CN104298464B - Adaptability element shufflers - Google Patents

Abstract

The application is related to adaptability element shufflers.System may include detector, controller, shuffle device and processor.Detector detectable signal.Controller can be based on signal control shuffle device.Shuffle device can multiple channels based on the input of multiple treatment elements of signal print shuffle processor.Processor can be according to the multiple Channel Processing signals configured by shuffle device.

Description

Adaptability element shufflers

Background technology

Perform the system of signal transacting or circuit can be used for various applications, such as audio/video processing, telecommunications transceiver Deng.Signal processing system can perform different types of processing, filtering, conversion, merging etc..Signal processing system can lead to Cross and changed using analogue-to-digital converters (ADC) and digital-analog convertor (DAC) between analog form and digital form Signal.In order to improve speed and/or accuracy, signal processing system can each include multiple processor elements, each processing Element is configured as performing similar signal processing function, and multiple treatment elements can in parallel and/or series connection interconnection.This The cost of modelled signal processing system can also be reduced, because the multiple treatment element can be replicated in the design, and nothing It need to design and simulate each element.

However, the multiple treatment elements of design iterations in signal processing system, but due to the change in manufacture, processing Some error hidings in the performance characteristic of element are probably inevitable.The error hiding of element can cause the mistake of output signal Very.For example, a main distortion sources in Δ Σ ADC are the element mismatches in Δ Σ ADC inside DAC.In order to reduce member Distortion caused by part error hiding, the treatment element in signal processing system can carry out periodically " shuffling ".That is, The signalling channel for the treatment element that signal processing system can be re-routed periodically/path configuration, so as to treatment element phase To the diverse location in its front position seizing signal processing path.When element is shuffled and the letter with the passage of time During the operation of number processing system, because the distortion of element error hiding can compensate.But element shuffling scheme can introduce others Element activity, this signal-noise ratio (SNR) that can be introduced noise and thereby signal processing system can be reduced.

Therefore, it is necessary to a kind of improved signal processing system, it is possible to reduce due to the distortion of element error hiding, and to the greatest extent simultaneously Amount reduces the noise shuffled due to element.

Brief description of the drawings

Fig. 1 shows the simplified block diagram of the system of one embodiment according to the disclosure.

Fig. 2 shows the simplified block diagram of the system of one embodiment according to the disclosure.

Fig. 3 shows the timing diagram of the shuffle operation based on signal amplitude of one embodiment according to the disclosure.

The method that Fig. 4 shows one embodiment according to the disclosure.

Embodiment

Exemplary embodiment of the invention according to Fig. 1, system 100 may include detector 110, controller 120, mix Wash device 130 and processor 140.The detectable signal 112 of detector 110.Controller 120 can be based on the signal 112 control shuffle device 130.Shuffle device 130 can be based on the more of multiple treatment element 144.1-144.N of the print shuffle processor 140 of signal 112 input Individual channel 142.1-142.N.Processor 140 can be according to the multiple channel 142.1-142.N process signals configured by shuffle device 130 112。

The shuffle device 130 can be based on signal 112 amplitude or frequency shuffle multiple treatment elements in processor 140 144.1-144.N multiple channel 142.1-142.N so that after shuffling every time, in treatment element 144.1-144.N at least One relative to the diverse location in the signal processing path that processor 140 is occupied before shuffling.It is determined that the width of the signal 112 Degree is more than or equal to after first threshold, and controller 120 can control shuffle device 130 to start to shuffle.Controller 120 can be it is determined that should The amplitude of signal 112 the first period be more than or equal to first threshold after control shuffle device 130 start to shuffle, and it is determined that The amplitude of signal 112 can be closed and shuffled after being less than first threshold in the second period.

