CN102480301B - Electricity-saving mechanism and the mechanism and the method thereof that prevent false wake-up of control circuit - Google Patents
Electricity-saving mechanism and the mechanism and the method thereof that prevent false wake-up of control circuit Download PDFInfo
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- CN102480301B CN102480301B CN201010565425.9A CN201010565425A CN102480301B CN 102480301 B CN102480301 B CN 102480301B CN 201010565425 A CN201010565425 A CN 201010565425A CN 102480301 B CN102480301 B CN 102480301B
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Abstract
The electricity-saving mechanism that the invention provides a kind of control circuit and the mechanism preventing false wake-up and method thereof, the control circuit of this support one electricity-saving mechanism, includes: a coffret is used for the specific control circuit with and carries out Signal transmissions; And a setup unit, be coupled to this coffret, be used for controlling this specific control circuit and be operated under this electricity-saving mechanism.
Description
Technical field
The electricity-saving mechanism that the present invention relates to a kind of control circuit and the mechanism preventing false wake-up and method thereof, an electricity-saving mechanism is arranged at the control circuit of another control circuit and prevents this control circuit by the mechanism of an echo false wake-up and method thereof by espespecially a kind of pressure.
Background technology
Due to the progress of networked physics layer technology, from initial 10M connection speed, develop 100M and 1000M connection speed, the connection speed of three kinds (10M, 100M, 1000M) is supported in the standard of IEEE (Institute of Electrical and Electronics Engineers, InstituteofElectricalandElectronicsEngineers) 802.32005 years versions.Before two different networked physics layers (EthernetPhysicalLayer) will connect, can through the flow process of an auto negotiation (Auto-negotiation, NWAY) to confirm the link information of both sides.The energy-conservation Ethernet of the IEEE802.3az that current new development goes out or high-effect Ethernet (EEE, EnergyEfficientEthernet) standardization program is drawn up, when making Ethernet be in idle mode (IdleMode), the effect of power saving can be reached by this standardization program.Connect both sides to need to confirm whether the other side has the ability of IEEE802.3azEEE by the above-mentioned flow process from being dynamically connected, but some link is the ability not supporting auto negotiation.
In a data transmission system, when one first application circuit is connected by a data transmission media with one second application circuit, be not the state being always all in mutual swap data between this first application circuit and this second application circuit.For example, within certain period, this first application circuit receives data from this second application circuit constantly and does not transmit any data to this second application circuit, or does not all transmit between this first application circuit and this second application circuit or receive any data.In order to save the power supply of this data transmission system, when an application circuit is not when transmitting or receive data, its transfer circuit corresponding respectively or a receiving circuit should maintain the pattern of a power saving.Furthermore, when the data volume that institute's tendency to develop is sent between this first application circuit and this second application circuit is little, this first application circuit and this second application circuit can also transmit by the mode of a comparatively power saving (that is compared with the data transmission rate of low frequency).But, because the electricity-saving mechanism of this first application circuit and the electricity-saving mechanism of this second application circuit might not be identical, but or one of them application circuit does not arrange so-called electricity-saving mechanism with this, therefore, when a wherein application circuit (such as this first application circuit) meets the condition of a power saving (not such as being in the state receiving data), this receiving circuit that just cannot set this first application circuit by a predetermined standardization program between this first application circuit and this second application circuit enters a low-power consumption mode.Moreover, when this receiving circuit of this first application circuit and this second application circuit is all in this low-power consumption mode (such as a park mode), if when this transfer circuit of this first application circuit is for waking up this receiving circuit of this second application circuit from this park mode, this transfer circuit of this first application circuit can send a triggering signal this receiving circuit to this second application circuit by this data transmission media, but this receiving circuit of this first application circuit is got back in the echo that may rebound when this triggering signal is sent to this receiving circuit of this second application circuit.Now, perhaps this receiving circuit being in the first application circuit of this park mode also can be waken up by this echo by mistake.This receiving circuit due to the first application circuit should continue to be maintained at this park mode, therefore when this receiving circuit of the first application circuit is waken up by this echo by mistake, the predetermined standard wake up procedure of this data transmission system will make a mistake, and then affects ensuing transfer of data.Therefore, the electricity-saving mechanism how one standard be set in the application circuit of a data transmission system to save the power supply of this data transmission system, and when an application circuit is waken up from a park mode can not other application circuit of false wake-up become this area have usually know the knowledgeable need the problem of solution badly.
Summary of the invention
Therefore, an object of the embodiment of the present invention control circuit that is to provide a kind of pressure one electricity-saving mechanism to be arranged at another control circuit with prevent this control circuit by the mechanism of an echo false wake-up and method thereof.
According to one first embodiment of the present invention, it is to provide a kind ofly supports an electricity-saving mechanism but does not have the control circuit of an Automatic Negotiation Mechanism, and this control circuit includes a coffret and a setup unit.This coffret is used for the specific control circuit with and carries out Signal transmissions.This setup unit is coupled to this coffret, is used for controlling this specific control circuit and is operated under this electricity-saving mechanism.
According to one second embodiment of the present invention, it is to provide a kind of control circuit being used for being connected to a specific control circuit, and this control circuit includes a receiving circuit and a Circuit tuning.This receiving circuit is used for reception one input signal.This Circuit tuning is coupled to this receiving circuit, when this control circuit and this specific control circuit all enter a low-power consumption mode, one input signal critical value of this receiving circuit is adjusted to one second critical value from one first critical value by this Circuit tuning, and a signal strength signal intensity of this input signal is when reaching this second critical value, this input signal is just considered as an effective input signal by this receiving circuit.
