The invention primarily utilizes the average value of the rate-distortion cost of various coded macroblocks to forecast whether the current macroblock is coded into a skip macroblock by comparing the relation between the rate distortion cost of the skip mode of a macroblock to be coded and the average value; and then the possible interframe coding mode assemble of the current macroblock to be coded is forecasted through checking the mode assemble of the adjacent macroblocks coded on time and space; the forecast begins form the most possible coding mode by using occurrence frequency of various coded macroblocks interframe coding modes; and in the forecasting process, whether to stop the forecasting process of the interframe coding mode ahead of time is decided by comparing the relation between the rate distortion cost value and the average rate distortion cost value of the mode. Under the condition that mode ergodicity is not performed, the invention directly forecasts and obtains the possible interframe coding mode assemble of the current coding block by utilizing the statistic information of the macroblock coding mode and the correlation of the coding mode among macroblocks.

This invention provides a method to speed up mode decision in video coding standards. It is based on the characteristics of mode distribution and the relationship among the modes of neighboring blocks. It compares the main steps of checking SKIP mode, checking if neighboring blocks have a same mode, checking the best mode, and checking each mode in all inter modes then selecting the best one of these modes. Compared to the H.264 reference software full search method, the simulation result shows that this method can save up to 66.81% of the total encoding time with a slight increase in bit rate and a negligible PSNR drop.

A method and apparatus for video coding including an Intra transform Skip mode is disclosed. When the transform Skip mode is ON for a transform unit, embodiments according to the present invention apply different coding processes to the transform unit. The coding process with the transform Skip mode ON uses a different scan pattern from the coding process with the transform Skip mode OFF. According to various embodiments, the transform Skip mode is enabled when the transform unit size is 4×4, the prediction unit and the transform unit having the same size, or the prediction unit uses an INTRA_N×N mode. When the transform Skip mode is enabled, a flag can be signaled in the bitstream to indicate the transform Skip mode selection. Furthermore, the flag can be incorporated in a picture level, a slice level or a sequence level of the video bitstream.

A method for quickly selecting mode of interframe prediction code includes calculating price function under skip mode, calculating price function of macroblock, calculating SAD value of four 8x8 sub-macroblock on said macroblock by applying full-sampling mode, obtaining relevant price function of said macroblock by carrying out 16x8 and 8x8 block motion search on said macroblock and selecting interframe prediction code mode with minimum price function to carry out motion compensation of next stage.

A method and an apparatus for video coding including an Intra transform Skip mode are disclosed. When the transform Skip mode is ON for a transform unit, embodiments according to the present invention apply different coding processes to the transform unit. The coding process with the transform Skip mode ON uses a different scan pattern from the coding process with the transform Skip mode OFF. According to various embodiments, the transform Skip mode is enabled when the transform unit size is 4x4, the prediction unit and the transform unit having the same size, or the prediction unit uses an intra 4x4 mode. When the transform Skip mode is enabled, a flag can be signaled in the bitstream to indicate the transform Skip mode selection. Furthermore, the flag can be incorporated in a picture level, a slice level or a sequence level of the video bitstream.

The invention discloses a mode decision based adaptive GOP (group of pictures) coding and decoding method which can improve rate distortion performance. Frames of the GOP which are to be coded are classified into key frame, secondary key frame and WZ frame, wherein the secondary key frame block is coded in an inter-frame mode, intra-frame mode or Skip mode; and the WZ frame block is coded in a WZmode, the intra-frame/WZ mode or Skip/WZ mode. The GOP decoding is classified into key frame decoding, secondary key frame decoding and WZ frame decoding, wherein, the key frame is decoded in the conventional intra-frame mode; the secondary key frame is decoded in the inter-frame mode, intra-frame mode or Skip mode; and the WZ frame is decoded in a WZ block mode, rough intra-frame block mode or Skip block mode. The decoded key frames and secondary key frames of the GOP are stored in a memory. By adopting the invention, both coding efficiency and final decoding quality can be improved for the whole system so that the rate distortion performance is improved greatly under the condition that the calculated amount is slightly improved.

