Control architecture for a high-throughput multi-processor channel decoding system

• US 20020087998A1
• Filed: 12/28/2000
• Published: 07/04/2002
• Est. Priority Date: 12/28/2000
• Status: Active Grant

• Current Assignee: Funai Electric Co., Ltd.
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Burns, Geoffrey Francis
• Granted Patent: US 7,225,320 B2
• Time in Patent Office: Days
• US Class Current: 725/100
• CPC Class Codes: H04N 21/426 Internal components of the client ; Characteristics thereof H04N5/44 takes precedence
• CPC Class Codes: Y10S 707/99938 Concurrency, e.g. lock management in shared database
• CPC Class Codes: Y10S 707/99952 Coherency, e.g. same view to multiple users

Abstract

A multi-processor unit includes a first domain for processing data according to first configuration information and having multiple first domain processors each connected to communication apparatus and each performing a different function of the first processing. The first domain processors include a first domain control processor for controlling the first processing of the first domain. The multi-processor unit also includes a second domain for second processing of the first processed data depending on a second domain configuration and having multiple second domain processors each connected to the communication apparatus and each performing a different function of the second processing. The second domain processors include a second domain control processor for controlling the second processing of the second domain. The multi-processor unit also including a global control processor connected to the communication means for providing the first domain configuration information and the second domain configuration information through the communication means for configuring the first and second domains.

Claims

1. A multi-processor unit (100), comprising:

communication means (101, 102) for receiving data into the unit, transmitting data from the unit;

first domain processing means (103) for first processing the data depending on first domain configuration information, the first domain processing means including multiple first domain processors (105-108) each connected to the communication means for receiving data and transmitting data to the communication means including data transmitted between processors, each first domain processor differently sub-processing the data in order to first process the data, the first domain processors including a first domain control processor (105) for controlling the first processing of the first domain;

second domain processing means (110) for second processing the first processed data depending on second domain configuration information, the second processing being different than the first processing, the second domain processing means including multiple second domain processors (111-115) each connected to the communication means for receiving data and transmitting data to the communication means including data transmitted between processors, each second domain processor differently sub-processing the data in order to second process the data, the second domain processors including a second domain control processor (111) for controlling the second processing of the second domain; and

a global control processor (120) connected to the communication means for providing the first domain configuration information and the second domain configuration information through the communication means for configuring the first and second domains.

2. The multi-processor unit of claim 1, in which:

the communication means include a stream-based communication means (101) connected to the global control processor and connected to a plurality of the processors of the first and second domains including the first and second domain control processors for transmitting information streams between the connected processors;

the stream-based communications means are connected to an input/output bus (120) to at times receive a stream of data into the multi-processor unit through the stream-based communications means into one of the connected processors and to at other times transmit a stream of data from one of the connected processors through the stream-based communications means onto the input/output bus;

the multi-processor unit includes blocks (130-136) of electronic memory (137) and the communication means includes block-based communication means (138) connected to the memory blocks and connected to one or more of the first domain processors and one or more of the second domain processors for selectively interconnecting the connected processors to the memory blocks, with only one processor at a time being interconnected to one of the memory blocks, and processors of different domains being interconnected at different times to the same memory block;

the control of the domain control processors during operation includes data flow driven control so that receiving a data object through the stream-based communication means triggers processing by the domain control processor;

the data objects include data and indicators of memory blocks, when a domain receives an indicator of a memory block it has exclusive access to the memory block and when the domain passes the indicator of the memory block it yields all access to the memory block;

the indicators of memory blocks include addresses of the memory blocks;

each domain control processor, controls access between the memory blocks that the domain has exclusive access to and the processors of the domain;

each processor that is connected to the block-based communication means receives data from the memory blocks and stores data in the memory blocks through address and data registers (140-145) of the processor and control signals from the domain control processor control operations of the registers of the processors of the domain that load and store information to the memory blocks exclusively accessed by the domain;