According to of the present invention 1 the 3rd embodiment, it is to provide a kind of control circuit being used for being connected to a specific control circuit, and this control circuit includes a filter circuit and a Circuit tuning.This filter circuit is used for carrying out filtering to the input signal received by this control circuit.This Circuit tuning is coupled to this filter circuit, for at this control circuit and this specific control circuit all for before entering a low-power consumption mode, one cut-off frequency of this filter circuit is adjusted to one second critical frequency from one first critical frequency, when wherein a signal frequency of this input signal reaches this second critical frequency, this input signal is just considered as an effective input signal by this control circuit.
According to of the present invention 1 the 4th embodiment, it is to provide a kind of control circuit, and this control circuit includes a receiving circuit, a circuit for checking input signals and an echo cancellation circuit coupling.This receiving circuit is used for reception one input signal.Whether this circuit for checking input signals is used for detecting this input signal is an effective input signal.This echo cancellation circuit is between this receiving circuit and this circuit for checking input signals, and be used for carrying out an echo cancellation process, wherein this echo cancellation circuit coupling is just sent to this circuit for checking input signals after this input signal is carried out this echo cancellation process.
According to of the present invention 1 the 5th embodiment, it is to provide a kind of control circuit, and this control circuit includes a receiving circuit and a decision circuitry.This receiving circuit is used for reception one input signal.This decision circuitry is coupled to this receiving circuit, be used for judging whether a signal frequency of this input signal reaches a preset frequency, wherein when this signal frequency does not reach this preset frequency, then this decision circuitry judges that this input signal is an effective input signal, and when this signal frequency reaches this preset frequency, then this decision circuitry judges that this input signal is an invalid input signal.
According to of the present invention 1 the 6th embodiment, it is to provide a kind of control method, and this control method includes the following step: a control circuit with a receiving circuit is connected to a specific control circuit; Utilize the reception of this receiving circuit from an input signal of this specific control circuit; And when this control circuit and this specific control circuit all enter a low-power consumption mode, one input signal critical value of this receiving circuit is adjusted to one second critical value from one first critical value, and when a signal strength signal intensity of this input signal reaches this second critical value, this input signal is just considered as an effective input signal by this receiving circuit.
According to of the present invention 1 the 7th embodiment, it is to provide a kind of control method, and this control method includes the following step: a control circuit is connected to a specific control circuit; A filter circuit is utilized to carry out filtering to this control circuit from the input signal received by this specific control circuit; And at this control circuit and this specific control circuit all for before entering a low-power consumption mode, one cut-off frequency of this filter circuit is adjusted to one second critical frequency from one first critical frequency, when wherein a signal frequency of this input signal reaches this second critical frequency, this input signal is just considered as an effective input signal by this control circuit.
According to of the present invention 1 the 8th embodiment, it is to provide a kind of control method, and this control method includes the following step: receive an input signal; Whether detect this input signal is an effective input signal; And whether just detect this input signal after utilizing an echo cancellation circuit coupling to carry out an echo cancellation process to this input signal be an effective input signal.
According to of the present invention 1 the 9th embodiment, it is to provide a kind of control method, and this control method includes the following step: receive an input signal; And judge whether a signal frequency of this input signal reaches a preset frequency, wherein when this signal frequency does not reach this preset frequency, then judge that this input signal is an effective input signal, and when this signal frequency reaches this preset frequency, then judge that this input signal is an invalid input signal.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the embodiment of a kind of data transmission system of the present invention.
Fig. 2 is a kind of schematic diagram preventing echo false wake-up to be in the embodiment of the first control circuit of low-power consumption mode of the present invention.
Fig. 3 is the schematic diagram of input signal critical value when different working modes of the receiving circuit of Fig. 2 of the present invention.
Fig. 4 is a kind of schematic diagram preventing this echo false wake-up to be in another embodiment of this first control circuit of this low-power consumption mode of the present invention.
Fig. 5 is the frequency gain graph of a relation of cut-off frequency when different working modes of the filter circuit of Fig. 4 of the present invention.
Fig. 6 is a kind of schematic diagram preventing this echo false wake-up to be in another embodiment of this first control circuit of this low-power consumption mode of the present invention.
Fig. 7 is a kind of schematic diagram preventing this echo false wake-up to be in another embodiment of this first control circuit of this low-power consumption mode of the present invention.
Main element symbol description
100 data transmission system 102 first control circuits
104 data transmission media 106 second control circuits
1002,2024,4024,6022 receiving circuit 1004 decision circuitry
1022 coffret 1024 setup units
1026 counter 2022,4022 transfer circuits
2026,4028 Circuit tuning 4026 filter circuits
6024 circuit for checking input signals 6026 echo cancellation circuit coupling
Embodiment
Some vocabulary is employed to censure specific element in the middle of specification and follow-up claims.Person with usual knowledge in their respective areas should understand, and hardware manufacturer may call same element with different nouns.This specification and follow-up claims are not used as the mode of distinguish one element from another with the difference of title, but are used as the criterion of differentiation with element difference functionally." comprising " mentioned in the middle of specification and follow-up claim is in the whole text an open term, therefore should be construed to " comprise but be not limited to ".In addition, " coupling " word at this is comprise directly any and be indirectly electrically connected means, therefore, if describe a first device in literary composition to be coupled to one second device, then represent this first device and directly can be electrically connected in this second device, or be indirectly electrically connected to this second device by other device or connection means.