The shuffle device 130 may include the multiple switch controlled by controller 120, to shuffle channel 142.1-142.N.Signal The position for the treatment of element 144.1-144.N in processing path can represent to associate each treatment element 144.1-144.N bit Sequentially (for example, higher or lower sequential bits of data signal), be associated with each treatment element 144.1-144.N processing sequence Row order, etc..For example, the data signal in Fig. 1 can have N number of bit, each bit can be with specific processing unit 144.1-144.N is associated, and shuffle device 130 can shuffle passage 142.1-142.N to reconfigure place after shuffling every time Reason element 144.1-144.N is associated with different positions.

Alternatively, system 100 may include miscellaneous part, such as adder 150 to integrate or merge multiple channels.In Fig. 1 In, treatment element 144.1-144.N is depicted as DAC.However, other types for the treatment of element and configuration can be used for implementing Unlike signal processing function in system 100.For example, processor 140 may include multiple ADC as the processing elements in cascade configuration Part, each ADC treatment elements are output to the input of next ADC treatment elements.Treatment element 144.1-144.N may include sampling with Holding circuit, ADC, DAC or filter.

Controller 120 can control shuffle device 130 using it is determined that the signal 112 amplitude in first time period as first threshold Between Second Threshold after first frequency shuffled, and it is determined that the 3rd the period signal 112 amplitude be more than or Shuffled equal to after Second Threshold with second frequency.The first threshold is smaller than Second Threshold.First frequency is smaller than Second frequency.Shuffle device 130 can be shuffled with first or second frequency so that treatment element 144.1-144.N it is at least one First or each clock cycle of second frequency occupy diverse location in the signal processing path in processor 140.In addition, control Device 120 processed can control the frequency the shuffled change proportional to the amplitude of signal.

Controller 120 can control the shuffle device 130, have from relatively low frequency of shuffling to the higher switching for shuffling frequency Than when from it is higher shuffle frequency to it is relatively low shuffle frequency when less delay.That is, shuffle device 130 can be in system 100 Detect that the increase of signal amplitude shuffles frequency from the relatively low frequency error factor that shuffles in short period to higher afterwards, and in system 100 detect that the reduction of signal amplitude shuffles frequency from the higher frequency error factor that shuffles between longer-term to relatively low afterwards.This can be with It is referred to as " fast-attack slow-decay " activity control, and this can be provided between longer-term and keeps higher and shuffle frequency, and The excessively frequent switching of prevention system 100 shuffles the advantage of frequency.System 100 can include memory or buffer or timer with Time of measuring is used for the period for detecting the above.

The example time domain behavior of " fast-attack slow-decay " activity control is shown in Figure 3.When the amplitude detected is less than During certain threshold value TH1, shuffle device 130 can be closed.When amplitude exceedes threshold level TH1 and is less than threshold level TH2, Shuffle device 130 can be for example, by shuffling and shuffle process element every 2 clock cycle.When amplitude exceedes higher thresholds level During TH2, the rate of shuffling can increase more, and this can cause to shuffle speed faster, such as every 1 clock cycle.

When signal amplitude declines, shuffle device speed sustainable a period of time is (for example, what timer 1 and timer 2 determined Period), and then reduce.The fast-attack of controller 120 and slow-decay behavior can be favourable, to keep signal Low distortion performance, its signal amplitude can occur at longer time cycle (such as two-tone signal of tight spacing) between level Change.

Other threshold values and frequency can be implemented.When system 100 is in process signal, first and second threshold value, First, second, and third period, and first and second frequency can be adjusted or dynamic adjusts.First and second Frequency can be randomized by controller 120 in frequency range, and can be adjusted to avoid causing making an uproar in system 100 The specific frequency of sound.Frequency can be carried out at random by the random fundamental frequency specified of counting to that is added or is multiplied.

Generally, when the amplitude of the signal for processing is relatively low, distortion caused by element error hiding is exporting not Substantially, so as to which shuffle process element can will not reduce too many distortion, but the noise that itself can increase in signal processing system is shuffled. Therefore, reduced when signal has lower-magnitude and shuffle frequency or close that to shuffle be favourable.

