公开(公告)号：US20060183890A1

公开(公告)日：2006-08-17

申请号：US10550104

申请日：2004-03-19

申请人： Tim Tam ,  Khashayar Karimian ,  Shui Hu ,  Anna Chow ,  Richard Storey

发明人： Tim Tam ,  Khashayar Karimian ,  Shui Hu ,  Anna Chow ,  Richard Storey

IPC分类号： A61K31/7052 ,  C07H17/08

CPC分类号： C07H17/08 ,  C07H17/00

摘要： Azithromycin isopropanolate of the empirical formula azithromycin:[H20]x:[isopropanol]y is obtained from the crystallization of azithromycin in isopropanol and water. The x and y values is confirmed by single X-ray diffraction determination. In one embodiment x=1.5 and y=0.25. In another embodiment x=0.75 and y=0.5.

摘要翻译： 经验式阿奇霉素的阿奇霉素异丙醇化物：阿奇霉素在异丙醇中的结晶和异丙醇中的结晶得到：[异丙基] 水。 通过单次X射线衍射测定确认x和y值。 在一个实施方案中，x = 1.5和y = 0.25。 在另一个实施方案中，x = 0.75和y = 0.5。

公开(公告)号：US5053857A

公开(公告)日：1991-10-01

申请号：US387022

申请日：1989-07-28

申请人： Charles P. Sandbank ,  Richard Storey ,  Martin Weston

发明人： Charles P. Sandbank ,  Richard Storey ,  Martin Weston

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/16 ,  H04N11/20 ,  H04N11/24

CPC分类号： H04N11/20 ,  H04N11/006 ,  H04N11/02 ,  H04N7/125 ,  H04N11/167

摘要： In order to achieve increased resolution and to minimise cross-colour and cross-luminance effects in a PAL, NTSC or SECAM encoded signal, a high definition source (20) is pre-filtered at a higher line rate according to one of at least two methods (22, 24, 26). The filtered signal is sub-sampled (at 30, 32) at the source line standard where necessary, depending upon the degree of bandwidth reduction employed and one of the methods of pre-filtering and sub-sampling selected according (at 34) to a control signal (36) dependent on picture content. The luminance and chrominance components of the selected encoded signal are band pass filtered (46, 50, 52) and the chrominance signal modulated onto a sub-carrier (54) such that the frequency spectrum of the luminance and chrominance signals do not overlap.

公开(公告)号：US4249209A

公开(公告)日：1981-02-03

申请号：US023592

申请日：1979-03-26

申请人： Richard Storey

发明人： Richard Storey

IPC分类号： H04N5/21

CPC分类号： H04N5/21

摘要： Reduction of noise in a television signal is achieved by comparing signals from successive scans to produce a difference signal. Low amplitude differences are assumed to represent noise and are attenuated. Differences above a predetermined level are assumed to represent movement and are not so attenuated. The attenuation is achieved by a multiplier which receives as multiplier the output of a non-linear transfer characteristic element. The non-linear element receives the differences after rectification and after passing through a variable-gain element. The non-linear element is such that above a predetermined value a constant predetermined minimum attenuation factor applies. A noise measurement circuit measures the noise present in the difference signal and controls the gain of the variable-gain element accordingly. Several noise-measurement circuits may be provided, a selected one of which is used in dependence upon the magnitude of the input signal to the apparatus.

摘要翻译： 通过比较来自连续扫描的信号来产生差分信号来实现电视信号中的噪声的降低。 假设低幅度差异表示噪声并被衰减。 假设高于预定水平的差异表示运动并且不是如此衰减。 通过乘法器实现衰减，该乘法器作为乘法器接收非线性传递特征元素的输出。 非线性元件在整流后通过可变增益元件后接收差分。 非线性元件使得高于预定值时，应用恒定的预定最小衰减系数。 噪声测量电路测量差分信号中存在的噪声并相应地控制可变增益元件的增益。 可以提供若干噪声测量电路，其中选择的一个噪声测量电路根据输入到设备的信号的大小来使用。

公开(公告)号：US4296434A

公开(公告)日：1981-10-20

申请号：US43608

申请日：1979-05-29

申请人： John O. Drewery ,  Richard Storey

发明人： John O. Drewery ,  Richard Storey

IPC分类号： H04N9/00 ,  G06T7/20 ,  H04N5/14 ,  H04N5/262 ,  H04N9/64 ,  H04N9/877

CPC分类号： H04N5/2625 ,  G06T7/2053 ,  H04N5/144 ,  H04N9/64 ,  H04N9/877

摘要： To portray movement in a television display, a field of the signal is stored in an image store (110), and subsequent input fields are compared in a motion detector (104) with the stored field to detect differences between them due to movement. A flag is retained in an auxiliary store (114) to indicate the positions in the field of the detected differences. For those positions for which a new difference is detected, i.e. for which no difference has been detected previously, the corresponding portions of the then current input scan are stored in the image store (110), by a switch (106) being connected to the input (102). For portions which are flagged, the output of the auxiliary store (114) causes the switch (106) to take the output of the image store (110), thus insetting past positions of movement into the current field. The background of the field in the image store is nevertheless updated by the background of the input field. To allow for the 4-field NTSC or 8-field PAL cycle, transducers, or predictors, (170,160) are placed at the input and output of the image store (110) such that the image store retains information in one state only of the cycle. The motion detector (104) comprises a subtractor, a rectifier and a low-pass filter.

摘要翻译： 为了在电视显示器中描绘移动，信号的场被存储在图像存储器（110）中，并且在运动检测器（104）中将后续的输入场与存储的场进行比较，以检测它们之间由于移动而产生的差异。 标志被保留在辅助存储器（114）中以指示检测到的差异的字段中的位置。 对于检测到新的差异的那些位置，即，先前没有检测到差异的位置，当前输入扫描的相应部分被存储在图像存储器（110）中，由开关（106）连接到 输入（102）。 对于被标记的部分，辅助存储器（114）的输出使得开关（106）采取图像存储器（110）的输出，从而将过去的移动位置插入到当前场中。 图像存储中的字段的背景仍然被输入字段的背景更新。 为了允许4场NTSC或8场PAL循环，换能器或预测器（170,160）被放置在图像存储器（110）的输入和输出处，使得图像存储器仅将信息保存在一个状态中 周期。 运动检测器（104）包括减法器，整流器和低通滤波器。

公开(公告)号：US4249210A

公开(公告)日：1981-02-03

申请号：US23593

申请日：1979-03-26

申请人： Richard Storey ,  John O. Drewery

发明人： Richard Storey ,  John O. Drewery

IPC分类号： H04N5/21

CPC分类号： H04N5/21

摘要： Reduction of noise in a television signal is achieved by comparing signals from successive scans to produce a difference signal. Low amplitude differences are assumed to represent noise and are attenuated. Differences above a predetermined level are assumed to represent movement and are not so attenuated. The attenuation is achieved by a multiplier which receives as multiplier the output of a non-linear transfer characteristic element. The non-linear element receives the differences after rectification and after passing through a variable-gain element. The non-linear element is such that above a predetermined value a constant predetermined minimum attenuation factor applies. A noise measurement circuit measures the noise present in the difference signal and controls the gain of the variable-gain element accordingly. Several noise-measurement circuits may be provided, a selected one of which is used in dependence upon the magnitude of the input signal to the apparatus.