CN105978541B - A kind of method of achievable fast signal tracking - Google Patents
A kind of method of achievable fast signal tracking Download PDFInfo
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- CN105978541B CN105978541B CN201610275107.6A CN201610275107A CN105978541B CN 105978541 B CN105978541 B CN 105978541B CN 201610275107 A CN201610275107 A CN 201610275107A CN 105978541 B CN105978541 B CN 105978541B
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/19—Monitoring patterns of pulse trains
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K2005/00013—Delay, i.e. output pulse is delayed after input pulse and pulse length of output pulse is dependent on pulse length of input pulse
- H03K2005/00019—Variable delay
- H03K2005/00058—Variable delay controlled by a digital setting
Abstract
The present invention relates to a kind of methods of achievable fast signal tracking, and realize as follows: delay unit generates the postpones signal group being made of the road n postpones signal to the first signal SIGA delay process；Sampling unit picks out the road m signal from the first signal and postpones signal group and constitutes the first input signal group, in conjunction with second signal SIGB sampling processing, and generates the sampled signal group being made of the road m sampled signal；Decision unit picks out m way signal from postpones signal group, it is allowed to correspond with m way signal in sampled signal group, it is monitored according to state of the decision rule to each subsignal in sampled signal group, when sampled signal group neutron signal meets decision rule, 1 way signal is picked out from the sampled signal group subsignal for meeting decision rule as decision signal and triggers generation decision operation, the corresponding postpones signal group subsignal of decision signal as output signal SIGO and is maintained to judgement next time to occur, realizes the tracking to second signal SIGB.
Description
Technical field
The present invention relates to a kind of methods of achievable fast signal tracking.
Background technique
Signal trace is a kind of common signal of communication processing links, the signal tracking circuit in previous signal of communication processing
There is a problem of required tracking time length.In response to this problem, this patent proposes a kind of method of achievable fast signal tracking
And circuit.
Summary of the invention
The purpose of the present invention is to provide a kind of methods of achievable fast signal tracking, are existed in the prior art with overcoming
Defect.To achieve the above object, the technical scheme is that a kind of method of achievable fast signal tracking, comprising: one
Delay cell, a sampling unit and a decision unit are realized in accordance with the following steps:
Step S1: the delay unit carries out delay process to the first signal SIGA, generates postpones signal group, the delay
Signal group is made of the n way signal of DL1 to DLn, and the first signal SIGA and the postpones signal group are input to
The sampling unit, wherein n is the integer not less than 1；
Step S2: the sampling unit will pick out the road m letter from the first signal SIGA and the postpones signal group
Number the first input signal group is constituted, in conjunction with the first input signal group and the second signal SIGB, carries out sampling processing, and
Sampled signal group is generated, the sampled signal group is made of the m way signal of SP1 to SPm, wherein m is just whole no more than n
Number；
Step S3: the decision unit receives the postpones signal group and the sampled signal group respectively, and from described
M way signal is picked out in postpones signal group, is allowed to correspond with m way signal SP1 to SPm in the sampled signal group；
Step S4: the decision unit is supervised according to state of the decision rule to each subsignal in the sampled signal group
It surveys, it, will be sub from the sampled signal group for meeting decision rule when the sampled signal group neutron signal meets decision rule
1 way signal is picked out in signal as decision signal and triggers generation decision operation, according to step S3 determine corresponding relationship,
Postpones signal group subsignal corresponding to the decision signal as output signal SIGO and is maintained to adjudicating next time
Occur.
In an embodiment of the present invention, in the step S1, the subsignal DL1 in the postpones signal group is to DLn phase
First retardation to the n-th retardation differed respectively for the first signal SIGA, and first retardation is prolonged to described n-th
Amount is incremented by order late.
In an embodiment of the present invention, in the step S2, the sampling unit using the second signal SIGB as
Sampling clock respectively samples each subsignal in the first input signal group, generates the sampled signal group.