Please refer to Fig. 1.It is the schematic diagram of the embodiment according to a kind of data transmission system 100 of the present invention shown in Fig. 1.In data transmission system 100, it includes first control circuit 102, data transmission media 104 and a second control circuit 106, wherein first control circuit 102 is support one electricity-saving mechanism but does not have an Automatic Negotiation Mechanism (Auto-negotiation, NWAY) control circuit, and second control circuit 106 is connected with first control circuit 102 by data transmission media 104.In the present embodiment, this electricity-saving mechanism meets 802.3az energy-conservation Ethernet (EnergyEfficientEthernet, the EEE) standard that IEEE (IEEE) formulates.But, also specify that this electricity-saving mechanism must be installed in a control circuit by its Automatic Negotiation Mechanism formulated during the energy-conservation Ethernet standard of the 802.3az that IEEE formulated originally.In other words, in the specification of IEEE, a control circuit without this Automatic Negotiation Mechanism to perform its this electricity-saving mechanism formulated.Therefore, this electricity-saving mechanism that can also perform IEEE to make a control circuit without this Automatic Negotiation Mechanism and formulate, an inventive features of the present invention forces this electricity-saving mechanism meeting the energy-conservation Ethernet standard of 802.3aZ to be arranged on first control circuit 102 with in second control circuit 106, can support this electricity-saving mechanism to make first control circuit 102 and second control circuit 106 simultaneously.In order to reach this object, in data transmission system 100, at least the control circuit of one end must be this electricity-saving mechanism supporting to meet the energy-conservation Ethernet standard of 802.3az, and the control circuit of the other end can be then do not determine whether to support electricity-saving mechanism.For simplicity, the present embodiment can support that this electricity-saving mechanism is to illustrate how the present invention forces to be arranged at by this electricity-saving mechanism meeting the energy-conservation Ethernet standard of 802.3aZ in first control circuit 102 and second control circuit 106 for first control circuit 102.
First control circuit 102 includes coffret 1022, setup unit 1024 and a counter 1026.Coffret 1022 is used for carrying out Signal transmissions be coupled to first control circuit 102 one specific control circuit (referring to second control circuit 106 in this embodiment).Setup unit 1024 is coupled to coffret 1022, is used for controlling second control circuit 106 and is operated under this electricity-saving mechanism.Counter 1026 is used for after setup unit 1024 pressure setting second control circuit 106 is operated in this electricity-saving mechanism, broken string number of times between statistics first control circuit 102 and second control circuit 106, wherein setup unit 1024 determines whether closing this electricity-saving mechanism according to this broken string number of times in addition.
Substantially, when the first control circuit 102 of data transmission system 100 one end of the present invention is coupled to second control circuit 106 by data transmission media 104, it can have two kinds of different connection status usually, that is before connecting and after connecting.In the present invention, setup unit 1024 or can control second control circuit 106 after connecting before first control circuit 102 and second control circuit 106 connect to be operated under this electricity-saving mechanism.
First, one first embodiment of the present invention is after connecting when first control circuit 102 and second control circuit 106, and the coffret 1022 that setup unit 1024 directly controls first control circuit 102 enforces this electricity-saving mechanism.According to the specification of the energy-conservation Ethernet standard of 802.3az, after first control circuit 102 connects with second control circuit 106, and the data-transmission mode between first control circuit 102 and second control circuit 106 is 10MB (Mbytes per second, MegaByte) time, if first control circuit 102 enforces the words of this electricity-saving mechanism, no matter whether second control circuit 106 has the ability supporting this electricity-saving mechanism, and the connection between first control circuit 102 and second control circuit 106 still can maintain normal 10MB per second.Therefore, first control circuit 102 just can carry out exchanges data with second control circuit 106 with the data transmission rate of 10MB per second compared with the pattern of power saving with one.
On the other hand, after first control circuit 102 connects with second control circuit 106, if when the data-transmission mode between first control circuit 102 and second control circuit 106 is 100MB per second, if first control circuit 102 enforces this electricity-saving mechanism, then the situation that will occur to break between first control circuit 102 and second control circuit 106.Situation in order to ensure above-mentioned broken string caused by this electricity-saving mechanism of compulsory execution, and therefore counter 1026 provided by the present invention is just used to the broken string number of times when enforcing this electricity-saving mechanism between statistics first control circuit 102 and second control circuit 106.Furthermore, enforce this electricity-saving mechanism when first control circuit 102 at every turn and just broken string situation occurs, counter 1026 once to break number of times with regard to counting, if when this broken string number of times is more than a pre-determined number (such as three times), setup unit 1024 will stop enforcing this electricity-saving mechanism, and judges that second control circuit 106 does not have the ability supporting this electricity-saving mechanism.
One second embodiment of the present invention is after connecting when first control circuit 102 and second control circuit 106, setup unit 1024 will exchange electricity-saving mechanism relevant information each other with second control circuit 106, and when setup unit 1024 successfully exchanges electricity-saving mechanism relevant information each other with second control circuit 106, setup unit 1024 carrys out controls transfer interface 1022 according to the electricity-saving mechanism relevant information of second control circuit 106 and is operated under this electricity-saving mechanism.Further, after first control circuit 102 connects with second control circuit 106, the coffret 1022 of first control circuit 102 will come by the form transmitting bag to link up with second control circuit 106.Therefore, after first control circuit 102 connects with second control circuit 106, a triggering signal can be sent to second control circuit 106 by data transmission media 104 with the form of bag by the coffret 1022 of first control circuit 102.Then, support when meeting the ability of this electricity-saving mechanism of the energy-conservation Ethernet standard of 802.3az if second control circuit 106 has, second control circuit 106 can return the response signal of a correspondence to first control circuit 102 with the form of bag, and then starts the electricity-saving mechanism relevant information that exchanges between first control circuit 102 and second control circuit 106.Note that, after first control circuit 102 connects with second control circuit 106, the present invention is not limited to the relevant information exchanging this electricity-saving mechanism within the period performing which kind of communications protocol.In one embodiment, exchange the relevant information of this electricity-saving mechanism when coffret 1022 is and carries out exchange one Long-distance Control communications protocol between first control circuit 102 and second control circuit 106 simultaneously.And in another embodiment, coffret 1022 exchanges the relevant information of this electricity-saving mechanism simultaneously when being and carrying out exchange one Link Layer Discovery Protocol (LinkLayerDiscoveryProtocol, LLDP) between first control circuit 102 and second control circuit 106.
