Circuit and method for recording and playing back voice and other sounds in digital mobile radio devices
AssigneeInfineon Technologies AG
InventorsWerner Hein, Johann Steger, Jurgen Paulus
Life of this patent
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Abstract
A circuit for recording and playing back voice in digital mobile radio devices and a method for appropriately recording and playing back the voice. The circuit includes a transmit-end voice encoder, a receive-end voice decoder, a memory for the recorded signals, a further voice encoder whose output is connected to the memory, and a further voice decoder whose input is connected to the memory.
Claims11
A circuit for recording and playing back voice and other sounds in digital mobile radio devices, comprising:
- a transmit signal path including a first voice encoder configured therein for encoding voice signals to be transmitted via a radio link;
- a receive signal path including a first voice decoder configured therein for decoding voice signals received via the radio link;
- a memory for storing voice signals and for outputting the voice signals;
- a second voice encoder having an output connected to said memory;
- and
- a second voice decoder having an input connected to said memory for receiving the voice signals output from said memory, said second voice decoder configured for decoding the voice signals output from said memory and for sending the voice signals output from said memory to a loudspeaker;
- said first voice decoder configured to always decode ones of the voice signals received via the radio link that are to be stored in said memory and to send the decoded ones of the voice signals to said second voice encoder for subsequent encoding.
A method for recording and playing back voice and other sounds in digital mobile radio devices in which the voice is transmitted in digitally encoded form and a possibility for storing voice signals is provided, which comprises:
- transmitting a voice signal in a digitally encoded form via a radio link;
- always using a method to encode a voice signal to be stored that is independent from a method used to encode the voice signal that is transmitted via the radio link;
- and
- always using a method to decode the stored voice signal that is independent from a method used to decode the voice signal that is transmitted via the radio link.
Dependencies are inferred from the claim text.