公开(公告)号：ITMI20011309A1

公开(公告)日：2002-12-23

申请号：ITMI20011309

申请日：2001-06-21

Applicant: ST MICROELECTRONICS SRL

Inventor： BETTI GIORGIO ,  PAU DANILO ,  DATI ANGELO ,  D ALTO VIVIANA ,  SANTINELLO FILIPPO

IPC: H04N7/26 ,  H04N7/50 ,  H04N7/66

Abstract: A method of storing a data file, particularly in the MPEG format and including a flow of different frames, comprises a protection system for the data file based on a parameter stored in the data file. Advantageously, the storage method comprises selectively protecting the frames by storing parameters that are associated with corresponding different frames whose values are selected to provide a playing quality level requested by an end user. Also, a method is provided for decoding a data file, particularly of the MPEG type and including a flow of different frames, wherein the data file is stored per above.

公开(公告)号：DE69426820D1

公开(公告)日：2001-04-12

申请号：DE69426820

申请日：1994-09-30

Applicant: ST MICROELECTRONICS SRL

Inventor： D ALTO VIVIANA ,  MANCUSO MASSIMO ,  POLUZZI RINALDO ,  RIZZOTTO GIANGUIDO

IPC: H03H17/00 ,  H04N5/21 ,  H04N9/64

公开(公告)号：DE69327900D1

公开(公告)日：2000-03-30

申请号：DE69327900

申请日：1993-06-09

Applicant: ST MICROELECTRONICS SRL

Inventor： D ALTO VIVIANA ,  AIROLDI FABRIZIO ,  SCALISE FABIO ,  PODESTA MARIA GRAZIA

IPC: H04B7/015 ,  H04N5/21

Abstract: An adaptive method for suppressing video signal x(k) echoes in equalizers of TV sets including digital filters whose coefficients are updated in an adaptive and iterative manner using an LMS (Least Mean Square) algorithm until the difference, or output error, between a target output signal d(k), called the reference signal, and an outgoing signal y(k) from the equalizer is gradually reduced, comprises the steps of: applying a "combing" technique to an original filter having K*N coefficients in order to select K comb filters having N coefficients each; applying said LMS algorithm, with a variable convergence factor ( mu ) to each individual comb filter for a predetermined number of iterations; gathering the resultant configurations of the comb filter coefficients and selecting a subfilter with N largest modulo coefficients therefrom; updating the values of said N coefficients again by reiterating the LMS algorithm to said subfilter for a limited number of iterations; zeroing all the coefficients with a lower modulo than a predetermined threshold; selecting a group of F coefficients by a slotting operation across those of said coefficients which have a cluster value: and updating the value of said group of F coefficients, by reiterating the LMS algorithm, until the output error e(k) becomes smaller than a predetermined value.

公开(公告)号：DE69736347T2

公开(公告)日：2007-07-12

申请号：DE69736347

申请日：1997-05-09

Applicant: ST MICROELECTRONICS SRL

Inventor： MANCUSO MASSIMO ,  D ALTO VIVIANA ,  POLUZZI RINALDO ,  AIROLDI FABRIZIO

IPC: H04N1/40 ,  H04N5/225 ,  H04N5/91 ,  H04N5/92

Abstract: Digital photography apparatus (100), particularly a digital still camera, comprising means (110-125) for acquiring a digital image, compression means (130) for obtaining a compressed image, and a memory (135) for storing the compressed image, the apparatus also including processing means (140) for obtaining a processed image and corresponding processing parameters from the image acquired, the processing means (140) supplying as an output, in a first operative condition, the processed image to be compressed by the compression means (130) and, in a second operative condition, the image acquired to be compressed by the compression means (130) and the processing parameters to be stored in the memory (135).

公开(公告)号：ITMI20011309D0

公开(公告)日：2001-06-21

申请号：ITMI20011309

申请日：2001-06-21

Applicant: ST MICROELECTRONICS SRL

Inventor： BETTI GIORGIO ,  PAU DANILO ,  DATI ANGELO ,  D ALTO VIVIANA ,  SANTINELLO FILIPPO

IPC: H04N7/26 ,  H04N7/50 ,  H04N7/66

Abstract: A method of storing a data file, particularly in the MPEG format and including a flow of different frames, comprises a protection system for the data file based on a parameter stored in the data file. Advantageously, the storage method comprises selectively protecting the frames by storing parameters that are associated with corresponding different frames whose values are selected to provide a playing quality level requested by an end user. Also, a method is provided for decoding a data file, particularly of the MPEG type and including a flow of different frames, wherein the data file is stored per above.