公开(公告)号：US5801664A

公开(公告)日：1998-09-01

申请号：US600410

申请日：1996-02-12

申请人： Robert B. Seidensticker ,  William E. Kim

发明人： Robert B. Seidensticker ,  William E. Kim

IPC分类号： G06F3/14 ,  G09G5/00

CPC分类号： G06F3/14

摘要： A data transmission system includes a programmable portable information device, a frame-scanning graphics display device (e.g., a CRT monitor), and a display device controller (e.g., a personal computer). The display device controller supplies pixel data to the frame-scanning graphics display device which causes the display device to depict a particular changing optical pattern. To display the particular pattern, the frame-scanning graphics display device inherently fluctuates in energy output as different pixel intensities require different degrees of power. As a result, the frame-scanning graphics display device effectively emits an RF carrier signal. The programmable portable information device is equipped with an RF receiver that can receive the RF signal from the display device when the programmable portable information device is within a transmission range. The RF carrier signal is modulated to carry programming data to the portable information device. The portable information device demodulates the RF signal to obtain the digital data stream.

摘要翻译： 数据传输系统包括可编程便携式信息设备，帧扫描图形显示设备（例如，CRT监视器）和显示设备控制器（例如，个人计算机）。 显示装置控制器将像素数据提供给帧扫描图形显示装置，其使显示装置描绘特定的改变光学图案。 为了显示特定图案，帧扫描图形显示装置在能量输出中固有地波动，因为不同的像素强度需要不同的功率。 结果，帧扫描图形显示装置有效地发射RF载波信号。 可编程便携式信息设备配备有当可编程便携式信息设备在传输范围内时可以从显示设备接收RF信号的RF接收机。 RF载波信号被调制以将编程数据传送到便携式信息设备。 便携式信息装置解调RF信号以获得数字数据流。

公开(公告)号：US5812430A

公开(公告)日：1998-09-22

申请号：US867086

申请日：1997-06-02

申请人： Steven J. Altschuler ,  William E. Kim ,  Lani F. Wu

发明人： Steven J. Altschuler ,  William E. Kim ,  Lani F. Wu

IPC分类号： G06F9/44 ,  G06F3/00 ,  G06F5/00

CPC分类号： G06F8/30

摘要： A method, system and computer product for allowing efficient user interaction with digital time-based signals. User control and filter information (symbolic, procedural or a combination of both) are optimized for greatly improving calculating efficiency. First, filters are symbolically optimized. Then, a single optimized procedure is generated and compiled into an optimized procedure code. The procedure code then processes the input signal according to control information.

摘要翻译： 一种方法，系统和计算机产品，用于允许与数字时基信号的高效用户交互。 用户控制和过滤器信息（符号，程序或两者的组合）进行了优化，大大提高了计算效率。 首先，过滤器被象征性地优化。 然后，生成一个单一的优化过程并将其编译成优化的过程代码。 然后，程序代码根据控制信息处理输入信号。

公开(公告)号：US5739866A

公开(公告)日：1998-04-14

申请号：US755970

申请日：1996-11-25

申请人： William E. Kim ,  Nathan P. Myhrvold ,  Gideon A. Yuval

发明人： William E. Kim ,  Nathan P. Myhrvold ,  Gideon A. Yuval

IPC分类号： H04N7/08 ,  H04N7/081

CPC分类号： H04N7/081 ,  H04N7/0803

摘要： A system and method for modulating a data signal uses a phase shifting transformer function to phase shift the lower and upper sidebands of the data signal so that the sidebands of the data signal have a 180.degree. phase shift with respect to each other (i.e., are complementary). The phase shifted sidebands are added to a standard video signal and then transmitted. A television or other video receiver demodulates the video signal with a simple demodulator circuit, which causes the upper and lower sidebands to be summed together. The data signal, with complementary sidebands, cancels out so that the data signal does not interfere with normal video operation. The upper and lower sidebands of the data signal are processed separately from the video processing circuitry of the television receiver. An inverse phase shifting circuit performs a second phase shift operation on the upper and lower sidebands of the data signal so that the data signal can be demodulated and the data signal recovered.

摘要翻译： 用于调制数据信号的系统和方法使用相移变换器功能来相移数据信号的下边带和上边带，使得数据信号的边带相对于彼此具有180°的相移（即， 补充）。 相移的边带被添加到标准视频信号中，然后发送。 电视机或其他视频接收机用简单的解调器电路对视频信号进行解调，这使得上边带和下边带相加在一起。 具有互补边带的数据信号被取消，使得数据信号不会干扰正常的视频操作。 数据信号的上边带和下边带与电视接收机的视频处理电路分开处理。 逆相移电路对数据信号的上边带和下边带执行第二相移操作，使得可以解调数据信号并恢复数据信号。

公开(公告)号：US5708476A

公开(公告)日：1998-01-13

申请号：US681083

申请日：1996-07-22

申请人： Nathan P. Myhrvold ,  Gideon A. Yuval ,  William E. Kim

发明人： Nathan P. Myhrvold ,  Gideon A. Yuval ,  William E. Kim

IPC分类号： H04N7/08 ,  H04N7/081

CPC分类号： H04N7/081

摘要： A system and method for inserting a data signal into a preexisting video signal in a transmitter so that the data signal is transmitted along with the video signal. The data signal is inserted into an unused portion of the video signal spectrum. The data signal is separated from the video signal in a receiver and may be used for any purpose, even purposes unrelated to the video signal. The data signal is filtered to create a filtered data signal having spectral characteristics that correspond to the unused portion of the video signal spectrum. The filtered signal modulates a carrier signal whose frequency is selected to permit direct insertion of the modulated filtered data signal into the video signal spectrum. In the receiver, the video signal is processed in a normal manner; and the data signal is undetected by normal television receivers. A signal separator separates the filtered data signal from the combined video signal, and an inverse filter recovers the original data signal. In one embodiment, a comb filter is used to generate the filtered data signal with 60 Hertz peaks. An inverse comb filter in the receiver recovers the original data signal. A recirculating buffer may also be used to generate the filtered data signal.