Of the present invention 1 the 3rd embodiment is before connecting when first control circuit 102 and second control circuit 106, setup unit 1024 meeting and second control circuit 106 exchange electricity-saving mechanism relevant information each other, and when setup unit 1024 successfully exchanges electricity-saving mechanism relevant information each other with second control circuit 106, setup unit 1024 carrys out controls transfer interface 1022 according to the electricity-saving mechanism relevant information of second control circuit 106 and is operated under this electricity-saving mechanism.Note that the first control circuit 102 of the 3rd embodiment and second control circuit 106 are comparatively suitably for the control circuit of a HDMI (High Definition Multimedia Interface) (High-DefinitionMultimediaInterface, HDMI).In the first control circuit 102 of this HDMI (High Definition Multimedia Interface), setup unit 1024 and second control circuit 106 can control by a consumer electronics communications protocol that (ConsumerElectronicsControl, CEC) channel defines to exchange electricity-saving mechanism relevant information each other.Further, in this example, the setup unit 1024 of first control circuit 102 is before first control circuit 102 and second control circuit 106 connect, and by this consumer electronics control channel, one triggering signal of this electricity-saving mechanism meeting the energy-conservation Ethernet standard of 802.3az is sent to second control circuit 106 by data transmission media 104.Support when meeting the ability of this electricity-saving mechanism of the energy-conservation Ethernet standard of 802.3az if second control circuit 106 also has, second control circuit 106 will return the response signal of a correspondence to first control circuit 102, and then starts the electricity-saving mechanism relevant information that exchanges between first control circuit 102 and second control circuit 106.
Of the present invention 1 the 4th embodiment is the embodiment extended out in conjunction with the technical characteristic of above-mentioned second embodiment and the first embodiment.Therefore, in the 4th embodiment of the present invention, after first control circuit 102 and second control circuit 106 connect, setup unit 1024 first will exchange electricity-saving mechanism relevant information each other by controls transfer interface 1022 with second control circuit 106, carry out the electricity-saving mechanism relevant information exchanged with second control circuit 106 each other with the form of attempting wrapping.If first control circuit 102 successfully cannot exchange electricity-saving mechanism relevant information each other during with second control circuit 106, setup unit 1024 will controls transfer interface 1022 to enforce this electricity-saving mechanism.In other words, 4th embodiment of the present invention first can perform the technical characteristic that the present invention instructs in this second embodiment, then why determine whether to perform the technical characteristic of instructing in this first embodiment again depending on its result again, to attempt this electricity-saving mechanism meeting the energy-conservation Ethernet standard of 802.3az to be arranged in second control circuit 106.Note that this field has and usually know that the knowledgeable should understand the technical characteristic of the present invention the 4th embodiment after reading the technical characteristic that the present invention instructs in this second embodiment and this first embodiment, therefore its detail work does not separately repeat at this.
Of the present invention 1 the 5th embodiment is the embodiment extended out in conjunction with the technical characteristic of above-mentioned 3rd embodiment and the first embodiment.Therefore, in the 5th embodiment of the present invention, before first control circuit 102 and second control circuit 106 connect, setup unit 1024 meeting controls transfer interface 1022 carrys out the electricity-saving mechanism relevant information exchanged with second control circuit 106 each other by the communications protocol that consumer electronics control (ConsumerElectronicsControl, a CEC) channel defines.If first control circuit 102 successfully cannot exchange electricity-saving mechanism relevant information each other during with second control circuit 106, then setup unit 1024 meeting controls transfer interface 1022 time-out and second control circuit 106 exchange electricity-saving mechanism relevant information each other, after first control circuit 102 and second control circuit 106 connect, then controls transfer interface 1022 is to enforce this electricity-saving mechanism.In other words, 5th embodiment of the present invention can prior to connecting the front technical characteristic performing the present invention and instruct in the 3rd embodiment, then why determine whether will perform the technical characteristic of instructing in this first embodiment upon connection again depending on its result again, to attempt this electricity-saving mechanism meeting the energy-conservation Ethernet standard of 802.3az to be arranged in second control circuit 106.Note that this field has and usually know that the knowledgeable should understand the technical characteristic of the present invention the 5th embodiment after reading the technical characteristic that the present invention instructs in the 3rd embodiment and this first embodiment, therefore its thin portion is operated in this does not separately repeat.
