CN101729189B - Transmitting-receiving device and receiver - Google Patents
Transmitting-receiving device and receiver Download PDFInfo
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- CN101729189B CN101729189B CN 200810170142 CN200810170142A CN101729189B CN 101729189 B CN101729189 B CN 101729189B CN 200810170142 CN200810170142 CN 200810170142 CN 200810170142 A CN200810170142 A CN 200810170142A CN 101729189 B CN101729189 B CN 101729189B
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Abstract
The invention relates to a transmitting-receiving device and a receiver. The receiver comprises an analog-digital converter, an equalizer, a splitter, a delay unit, a decoder, a selection unit and a control unit, wherein the analog-digital converter is used for carrying out analog-digital conversion on a receiving signal so as to generate a digital signal; the equalizer is used for adjusting the digital signal and generating an equalizing signal; the splitter receives and splitters the equalizing signal and generates a splitting signal; the delay unit is used for delaying the splitting signal; the decoder is used for determining whether the received equalizing signal is decoded or not according to the control signal; the selection unit is coupled to the splitter and the decoder and used for selecting one of the splitting signal or the output of the decoder as an output signal according to a second control signal; and the control unit is coupled to the splitter and the selection unit and used for determining whether the control signal and the second control signal are enabled according to the states of the splitting signal and the output signal.
Description
Technical field
The invention relates to a kind of R-T unit, and particularly relevant for a kind of R-T unit and receiver.
Background technology
In network communication system, can use R-T unit (Transceiver) to be used as the transmission medium of signal usually.R-T unit generally is to be made up of conveyer (Transmitter, be called for short TX) and receiver (Receiver is called for short RX), and conveyer can be used to export signal, and receiver can be used to receive signal.
In general, R-T unit can't all be in data transmission state always in the transmission course of carrying out signal, that is to say, R-T unit also can be in idle (Idle) state in carrying out signals transmission, that is in the transmission course of signal and free of data.In addition, in GBIC network (Gigabit Ethernet), receiver can dispose Viterbi decoder (Viterbi Decoder) to reduce the bit error rate of signal.Because Viterbi decoder itself is the mechanism of detection signal state not, that is Viterbi decoder can't detect at this moment that signal is in data transmission state or idle state, and the power consumption of Viterbi decoder is quite big.Thus, known R-T unit can be wasted too much power consumption.
Summary of the invention
The present invention provides a kind of R-T unit and receiver, uses and reaches purpose of power saving.
The present invention proposes a kind of receiver, is applicable to the reception signal that the receiving remote device is transmitted.Receiver comprises analog-digital converter, equalizer, sheer, delay cell, decoder and selected cell and control unit.Analog-digital converter carries out the analog digital conversion in order to will receive signal, to produce digital signal.Equalizer is coupled to analog-digital converter, in order to the adjustment digital signal, and produces equalizing signal.Sheer (Slicer) is coupled to equalizer, receives and the cutting equalizing signal, and produces the cutting signal.Delay cell is coupled to sheer, in order to postpone the cutting signal.Decoder is coupled to equalizer, in order to determine whether decode to received signal according to control signal.Selected cell is coupled to sheer and decoder, in order to according to second control signal, and select output equalizing signal and decoder output one of them as exporting signal.Control unit is coupled to sheer and selected cell, in order to determine the whether activation control signal and second control signal according to the state of cutting signal and output signal.
In an embodiment of the present invention; When control unit detects the cutting signal and has the crossfire character original position that receives data in the signal; Then activation control signal; And have the crossfire character end position that receives data in the signal and cutting signal when not having the crossfire character original position that receives data in the signal when control unit detects the output signal, forbidden energy control signal then.
In an embodiment of the present invention; When control unit detects the cutting signal and has the crossfire character original position that receives data in the signal; At interval behind the Preset Time; Activation second control signal, and have the crossfire character end position that receives data in the signal and cutting signal when not having the crossfire character original position that receives data in the signal, then forbidden energy control signal when control unit detects the output signal.
In an embodiment of the present invention, above-mentioned decoder is Viterbi decoder (Viterbi decoder).
The present invention proposes a kind of R-T unit with above-mentioned receiver.
The present invention detects the state (that is state of reception signal) of cutting signal through the control unit in the receiver, and produces control signal accordingly.That is to say that when cutting signal (reception signal) is in idle state, control unit is the above-mentioned control signal of forbidden energy then; When cutting signal (reception signal) is in data transmission state, control unit is the above-mentioned control signal of activation then.Afterwards, decoder is then according to the state of control signal, and whether decision decodes to received signal.That is to say that when control signal during by forbidden energy, decoder stops to decode to received signal; That is decoder is the state of decommissioning; And control unit can be controlled cutting signal that selected cell selects the to be postponed output signal as receiver, and when control signal was enabled, decoder was decoded to received signal; That is decoder is operating state, and control unit can be controlled selected cell and selects the output signal of the output of decoder as receiver.Thus, the present invention can reduce the power consumption of receiver effectively.
