公开(公告)号：US5327182A

公开(公告)日：1994-07-05

申请号：US896229

申请日：1992-06-10

申请人： Michael Kohut ,  Dana Wood ,  Paul Wood ,  Jeff Taylor ,  Leroy Reese ,  Aram Tanielian ,  Jaye M. Waas ,  Mark Waring ,  George Carlsen

发明人： Michael Kohut ,  Dana Wood ,  Paul Wood ,  Jeff Taylor ,  Leroy Reese ,  Aram Tanielian ,  Jaye M. Waas ,  Mark Waring ,  George Carlsen

IPC分类号： G03B31/02 ,  G11B7/00 ,  G11B7/003 ,  G11B7/20 ,  G06F11/00

CPC分类号： G11B7/0032 ,  G03B31/02

摘要： A method and apparatus for reading digital audio signals photographically recorded on a medium (such as motion picture film). If the medium has multiple, spatially separated digital and analog audio soundtracks, a photosensitive detector array is employed for each of the digital audio soundtrack areas, and a separate analog soundtrack read head is employed. Preferably, digital error code is recorded in a digital soundtrack area of the medium (with digital audio bits), and error detection and correction are performed on the recorded digital audio bits read from the medium. Preferably, the apparatus includes switching circuitry for substituting a corresponding analog audio signal for one or more corrupted digital soundtrack channels, when such digital soundtrack channels have an error rate which exceeds a selected threshold. Also preferably, the invention reads recorded digital audio information by projecting a laser beam (having a near infrared wavelength) on a row of a digital soundtrack area of a motion picture film, to modulate the beam as it passes through the row. The radiation transmitted through each digital soundtrack bit area is projected onto a spot in the detector plane that is substantially larger than the dimension of each individual detector which receives the spot. As the film translates continuously relative to the radiation source so that the projection of the spot translates relative to each receiving detector, the output of each receiving detector is integrated over the period during which a portion of the spot is projected thereon.

摘要翻译： 一种用于读取照相记录在介质（例如电影胶片）上的数字音频信号的方法和装置。 如果介质具有多个空间上分离的数字和模拟音频声轨，则对每个数字音频声道区域采用光敏探测器阵列，并且采用单独的模拟声轨读头。 优选地，数字错误代码被记录在介质的数字音轨区域（具有数字音频位）中，并且对从介质读取的记录的数字音频位执行错误检测和校正。 优选地，当这种数字声道通道具有超过所选择的阈值的错误率时，该装置包括用于将相应的模拟音频信号替换为一个或多个损坏的数字声道通道的切换电路。 还优选地，本发明通过将激光束（具有近红外波长）投影在电影胶片的数字音轨区域的行上来读取记录的数字音频信息，以在通过行时对其进行调制。 通过每个数字音轨位区传输的辐射被投射到检测器平面中的一个点上，该位点基本上大于接收该点的每个单个检测器的尺寸。 随着胶片相对于辐射源连续地平移，使得光点的投影相对于每个接收检测器平移，每个接收检测器的输出在该点的一部分投影在其上的期间被积分。

公开(公告)号：US5621489A

公开(公告)日：1997-04-15

申请号：US605685

申请日：1996-02-22

申请人： Michael Kohut ,  Dana Wood ,  Paul Wood ,  Jeff Taylor ,  Leroy Reese ,  Aram Tanielian ,  Jaye M. Waas ,  Mark Waring ,  George Carlsen

发明人： Michael Kohut ,  Dana Wood ,  Paul Wood ,  Jeff Taylor ,  Leroy Reese ,  Aram Tanielian ,  Jaye M. Waas ,  Mark Waring ,  George Carlsen

IPC分类号： G03B31/02 ,  G11B7/00 ,  G11B7/003 ,  G11B7/20

CPC分类号： G11B7/0032 ,  G03B31/02

摘要： A photosensitive medium, such as motion picture film, having digital audio signals photographically recorded thereon. If the medium has multiple, spatially separated digital and analog audio soundtracks, a photosensitive detector array is employed for each of the digital audio soundtrack areas, and a separate analog soundtrack read head is employed. Preferably, digital error code is recorded in a digital soundtrack area of the medium (with digital audio bits), and error detection and correction are performed on the recorded digital audio bits read from the medium. Preferably, the apparatus includes switching circuitry for substituting a corresponding analog audio signal for one or more corrupted digital soundtrack channels, when such digital soundtrack channels have an error rate which exceeds a selected threshold. Also preferably, the invention reads recorded digital audio information by projecting a laser beam (having a near infrared wavelength) on a row of a digital soundtrack area of a motion picture film, to modulate the beam as it passes through the row. The radiation transmitted through each digital soundtrack bit area is projected onto a spot in the detector plane that is substantially larger than the dimension of each individual detector which receives the spot. As the film translates continuously relative to the radiation source so that the projection of the spot translates relative to each receiving detector, the output of each receiving detector is integrated over the period during which a portion of the spot is projected thereon.