Of the present invention 1 the 6th embodiment is the embodiment extended out in conjunction with the technical characteristic of above-mentioned 3rd embodiment, the second embodiment and the first embodiment.Therefore, in the 6th embodiment of the present invention, before first control circuit 102 and second control circuit 106 connect, setup unit 1024 meeting controls transfer interface 1022 carrys out the electricity-saving mechanism relevant information exchanged with second control circuit 106 each other by the communications protocol that consumer electronics control (ConsumerElectronicsControl, a CEC) channel defines.If first control circuit 102 successfully cannot exchange electricity-saving mechanism relevant information each other during with second control circuit 106, then setup unit 1024 meeting controls transfer interface 1022 time-out and second control circuit 106 exchange electricity-saving mechanism relevant information each other, after first control circuit 102 and second control circuit 106 connect, then controls transfer interface 1022 is to attempt carrying out with the form of bag the electricity-saving mechanism relevant information that exchanges with second control circuit 106 each other.If when first control circuit 102 successfully cannot exchange electricity-saving mechanism relevant information each other with the form of bag and second control circuit 106, setup unit 1024 will controls transfer interface 1022 to enforce this electricity-saving mechanism, to attempt this electricity-saving mechanism meeting the energy-conservation Ethernet standard of 802.3az to be arranged in second control circuit 106.Please note, this field has knows that the knowledgeable should understand the technical characteristic of the present invention the 6th embodiment after reading the technical characteristic that the present invention instructs in the 3rd embodiment, this second embodiment and this first embodiment usually, therefore its thin portion is operated in this does not separately repeat.
On the other hand, in the above-described embodiments, if after this electricity-saving mechanism meeting the energy-conservation Ethernet standard of 802.3az is successfully arranged in second control circuit 106 by first control circuit 102, when first control circuit 102 and second control circuit 106 are in the process of running the low-power consumption mode (LowPowerIdle both entering this electricity-saving mechanism, LPI) time (such as a park mode), if when first control circuit 102 is for waking up second control circuit 106 from this park mode, one transfer circuit of first control circuit 102 can send the receiving circuit of a triggering signal to second control circuit 106 by coffret 1022, to wake second control circuit 106 up.In order to prevent a receiving circuit of the echo false wake-up first control circuit 102 caused by this triggering signal, therefore the present invention separately provides the impact that one the 7th embodiment causes to improve this echo data transmission system 100, as shown in Figure 2.When first control circuit 102 and second control circuit 106 are the control circuit of HDMI (High Definition Multimedia Interface), the impact that this echo causes data transmission system 100 is the most serious, this is owing to being the transmitting-receiving utilizing same data transmission media (such as with a pair transmission line) to carry out data between the first control circuit 102 of HDMI (High Definition Multimedia Interface) and second control circuit 106, when this triggering signal is sent to the receiving circuit of second control circuit 106 by the transfer circuit of first control circuit 102, the receiving circuit of first control circuit 102 is just likely by an echo institute false wake-up.Therefore following disclosed embodiment mainly illustrates technical characteristic of the present invention for the data transmission system of a HDMI (High Definition Multimedia Interface), and so it is not as restriction place of the present invention.
Prevent echo false wake-up to be in the 7th embodiment schematic diagram of the first control circuit 102 of low-power consumption mode (such as park mode) according to one of the present invention shown in Fig. 2.Please also refer to the data transmission system 100 shown in Fig. 1, the first control circuit 102 of Fig. 2 further comprises transfer circuit 2022, receiving circuit 2024 and a Circuit tuning 2026, wherein transfer circuit 2022 and receiving circuit 2024 are included in coffret 1022, and transfer circuit 2022 is used to transmission one and outputs signal So1.Receiving circuit 2024 is used to reception one input signal Si 1.Circuit tuning 2026 is coupled to receiving circuit 2024, when first control circuit 102 all enters this low-power consumption mode from a normal mode of operation with second control circuit 106, one input signal critical value of receiving circuit 2024 is adjusted to one second critical value Vth2 from one first critical value Vth1 by Circuit tuning 2026, and when a signal strength signal intensity of input signal Si 1 reaches the second critical value Vth2, input signal Si 1 is just considered as an effective input signal by receiving circuit 2024.On the other hand, when first control circuit 102 all enters this normal mode of operation from this low-power consumption mode with second control circuit 106, this input signal critical value is separately adjusted to one the 3rd critical value Vth3 from the second critical value Vth2 by Circuit tuning 2026, and this signal strength signal intensity of input signal Si 1 is when reaching the 3rd critical value Vth3, input signal Si 1 is just considered as an effective input signal by first control circuit 102, as shown in Figure 3.Fig. 3 is the schematic diagram of this input signal critical value when different working modes of the receiving circuit 2024 according to Fig. 2 of the present invention.Note that for convenience's sake, the 3rd critical value Vth3 of the present embodiment is set as being equal to the first critical value Vth1 haply, and so it is not as restriction place of the present invention, and the 3rd critical value Vth3 is greater than or less than the first critical value Vth1.
When first control circuit 102 enters this low-power consumption mode, its receiving circuit 2024 is also in this low-power consumption mode (such as park mode).In other words, now the receiving circuit 2024 of first control circuit 102 does not need to receive any input signal Si 1.Therefore, in order to effectively prevent the receiving circuit 2024 of the echo false wake-up first control circuit 102 caused by this triggering signal, when first control circuit 102 enters this low-power consumption mode with second control circuit 106 from this normal mode of operation, Circuit tuning 2026 will by this input signal critical value of receiving circuit 2024 to should the first critical value Vth1 of normal mode of operation be increased to should the second critical value Vth2 of low-power consumption mode.Via suitably designing, second critical value Vth2 can come high than the signal strength signal intensity of this echo, therefore, when the transfer circuit 2022 of first control circuit 102 transmits this triggering signal to second control circuit 106, the receiving circuit 2024 of first control circuit 102 would not this echo of causing by this triggering signal wake up.
On the other hand, when the receiving circuit 2024 of first control circuit 102 enter this normal mode of operation be used for reception one normal input signal Si 1 time, this input signal critical value is come down to one the 3rd critical value Vth3 (that is to should the first critical value Vth1 of normal mode of operation) from the second critical value Vth2 by Circuit tuning 2026 again, now, this signal strength signal intensity of input signal Si 1 must reach the first critical value Vth1 and just can be received circuit 2024 and be judged to be an effective input signal.
