DE102009028082A1 - Apparatus and method for processing data - Google Patents

Abstract

The invention relates to a device for processing data with a central processor unit and a P Fast Fourier transformation unit (9), the central processor unit (7) having memory units (3, 4, 5, 6) and a synchronization unit via a bus (8) (10) is in signal connection, input data (1) being processable and result data being able to be generated, further devices (11, 12, 13) being available. The invention also relates to a related method.

Description

Technical area

The The invention relates to an apparatus for processing data according to The preamble of claim 1. Furthermore, the invention relates a related procedure.

State of the art

In Today's devices, such as in particular in radio or television reception devices or in navigation devices or in other electronic Devices usually become data streams received from other electronic devices and from these devices further processed for given purposes. So be with Navigation devices Data streams from navigation satellites used for position determination. Analyze these devices while the incoming data or data streams, for example on authenticity, and for example, perform correlations, Channel estimations or symbol recognition by.

For example, by the JP 2003255040 A a GPS receiver has become known, which receives signals from different GPS satellites and performs a position determination of the device on the basis of this data.

there becomes one for determining the result of different data so called Fast Fourier Transformation (FFT), to further process the transformed data. For example The added data is FFT-processed and multiplied by other data.

The US 2007/0164901 A1 discloses a multifunctional device having a positioning system and an actual time positioning processor. The device comprises a use-shared processor which is used for the position-determining device and its tasks, but which is also used for tasks of other processes or devices. The other processes are for example radio reception. In this case, the device has an FFT calculation unit for calculating correlations.

adversely In this case, the actual-time positioning processor determines the position performs and other processes by means of a central processing unit be performed and the central processing unit the Results of the position determination further processed, whereby the Processes thereby with a rigid process distribution between the Processors are performed. This can not be optimal Process implementation be realized.

DESCRIPTION OF THE INVENTION: Problem, Solution, advantages

It The object of the invention is an apparatus and a method to create a flexible implementation of processes allowed and relieves a central processing unit so that they are also available for other purposes can.

This is achieved with the features of claim 1, wherein a device for processing data with a central processing unit and a programmable Fast Fourier transformation unit created is, wherein the central processing unit via a bus with at least individual storage units and a synchronization unit is in signal connection, wherein input data can be processed and result data can be generated, the further devices for Are available adjustable. This will split the processes between a central processor unit and an FFT unit allows to dynamically switch between these units Split process execution. The data communication between the units is beneficial over a bus realized.

Farther a method is provided which is used to control a device for analyzing data with a central processing unit and a programmable Fast Fourier transformation unit used is, wherein the central processing unit via a bus with at least individual storage units and a synchronization unit is in signal connection, wherein input data is processed and result data are generated, the other devices for Will be provided.

there It is advantageous if tasks, calculations and / or processes between the central processing unit and the programmable one Fast Fourier transformation unit are divisible, so that dynamic Processes split between these two units become.

Further Benefits emerge from the dependent claims and from the following description of an embodiment.

Brief description of the drawings

below the invention is based on an embodiment explained in more detail with reference to the drawings. It shows:

1 a block diagram for illustrating the device according to the invention.

Preferred embodiment the invention

The 1 shows a block diagram for illustrating the device according to the invention 100 for processing data, such as data streams or data strings. This will be the device 100 input side input data 1 fed, these data are fed via data links. These data connections can advantageously be wired signal connections, but they can also be advantageous wireless signal connections, such as by radio, telephony, etc.

The different incoming input data 1 can thereby come from different data sources and thus, for example, also different data formats, so that the input data 1 also not compatible with each other in terms of their data format.

The input data 1 are input in a first step on a block given to a converter 2 represents which the data of the input data 1 , which can be present in different data formats, so converted that all input data 1 due to the treatment by the converter 2 exist in a predetermined uniform data format for the same further processing. It is particularly advantageous if the data after the treatment of the converter 2 present in a resulting data format that enables a Fast Fourier Transform (FFT) process. If this is not yet the case, a further format transformation of the data can advantageously be carried out. It can be a configurable mixer, a filter, such as a decimation filter, and / or a sample rate converter in which the converter 2 be implemented performing block.

These converted input data, such as data stream or data string, due to the treatment by the converter 2 representing block, in the next block in an input memory 3 saved. Subsequently, the transformed input data can be converted into blocks by the Programmable Fast Fourier Transformation Process (PFFT) 9 be further processed.