In an embodiment of the present invention, in the step S4, the decision unit detects the sampled signal group respectively
In each subsignal voltage status, and when the sampled signal group subsignal voltage status described in the arbitrary neighborhood two-way is opposite, triggering
Generate decision operation.
In an embodiment of the present invention, when to the second signal SIGB rising edge tracking, then in the step S4 when
When the adjacent two-way sampled signal group subsignal voltage status is respectively high level and low level, triggering generates the criterion behaviour
Make.
In an embodiment of the present invention, in the step S2, the sampling unit will use first input signal
Each subsignal samples the second signal SIGB respectively as sampling clock in group, generates the sampled signal group.
In an embodiment of the present invention, in the step S4, the decision unit detects the sampled signal group respectively
In each subsignal voltage status, and when the sampled signal group subsignal voltage status described in the arbitrary neighborhood two-way is opposite, triggering
Generate decision operation.
In an embodiment of the present invention, when to the second signal SIGB rising edge tracking, then in the step S4 when
When adjacent two-way sampling group's subsignal voltage status is respectively low level and high level, triggering generates the criterion operation.
Compared to the prior art, the invention has the following advantages: quickly letter can be achieved in one kind proposed by the invention
The method of number tracking, can quickly generate output signal and realize tracking to second signal.
Detailed description of the invention
Fig. 1 is a kind of circuit of achievable fast signal tracking in the present invention.
Fig. 2 is that the unused second signal of sampling unit is adopted as sampling clock progress rising edge in an embodiment in the present invention
Each signal sequence when sample.
Fig. 3 is that sampling unit uses second signal to carry out rising edge sampling as sampling clock in an embodiment in the present invention
When each signal sequence.
Fig. 4 is that sampling unit uses second signal to adopt as sampling clock progress rising edge in another embodiment in the present invention
Each signal sequence when sample.
Specific embodiment
With reference to the accompanying drawing, technical solution of the present invention is specifically described.
The circuit of achievable fast signal tracking in the present invention is made of delay cell, sampling unit, decision unit,
Structure is as shown in Figure 1.
Further, delay cell carries out delay disposal to input clock signal SIGA, generates the road n postpones signal < DL1:
DLn > composition time delayed signal group, wherein n is not less than 1；First signal SIGA, the road second signal SIGB and n postpones signal group is defeated
Enter to sampling unit, sampling unit picks out the road m signal from the first signal SIGA and postpones signal group and constitutes the first input letter
Number group completes sampling processing in conjunction with second signal SIGB, and produces the sampled signal of the road m sampled signal<SP1:SPm>composition
Group, wherein m no more than n but is greater than 0；Sampled signal group is input to decision unit, decision unit is selected from postpones signal group
M way signal out is allowed to correspond with m way signal SP1 to SPm in the sampled signal group, and according to sampled signal group
Neutron signal<SP1:SPm>state selects 1 tunnel postpones signal group subsignal as output signal SIGO.
Further, in the present embodiment, the mode of selecting of subsignal is any selection or is selected by preset rules
It selects.
Further, in the present embodiment, enable n take 5 namely delay cell produce 5 tunnel postpones signals, wherein it is each
Road signal has different retardations relative to the first signal SIGA,<DL1:DL5>is named as, preferably, its retardation is gradually
It is incremented by, as shown in Figure 2,3.
Further, in the present embodiment, 5 tunnel postpones signals are picked out to form the first input signal by sample circuit
Group, and can choose two kinds of working methods:
(1) first way is that the 5 road signals that will be singled out rise second signal SIGB as sampling clock
5 tunnel sampled signals are generated along sampling, are ordered as<SP1:SP5>, process is as shown in Fig. 2；
(2) second way is to rise using second signal SIGB as sampling clock to select 5 road signal
5 tunnel sampled signals are generated along sampling, are ordered as<SP1:SP5>, process is as shown in Fig. 3.