In brief, the technical characteristic of the first control circuit 102 of above-mentioned 7th embodiment can be had the method for the following step by simplification:
Step 201: first control circuit 102 is connected to second control circuit 106;
Step 202: receive input signal Si 1 from second control circuit 106;
Step 203: when first control circuit 102 all enters this low-power consumption mode with second control circuit 106, this input signal critical value of receiving circuit 2024 being heightened from the first critical value Vth1 is the second critical value Vth2, when the signal strength signal intensity of input signal Si 1 reaches the second critical value Vth2, input signal Si 1 is just considered as an effective input signal by receiving circuit 2024; And
Step 204: when the receiving circuit 2024 of first control circuit 102 enter this normal mode of operation be used for reception one normal input signal Si 1 time, this input signal critical value is come down to one the 3rd critical value Vth3 (that is to should the first critical value Vth1 of normal mode of operation) from the second critical value Vth2, now, this signal strength signal intensity of input signal Si 1 must reach the first critical value Vth1 and just can be received circuit 2024 and be judged to be a legal input signal.
Please refer to Fig. 4.Prevent echo false wake-up to be in the 8th embodiment schematic diagram of the first control circuit 102 of a low-power consumption mode (such as a park mode) according to one of the present invention shown in Fig. 4.The first control circuit 102 that please also refer to the data transmission system 100, Fig. 4 shown in Fig. 1 also comprises transfer circuit 4022, receiving circuit 4024, filter circuit 4026 and a Circuit tuning 4028.Transfer circuit 4022 is used to transmission one and outputs signal So2.Receiving circuit 4024 is used to reception one input signal Si 2.Filter circuit 4026 is coupled to receiving circuit 4024, is used for carrying out filtering to the input signal Si 2 received by first control circuit 102.Circuit tuning 4028 is coupled to filter circuit 4026, to be used at first control circuit 102 and second control circuit 106 all from a normal mode of operation for before entering a low-power consumption mode, one cut-off frequency of filter circuit 4026 is adjusted to one second critical frequency F2 from one first critical frequency F1, when wherein a signal frequency of input signal Si 2 is lower than the second critical frequency F2, input signal Si 2 is just considered as an effective input signal by first control circuit 102.On the other hand, when first control circuit 102 all enters this normal mode of operation from this low-power consumption mode with second control circuit 106, this cut-off frequency is adjusted to one the 3rd critical frequency F3 from the second critical frequency F2 by Circuit tuning 4028 again, and this signal frequency of input signal Si 2 lower than the 3rd critical frequency F3 time, input signal Si 2 is just considered as an effective input signal by first control circuit 102, as shown in Figure 5.Fig. 5 is the frequency gain graph of a relation of this cut-off frequency when different working modes of the filter circuit 4026 according to Fig. 4 of the present invention.Note that for convenience's sake, the 3rd critical frequency F3 of the present embodiment is set as being equal to the first critical frequency F1 haply, and so it is not as restriction place of the present invention, and the 3rd critical frequency F3 can also higher or lower than the first critical frequency F1.
On general, the frequency of one echo can be come high than the frequency of normal input signal Si 2, therefore when first control circuit 102 enters this low-power consumption mode from this normal mode of operation, this cut-off frequency of filter circuit 4026 is just turned down to the second critical frequency F2 from the first critical frequency F1 by Circuit tuning 4028, filters with the high frequency echo effectively this triggering signal caused.Via suitably designing, second critical frequency F2 can come low than the frequency of this echo, therefore, when the transfer circuit 2022 of first control circuit 102 transmits this triggering signal to second control circuit 106, this echo will first filtered circuit 4026 filter and make the receiving circuit 2024 of first control circuit 102 can not this echo of causing by this triggering signal wake up.
On the other hand, when first control circuit 102 receiving circuit 2024 for enter from this low-power consumption mode this normal mode of operation be used for reception one normal input signal Si 2 time, it is the 3rd critical frequency F3 (that is to should the first critical frequency F1 of normal mode of operation) that this cut-off frequency of filter circuit 4026 is heightened from the second critical frequency F2 by Circuit tuning 4028 again, now, as long as the frequency of input signal Si 2 just can pass through filter circuit 4026 lower than the first critical frequency F1, and then received circuit 2024 is judged to be an effective input signal.
In brief, the technical characteristic of the first control circuit 102 of above-mentioned 8th embodiment can be had the method for the following step by simplification:
Step 401: first control circuit 102 is connected to second control circuit 106;
Step 402: utilize filter circuit 4026 to carry out filtering to first control circuit 102 from the input signal Si 2 received by second control circuit 106;
Step 403: at first control circuit 102 and second control circuit 106 all for before entering this low-power consumption mode, being turned down from the first critical frequency F1 by this cut-off frequency of filter circuit 4026 is the second critical frequency F2, and when a signal frequency of input signal Si 2 is lower than the second critical frequency F2, input signal Si 2 is just considered as an effective input signal by first control circuit 102;
Step 403: when first control circuit 102 receiving circuit 2024 for enter from this low-power consumption mode this normal mode of operation be used for reception one normal input signal Si 2 time, being heightened from the second critical frequency F2 by this cut-off frequency of filter circuit 4026 is the 3rd critical frequency F3 (that is to should the first critical frequency F1 of normal mode of operation), as long as and when the frequency of input signal Si 2 is lower than the first critical frequency F1, receiving circuit 2024 just judges that input signal Si 2 is as an effective input signal.
