公开(公告)号：EP1155572A1

公开(公告)日：2001-11-21

申请号：EP00976008.3

申请日：2000-11-06

申请人： Koninklijke Philips Electronics N.V.

发明人： DENTENEER, Theodorus, J., J. ,  DIJKHOF, Antonie

IPC分类号： H04N7/24

CPC分类号： H04N21/8547 ,  H04N21/23608 ,  H04N21/4344

摘要： A method and device are disclosed for calculating estimated time stamps ìt in video distribution apparatus, MPEG-2 program encoders, multiplexers, splicers. True times Yt of a data packet number t having the linear form: Yt = Yt-1 + Jt, Jt = Jt-1 + tt, with tt being a small perturbation relative to the linear relation between time and packet number. The true times of data packet number t are observed as: ot = Yt + ht, where ht is an observational error. The estimated time stamps are produced according to: ìt = ìt-1 + βt and such that the value of βt is made dependent on the exceeding by #ot - ìt-1 - βt-1 # of max[ht]. The results are accurate and smooth estimated time stamps.

公开(公告)号：EP1499950A2

公开(公告)日：2005-01-26

申请号：EP03708438.1

申请日：2003-04-01

申请人： Koninklijke Philips Electronics N.V.

发明人： DIJKHOF, Antonie ,  GHIJSEN, Maarten, A. ,  DEKKER, Simon, T.

IPC分类号： G06F5/06

CPC分类号： G06F5/06

摘要： This invention relates to a method and system for changing an output rate of information for a buffer (3) with a constant first output rate (R1) which receives output data from a data source (2a), where the method step comprises; halting the reception of output data from the data source (2a); outputting (4) the stored output data of the buffer (3) at the first output rate (R1) until said buffer is empty, and resuming receiving and storing of output data in the buffer (3); setting a second constant output rate (R2) as the output rate of the buffer; and commencing/starting output of the content of the buffer at the second output rate (R2) when the amount of buffereddata is equal to the second constant output rate (R2) times a requested buffer-time (TB2).

公开(公告)号：EP1497726A2

公开(公告)日：2005-01-19

申请号：EP02790617.1

申请日：2002-12-19

申请人： Koninklijke Philips Electronics N.V.

发明人： DIJKSTRA, Hendrik ,  DIJKHOF, Antonie ,  DEKKER, Simon, T.

IPC分类号： G06F9/46

CPC分类号： G06F9/4881 ,  G06F9/52

摘要： This invention relates to a method and a system for executing processes with different priorities in a multiprocessing environment comprising execution of a low priority process and a high priority process where the high priority process and the low priority process (T1) share a given resource, the method comprising the step of: raising the effective priority of the low priority process when the low priority process is going to use the shared resource, where the effective priority is raised to above other processes in the multiprocessing environment. This allows for as short delay, by other processes, of the high priority process as possible.