Method for transmitting and/or receiving audio signals
AssigneesSTMicroelectronics (Rousset) SAS, STMicroelectronics (Alps) SAS
InventorsJonathan Cottinet, Jean Claude Bini
Life of this patent
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Abstract
A method for transmitting and/or receiving a potential aggressor audio signal includes a transmission and/or a reception of successive groups of data timed by a first clock signal within respective successive frames synchronized by a second clock signal. In the presence of a risk of interference of the potential aggressor audio signal with a different, potential victim, signal, during the transmission or reception of the potential aggressor audio signal, the frequency of the first clock signal is modified while keeping the frequency of the second clock signal unchanged.
Claims19
A method, comprising:
- receiving a group of digital data of successive groups of digital data, wherein the receiving the successive groups of digital data is timed by a synchronization clock signal having a first frequency;
- serializing data bits of the group of digital data, wherein the serializing is timed by a transmission clock signal having a second frequency higher than the first frequency;
- generating a processing time window for the serialized data bits of the group of digital data, wherein the processing time window begins at a first active edge of the transmission clock signal, wherein the first active edge of the transmission clock signal immediately precedes a second active edge of the transmission clock signal, wherein the second active edge of the transmission clock signal coincides in time with a first active edge of the synchronization clock signal;
- and
- transmitting the serialized data bits within the processing time window commencing from the second active edge of the transmission clock signal.
A device, comprising:
- a system for transmitting and receiving signals, the system comprising:
- a first clock generator configured to generate a synchronization clock signal having a first frequency;
- a second clock generator configured to generate a transmission clock signal having a second frequency greater than the first frequency;
- a receiver configured to receive a group of digital data of successive groups of digital data, wherein the receiving the successive groups of digital data is timed by the synchronization clock signal;
- a transmitter coupled to the first clock generator, the second clock generator, and the receiver, the transmitter comprising:
- a data serialization circuit configured to serialize data bits of the group of digital data, wherein the serializing is timed by the transmission clock signal;
- and
- a window generation circuit configured to generate a processing time window for the serialized data bits of the group of digital data, wherein the processing time window begins at a first active edge of the transmission clock signal, wherein the first active edge of the transmission clock signal immediately precedes a second active edge of the transmission clock signal, wherein the second active edge of the transmission clock signal coincides in time with a first active edge of the synchronization clock signal;
- and
- wherein the transmitter is configured to transmit the serialized data bits within the processing time window commencing from the second active edge of the transmission clock signal.
A method comprising:
- receiving a group of N data bits in parallel;
- comparing harmonics of a first transmission frequency to a frequency plan to be preserved;
- changing the first transmission frequency to a second transmission frequency in response to determining that a harmonic of the first transmission frequency corresponds with a frequency of the frequency plan;
- serializing the group of N data bits at the second transmission frequency;
- and
- transmitting the group of N data bits at the second transmission frequency within a period of a synchronization clock signal using a transmission clock signal.
Dependencies are inferred from the claim text.