The a method and system of making a coding mode decision for a given macroblock of a current frame is disclosed. A codec for making the coding mode decision is provided. The codec disclosed herein performs prediction of the motion vectors in inter-frames. The macroblock may be coded in one of six inter modes, such as skip mode, P16×16 mode, P16×8 mode, P8×16 mode, and P8×8 mode or in intra modes such as intra 4×4 mode and intra 16×16 mode. Each block in the inter-frame is predicted from a block of equal size in the reference frame. In each mode, the codec finds a best match, that is, a motion vector for each block size in the reference frame and calculates a corresponding cost. The codec evaluates each mode based on cost and the mode with the least cost is selected as best mode for coding the given macroblock.

The application provides the embodiment of a method for interface interaction. The method of the embodiment can respond to a skip operation triggered by a user on a current subpage of a browser; an opened web page corresponding to the skip operation is searched among multiple stored opened web pages which are once opened by the user; a corresponding web page index is generated for the found opened web page; and the web page index can then be displayed on the current subpage in the form of a skip list, so that the user can select a certain web page index in the skip list so as to response to the user's selection of the web page index. According to the embodiment, the browser is triggered to skip to a target web page denoted by the target web page index from the current subpage. Obviously, the method provided by the embodiment has the advantages that the user who browses the web page in the form of the subpage can very easily skip the current subpage to the web page which is once browsed according to browsing history; the skip mode is simple and convenient; and experience of the user is good. In addition, the application also provides the embodiment of a device for the interface interaction, wherein the device is used to ensure application and achievement of the method in practice.

The embodiment of the invention provides a table querying method and device and equipment. The method includes the steps of receiving a first querying request, wherein a skipping key value is comprised in the first querying request; carrying out querying in tables preconfigured with a skipping relationship according to the skipping key value, and obtaining at least one set of first data information associated with the skipping key value; displaying the at least one set of first data information. As table-linking skipping configuration is carried out between the introduced multiple tables, and a certain skipping key value is clicked in the querying result, the data information in the associated table can be directly displayed in a skipped mode, it is avoided that a tester learns the content of all the tables, the required data information can be easily and rapidly queried for testing, game testing efficiency can be effectively improved, and the testing cost can be reduced.

The invention discloses a method for rapidly dragging an application program to switch pages, wherein the method comprises the steps of 1, starting; 2, dragging an application program icon by the user; 3, judging whether the user drags in a pointed region of the page by the system, if so, executing the step 4, if not, turning to the step 2; 4, starting a rapid skip mode; 5, continuing to drag the application program icon; 6, judging whether the dragging is carried out in the pointed region of the page; if so, calculating the page which the application program icon rapidly slips to depending on the dragging position and locating to a corresponding page; if not, executing the step 7; 7, quitting out the rapid skip mode; 8, dragging the icon into a target page and precisely locating and placing; and 9, ending. According to the method, the icon is dragged to the pointed region of the page, and the rapid skip mode is combined with the operation of dragging the application icon so as to solve the problem of difficult control in the method adopting a timer as well as the problem of poor precision of the square method; and the application program icon is rapidly and accurately dragged into other any pages.

The invention discloses a multi-view video coding method, comprising the following steps of: firstly determining that whether a motion estimation mode or a parallax estimation mode is firstly carried out according to reference frame information of coded adjacent blocks, then traversing an intra-frame mode, a Skip mode and seven modes of motion estimation or parallax estimation to a current macro block, calculating RD expenditure of all the modes and determining the best temporary mode; carrying out different calculation of the parallax estimation mode or the motion estimation mode by the obtained best temporary mode and finally obtaining the best mode as a final coding mode; and ending the coding to the current macro block. The multi-view video coding method utilizes correlation between the motion estimation and parallax estimation mode, reduces calculation complexity of the multi-view video coding by ending unnecessary mode calculation in advance, and reduces the coding time by more than 50 percent under the premise that the image quality is almost not reduced, compared with all traversed coding modes.