The amplitude of signal 112 can be determined or be calculated by overall signal amplitude of the detector 110 based on signal 112, or Person can be determined according to the amplitude of the selective scope in signal 112 or frequency band or frequency individual.The amplitude of signal 112 can To be calculated by its instantaneous value or root root mean square (RMS) value.It is specific to compensate that this can allow system 100 to be finely adjusted Distortion.

In addition, controller 120 can determine amount distortion and the performance of monitoring system 100 by measuring output, and dynamically Adjustment or calibration above-mentioned parameter are used to be detected and be shuffled.For example, controller 120 can record over shuffle mode or processing Position of components, and further shuffle mode can be randomized and/or calibrate, to balance due to the distortion of element error hiding.

System 100 can be configured as a part for ADC system or Δ Σ ADC systems.

System 100 in Fig. 1 is shown in which the direct detection signal 112 of detector 110 to determine the amplitude of signal 112 Possible configuration.

Fig. 2 shown wherein after input signal 214 is converted to digital form by ADC264.1-264.N, detector The configuration of the alternative embodiment of 210 indirect detection input signals 214, the signal can be shuffled by shuffle device 230.This Kind configuration permission system 200 shuffles ADC264.1-264.N, and thereby further reduces in modulus signal conversion by error hiding Caused any distortion.In the configuration, ADC264.1-264.N and DAC244.1-244.N each pair can be considered as each Processing unit.However, ADC and DAC also can be separated by increasing another shuffle device between ADC and DAC.

In system 200, shuffle device 230 can receive multiple reference voltages 212 and shuffle the processing elements in processor 240 The channel 242.1-242.N of the input of part.Similar with system 100, controller 220 can be according to the letter detected by detector 210 Number amplitude control shuffle device 230.Reference voltage 212 is directed into ADC264.1-264.N input, is used as referring to production The digital form of raw input signal 214, the input signal 214 can be analog form.Pass through such structure, shuffle device 230 To reduce as the distortion caused by element error hiding, while it can be reduced with the treatment element in print shuffle processor 240 by shuffling Caused by noise.Alternatively, adder 250 can be included to merge signal.The treatment element may include sampling with keeping electricity Road, ADC, DAC or filter.

According to Fig. 4 it is of the invention it is exemplary apply example, method 400 may include block 410, and letter is detected by detector 110 Numbers 112.

In block 420, controller 120 can be based on the signal 112 control shuffle device 130.

In block 430, shuffle device 130 can multiple treatment element 144.1-144.N based on the print shuffle processor 140 of signal 112 Input multiple channel 142.1-142.N.

In multiple channel 142.1-142.N process signals 112 that block 440, processor 140 can configure according to shuffle device 130.

The shuffle device 130 can be based on signal 112 amplitude or frequency shuffle multiple treatment elements in processor 140 144.1-144.N multiple channel 142.1-142.N so that after shuffling every time, at least the one for the treatment of element 144.1-144.N The individual diverse location relative in the signal processing path that processor 140 is occupied before shuffling.Controller 120 can control shuffle device 130 with it is determined that the signal 112 amplitude be more than or equal to first threshold after start to shuffle.Controller 120 is controllable to be shuffled Device 130 it is determined that the signal 112 amplitude the first period be more than or equal to first threshold after start to shuffle, and it is determined that The amplitude of signal 112 is closed and shuffled after being less than first threshold in the second period.

It is appreciated that the invention is not limited in described embodiment, and can solve conflict situations wherein be present Any amount of scene and embodiment.

Although the disclosure is described with reference to multiple exemplary embodiments, it is to be understood that, the word used It is the purpose of words of description and explanation, rather than restricted word.In the case of without departing substantially from the scope of the present disclosure and spirit, Change can be carried out within the scope of the appended claims, as stated at present and revising ground.Although the disclosure is by reference to spy Fixed device, material and embodiment is described, and the disclosure is not intended to be limited to disclosed details；And present invention extension To all functionally equivalent structure, method and purposes, such as within the scope of the appended claims.