Further, in the present embodiment, decision unit makes decisions processing according to sampled signal<SP1:SP5>, when sentencing
When certainly the voltage status of arbitrary neighborhood two-way sampled signal is opposite in unit discovery<SP1:SP5>, then generation decision operation is triggered；
Decision unit selects sampled signal all the way from the different adjacent two-way sampled signals of voltage status, will be with the road as criterion signal
The corresponding postpones signal of the sampled signal keeps this mapping relations as output signal SIGO, until next time
Decision process occurs.
Further, in the present embodiment, it if desired realizes to the rising edge tracking of second signal SIGB and sampling unit
Using each subsignal in the first input signal group as sampling clock, then when adjacent two-way sampled signal voltage status is not low level
When with high level, triggering generates criterion operation.If desired it realizes to the rising edge tracking of second signal SIGB and sampling unit is incited somebody to action
Second signal SIGB is as sampling clock, then when adjacent two-way sampled signal voltage status is not high level and low level, touching
Hair generates criterion operation.
Further, in the present embodiment, it if desired realizes and the rising edge of second signal SIGB is tracked and sampling unit
Rising edge sampling is done to second signal SIGB as sampling clock using the 5 road signals picked out, and generates sampled signal < SP1:
SP5>, and<SP1:SP5>and<DL1:DL5>is corresponded；It is assumed that adjacent two-way sampled signal SP3 and SP4 voltage status phase
Instead, wherein SP3 is low-voltage and SP4 is high voltage, then decision unit is using SP4 as decision signal, and corresponding with SP4 will prolong
Slow signal DL4 mapping generates output signal SIGO, and whole process is as shown in Figure 2.
Further, in the present embodiment, it if desired realizes and the rising edge of second signal SIGB is tracked and sampling unit
Rising edge sampling is done to the 5 road signals picked out as sampling clock using second signal SIGB, and generates sampled signal < SP1:
SP5>, and<SP1:SP5>and<DL1:DL5>is corresponded；It is assumed that adjacent two-way sampled signal SP3 and SP4 voltage status phase
Instead, wherein SP3 is high voltage and SP4 is low-voltage, then decision unit is using SP4 as decision signal, and corresponding with SP4 will prolong
Slow signal DL4 mapping generates output signal SIGO, and whole process is as shown in Figure 3.
Further, in another embodiment, sample circuit is by the first input signal SIGA and 4 tunnels postpones signal < SP1:
SP4 > pick out to form the first input signal group, and sampling unit using second signal SIGB as sampling clock to selecting
5 road signals out do rising edge sampling and generate sampled signal<SP1:SP5>；Decision unit is by<SP1:SP5>and<DL1:DL5>one
One is corresponding, and assume adjacent two-way sampled signal SP4 and SP5 voltage status on the contrary, wherein SP4 is high voltage and SP5 is low
Voltage, then decision unit is using SP5 as decision signal, and postpones signal DL5 mapping corresponding with SP5 is generated output signal
SIGO, whole process are as shown in Figure 4.
The above are preferred embodiments of the present invention, all any changes made according to the technical solution of the present invention, and generated function is made
When with range without departing from technical solution of the present invention, all belong to the scope of protection of the present invention.
Claims (8)
1. a kind of method of achievable fast signal tracking characterized by comprising a delay cell, a sampling unit and
One decision unit is realized in accordance with the following steps:
Step S1: the delay cell carries out delay process to the first signal SIGA, generates postpones signal group, the postpones signal
Group is made of the n way signal of DL1 to DLn, and the first signal SIGA and the postpones signal group is input to described
Sampling unit, wherein n is the integer not less than 1；
Step S2: the sampling unit will pick out the road m signal structure from the first signal SIGA and the postpones signal group
Sampling processing is carried out in conjunction with the first input signal group and second signal SIGB at the first input signal group, and generates sampling
Signal group, the sampled signal group are made of the m way signal of SP1 to SPm, wherein m is the positive integer no more than n；
Step S3: the decision unit receives the postpones signal group and the sampled signal group respectively, and from the delay
M way signal is picked out in signal group, is allowed to correspond with m way signal SP1 to SPm in the sampled signal group；
Step S4: the decision unit is monitored according to state of the decision rule to each subsignal in the sampled signal group,
It, will be from the sampled signal group subsignal for meeting decision rule when the sampled signal group neutron signal meets decision rule
In pick out 1 way signal as decision signal and trigger generation decision operation, according to the corresponding relationship that step S3 is determined, by institute
The postpones signal group subsignal corresponding to decision signal is stated as output signal SIGO and maintains to judgement next time to occur.