摘要翻译： 具有摄影记录的数字音频信号的电影胶片等感光媒体。 如果介质具有多个空间上分离的数字和模拟音频声轨，则对每个数字音频声道区域采用光敏探测器阵列，并且采用单独的模拟声轨读头。 优选地，数字错误代码被记录在介质的数字音轨区域（具有数字音频位）中，并且对从介质读取的记录的数字音频位执行错误检测和校正。 优选地，当这种数字声道通道具有超过所选择的阈值的错误率时，该装置包括用于将相应的模拟音频信号替换为一个或多个损坏的数字声道通道的切换电路。 还优选地，本发明通过将激光束（具有近红外波长）投影在电影胶片的数字音轨区域的行上来读取记录的数字音频信息，以在通过行时对其进行调制。 通过每个数字音轨位区传输的辐射被投射到检测器平面中的一个点上，该位点基本上大于接收该点的每个单个检测器的尺寸。 随着胶片相对于辐射源连续地平移，使得光点的投影相对于每个接收检测器平移，每个接收检测器的输出在该点的一部分投影在其上的周期内被积分。

公开(公告)号：US5453802A

公开(公告)日：1995-09-26

申请号：US896412

申请日：1992-06-10

申请人： Michael Kohut ,  Dana Wood ,  Paul Wood ,  Jeff Taylor ,  Leroy Reese ,  Aram Tanielian ,  Jaye M. Waas ,  Mark Waring ,  George Carlsen

发明人： Michael Kohut ,  Dana Wood ,  Paul Wood ,  Jeff Taylor ,  Leroy Reese ,  Aram Tanielian ,  Jaye M. Waas ,  Mark Waring ,  George Carlsen

IPC分类号： G03B31/02 ,  G11B7/00 ,  G11B7/003

CPC分类号： G11B7/0032 ,  G03B31/02

摘要： A method and apparatus for photographically recording digital audio signals, and a medium having digital audio signals photographically recorded thereon. In a preferred embodiment, a motion picture film recorded in accordance with the invention has multiple digital audio soundtracks and an analog audio soundtrack photographically recorded thereon. Two or more channels of digital audio information can be recorded in each digital soundtrack, along with additional digital information for clocking, tracking, and error detection and correction. Each digital soundtrack is recorded in an array of bit areas arranged in row and column order. In a class of preferred embodiments, each row of digital audio bits is recorded simultaneously by exposing the film to radiation that has been modulated by a linear shutter array. The radiation transmitted by each shutter array is projected onto a row of spots. Each spot covers the full width of one of the bit areas in a row, but only part of the length of the bit area. As the medium is translated continuously (lengthwise) relative to the projected spots, each of the spots sweeps across a bit area, thereby recording a bit in the bit area which it sweeps in a manner analogous to painting the bit area with a paint brush.

摘要翻译： 用于照相地记录数字音频信号的方法和装置，以及在其上照相记录有数字音频信号的介质。 在优选实施例中，根据本发明记录的电影胶片具有多个数字音频声带和在其上照相记录的模拟音频声轨。 可以在每个数字音轨中记录两个或更多个数字音频信息通道，以及用于时钟，跟踪和错误检测和校正的附加数字信息。 每个数字音轨被记录在以行和列顺序布置的位区域的阵列中。 在一类优选实施例中，通过将胶片暴露于已经被线性快门阵列调制的辐射，同时记录每排数字音频位。 由每个快门阵列传输的辐射被投射到一排斑点上。 每个点覆盖一行中的一个位区域的全宽，但仅覆盖位区域的长度的一部分。 随着介质相对于投影点连续地（纵向地）平移，每个点都扫过一个位区域，从而以类似于用油漆刷涂刷钻头区域的方式在钻头区域中记录位。