Although the computer-readable medium can be described as single medium, term " computer-readable medium " bag Include single medium or multiple media, such as centralized or distributed database, and/or the correlation of the one or more instruction set of storage The caching and server of connection.Term " computer-readable medium " should also include storing, encode or carrying instruction set Any medium, the instruction set is by computing device or computer system is performed any one or more implementations disclosed herein Example.

The computer-readable medium can include non-transitory computer-readable medium or media and/or including provisional Computer-readable medium or media.In specific non-restrictive illustrative embodiment, the computer-readable medium may include Solid-state memory, such as accommodate the storage card of one or more non-volatile read-only storages or other packagings.In addition, computer Computer-readable recording medium can be random access memory or other volatibility recordable memorys.In addition, computer-readable medium can be with Including magneto-optic or optical medium, such as disk or tape or other storage devices are to capture carrier signal, such as transport through The signal of defeated medium.Therefore, the present invention is believed to comprise any computer-readable medium or other equivalents and subsequent medium, its In, data or instruction can be stored.

Although This application describes the specific embodiment that can be embodied as code segment on a computer-readable medium, but it should reason Solution：Special hardware realizes that (such as, application specific integrated circuit, programmable logic array and other hardware devices) can be configured to realize One or more embodiments as described herein.The application program that various embodiments described in this paper can be included can be widely Including various electronics and computer system.Therefore, the application can include software, firmware and hardware implementation mode, or they Combination.

The component that this specification can be realized in a particular embodiment with reference to specific standard and agreement description, but the present invention is simultaneously It is not limited to these standards and agreement.These standards by with substantially the same function faster or the more efficient equivalent cycle Substitute to property.Therefore, the replacement standard with same or similar function and agreement are considered as its equivalent.

The explanation of embodiment described herein aims to provide the general understanding to various embodiments.This explanation is not intended to As and using structure described herein or method all elements of device and the complete description of feature.Once browse this public affairs Open, many other embodiments can be apparent for those skilled in the art.Other embodiment can be utilized, and be derived from Present disclosure so that structure can be carried out without departing from the spirit and scope of the invention and logic is replaced and changed.In addition, The diagram is only representational, and can be not drawn to scale.Some ratios in accompanying drawing can be exaggerated, and other ratios can It is minimized.Therefore, present disclosure and accompanying drawing should be considered as illustrative and not restrictive.

One or more embodiments of the present invention can individually and/or collectively referenced as term " disclosure " be only herein It is that for convenience, and non-active limitation scope of the present application is to any specific disclosure or idea of the invention.In addition, although tool Body embodiment has been illustrated and described, it is to be understood that, it is designed to realize that any then arrange of same or like purpose can Specific embodiment shown in substituting.Present disclosure is intended to any and all follow-up modification or the change of various embodiments Body.Once browsing this description, the combination of above-described embodiment and this paper other embodiments not specifically describeds are for this area skill Art personnel will be apparent.

In addition, in detailed description above, in order to simplify the purpose of the disclosure, various features can combine or Person is described in single embodiment.The embodiment that the present invention is not construed as reflection request needs to want compared with each right What is be expressly recited in asking is more multi-functional.On the contrary, as the following claims reflect, subject matter can be directed to and be less than any institute All features of open embodiment.Therefore, following claim is incorporated into detailed description, itself conduct of each claim Individually limit claimed theme.

Theme disclosed above is considered as illustrative and not restrictive, and appended claims are intended to cover All such modifications, enhancing and the other embodiments fallen into true spirit and scope of the present invention.Therefore, for law The maximum magnitude of permission, protection scope of the present invention are allowed to explain Lai really by appended claims and its most wide of equivalent It is fixed, and should not be limited or limited by detailed description before.

