Apparatus for processing and generating data using a digital signal processor
First Claim
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1. An apparatus for processing and generating data, comprising:
- a digital signal processor; and
an interface unit connected to said digital signal processor, said interface unit being adapted to read in and preprocess data for said signal processor and to postprocess and output data from said digital signal processor;
said interface unit including a preprocessing and post-processing device for preprocessing and postprocessing the data, and a memory device connected to said preprocessing and postprocessing device and to said digital signal processor;
said preprocessing and postprocessing device including an expansion/compression device adapted to expand input data and to compress output data;
said memory device being divided into four memory areas including two memory areas reserved for write access by said preprocessing and postprocessing device and for read access by said digital signal processor, and two memory areas reserved for write access by said digital signal processor and for read access by said preprocessing and postprocessing device; and
wherein said digital signal processor is an ISDN processor and the apparatus is an integral part of an ISDN switching system.
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Abstract
The invention describes a method and apparatus for processing and generating data using a digital signal processor. An interface unit for the signal processor is provided that reads in and preprocesses the data to be processed and/or data required for processing and/or generating data and supplies the data for pickup by the signal processor. Also, data which the signal processor processes or generates and supplies for pickup are postprocessed and output by the interface unit.
9 Citations
11 Claims
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1. An apparatus for processing and generating data, comprising:
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a digital signal processor; and
an interface unit connected to said digital signal processor, said interface unit being adapted to read in and preprocess data for said signal processor and to postprocess and output data from said digital signal processor;
said interface unit including a preprocessing and post-processing device for preprocessing and postprocessing the data, and a memory device connected to said preprocessing and postprocessing device and to said digital signal processor;
said preprocessing and postprocessing device including an expansion/compression device adapted to expand input data and to compress output data;
said memory device being divided into four memory areas including two memory areas reserved for write access by said preprocessing and postprocessing device and for read access by said digital signal processor, and two memory areas reserved for write access by said digital signal processor and for read access by said preprocessing and postprocessing device; and
wherein said digital signal processor is an ISDN processor and the apparatus is an integral part of an ISDN switching system. - View Dependent Claims (2, 3, 4, 5, 11)
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6. An apparatus for processing and generating data, comprising:
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only a single digital signal processor;
an interface unit connected to said digital signal processor, said interface unit being adapted to read in and preprocess data for said signal processor and to postprocess and output data from said digital signal processor;
said interface unit including a preprocessing and post-processing device for preprocessing and postprocessing the data, and a memory device connected to said preprocessing and postprocessing device and to said digital signal processor;
said preprocessing and postprocessing device including an expansion/compression device adapted to expand input data and to compress output data;
said memory device being divided into four memory areas including two memory areas reserved for write access by said preprocessing and postprocessing device and for read access by said digital signal processor, and two memory areas reserved for write access by said digital signal processor and for read access by said preprocessing and postprocessing device. - View Dependent Claims (7, 8)
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9. An apparatus for processing and generating data, comprising:
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a digital signal processor;
an interface unit connected to said digital signal processor, said interface unit being adapted to read in and preprocess data for said signal processor and to postprocess and output data from said digital signal processor;
said interface unit including a preprocessing and post-processing device for preprocessing and postprocessing the data, and a memory device connected to said preprocessing and postprocessing device and to said digital signal processor;
said preprocessing and postprocessing device including an expansion/compression device adapted to expand input data and to compress output data;
said preprocessing and postprocessing device including a serial/parallel converter for converting serial input data to parallel data;
said memory device being divided into four memory areas including two memory areas reserved for write access by said preprocessing and postprocessing device and for read access by said digital signal processor, and two memory areas reserved for write access by said digital signal processor and for read access by said preprocessing and postprocessing device.
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10. An apparatus for processing and generating data, comprising:
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a digital signal processor;
an interface unit connected to said digital signal processor, said interface unit being adapted to read in and preprocess data for said signal processor and to postprocess and output data from said digital signal processor;
said interface unit including a preprocessing and post-processing device for preprocessing and postprocessing the data, and a memory device connected to said preprocessing and postprocessing device and to said digital signal processor;
said preprocessing and postprocessing device including an expansion/compression device adapted to expand input data and to compress output data;
said preprocessing and postprocessing device including a parallel/serial converter for converting parallel input data to serial data;
said memory device being divided into four memory areas including two memory areas reserved for write access by said preprocessing and postprocessing device and for read access by said digital signal processor, and two memory areas reserved for write access by said digital signal processor and for read access by said preprocessing and postprocessing device.
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Specification