CN102098043B

CN102098043B - Device and method for judging locking through time error detection

Info

Publication number: CN102098043B
Application number: CN 200910260519
Authority: CN
Inventors: 黄共镳
Original assignee: Novatek Microelectronics Corp
Current assignee: Novatek Microelectronics Corp
Priority date: 2009-12-11
Filing date: 2009-12-11
Publication date: 2013-03-27
Anticipated expiration: 2029-12-11
Also published as: CN102098043A

Abstract

The invention provides a device and method for judging locking through time error detection. The method comprises the following steps: acquiring a plurality of verification values from a transfer signal; obtaining a total movement average signal in accordance with the verification values; and sampling the total movement average signal at set intervals to obtain a plurality of sampling values, and judging whether the transfer signal is in a timing sequence lock state or a non-timing sequence lock state based on a relative size relationship among the sampling values.

Description

Thing error detection is judged locking device and method

Technical field

The relevant a kind of thing error detection of the present invention is judged locking device and method, and particularly relevant a kind of reliable thing error detection is judged locking device and method.

Background technology

Please refer to Fig. 1, it illustrates the calcspar that traditional thing error detection is judged locking device.Traditional thing error detection judges that locking device 100 comprises locking wave detector 110, an averaging unit 120 and a judging unit 130.Locking wave detector 110 transmits signal from one and obtains a plurality of certified values.Averaging unit 120 receives a plurality of certified values, and every N certified value does once average and obtain a plurality of mean values, for example do average to certified value d1～d4 and obtain mean value a1, to certified value d5～d8 do on average obtain mean value a2 ... Deng.

Judging unit 130 can judge that whether averaging unit 120 resulting a plurality of mean values are all greater than a calibrating critical value.Please refer to Fig. 2, it illustrates the schematic diagram of traditional judgement locking.In Fig. 2, when mean value during all greater than calibrating critical value LTH, judging unit 130 can judge that transmitting signals be sequential lock-out states.Yet the output of averaging unit 120 is subject to external influences such as noise, frequency shift (FS) or adjacency channel easily, causes judging unit 130 to produce erroneous judgement.In addition, if calibrating critical value LTH sets too lowly, then not yet for may being judged unit 130, the transmission signal of sequential lock-out state is mistaken for the sequential lock-out state; Otherwise, if calibrating critical value LTH sets too highly, then be the sequential lock-out state for the transmission signal of sequential lock-out state then can't judge rightly always.Hereat, corresponding different situations, judging unit 130 must be set different calibrating critical value LTH and can't adopt fixing calibrating critical value LTH to process all situations.

Summary of the invention

The purpose of this invention is to provide a kind of thing error detection and judge locking device and method, by judging the alteration trend of Moving sum mean value, to determine transmitting signal as sequential lock-out state or non-sequential lock-out state.

According to a first aspect of the invention, propose a kind of thing error detection and judge locking device, comprise a locking wave detector, a Moving sum average value calculator and a judgement indicating device.The locking wave detector transmits signal from one and obtains a plurality of certified values.The Moving sum average value calculator obtains a Moving sum average signal according to these certified values.Judge indicating device every one fixedly the period Moving sum average signal is taken a sample and obtains a plurality of sampling values, and concern to judge that according to the relative size between these sampling values the transmission signal is sequential lock-out state or non-sequential lock-out state.

According to a second aspect of the invention, propose a kind of thing error detection and judge locking means, comprise the following steps.Transmit signal from one and obtain a plurality of certified values.Obtain a Moving sum average signal according to these certified values.Every one fixedly the period Moving sum average signal is taken a sample and obtains a plurality of sampling values, and concern to judge that according to the relative size between these sampling values transmitting signal is sequential lock-out state or non-sequential lock-out state.

For foregoing of the present invention can be become apparent, below in conjunction with accompanying drawing preferred embodiment of the present invention is elaborated, wherein:

Description of drawings

Fig. 1 illustrates the calcspar that traditional thing error detection is judged locking device.

Fig. 2 illustrates the schematic diagram of traditional judgement locking.

Fig. 3 illustrates the calcspar of judging locking device according to the thing error detection of preferred embodiment of the present invention.

Fig. 4 illustrates the calcspar according to an example of the Moving sum average value calculator of preferred embodiment of the present invention.

Fig. 5 illustrates the oscillogram according to the Moving sum average signal of preferred embodiment of the present invention.

Fig. 6 illustrates the state diagram of judging locking according to the thing error detection of preferred embodiment of the present invention.

Fig. 7 illustrates the calcspar according to an example of the judgement indicating device of preferred embodiment of the present invention.

Fig. 8 illustrates the calcspar according to an example of the trend indicator of preferred embodiment of the present invention.

Fig. 9 illustrates the calcspar according to an example of the coefficient determining means of preferred embodiment of the present invention.

Embodiment

The present invention proposes a kind of thing error detection and judges locking device and method, and the alteration trend of the Moving sum mean value by judging the certified value that transmits signal is sequential lock-out state or non-sequential lock-out state so can effectively determine to transmit signal.

