Method and apparatus for synchronization of ancillary information in film conversion
First Claim
1. A digital audio processor for film conversion, the digital audio processor comprising:
- an analog-to-digital converter configured to receive an analog audio signal and produce a corresponding digitized audio signal;
a data buffer configured to temporarily store the 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 film conversion rate of film images; 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.
1 Assignment
0 Petitions
Accused Products
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.
60 Citations
13 Claims
-
1. A digital audio processor for film conversion, the digital audio processor comprising:
-
an analog-to-digital converter configured to receive an analog audio signal and produce a corresponding digitized audio signal;
a data buffer configured to temporarily store the 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 film conversion rate of film images; 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. A digital processor to synchronize ancillary information with film images during a film conversion session, the digital processor comprising:
-
means for converting the ancillary information in the form of analog signals to digital signals and frequency shifting the digital signals to achieve a selected data rate that matches rate of film conversion;
means for adjusting data rates of the ancillary information in the form of digital signals to achieve the selected data rate;
means for decoding the ancillary information in the form of encoded data and re-encoding the data to achieve the selected data rate; and
means for formatting the ancillary information at the selected data rate and combining the formatted ancillary information with the film images in a standard motion picture format. - View Dependent Claims (7, 8, 9, 10, 11, 12)
-
-
13. A method of synchronizing audio with film images during a film conversion session, the method comprising:
-
converting analog input signals to digital signals;
buffering the digital signals for subsequent processing;
frequency shifting the digital signals to achieve a selected data rate to match a film conversion rate;
formatting the digital signals 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 film images conforming to a standard motion picture format.
-
Specification