System and method using mode bits to support multiple coding standards
AssigneeLucent Technologies Inc.
InventorKurt Baudendistel
Life of this patent
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Abstract
Using mode bits, multiple coding standards are supported by a single digital signal processor. The mode bits specify which coding standard is implemented so that the system will perform the correct data manipulation operations for that coding standard. Mode bits are provided for shift fifteen bits operations and shift-and-round operations.
Claims28
A method of manipulating signal information to support multiple coding standards, the method comprising the steps of:
- defining mode information in a data memory;
- setting the mode information to specify a type of data bit shift operation from a plurality of types of data bit shift operations to support the multiple coding standards;
- receiving the signal information;
- and
- performing a type of shift operation on the signal information according to the mode information such that the multiple coding standards are supported.
A data arithmetic unit for manipulating signal information to support multiple coding standards comprising:
- a data memory for storing mode information, the mode information specifying types of shift operations;
- a data shifter for accomplishing bit-wise shifts of a data word;
- and
- means, responsive to the mode information stored in the data memory, for controlling shift operations performed by the data shifter such that multiple coding standards are supported.
A digital signal processing method for manipulating signal information to support multiple coding standards, the method comprising the steps of:
- associating a plurality of mode settings with a plurality of coding standards;
- defining a plurality of mode variables in a data memory;
- assigning a mode setting to a mode variable to specify a coding standard;
- receiving the signal information;
- defining a portion of the signal information in a data word;
- and
- performing a shift operation on the data word according to the assigned mode setting such that multiple coding standards are supported.
A digital signal processing method for manipulating signal information to support multiple coding standards, the method comprising the steps of:
- associating a plurality of mode settings with a plurality of computational operations;
- defining a plurality of mode variables in a data memory;
- assigning a mode setting to a mode variable to specify a computational operation;
- receiving the signal information;
- defining a portion of the signal information in a data word;
- performing a shift operation on the data word;
- and
- routing the shifted data word to an adder operation.
Dependencies are inferred from the claim text.