The invention provides a quick interframe prediction mode selection algorithm for combining a time domain and texture, which comprises the following steps: judging whether the current macroblock belongs to a macroblock in a frame of image or not; if the current macroblock belongs to the macroblock in the image, selecting an intraframe mode as an optimal prediction mode directly; if the current macroblock does not belong to the macroblock in the image, calculating the rate distortion expense of the current macroblock in a skip mode; if the rate distortion expense is smaller than a minimum threshold value, selecting the skip mode as an optimal mode; if the rate distortion expense is greater than a maximum threshold value, selecting the infraframe mode as the optimal mode; and if the rate distortion expense is between the minimum threshold value and the maximum threshold value, carrying out diffused transformation according to the optimal mode of the corresponding macroblock of the previous frame, using the respective mode selection procedures, taking the rate distortion expense of the corresponding macroblock of the previous frame in the optimal mode as a reference quantity, searching the optimal prediction mode, and recording the corresponding optimal mode and the minimum rate distortion expense in the mode as a reference quantity of the corresponding macroblock of the next frame during mode prediction. The operation time of the invention is approximately saved by 20-30%.

The invention discloses a method and a device for on-board programming of an indirect addressing skip mode based on an SRAM (Static Random Access Memory). According to the programming method, a replaced module source address, a skip target address and a new code content have one-to-one corresponding relations, the corresponding replaced module source address is updated by the skip target address, and a skip is directly made to the new code content to execute the new code content according to the corresponding relation between the skip target address and the new code content in order to replace a replaced module, so that on-board programming modules do not need to be pre-established, and the number of the on-board programming modules is unlimited. Except for an interrupt service routine and an exception handler, all other modules can carry out on-board programming; all modules adopt a direct addressing skip way and do not need to reserve a space during original programming, and furthermore, the scale of an on-board programming region almost has no space limitation, and the constraint of the corresponding relation is just met.

The invention provides a page skip control method and device, and the method comprises the steps of obtaining a user page establishment request; providing a page skip mode setting interface for a userin response to the page establishment request; receiving the setting of a page skip mode by the user, the page skip mode comprising direct skip and indirect skip; and establishing a page according tothe page skipping mode set by the user. By means of the scheme, the problems that an existing page jumping mode is single, and many system resources are occupied are solved, and the technical effectsthat the page jumping mode is diversified, and the system resources are saved are achieved.

Techniques are described where if an inter-view predicted motion vector candidate (IPMVC) and an inter-view disparity motion vector candidate (IDMVC) are derived based on a shifted disparity vector, where the amount by which the disparity vector is shifted for the IPMVC and IDMVC is different. The techniques also prioritize the inclusion of the IPMVC over the IDMVC in a candidate list, and prune the IPMVC and the IDMVC if there is a duplicated IPMVC or IDMVC in the candidate list.

A system and methods provide handling of variable rate playback in a multimedia computer architecture. The systems and methods provide data structures and interfaces that enable a computer architecture and components therein with the ability to playback data at speeds faster and slower than real-time, to playback data in reverse, and to change the rate of playback at any point during playback. One embodiment is a method for providing low-latency, glitch-free changes in a multimedia architecture. Other embodiments are directed to defining multimedia component responsibilities for making rate changes, allowing rate changes to work with standard playback types, coder-decoders, and renderers. The methods include determining a minimum of the maximum reported playback rates and determining minimum and maximum playback rates in a set of modes including: reverse skip mode, reverse key frame mode, reverse full mode, forward full mode, forward key frame mode, and forward skip mode.

When a skip mode is initiated, a back end MCU employs a fast forward function to perform fast forward reproduction for a period of twenty-four seconds, for example, that is shorter than a skipping period of thirty seconds, for example, and thereafter, a time search function searches for a reproduced image at a location thirty seconds ahead. Thereafter, the skip mode is shifted to the normal reproduction mode.