公开(公告)号：WO02073581A3

公开(公告)日：2003-02-20

申请号：PCT/EP0202019

申请日：2002-02-26

Applicant: GRUNDIG AG ,  FISCHBECK UDO

Inventor： FISCHBECK UDO

IPC: G09G3/36 ,  G09G3/20 ,  G09G3/28 ,  H04N5/66

CPC classification number: G09G3/2029 ,  G09G3/28 ,  G09G2360/16

Abstract: The invention relates to a method and a device for improving the grey scale resolution of a pulse width modulated image display device. The time interval available for representing an image is divided into successive weighted partial time intervals comprising partial time intervals having low weighting and partial time intervals having high weighting. If the evaluation of the luminosity of the image to be represented causes a dark image to be detected, partial time intervals having high weighting are not required and the number of partial time intervals having low weightings is increased by using additional partial time intervals having low weightings. The weightings of the additional partial time intervals are different to the weightings of the first partial time intervals having low weightings. The grey scale resolution is thereby improved for dark images.

Abstract translation: 本发明涉及一种用于改进在脉冲宽度控制的图像显示装置中的灰度值的分辨率的方法和装置。 在此，图像表示可用时间间隔的性质被眼睛被分成连续的加权后的部分的时间间隔，其中，与低加权和局部的时间间隔的部分时间间隔设置有更高的权重。 通过图像的亮度的评价检测要被显示，这是本INE暗图像，则省去了使用部分的时间间隔具有较高的权重，而是部分的时间间隔的数量与niedrigne权重增加，其中，所述第一权重的附加部分的时间间隔的加权 不同的部分的时间间隔具有低权重。 灰度分辨率的改善是在暗图像的情况下实现的。

公开(公告)号：DE10161718A1

公开(公告)日：2003-06-18

申请号：DE10161718

申请日：2001-12-15

Applicant: GRUNDIG AG

Inventor： FISCHBECK UDO ,  MERHOF GERHARD ,  STRACKE JUERGEN ,  VALEK TOMAS

IPC: G09G3/20 ,  G09G3/28 ,  H04N5/202 ,  H04N5/70 ,  H04N5/44 ,  H04N9/30

Abstract: Targeted insertion of noise signals create additional brightness intermediate stages in dark areas, using noise generator before gamma corrector or using dither circuit between gamma corrector and display. Video signals from color decoder (1) fed to overlay circuit (5) have noise signal of amplitude probability distribution same as video signal, overlaid on them. Output signal (k1) is gamma corrected by 8-bit quantizer (2) thus providing dithered signal (k2) to display (3). Video signals from color decoder (1) are fed to overlay circuit (5), and noise signal of amplitude probability distribution same as video signal, is overlaid on video signal. Output signal (k1) is gamma corrected by conventional 8-bit quantizer (2) thus providing signal dithered by noise. Output (k2) is fed to display (3). Alternatively video signals from color decoder are gamma corrected (2), made non-linear and then fed to dither circuit and to display. Independent claim for device to improve image quality of dark areas of digital image display.

公开(公告)号：DE19950432A1

公开(公告)日：2001-07-12

申请号：DE19950432

申请日：1999-10-19

Applicant: GRUNDIG AG

Inventor： FISCHBECK UDO

IPC: G09G3/294 ,  G09G3/28

公开(公告)号：DE19859678C1

公开(公告)日：2000-03-16

申请号：DE19859678

申请日：1998-12-23

Applicant: GRUNDIG AG

Inventor： FISCHBECK UDO ,  STRACKE JUERGEN ,  VALEK TOMAS

IPC: G09G3/20 ,  G09G5/00 ,  H04N5/04 ,  H04N5/46 ,  H04N5/66 ,  H04N5/70 ,  H04N5/06

Abstract: A first time difference ( DELTA t1) between a first impulse (I1) supplied by a circuit and a subsequent second impulse (I2) is tested for an appropriate value set in one of several preset time difference rate ranges (B1-Bn). A second time difference ( DELTA t2), falling in one of these time ranges excluding a range with the shortest time difference, falls in a range with the longest time differences as does a fourth time difference ( DELTA t4).

公开(公告)号：DE19733016A1

公开(公告)日：1999-02-04

申请号：DE19733016

申请日：1997-07-31

Applicant: GRUNDIG AG

Inventor： FISCHBECK UDO

IPC: H04N5/44 ,  H04N5/445 ,  H04N5/50 ,  H04N7/025

公开(公告)号：DE59810790D1

公开(公告)日：2004-03-25

申请号：DE59810790

申请日：1998-12-05

Applicant: GRUNDIG AG I INS

Inventor： FISCHBECK UDO

IPC: H04N5/66 ,  H04N5/74 ,  H05K7/20

公开(公告)号：DE10225029A1

公开(公告)日：2003-12-18

申请号：DE10225029

申请日：2002-06-06

Applicant: GRUNDIG AG I INS

Inventor： FISCHBECK UDO

IPC: F16M13/02 ,  G06F1/16 ,  H05K5/02

Abstract: The monitoring system (1) has two loudspeakers (24,25), one on either side of a monitor circuit (30). A baseplate (10) has two holes (19) to accommodate screws or hooks fastening the plate to the wall of the room. The central portion of the plate is rectangular and has two pairs of hooks (11,12) engaging the rear of the monitor unit. The hooks are connected to terminals (20-23) for the loudspeakers situated on extensions on the ends of the baseplate.

公开(公告)号：DE10127132A1

公开(公告)日：2003-01-09

申请号：DE10127132

申请日：2001-06-05

Applicant: GRUNDIG AG

Inventor： FISCHBECK UDO ,  FRANZEN ORTWIN

IPC: G09G3/20 ,  G09G3/28 ,  H04N9/30

Abstract: A television receiver has signal processor (1) and an image processor (2) that provides an output to a plasma display screen (14). The image processor is based around a pulse width modulator (10) that operates with a time interval controller (13) so as to provide a binary weighting of the time intervals to improve resolution.

公开(公告)号：DE10112472A1

公开(公告)日：2002-09-19

申请号：DE10112472

申请日：2001-03-15

Applicant: GRUNDIG AG

Inventor： FISCHBECK UDO

IPC: G09G3/20 ,  G09G3/28 ,  G09G3/288 ,  G09G3/299 ,  H04N5/44 ,  H04N5/21 ,  H04N9/30

公开(公告)号：DE10138353A1

公开(公告)日：2002-02-28

申请号：DE10138353

申请日：2001-08-04

Applicant: GRUNDIG AG

Inventor： FISCHBECK UDO ,  SPINDLER JOHANNES

IPC: G09G3/20 ,  G09G3/28 ,  H04N5/21 ,  H04N3/12 ,  H04N5/57

Abstract: Input video signal (E) is divided along three signal paths. Upper path test unit (1) detects if brightness of at least three consecutive pixels is smaller than threshold value. If not smaller, test unit control signal puts switch (4) to upper setting. If smaller, test unit sets switch to lower setting. Output of delay branch (2) is fed to upper input of switch. In lower signal path input signal is fed to filter (3) for linear or weighted signal averaging and filter output to lower input of switch. Independent claim for device to reduce noise in pulse width controlled display.