2. a kind of method of achievable fast signal tracking according to claim 1, which is characterized in that in the step S1
In, the subsignal DL1 to DLn in the postpones signal group differs the first retardation extremely relative to the first signal SIGA respectively
N-th retardation, and first retardation to n-th retardation is incremented by order.
3. a kind of method of achievable fast signal tracking according to claim 1, which is characterized in that in the step S2
In, the sampling unit is using the second signal SIGB as sampling clock, respectively to each son in the first input signal group
Signal is sampled, and the sampled signal group is generated.
4. a kind of method of achievable fast signal tracking according to claim 3, which is characterized in that in the step S4
In, the decision unit detects the voltage status of each subsignal in the sampled signal group respectively, and works as arbitrary neighborhood two-way institute
State sampled signal group subsignal voltage status it is opposite when, triggering generate decision operation.
5. a kind of method of achievable fast signal tracking according to claim 4, which is characterized in that when to described second
The rising edge of signal SIGB is tracked, then when the adjacent two-way sampled signal group subsignal voltage status is distinguished in the step S4
When for high level and low level, triggering generates the decision operation.
6. a kind of method of achievable fast signal tracking according to claim 1, which is characterized in that in the step S2
In, the sampling unit will be using each subsignal in the first input signal group respectively as sampling clock, to described second
Signal SIGB is sampled, and the sampled signal group is generated.
7. a kind of method of achievable fast signal tracking according to claim 6, which is characterized in that in the step S4
In, the decision unit detects the voltage status of each subsignal in the sampled signal group respectively, and works as arbitrary neighborhood two-way institute
State sampled signal group subsignal voltage status it is opposite when, triggering generate decision operation.
8. a kind of method of achievable fast signal tracking according to claim 7, which is characterized in that when to described second
The rising edge of signal SIGB is tracked, then when adjacent two-way sampling group's subsignal voltage status is respectively low in the step S4
When level and high level, triggering generates the decision operation.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773852A (en) * | 2004-11-12 | 2006-05-17 | 三洋电机株式会社 | Trap filter |
| CN101465632A (en) * | 2007-12-21 | 2009-06-24 | 瑞昱半导体股份有限公司 | Sampling circuit and sampling method |
| CN101997543A (en) * | 2010-11-30 | 2011-03-30 | 四川和芯微电子股份有限公司 | Frequency discriminator and method for realizing frequency discrimination |
| CN102870386A (en) * | 2012-06-21 | 2013-01-09 | 华为技术有限公司 | Decision feedback equalizer and receiver |
| CN105471787A (en) * | 2015-11-23 | 2016-04-06 | 硅谷数模半导体（北京）有限公司 | Signal sampling processing method and system thereof |
-
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- 2016-04-28 CN CN201610275107.6A patent/CN105978541B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773852A (en) * | 2004-11-12 | 2006-05-17 | 三洋电机株式会社 | Trap filter |
| CN101465632A (en) * | 2007-12-21 | 2009-06-24 | 瑞昱半导体股份有限公司 | Sampling circuit and sampling method |
| CN101997543A (en) * | 2010-11-30 | 2011-03-30 | 四川和芯微电子股份有限公司 | Frequency discriminator and method for realizing frequency discrimination |
| CN102870386A (en) * | 2012-06-21 | 2013-01-09 | 华为技术有限公司 | Decision feedback equalizer and receiver |
| CN105471787A (en) * | 2015-11-23 | 2016-04-06 | 硅谷数模半导体（北京）有限公司 | Signal sampling processing method and system thereof |
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