Please refer to Fig. 6.Prevent echo false wake-up to be in the 9th embodiment schematic diagram of the first control circuit 102 of low-power consumption mode (such as park mode) according to one of the present invention shown in Fig. 6.The first control circuit 102 that please also refer to the data transmission system 100, Fig. 6 shown in Fig. 1 also includes receiving circuit 6022, circuit for checking input signals 6024 and an echo cancellation circuit coupling 6026 (such as one digital echo cancellation circuit coupling).Receiving circuit 6022 is used for reception one input signal Si 3.Circuit for checking input signals 6024 is used for detecting whether input signal Si 3 is an effective input signal.Echo cancellation circuit coupling 6026 is coupled between receiving circuit 6022 and circuit for checking input signals 6024, be used for carrying out an echo cancellation process, wherein echo cancellation circuit coupling 6026 is just sent to circuit for checking input signals 6024 after input signal Si 3 is carried out this echo cancellation process.Therefore, when first control circuit 102 all enters a low-power consumption mode with second control circuit 106, if first control circuit 102 produce a triggering signal to second control circuit 106 to wake second control circuit 106 up time, the echo caused by this triggering signal was just eliminated by echo cancellation circuit coupling 6026 before importing receiving circuit 6022 into.Thus, the receiving circuit 6022 of first control circuit 102 would not wake up by this echo caused by this triggering signal by mistake.
In brief, the technical characteristic of the first control circuit 102 of above-mentioned 9th embodiment can be had the method for the following step by simplification:
Step 601: first control circuit 102 is connected to second control circuit 106;
Step 602: receive input signal Si 3;
Step 603: utilize echo cancellation circuit coupling 6026 to carry out an echo cancellation process to input signal Si 3;
Step 604: judge to carry out the input signal Si 3 of this echo cancellation process whether as an effective input signal.
Please refer to Fig. 7.Prevent echo false wake-up to be in the tenth embodiment schematic diagram of the first control circuit 102 of low-power consumption mode (such as a park mode) according to one of the present invention shown in Fig. 7.The first control circuit 102 that please also refer to the data transmission system 100, Fig. 7 shown in Fig. 1 also comprises receiving circuit 1002 and a decision circuitry 1004.Receiving circuit 1002 is used for reception one input signal Si 4.Decision circuitry 1004 is coupled to receiving circuit 1002, be used for judging whether a signal frequency of input signal Si 4 reaches a preset frequency, wherein when this signal frequency does not reach this preset frequency, then decision circuitry 1004 judges that input signal Si 4 is effective input signals, and when this signal frequency reaches this preset frequency, then decision circuitry 1004 judges that input signal Si 4 is invalid input signals.Because the frequency of echo can be come high than the frequency of normal input signal Si 4, and via suitably designing, the frequency of normal input signal Si 4 should be drop within a predetermined frequency range.If the frequency of an input signal Si 4 is higher than this predetermined frequency range, represent that the frequency of input signal Si 4 reaches this preset frequency (this preset frequency can be set as the upper frequency limit of this predetermined frequency range), then decision circuitry 1004 judges that input signal Si 4 (that is this echo) is an invalid input signal.Otherwise, if the frequency of an input signal falls in this predetermined frequency range, represent that the frequency of input signal Si 4 does not reach this preset frequency (upper frequency limit of this predetermined frequency range), then decision circuitry 1004 judges that this input signal Si 4 is effective input signals.Thus, via judging that the frequency of input signal Si 4 is to judge whether this input signal Si 4 can prevent this echo from being waken up by the receiving circuit 6022 of first control circuit 102 as once effective input signal effectively by mistake.
In brief, the technical characteristic of the first control circuit 102 of above-mentioned tenth embodiment can be had the method for the following step by simplification:
Step 701: first control circuit 102 is connected to second control circuit 106;
Step 702: receive input signal Si 4;
Step 703: judge that whether the signal frequency of input signal Si 4 is higher than this preset frequency, wherein when this signal frequency is higher than this preset frequency, skips to step 704, when this signal frequency is not higher than this preset frequency, skip to step 705;
Step 704: judge that input signal Si 4 is invalid input signals;
Step 705: judge that input signal Si 4 is effective input signals.
In sum, embodiments of the invention attempt this electricity-saving mechanism meeting the energy-conservation Ethernet standard of 802.3aZ to be arranged on the first control circuit 102 at data transmission system 100 two ends in a forced fashion with in second control circuit 106, can support this electricity-saving mechanism to make first control circuit 102 and second control circuit 106 simultaneously.In addition, after this electricity-saving mechanism meeting the energy-conservation Ethernet standard of 802.3az is successfully arranged in second control circuit 106 by first control circuit 102, and when first control circuit 102 is all in this low-power consumption mode with second control circuit 106, if when first control circuit 102 is for waking up second control circuit 106 from this park mode, present invention also offers some embodiments and the receiving circuit of first control circuit 102 being waken up to prevent echo by mistake.
The foregoing is only embodiments of the invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (10)
1. be used for being connected to a control circuit for a specific control circuit, include:
One coffret, being used for the specific control circuit with carries out Signal transmissions, and described coffret comprises:
One receiving circuit, is used for reception one input signal; And
One setup unit, is coupled to described coffret, is used for after described coffret and described specific control circuit connect, and controls described coffret and enforces electricity-saving mechanism;
One counter, be used for after the described specific control circuit of described setup unit pressure setting is operated in described electricity-saving mechanism, add up the broken string number of times between described control circuit and described specific control circuit, wherein, described setup unit also determines whether closing described electricity-saving mechanism according to described broken string number of times;
One Circuit tuning, be coupled to described receiving circuit, when described control circuit and described specific control circuit all enter a low-power consumption mode, one input signal critical value of described receiving circuit is adjusted to one second critical value from one first critical value by described Circuit tuning, and a signal strength signal intensity of described input signal is when reaching described second critical value, described input signal is just considered as an effective input signal by described receiving circuit.