Claims (20)

1. a kind of signal processing system, including：

Detector, detection signal；

Controller, shuffle device is controlled based on the signal to switch in different shuffle between frequency；

Shuffle device, multiple channels in the input of multiple treatment elements of processor are shuffled based on the signal；With

Processor signal according to multiple Channel Processings that the shuffle device configures,

Wherein, amplitude or frequency of the shuffle device based on signal shuffle multiple letters in the input of the multiple treatment element Road so that after shuffling every time, at least one signal that processor is occupied compared with before shuffling in the treatment element Diverse location in processing path.

2. system according to claim 1, wherein, the controller controls the shuffle device with it is determined that the width of the signal Degree starts to shuffle after being more than or equal to first threshold.

3. system according to claim 1, wherein, the controller controls the shuffle device with it is determined that the signal Amplitude is shuffled frequency or closed and shuffles less than reduction after first threshold.

4. system according to claim 1, wherein, it is determined that the amplitude of the signal be more than or equal to first threshold it Afterwards, the controller control shuffle device starts to shuffle shuffles the treatment element one with each cycle in first frequency It is secondary.

5. system according to claim 1, wherein, the controller controls the shuffle device with it is determined that the width of the signal Degree is shuffled after first time period is between first threshold and Second Threshold with first frequency, and it is determined that the width of the signal Degree is more than or equal in the 3rd period after Second Threshold to be shuffled with second frequency.

6. system according to claim 1, wherein, the controller controls the shuffle device to be shuffled with first frequency, institute The amplitude for stating first frequency and signal proportionally changes.

7. system according to claim 1, wherein, it is determined that the amplitude of the signal is less than first threshold in a period of time Afterwards, the controller controls the shuffle device and shuffled with reducing to shuffle frequency or close.

8. system according to claim 1, wherein, signal of the detector detection indirectly from the processor.

9. system according to claim 1, wherein, the controller randomization shuffle device shuffles frequency.

10. system according to claim 1, wherein, the multiple treatment element include sampling and holding circuit, ADC, DAC or filter.

11. a kind of signal processing method, including：

Pass through detector detection signal；

Shuffle device is controlled to switch in different shuffle between frequency based on the signal by controller；

Multiple channels in the input of multiple treatment elements of processor are shuffled based on the signal by shuffle device；With

As the processor according to the multiple Channel Processing configured as shuffle device signal,

Amplitude or frequency of the wherein described shuffle device based on signal shuffle the multiple treatment element input it is described more Individual channel so that after shuffling every time, at least one in the treatment element occupies processor compared with before shuffling Diverse location in signal processing path.

12. according to the method for claim 11, wherein, it is determined that the signal amplitude be more than or equal to first threshold it Afterwards, the controller controls the shuffle device to start to shuffle.

13. according to the method for claim 11, wherein, it is determined that the signal amplitude be less than first threshold after, institute State the controller control shuffle device and shuffled with reducing to shuffle frequency or close.

14. according to method as claimed in claim 11, wherein, it is determined that the amplitude of the signal is more than or equal to first threshold Afterwards, the controller control shuffle device starts to shuffle shuffles the treatment element one with each cycle in first frequency It is secondary.

15. according to the method for claim 11, wherein, the controller controls the shuffle device with it is determined that the signal Amplitude shuffled with first frequency after first time period is between first threshold and Second Threshold, and it is determined that the signal Amplitude is more than or equal in the 3rd period after Second Threshold is shuffled with second frequency.

16. according to the method for claim 11, wherein, the controller controls the shuffle device to be shuffled with first frequency, The amplitude of the first frequency and signal proportionally changes.

17. the method according to claim 11, wherein, it is determined that the amplitude of the signal is less than the first threshold in a period of time After value, the controller controls the shuffle device and shuffled with reducing to shuffle frequency or close.

18. according to the method for claim 11, wherein, the detector detects the signal indirectly from the processor.

19. according to the method for claim 11, wherein the controller randomization shuffle device shuffles frequency.

20. according to the method for claim 11, wherein the multiple treatment element include sampling and holding circuit, ADC, DAC or filter.