Please refer to Fig. 3, it illustrates the calcspar of judging locking device according to the thing error detection of preferred embodiment of the present invention.Thing error detection judges that locking device 300 comprises locking wave detector (lock detector) 310, one a Moving sum average value calculator (moving sum mean calculator) 320 and one judgement indicating device (decisionindicator) 330.Locking wave detector 310 is obtained a plurality of certified values in order to transmit signal from one.Moving sum average value calculator 320 obtains a Moving sum average signal according to a plurality of certified values.

Please refer to Fig. 4, it illustrates the calcspar according to an example of the Moving sum average value calculator of preferred embodiment of the present invention.Moving sum average value calculator 320 comprises N delay line (delay line) 321, one multiplexer 322, an adder 324, a delayer 326 and a divider 328.Can be learnt that by Fig. 4 Moving sum average value calculator 320 receives a plurality of certified values, and it is average and obtain a plurality of Moving sum mean values that a plurality of certified values are done Moving sum.Now suppose certified value to be d1～d (2N) be example, a plurality of Moving sum mean values be sequentially d1/N, (d1+d2)/N, (d1+d2+d3)/N ..., (d1+ ... + d (N-1))/N, (d1+ ... + dN)/N, (d2+ ... + d (N+1))/N, (d3+ ... + d (N+2))/N ..., (d (2N-1)+... + d (2N))/N.These a plurality of Moving sum mean values are moved sum-total average calculator 320 and are output as a Moving sum average signal, and as shown in Figure 5, it illustrates the oscillogram according to the Moving sum average signal of preferred embodiment of the present invention.

Judge indicating device 330 every one fixedly the period Moving sum average signal is taken a sample and obtains a plurality of sampling values, and concern to judge that according to the relative size between a plurality of sampling values the transmission signal is sequential lock-out state or non-sequential lock-out state.In Fig. 5, can observe obtaining, judge indicating device 330 every one fixedly the period (T1, T2 ..., T7 ...) to the Moving sum average signal take a sample and obtain a plurality of sampling values (P1, P2 ..., P7 ...).Because the characteristic of Moving sum average computation device 320, if transmitting signal is the sequential lock-out state, then the Moving sum average signal can tend towards stability, and its value is (as P3～P7) meeting narrow width of cloth in a higher limit UB and a lower limit LB vibrates and do not have excessive variation.Hereat, judge that indicating device 330 can calculate the in twos ratio of adjacent sampling value, and judge according to this alteration trend of Moving sum average signal.Stablize when the alteration trend of Moving sum average signal, judgement indicating device 330 can judge that namely transmitting signal is the sequential lock-out state.

Judge that indicating device 330 comprises in fact a state machine.Please refer to Fig. 6, it illustrates the state diagram of judging locking according to the thing error detection of preferred embodiment of the present invention.In Fig. 6, be that the ratio R that defines adjacent in twos sampling value is that a current sampling value is divided by a previous sampling value.Initial condition is nought state S0.Now cooperate Fig. 5 to explain.In Fig. 5, much larger than 1 (or greater than one first default value, for example being 50), then state machine switches to the first state S1 by nought state S0 to sampling point P2 to the ratio R of sampling point P1.Sampling point P3 to the ratio R of sampling point P2 greater than 1 but be not similar to 1 and less than the first default value, then state machine is maintained at the first state S1.

Less than 1 and be similar to 1, state machine switches to one second state S2 by the first state S1 to sampling point P4 to the ratio R of sampling point P3.Sampling point P5 is similar to 1 to the ratio R of sampling point P4, and state machine is maintained at the second state S2.And a count value (count) adds 1.When continuous (m-1) individual period state machine all is maintained at the second state, then count value (count) is added to (m-2), then state machine can switch to a third state S3 by the second state S2, judges that transmitting signal is the sequential lock-out state so that judge indicating device 330.Wherein m is one second default value, and the size of the first default value and the second default value is looked closely user's demand and decided, and does not limit.

Please refer to Fig. 7, it illustrates the calcspar according to an example of the judgement indicating device of preferred embodiment of the present invention.Judge that indicating device 330 comprises a delayer 331, a proportion calculator 332, a state machine 334, a coefficient determining means 336 and a trend indicator 338.Delayer 331 is coupled to Moving sum average value calculator 320.Proportion calculator 332 is coupled to Moving sum average value calculator 320 and delayer 331, in order to obtain the ratio R of adjacent in twos sampling value.State machine 334 is in order to switch to one of nought state S0～third state S3.Coefficient determining means 336 is controlled by state machine 334 with a plurality of coefficient C1～C4s of output corresponding to the state of state machine 334.Trend indicator 338 is coupled to proportion calculator 332 and is controlled by state machine 334, in order to foundation ratio R and coefficient C1～C4 with state of a control machine 334 switching states.

Please refer to Fig. 8 and Fig. 9, Fig. 8 illustrates the calcspar according to an example of the trend indicator of preferred embodiment of the present invention, and Fig. 9 illustrates the calcspar according to an example of the coefficient determining means of preferred embodiment of the present invention.In Fig. 8, be take the first default value as 50, and ratio R approximate 1 o'clock was between 0.9～1.1 for example explains, yet is not limited to this.Coefficient determining means 336 is utilized a plurality of multiplexers 340～344, decides the value of the coefficient C1～C4 of output according to the output STAT of state machine 334.In trend indicator 338, the size of

comparator

352 and 354 coefficient of comparisons C1～C4, whether multiplexer 356 is according to the output STAT of state machine 334 and the comparative result of

comparator

352 and 354, switch or keep state with state of a control machine 334.