2. control circuit according to claim 1, wherein, when described control circuit and described specific control circuit all enter a normal mode of operation, described input signal critical value is adjusted to one the 3rd critical value from described second critical value by described Circuit tuning again, and the described signal strength signal intensity of described input signal is when reaching described 3rd critical value, described input signal is just considered as an effective input signal by described control circuit.
3. be used for being connected to a control circuit for a specific control circuit, include:
One coffret, being used for the specific control circuit with carries out Signal transmissions, and described coffret comprises:
One receiving circuit, is used for reception one input signal; And
One filter circuit, is used for carrying out filtering to the input signal received by described control circuit; And
One setup unit, is coupled to described coffret, is used for after described coffret and described specific control circuit connect, and controls described coffret and enforces electricity-saving mechanism;
One counter, be used for after the described specific control circuit of described setup unit pressure setting is operated in described electricity-saving mechanism, add up the broken string number of times between described control circuit and described specific control circuit, wherein, described setup unit also determines whether closing described electricity-saving mechanism according to described broken string number of times;
One Circuit tuning, be coupled to described filter circuit, for at described control circuit and described specific control circuit all for before entering a low-power consumption mode, one cut-off frequency of described filter circuit is adjusted to one second critical frequency from one first critical frequency, when one signal frequency of wherein said input signal reaches described second critical frequency, described input signal is just considered as an effective input signal by described control circuit.
4. control circuit according to claim 3, wherein, when described control circuit and described specific control circuit all enter a normal mode of operation, described cut-off frequency is adjusted to one the 3rd critical frequency from described second critical frequency by described Circuit tuning again, and the described signal frequency of described input signal is when reaching described 3rd critical frequency, described input signal is just considered as an effective input signal by described control circuit.
5. control circuit according to claim 3, wherein, described first critical frequency is higher than described second critical frequency.
6. a control method, includes:
One control circuit with a receiving circuit is connected to a specific control circuit, and described receiving circuit is included in a coffret;
Utilize the reception of described receiving circuit from an input signal of described specific control circuit;
After described coffret and described specific control circuit connect, control described coffret and enforce electricity-saving mechanism;
Be used for, after the described specific control circuit of pressure setting is operated in described electricity-saving mechanism, adds up the broken string number of times between described control circuit and described specific control circuit, and determining whether closing described electricity-saving mechanism according to described broken string number of times; And
When described control circuit and described specific control circuit all enter a low-power consumption mode, one input signal critical value of described receiving circuit is adjusted to one second critical value from one first critical value, and when a signal strength signal intensity of described input signal reaches described second critical value, described input signal is just considered as an effective input signal by described receiving circuit.
7. control method according to claim 6, wherein, when described control circuit and described specific control circuit all enter a normal mode of operation, again described input signal critical value is adjusted to one the 3rd critical value from described second critical value, and the described signal strength signal intensity of described input signal is when reaching described 3rd critical value, described input signal is just considered as an effective input signal by described control circuit.
8. a control method, includes:
One control circuit with a receiving circuit is connected to a specific control circuit, and described receiving circuit is included in a coffret;
Utilize the reception of described receiving circuit from an input signal of described specific control circuit;
After described coffret and described specific control circuit connect, control described coffret and enforce electricity-saving mechanism;
Be used for, after the described specific control circuit of pressure setting is operated in described electricity-saving mechanism, adds up the broken string number of times between described control circuit and described specific control circuit, and determining whether closing described electricity-saving mechanism according to described broken string number of times;
A filter circuit is utilized to carry out filtering to described control circuit from the input signal received by described specific control circuit; And
At described control circuit and described specific control circuit all for before entering a low-power consumption mode, one cut-off frequency of described filter circuit is adjusted to one second critical frequency from one first critical frequency, when one signal frequency of wherein said input signal reaches described second critical frequency, described input signal is just considered as an effective input signal by described control circuit.
9. control method according to claim 8, wherein, when described control circuit and described specific control circuit all enter a normal mode of operation, a Circuit tuning is utilized again described cut-off frequency to be adjusted to one the 3rd critical frequency from described second critical frequency, and the described signal frequency of described input signal is when reaching described 3rd critical frequency, described input signal is just considered as an effective input signal by described control circuit.
10. control method according to claim 8, wherein, described first critical frequency is higher than described second critical frequency.
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| CN201010565425.9A CN102480301B (en) | 2010-11-29 | 2010-11-29 | Electricity-saving mechanism and the mechanism and the method thereof that prevent false wake-up of control circuit |
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| CN102480301B true CN102480301B (en) | 2016-01-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814934A (en) * | 2009-02-20 | 2010-08-25 | 瑞昱半导体股份有限公司 | Communication device with echo cancellation function and method thereof |
| CN101873679A (en) * | 2009-04-23 | 2010-10-27 | 瑞昱半导体股份有限公司 | Methods and apparatuses of network system with power saving functions |
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| US8532718B2 (en) * | 2005-10-06 | 2013-09-10 | Broadcom Corporation | Mobile communication device with low power signal detector |
| US8554333B2 (en) * | 2008-07-24 | 2013-10-08 | Pacesetter, Inc. | Adaptable communication sensitivity for an implantable medical device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101814934A (en) * | 2009-02-20 | 2010-08-25 | 瑞昱半导体股份有限公司 | Communication device with echo cancellation function and method thereof |
| CN101873679A (en) * | 2009-04-23 | 2010-10-27 | 瑞昱半导体股份有限公司 | Methods and apparatuses of network system with power saving functions |
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