摘要翻译： 一种用于将数据信号插入到发射机中的先前存在的视频信号中的系统和方法，使得数据信号与视频信号一起发送。 数据信号插入视频信号频谱的未使用部分。 数据信号在接收机中与视频信号分离，并且可以用于任何目的，甚至与视频信号无关的目的。 对数据信号进行滤波以产生具有对应于视频信号频谱的未使用部分的频谱特性的滤波数据信号。 经滤波的信号调制其频率被选择以允许将经调制的滤波数据信号直接插入到视频信号频谱中的载波信号。 在接收机中，以正常方式处理视频信号; 并且数据信号不被普通电视接收机检测到。 信号分离器将经滤波的数据信号与组合的视频信号分离，逆滤波器恢复原始数据信号。 在一个实施例中，梳状滤波器用于产生具有60赫兹峰值的滤波数据信号。 接收机中的反梳状滤波器恢复原始数据信号。 还可以使用再循环缓冲器来产生经滤波的数据信号。

公开(公告)号：US5621471A

公开(公告)日：1997-04-15

申请号：US237265

申请日：1994-05-03

申请人： William E. Kim ,  Nathan P. Myhrvold ,  Gideon A. Yuval

发明人： William E. Kim ,  Nathan P. Myhrvold ,  Gideon A. Yuval

IPC分类号： H04N7/08 ,  H04N7/081

CPC分类号： H04N7/081 ,  H04N7/0803

摘要： A system and method for modulating a data signal uses a phase shifting transformer function to phase shift the lower and upper sidebands of the data signal so that the sidebands of the data signal have a 180.degree. phase shift with respect to each other (i.e., are complementary). The phase shifted sidebands are added to a standard video signal and then transmitted. A television or other video receiver demodulates the video signal with a simple demodulator circuit, which causes the upper and lower sidebands to be summed together. The data signal, with complementary sidebands, cancels out so that the data signal does not interfere with normal video operation. The upper and lower sidebands of the data signal are processed separately from the video processing circuitry of the television receiver. An inverse phase shifting circuit performs a second phase shift operation on the upper and lower sidebands of the data signal so that the data signal can be demodulated and the data signal recovered.

摘要翻译： 用于调制数据信号的系统和方法使用相移变换器功能来相移数据信号的下边带和上边带，使得数据信号的边带相对于彼此具有180°的相移（即， 补充）。 相移的边带被添加到标准视频信号中，然后发送。 电视机或其他视频接收机用简单的解调器电路对视频信号进行解调，这使得上边带和下边带相加在一起。 具有互补边带的数据信号被取消，使得数据信号不会干扰正常的视频操作。 数据信号的上边带和下边带与电视接收机的视频处理电路分开处理。 逆相移电路对数据信号的上边带和下边带执行第二相移操作，使得可以解调数据信号并恢复数据信号。

公开(公告)号：US5539471A

公开(公告)日：1996-07-23

申请号：US254363

申请日：1994-05-03

申请人： Nathan P. Myhrvold ,  Gideon A. Yuval ,  William E. Kim

发明人： Nathan P. Myhrvold ,  Gideon A. Yuval ,  William E. Kim

IPC分类号： H04N7/08 ,  H04N7/081

CPC分类号： H04N7/081

摘要： A system and method for inserting a data signal into a preexisting video signal in a transmitter so that the data signal is transmitted along with the video signal. The data signal is inserted into an unused portion of the video signal spectrum. The data signal is separated from the video signal in a receiver and may be used for any purpose, even purposes unrelated to the video signal. The data signal is filtered to create a filtered data signal having spectral characteristics that correspond to the unused portion of the video signal spectrum. The filtered signal modulates a carrier signal whose frequency is selected to permit direct insertion of the modulated filtered data signal into the video signal spectrum. In the receiver, the video signal is processed in a normal manner; and the data signal is undetected by normal television receivers. A signal separator separates the filtered data signal from the combined video signal, and an inverse filter recovers the original data signal. In one embodiment, a comb filter is used to generate the filtered data signal with 60 Hertz peaks. An inverse comb filter in the receiver recovers the original data signal. A recirculating buffer may also be used to generate the filtered data signal.

摘要翻译： 一种用于将数据信号插入到发射机中的先前存在的视频信号中的系统和方法，使得数据信号与视频信号一起发送。 数据信号插入视频信号频谱的未使用部分。 数据信号在接收机中与视频信号分离，并且可以用于任何目的，甚至与视频信号无关的目的。 对数据信号进行滤波以产生具有对应于视频信号频谱的未使用部分的频谱特性的滤波数据信号。 经滤波的信号调制其频率被选择以允许将经调制的滤波数据信号直接插入到视频信号频谱中的载波信号。 在接收机中，以正常方式处理视频信号; 并且数据信号不被普通电视接收机检测到。 信号分离器将经滤波的数据信号与组合的视频信号分离，逆滤波器恢复原始数据信号。 在一个实施例中，梳状滤波器用于产生具有60赫兹峰值的滤波数据信号。 接收机中的反梳状滤波器恢复原始数据信号。 还可以使用再循环缓冲器来产生经滤波的数据信号。