For letting the above-mentioned feature and advantage of the present invention can be more obviously understandable, hereinafter is special lifts embodiment, and cooperates appended graphicly, elaborates as follows.
Description of drawings
Fig. 1 illustrates the calcspar into the R-T unit of one embodiment of the invention.
Fig. 2 illustrates the sketch map into the reception signal of one embodiment of the invention.
Fig. 3 illustrates the flow chart into the electricity saving method of one embodiment of the invention.
[main element label declaration]
100: R-T unit
110: remote-control device
150: receiver
152: sheer
154: decoder
156: selected cell
158: control unit
160: delay cell
162: analog-digital converter
164: equalizer
S1: receive signal
ES: equalizing signal
CS: control signal
CS2: second control signal
OS1: output signal
Idle: idle state
SSD1, SSD2: crossfire character original position
Csreset: during the replacement
ESD1, ESD2: crossfire character end position
Data: data transmission state
T1, T2: during
S301～S307: each step of the electricity saving method of the receiver of the embodiment of the invention
Embodiment
Fig. 1 illustrates the calcspar into the R-T unit of one embodiment of the invention.The R-T unit 100 of present embodiment can be applied on the GBIC network (Gigabit Ethernet), but does not limit its scope.Please with reference to Fig. 1, R-T unit 100 comprises receiver 150.The reception signal S1 that receiver 150 is transmitted in order to receiving remote device 110.In the present embodiment, receiving signal S1 is continuous signal, that is after R-T unit 100 comes into operation, and receiver 150 i.e. the reception signal S1 that exported of receiving remote device 110 continuously.
In general, receive signal S1 in transmission course, can have idle (Idle) state or data transmission state.And, when receiving signal S1 and be in idle state, be the voltage signal that transmits 3 rank (level), that is " 1 ", " 0 ", " 1 ".And when receiving signal S1 and be in data transmission state, be the voltage signal that transmits 5 rank, that is " 1 ", " 0.5 ", " 0 ", " 0.5 ", " 1 ".
Please continue with reference to Fig. 1; Receiver 150 comprise analog-digital converter (Analog to Digital Converter, ADC) 162, equalizer (Equalizer) 164, sheer (Slicer) 152, delay cell 160, decoder 154, selected cell 156 and control unit 158.Analog-digital converter 162 carries out the analog digital conversion in order to S1 to received signal, to produce digital signal.Equalizer 164 is coupled to analog-digital converter 162, in order to the adjustment digital signal, to produce equalizing signal ES.
Sheer 152 is coupled to equalizer 164, in order to receive and cutting equalizing signal ES, to produce the cutting signal.In the present embodiment, because decoder 154 needs Preset Time, could decode correct decoded signal to equalizing signal ES.And the time length at 154 couples of equalizing signal ES of sheer 152 and decoder place is different.And asynchronous for fear of the output of cutting signal that is sent to selected cell 156 and decoder 154, and cause receiver 150 to produce wrong decoded signal.Therefore, delay cell 160 can be coupled to sheer 152, in order to postpone the cutting signal.
Selected cell 156 is coupled to sheer 152 and decoder 154, according to the second control signal CS2, and select cutting signal (output of delay cell 160) that output postponed and decoder 154 output one of them as output signal OS1.For instance, when decoder 154 was not decoded to equalizing signal ES, then the second control signal CS2 was by forbidden energy, so the cutting signal that selected cell 156 can be selected to be postponed is as output signal OS1.When 154 couples of equalizing signal ES of decoder decoded, then the second control signal CS2 was enabled, so the output that selected cell 156 can be selected decoder 154 is as output signal OS1.In the present embodiment, selected cell 156 can be multiplexer (Multiplexer).
What deserves to be mentioned is, in the present embodiment, handle through the voltage signal on 152 pairs of 3 rank of sheer, and handle through the voltage signal on 154 pairs of 5 rank of decoder.Thus, the bit error rate (Bit Error Rate) in the time of can reducing receiver 150 decoding reception signal S1 effectively.
