Pulse or digital communications – Transmitters
Reexamination Certificate
2005-11-01
2005-11-01
Vo, Don N. (Department: 2631)
Pulse or digital communications
Transmitters
Reexamination Certificate
active
06961389
ABSTRACT:
A digital transmission system is disclosed having a transmitter and a receiver for transmitting and receiving a digital audio signal. The digital audio signal is in the form of samples of a specific wordlength and occurring at a specific sampling rate. The transmitter including an input terminal for receiving the digital audio signal and for receiving a first information word having a relationship with the specific wordlength and a second information word having a relationship with the specific sampling rate. A formatting unit is present far combining the digital audio signal and the first and second information words into a serial datastream suitable for transmission via a transmission medium. The wordlength of the samples in the digital audio signal, expressed in number of bits, being equal to n, where n is an integer larger than zero, and the sampling rate is equal to 2p.Fs, where p is an integer larger than zero and Fsis equal to a frequency value taken from a group of at least two frequency values, said group of frequency values including 44.1 kHz and 48 kHz.The receiver comprises a sample rate converter for converting the sampling rate of the signal received.
REFERENCES:
patent: 5225787 (1993-07-01), Therssen
patent: 5323396 (1994-06-01), Lokhoff
patent: 5627536 (1997-05-01), Ramirez
patent: 5719571 (1998-02-01), Akune et al.
Belk Michael E.
Koninklijke Philips Electronics , N.V.
Vo Don N.
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