公开(公告)号：US4882585A

公开(公告)日：1989-11-21

申请号：US169865

申请日：1988-03-17

Applicant: Terry D. Beard

Inventor： Terry D. Beard

IPC: H03M3/00 ,  H03M1/00

CPC classification number: H03M1/208 ,  H03M1/661

Abstract: A method and system for encoding a series of input digital signals in a higher order digital format, such as 16 bit, to a series of lower order digital signals such as 8 bit, and then recovering the original input signals with a greater accuracy than previously attainable is described. A distinct reduction in quantization noise is produced, making the system compatible with very high resolution audio equipment such as compact disks. For each input signal, a particular pair of complementary encoding and decoding transformations are selected from a set of numerous possible transformations. The transformations are nonlinear, with high resolutions near the origin and much lower resolutions further away. The high resolution range increases from table to table, while the absolute resolution within said ranges decreases. The value of each input signal is predicted from previous signals, and a differential quantity representing the prediction error is used in selecting the table for each signal. Overall quantization noise is significantly reduced by updating the table selections so that the differential quantity remains within the high resolution range. Identical decoding circuitry is provided in both the encoder and decoder to assure tracking between the two. An analog-to-digital conversion is provided at the input, with a reverse conversion at the output.

Abstract translation: 一种用于将诸如16位的高阶数字格式的一系列输入数字信号编码为诸如8位的一系列低阶数字信号的方法和系统，然后以比以前更高的精度恢复原始输入信号 描述可达到的。 产生了量化噪声的显着降低，使系统与非常高分辨率的音频设备（如光盘）兼容。 对于每个输入信号，从一组许多可能的变换中选择一对特定的互补编码和解码变换。 这些变换是非线性的，在原点附近具有高分辨率，远离更低的分辨率。 高分辨率范围从表到表增加，而所述范围内的绝对分辨率降低。 从先前的信号预测每个输入信号的值，并且在为每个信号选择表时使用表示预测误差的差分量。 通过更新表选择使得差分量保持在高分辨率范围内，总体量化噪声显着降低。 在编码器和解码器中均提供相同的解码电路，以确保两者之间的跟踪。 在输入端提供模数转换，在输出端进行反向转换。

公开(公告)号：US4836647A

公开(公告)日：1989-06-06

申请号：US154068

申请日：1988-02-09

Applicant: Terry D. Beard

Inventor： Terry D. Beard

IPC: G02B27/28 ,  G02B27/22 ,  H04N13/00

CPC classification number: H04N13/0431 ,  H04N13/0221 ,  H04N13/0239 ,  H04N13/0257 ,  H04N13/0434 ,  H04N13/0438

Abstract: A method for creating a 3-D television effect is disclosed in which a scene is recorded with a relative lateral movement between the scene and the recording mechanism. The recording is played back and viewed through a pair of viewer glasses in which one of the lenses is darker and has a spectral transmission characterized by a reduced transmissivity at at least one, and preferably all three, of the television's peak radiant energy wavebands. The lighter lens, on the other hand, has a spectral transmission characterized by a reduced transmissivity at wavelengths removed from the television energy peaks. The result is a substantially greater effective optical density differential between the two lenses when viewing television than in normal ambient light. This produces a very noticeable 3-D effect for television scenes with the proper movement, while avoiding the prior "dead eye" effect associated with too great a density differential in ordinary light. Further enhancement is achieved by providing the darker lens with a higher transmissivity in the blue and red regions than in the yellow or green regions.

公开(公告)号：US4705371A

公开(公告)日：1987-11-10

申请号：US916136

申请日：1986-10-10

Applicant: Terry D. Beard

Inventor： Terry D. Beard

IPC: G03B35/18 ,  H04N13/00 ,  G03B21/32

CPC classification number: H04N13/0431 ,  G03B35/18

Abstract: A method for creating a 3-D effect is disclosed in which a scene is recorded with a relative lateral movemnet between the scene and the recording mechanism. The recording is played back and viewed through a light filter which has a greater optical density for one eye than for the other eye, thereby causing one eye to perceive a darker image which appears to lag in time behind the image perceived by the other eye. The result is a three-dimensional effect which can be controlled by controlling the direction and speed of relative movement, the relative optical densities of the filter used for each eye, and the size of the distance from the viewing screen. The invention also includes viewer glasses with a spectral density gradient in which the optical density of one lens is at least 0.3 optical density darker than the optical density of the other lens, and the differene in optical densities between the two lenses is preferably within the range of approximately 0.8 to approximately 2.0.

Abstract translation: 公开了一种用于创建3-D效果的方法，其中以场景和记录机构之间的相对横向移动记录场景。 记录通过一个具有比一只眼睛更大的光密度的光过滤器进行回放和观看，从而使一只眼睛感觉到在另一只眼睛感知到的图像后面看起来滞后的较暗图像。 结果是可以通过控制相对运动的方向和速度，用于每只眼睛的滤镜的相对光密度以及与观察屏幕的距离的大小来控制三维效果。 本发明还包括具有频谱密度梯度的观看者眼镜，其中一个透镜的光密度比另一透镜的光密度更暗的至少0.3光密度，并且两个透镜之间的光密度差异优选在该范围内 约0.8至约2.0。

公开(公告)号：US4596008A

公开(公告)日：1986-06-17

申请号：US526433

申请日：1983-08-25

Applicant: Terry D. Beard

Inventor： Terry D. Beard

IPC: G11B7/00 ,  G11B7/003 ,  G11B7/135 ,  G11B7/125

CPC classification number: G11B7/0032 ,  G11B7/1381

Abstract: The locally averaged or approximate D.C. value of a variable area optical sound track on a film is first determined, and this information is then used to control the width of a scanning slit at a playback station. The scanning slit width is reduced for small signals and increased for large signals, thereby reducing the amount of non-information bearing area on the film which is included in the scanned area. This in turn reduces the amount of noise from dirt and debris in the non-information bearing area, and by reducing the total amount of light transmitted through the film also lowers the level of quantum noise from the photodetector employed at the playback station.

Abstract translation: 首先确定胶片上的可变面积光学声轨的局部平均或近似值D.C.值，然后使用该信息来控制重放站的扫描狭缝的宽度。 对于小信号，扫描狭缝宽度减小并且对于大信号而增加，从而减少了包括在扫描区域中的胶片上的非信息承载区域的数量。 这反过来又减少了非信息承载区域中污垢和碎屑的噪音量，并且通过减少透过膜的光的总量也降低了来自重放站所使用的光检测器的量子噪声的水平。