In order to make those skilled in the art can understand operation how to control decoder 156, below will lift an example and explain.Fig. 2 illustrates the sketch map into the reception signal of one embodiment of the invention.Please with reference to Fig. 2, label Idle representes to receive signal S1 and is in idle state; Label SSD1, SSD2 represent to receive data among the signal S1 crossfire character original position (Start of Stream Delimiter, SSD); Label Data representes to receive signal S1 and is in the transfer of data shape; During label Crreset representes to reset, that is show that receiving signal S1 will soon convert idle state into by data transmission state; ESD1, ESD2 represent to receive data among the signal S1 crossfire character end position (End of Stream Delimiter, ESD).In the present embodiment, explanation for ease, therefore receive the state of signal S1 can be in regular turn for Idle, SSD1, SSD2, Data, Crreset, Crreset, ESD1, ESD2, Idle ....
Please merge with reference to Fig. 1 and Fig. 2, at first, the reception signal is that the state of S1 is Idle, and therefore, sheer 152 is after handling equalizing signal ES, and the state of the cutting signal that produces also is Idle.Therefore, control unit 158 can be Idle according to the state of cutting signal, and forbidden energy control signal CS and the second control signal CS2, makes decoder 154 decommission and lets cutting signal that selected cell 156 selects to be postponed as exporting signal OS1.
Then; Sheer 152 continues equalizing signal ES is handled; And when control unit 158 detects the cutting signal and has the crossfire character original position SSD1 that receives data among the signal S1; That is receive signal S1 and convert data transmission state into by idle state, then activation control signal CS is so that let decoder 154 come into operation.(receive signal S1) because 154 couples of equalizing signal ES of decoder and be decoded to decoding and have the one piece of data processing time between finishing; And this data processing time is about memory length (Memory Length), and this memory length can be adjusted by the user voluntarily.Therefore; When control unit 158 activations go out control signal CS; And through behind the Preset Time (that is memory length); When this moment, decoder 154 was output as effective decoded signal, control unit 158 can activations go out the second control signal CS2, so that let output that selected cell 156 selects decoders 154 as output signal OS1.
Afterwards, decoder 154 continues equalizing signal ES is handled, and the output that selected cell 156 continues to select decoder 154 is as output signal OS1.In the present embodiment, (Inter Packet Gap, IPG), that is reception signal S1 is in the time span of idle state to receive signal S1 and be the packet interval that is spaced apart that is between a data transmission state and the next record data transmission state.Therefore; When control unit 158 detects output signal OS1 and has the crossfire character end position ESD1 that receives data among the signal S1, ESD2; That is receive package among the signal S1 and transmitted and finish; And soon convert idle state to by data transmission state, control unit 158 can judge that whether packet interval is greater than memory length again.
If packet interval is greater than Preset Time; It is longer in the time of idle state that expression receives signal S1; That is control unit 158 is when detecting output signal OS1 and have the crossfire character end position ESD1 that receives data among the signal S1; And before and after above-mentioned Preset Time, do not detect the crossfire character original position SSD1 that the cutting signal has next data among the reception signal S1, and therefore, the control unit 158 meeting forbidden energy control signal CS and the second control signal CS2; So that let decoder 154 decommission, and let cutting signal that selected cell 156 selects to be postponed as output signal OS1.By this, present embodiment can be saved the power consumption of receiver 150 effectively.
Otherwise; If packet interval is during less than Preset Time; Expression receives signal S1 in short (the decoder 154 last data that still have been untreated of the time of idle state; And just the producing of next record data), that is control unit 158 is when detecting output signal OS1 and having the crossfire character end position ESD1 of data among the input signal S1, and before and after above-mentioned Preset Time, has and detect the crossfire character original position SSD1 that the cutting signal has data among the input signal S1; So the time control unit 158 can continue the activation control signal CS and the second control signal CS2; Letting decoder 154 continue to operate, so that on having decoded, after data, immediately the next record data are decoded; And let the selected cell 156 lasting outputs of selecting decoder 154 as output signal OS1, to avoid letting output signal OS1 produce the decoded signal of mistake.
Through the explanation of the foregoing description, can summarize a kind of receiver electricity saving method.Fig. 3 illustrates the electricity saving method flow chart into the receiver of one embodiment of the invention.The receiver of present embodiment can have decoder, and for example is Viterbi decoder, but does not limit its scope.Please, at first, in step S301, receive signal, that is receiver receives the reception signal of being exported by remote-control device with reference to Fig. 3.
Afterwards, whether in step S303, detecting and receiving signal is that idle shape control decoder operates attitude.When detecting when receiving signal and being idle state, then carry out step S305, the forbidden energy control signal decommissions with the control decoder.Afterwards, when decoder quits work, the control unit in the receiver just can forbidden energy second control signal, so that let selected cell not select the output signal of the output of decoder as receiver.