The programmable fast Fourier transformation process (PFFT) is advantageous by a program memory 4 controlled, the process in block 9 Also, arithmetic operations such as multiplication and / or fast Fourier transform operations, iFFT operations (inverse FFT operation), root operations, quadrature operations, maximum detection, etc. In addition, commands for program partitioning and program control can be implemented, in addition also Data transfer commands may be implemented, such as data copying commands, copying to memory, maximum recognition, etc. This implementation, for example, allows the mixer to specify frequency steps for searching in the frequency domain and to find settings for the sample rate converter setting, such as effects due to the Doppler effect. In addition, a coherent and / or non-coherent signal accumulation of the data in the input memory 3 be implemented.

The result of the block 9 is stored in a result store 5 saved.

The internal memory 6 are used to store intermediate results or intermediate data.

The memories become input memories 3 , Program memory 4 , Results memory 5 and / or internal memory 6 through a central processing unit (CPU) 7 designed to be controllable, this central processing unit (CPU) 7 via a data bus 8th the memory 3 . 4 . 5 . 6 controls or reads into this data or reads data from it.

The data of the result of the PFFT block 9 be in a synchronization stage 10 synchronized or can based on the result data of the block 9 or the result memory 5 Synchronization data or signals generate to synchronize other devices with the blocks 11 . 12 . 13 be represented. Advantageously, the other devices 11 . 12 . 13 by the bus 14 communicate with the central processing unit (CPU). By communicating between the central processing unit (CPU) 7 and the sync block 10 can perform computational tasks between the PFFT block 9 and the central processing unit and / or data can be easily exchanged.

Advantageous are other devices called digital broadcasting devices, also called DAB (Digital Audio Broadcasting), possible. Also, so-called GNSS devices are possible, which are known as Devices of a Global Navigation Satellite System known which are typically the GPS devices and alternative Systems such as Galileo and / or the Russian GLONASS system used could. Also, FM / RDS devices can be used be.

The sync block is also included 10 through the central processing unit (CPU) 7 controllable, which in turn advantageous over the bus 8th he follows.

The data connections between the blocks are advantageous 3 . 4 . 5 . 6 and 10 bidirectional.

It is particularly advantageous that the PFFT block 9 at least once via the program memory 4 all further calculations without further access or without further support of the central processing unit (CPU) 7 can be carried out. The PFFT block 9 can be regarded as a self-contained or self-acting unit, which in this context is opposite to the central processing unit (CPU) 7 self-sufficient. This allows a variety of extensive calculations from the central processing unit (CPU) 7 be relieved of their discharge, so that they can handle other tasks. In particular, the PFFT block 9 via the synchronization level 10 Data without further support of the central processing unit (CPU) 7 with the blocks 11 . 12 . 13 synchronize. An interaction between the central processing unit (CPU) 7 and the PFFT block 9 can be done for example in a so-called interrupt routine (interrupt). For example, a signal through the PFFT block 9 found, an interrupt signal to the central processing unit (CPU) 7 outputted, whereupon the central processing unit (CPU) 7 controls the further processing or the further process in this regard. This allows extensive and sophisticated analysis and control algorithms to be performed, as the computing means between the PFFT block 9 and the central processing unit (CPU) 7 can be cleverly divided as needed.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• JP 2003255040 A [0003]
• US 2007/0164901 A1 [0005]

Claims (7)

Device for processing data with a central processor unit and a programmable fast Fourier transformation unit ( 9 ), characterized in that the central processor unit ( 7 ) via a bus ( 8th ) with at least individual storage units ( 3 . 4 . 5 . 6 ) and a synchronization unit ( 10 ) is in signal connection, wherein input data ( 1 ) are processable and result data can be generated, the further devices ( 11 . 12 . 13 ) are available. Device according to claim 1, characterized in that at least some of the further devices ( 11 . 12 . 13 ) via a bus ( 14 ) with the central processing unit ( 7 ) keep in touch. Apparatus according to claim 1 or 2, characterized in that the memory units ( 3 . 4 . 5 . 6 ) comprise a Eingansspeicher and / or a program memory and / or a result memory and / or internal memory. Device according to claim 1, 2 or 3, characterized in that the input data ( 1 ) before further processing by a converter ( 2 ) are transformed to a common data format. Device according to one of the preceding claims, characterized in that a further device is a digital Broadcasting devices, a device of a global navigation satellite system and / or an FM / RDS device. Method for controlling a device for processing data with a central processor unit and a P fast Fourier transformation unit ( 9 ), characterized in that the central processor unit ( 7 ) via a bus ( 8th ) with at least individual storage units ( 3 . 4 . 5 . 6 ) and a synchronization unit ( 10 ) is in signal connection, wherein input data ( 1 ) and result data are generated, the other devices ( 11 . 12 . 13 ) to provide. A method according to claim 6, characterized in that tasks, calculations or processes between the central processing unit ( 7 ) and the Fast Fourier Transformation Unit ( 9 ) are divisible so that dynamically processes between these two units ( 7 . 9 ).

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