within the domains, control of the processors includes data flow driven control depending on data received by the processor from the stream-based communication means and from the memory blocks through the registers controlled by the domain control processor;

within the domains, control of the processors includes direct control by the domain control processor by control signals provided directly through control lines (150, 151) to the other domain processors from the domain control processor;

at least one of the domain control processors includes a periodic sequencer that initiates control commands transmitted to other processors to initiate subroutines in those processors depending on an index counter;

the processing of the first domain including FFT and IFFT processing of blocks of data in the memory blocks;

the processing of the second domain including equalization of blocks of data in the memory blocks;

the multi-processor unit further comprises a third domain processing means (160) including at least one processor (161) connected to the stream-based communication means for forward error correction of a stream of data;

each processor is structurally different from the other processors of the multi-processor unit for performing a different portion of channel decoding of transmission signals;

the first and second domain configuration information configures the domains for channel decoding transmissions based on different modulation standards;

the configuration information provided by the global control processor at times configures the first domain processing means and the second domain processing means for channel decoding 8-VSB transmissions based on the ATSC standard;

the configuration information provided by the global control processor at other times configures the first domain processing means and the second domain processing means for channel decoding COFDM transmissions based on the DVB-T standard.

3. An integrated circuit chip (300) containing the multi-processor unit (100) of claim 1, comprising:

a substrate (301) of semiconductor material with different portions having different levels of impurities; and

a layer of insulation (302, 303) on the semiconductor substrate;

a layer of wiring (304, 305) including connection pads (306, 307) for flip-chip or wire-bond connection to a circuit board; and

wherein the different portions of semiconductor material and wiring layer provide the multi-processor unit (100) of claim 1.

4. A circuit board assembly (310) including the integrated circuit chip of claim 3, comprising:

a circuit board substrate (311);

a wiring layer (312) on the circuit board substrate including connection pads for an integrated circuit chip;

the integrated circuit chip (300) of claim 3 mounted on the circuit board substrate; and

flip-chip or wire-bond connections (313, 314) between the connection pads of the integrated circuit chip and the connection pads of the wiring layer.

5. A set-top-box (320) containing the circuit board assembly (310) of claim 4, comprising:

a connection (321) for receiving a channel encoded multimedia signal;

a connection (322) for transmitting a channel decoded multimedia signal;

the circuit board assembly (310) of claim 4 for decoding the encoded multimedia signal to provide the decoded multimedia signal; and

a power supply (323) connected to the circuit board assembly to provide power.

6. A digital television set (330) containing the circuit board assembly (310) of claim 4, comprising:

a source (331) for providing a channel encoded multimedia signal from a transmission media;

the circuit board assembly (310) of claim 4, for decoding the encoded multimedia signal to provide a decoded multimedia signal;

a power supply (332) connected to the circuit board assembly to provide power to the circuit board assembly;

a display (333) connected to the circuit board assembly for presenting the video signals of the decoded multimedia signal; and

a connection (334) for a load speaker (335) for presenting audio signals of the decoded multimedia signal.

7. A multi-processor system for processing data, comprising:

a plurality of memory blocks in an electronic memory;

block-based communication means connected to the memory blocks to provide access to the memory blocks;

stream-based communication means;

a plurality of processors connected to the block-based communication means for processing data in the memory blocks and connected to the stream-based communication means for providing data objects from a processor to a subsequent processor, the data objects including data for processing the data and pointers to memory blocks to control access to the memory blocks, the processors having means for data flow driven process control so that receiving data objects from a previous processor through the stream-based communication means triggers processing by the subsequent processor that receives those data objects, each processor having exclusive control for accessing data in one or more of the memory blocks, and each processor receiving the exclusive control of a memory block by receiving the pointer to the memory block from the previous processor through the stream-based communications means and each processor yielding exclusive control to the subsequent processor by providing a pointer to the memory block to the subsequent processor through the stream-based communication means.