On the other hand, be not idle state (also being data transmission state) when detecting the state that receives signal, then carry out step S307, the activation control signal is decoded to control decoder to received signal.Afterwards; When decoder advance decode to received signal after, the control unit in the receiver just can activation second control signal, so that let selected cell select the output signal of the output of decoder as receiver; Thus, the receiver of the present embodiment power consumption that can reduce effectively.
In sum, the present invention detects the state (that is state of reception signal) of cutting signal through the control unit in the receiver, and produces control signal accordingly.That is to say that when cutting signal (reception signal) is in idle state, control unit is the above-mentioned control signal of forbidden energy then; When cutting signal (reception signal) is in data transmission state, control unit is the above-mentioned control signal of activation then.Afterwards, decoder is then according to the state of control signal, and whether decision decodes to received signal.That is to say that when control signal during by forbidden energy, decoder stops to decode to received signal, that is decoder is the state of decommissioning, and control unit can be controlled cutting signal that selected cell selects the to be postponed output signal as receiver; When control signal was enabled, decoder was decoded to received signal, that is decoder is operating state, and control unit can be controlled selected cell and selects the output signal of the output of decoder as receiver.Thus, the present invention can reduce the power consumption of receiver effectively.
Though the present invention discloses as above with embodiment; Right its is not that any those skilled in the art are not breaking away from the spirit and scope of the present invention in order to qualification the present invention; When can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking appended the claim scope person of defining.
Claims (5)
1. a receiver is applicable to the reception signal that the receiving remote device is transmitted, and this receiver comprises:
Analog-digital converter carried out the analog digital conversion in order to should receive signal, to produce digital signal;
Equalizer is coupled to this analog-digital converter, in order to adjusting this digital signal, and produces equalizing signal;
Sheer is coupled to this equalizer, in order to reception and this equalizing signal of cutting, and produces the cutting signal;
Delay cell is coupled to this sheer, in order to postpone this cutting signal;
Decoder is coupled to this equalizer, in order to determine whether this equalizing signal is decoded according to control signal;
Selected cell is coupled to this sheer and this decoder, in order to according to second control signal, and select this cutting signal that is postponed of output and this decoder output one of them as exporting signal; And
Control unit; Couple this sheer and this selected cell; In order to judging that according to the state of this cutting signal and this output signal the state that receives signal is idle state or data transmission state, with corresponding decision whether this control signal of activation and this second control signal.
2. receiver according to claim 1; Wherein when this control unit detects this cutting signal and has a crossfire character original position of data in this reception signal; This control signal of activation then; And have a crossfire character end position of data in this reception signal and do not detect this cutting signal before and after the Preset Time when having a crossfire character original position of data in this reception signal when this control unit detects this output signal, this control signal of forbidden energy then.
3. receiver according to claim 1; Wherein when this control unit detects this cutting signal and has a crossfire character original position of data in this reception signal; At interval behind the Preset Time; This second control signal of activation; And have a crossfire character end position of data in this reception signal and before and after this Preset Time, do not detect this cutting signal when having a crossfire character original position of data in this reception signal when this control unit detects this output signal, this control signal of forbidden energy then.
4. receiver according to claim 1, wherein this decoder is a Viterbi decoder.
5. R-T unit with receiver as claimed in claim 1.
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| CN 200810170142 CN101729189B (en) | 2008-10-13 | 2008-10-13 | Transmitting-receiving device and receiver |
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| CN 200810170142 CN101729189B (en) | 2008-10-13 | 2008-10-13 | Transmitting-receiving device and receiver |
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| CN101729189B true CN101729189B (en) | 2012-12-26 |
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| CN1913505A (en) * | 2006-08-10 | 2007-02-14 | 上海交通大学 | Low dissipation joint balance decoder for billi Ethernet |
| GB2430334A (en) * | 2005-09-15 | 2007-03-21 | Matsushita Electric Ind Co Ltd | Control of equalizer operation using signal quality thresholds in a receiver |
| WO2007084045A1 (en) * | 2006-01-17 | 2007-07-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and arrangement for reducing power consumption in a mobile communication network |
| CN101171755A (en) * | 2005-03-11 | 2008-04-30 | 高通股份有限公司 | Control of sleep modes in a wireless transceiver |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101171755A (en) * | 2005-03-11 | 2008-04-30 | 高通股份有限公司 | Control of sleep modes in a wireless transceiver |
| GB2430334A (en) * | 2005-09-15 | 2007-03-21 | Matsushita Electric Ind Co Ltd | Control of equalizer operation using signal quality thresholds in a receiver |
| WO2007084045A1 (en) * | 2006-01-17 | 2007-07-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and arrangement for reducing power consumption in a mobile communication network |
| CN1913505A (en) * | 2006-08-10 | 2007-02-14 | 上海交通大学 | Low dissipation joint balance decoder for billi Ethernet |
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