The present invention also discloses a kind of thing error detection and judges locking means, comprises the following steps.Transmit signal from one and obtain a plurality of certified values.Obtain a Moving sum average signal according to these certified values.Every one fixedly the period Moving sum average signal is taken a sample and obtains a plurality of sampling values, and concern to judge that according to the relative size between these sampling values transmitting signal is sequential lock-out state or non-sequential lock-out state.

Above-mentioned thing error detection judges that the principle of locking means has been specified in thing error detection and has judged among locking 300 and Fig. 3～Fig. 9, so no longer repeat in this.

The disclosed thing error detection of the above embodiment of the present invention is judged locking device and method, has multiple advantages, below only enumerates the part advantage and is described as follows:

Thing error detection of the present invention is judged locking device and method, produce a Moving sum average signal by the Moving sum mean value that calculates the certified value that transmits signal, and whether the alteration trend of judging the Moving sum average signal is stable, when the alteration trend of Moving sum average signal meets criterion, can determine to transmit signal is the sequential lock-out state, otherwise, then be the non-sequential lock-out state.Thus, do not need when various situation, to reset the state that applicable calibrating critical value can determine to transmit signal effectively, improved the reliability of thing error detection judgement locking in the total system.

In sum, although the present invention with preferred embodiment exposure as above, yet it is not to limit the present invention.The persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when making the various changes that are equal to or replacement.Therefore, protection scope of the present invention is when looking accompanying being as the criterion that the application's claim scope defines.

Claims

1. a thing error detection is judged locking device, comprising:

One locking wave detector is obtained a plurality of certified values in order to transmit signal from one;

One Moving sum average value calculator is in order to obtain a Moving sum average signal according to these certified values; And

One judges indicating device, in order to every one fixedly the period this Moving sum average signal is taken a sample and obtains a plurality of sampling values, and concern to judge that according to the relative size between these sampling values this transmission signal is sequential lock-out state or non-sequential lock-out state.

2. thing error detection according to claim 1 is judged locking device, it is characterized in that, this judges that indicating device is also in order to calculate the in twos ratio of adjacent sampling value, and judge according to this alteration trend of this Moving sum average signal, stablize when the alteration trend of this Moving sum average signal, this judgement indicating device judges that this transmission signal is the sequential lock-out state.

3. thing error detection according to claim 1 is judged locking device, it is characterized in that, this judgement indicating device comprises a state machine, and the definition in twos the ratio of adjacent sampling value be to be obtained divided by a previous sampling value by a current sampling value, when a n ratio greater than one first default value, this state machine switches to one first state by a nought state, when one (n+1) ratio less than 1 and be similar to 1, this state machine switches to one second state by this first state, when one (n+2) ratio～one (n+m) ratio all is similar to 1, this state machine switches to a third state by this second state, so that this judgement indicating device judges that this transmission signal is the sequential lock-out state, wherein m is one second default value, and n and m are positive integer.

4. thing error detection according to claim 3 is judged locking device, it is characterized in that this judgement indicating device comprises:

One delayer is coupled to this Moving sum average value calculator;

One proportion calculator is coupled to this Moving sum average value calculator and this delayer, in order to obtain the ratio of adjacent in twos sampling value;

One state machine is in order to switch to one of this nought state～this third state;

One coefficient determining means is controlled by this state machine with a plurality of coefficients of output corresponding to the state of this state machine; And

One trend indicator is coupled to this proportion calculator and is controlled by this state machine, in order to according to these ratios and these coefficients to control this state machine switching state.

5. a thing error detection is judged locking means, comprising:

Transmit signal from one and obtain a plurality of certified values;

Obtain a Moving sum average signal according to these certified values; And

Every one fixedly the period this Moving sum average signal is taken a sample and obtains a plurality of sampling values, and concern to judge that according to the relative size between these sampling values this transmission signal is sequential lock-out state or non-sequential lock-out state.

6. thing error detection according to claim 5 is judged locking means, it is characterized in that, also comprises:

Calculate the in twos ratio of adjacent sampling value, and judge according to this alteration trend of this Moving sum average signal; And

When the alteration trend of this Moving sum average signal is stable, judge that this transmission signal is the sequential lock-out state.

7. thing error detection according to claim 5 is judged locking means, it is characterized in that, also comprises:

The definition in twos ratio of adjacent sampling value is to be obtained divided by a previous sampling value by a current sampling value;

When a n ratio greater than one first default value, switching a nought state is one first state, n is positive integer;

When one (n+1) ratio less than 1 and be similar to 1, switching this first state is one second state; And

When one (n+2) ratio～one (n+m) ratio all is similar to 1, switching this second state is a third state, and judges that this transmission signal is the sequential lock-out state, and wherein m is one second default value, and m is positive integer.