Method and apparatus for synchronization of ancillary information in film conversion
First Claim
1. A digital audio processor for sequential image conversion, the digital audio processor comprising:
- a data buffer configured to temporarily store a portion of a digitized audio signal;
a pitch adjuster coupled to the output of the data buffer and configured to frequency shift the digitized audio signal to match a sequential image conversion rate; and
a formatter coupled to the output of the pitch adjuster and configured to manipulate the digitized audio signal to conform to an audio standard format.
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Abstract
A digital processor to synchronize ancillary information with film images during a film conversion session is described. The ancillary information includes metadata information and audio information. The digital processor advantageously processes the ancillary information at a speed to support faster than real-time film conversion. The ancillary information can come from various sources and in various forms. Information from analog sources is digitized for processing using digital technology. A pitch adjuster frequency shifts digitized analog signals and digital input signals to achieve a selected data rate that matches the rate of film conversion. Digitally encoded input data can be decoded and re-encoded to achieve the selected data rate. A formatter manipulates the ancillary information at the selected data rate to conform to a standard format and combines the formatted ancillary information with film images conforming to a standard motion picture format.
129 Citations
21 Claims
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1. A digital audio processor for sequential image conversion, the digital audio processor comprising:
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a data buffer configured to temporarily store a portion of a digitized audio signal;
a pitch adjuster coupled to the output of the data buffer and configured to frequency shift the digitized audio signal to match a sequential image conversion rate; and
a formatter coupled to the output of the pitch adjuster and configured to manipulate the digitized audio signal to conform to an audio standard format. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A digital processor to process ancillary information with images during a sequential image conversion session, the digital processor comprising:
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means for synchronizing the ancillary information with the images; and
means for formatting the ancillary information at a selected data rate and combining the formatted ancillary information with the images in a standard video, motion picture or multimedia format. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of synchronizing audio with images during a sequential image conversion session, the method comprising:
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converting an analog input signal to a digital signal;
buffering the digital signal for processing;
frequency shifting the digital signal to achieve a selected data rate to match a sequential image conversion rate;
formatting the digital signal at the selected data rate to produce a digital audio file conforming to a standard audio format; and
combining the digital audio file with digital images conforming to a standard video, motion picture or multimedia format.
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20. A method of synchronizing audio with images during a sequential image conversion session, the method comprising:
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buffering a digital audio signal for processing;
formatting the digital audio signal at a selected data rate to produce a digital audio file conforming to a standard audio format; and
combining the digital audio file with digital images conforming to a standard video, motion picture or multimedia format. - View Dependent Claims (21)
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Specification