CN102681668B - Low power wireless keyboard - Google Patents
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- CN102681668B CN102681668B CN201210030380.4A CN201210030380A CN102681668B CN 102681668 B CN102681668 B CN 102681668B CN 201210030380 A CN201210030380 A CN 201210030380A CN 102681668 B CN102681668 B CN 102681668B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a wireless keyboard, which comprises a plurality of keys, a transmitter, an antenna and a controller. The plurality of keys includes a set of keys of a first type and a set of keys of a second type. Each of the plurality of first type keys is associated with one of a plurality of predetermined functions. The controller is configured to receive a first signal from the plurality of keys, the first signal indicating that at least one of the plurality of keys has been selected; determining whether a selected at least one of said plurality of keys is one of said first type of keys; and if the selected at least one of the plurality of keys is one of the first type of keys, activating the transmitter to transmit a second signal via the antenna, wherein the second signal carries information of one of the plurality of predetermined functions associated with the selected at least one of the plurality of keys.
Description
Technical field
Outline of the present invention, about wireless transmission, is more particularly about a kind of low-power wireless keyboard.
Background technology
In the past in the several years, wireless short-range transmission system has more been usually used in the device of such as telepilot or Wireless Keyboard.For example, telepilot or Wireless Keyboard comprise one group of key, a key matrix, a controller, a forwarder and usually for transmitting infrared ray (Infrared, " IR ") light emitting diode (the Light emitting diode of signal, " LED "), or one for transmitting the antenna of radio frequency (Radio frequency, " RF ") signal.Such as, Fig. 1 is the calcspar of traditional existing Wireless Keyboard 10.Please refer to Fig. 1, Wireless Keyboard 10 can comprise one group of key (not shown), key matrix 11 and a wireless short-range transmission system.Described wireless short-range transmission system comprises a controller 12, quartz (controlled) oscillator 13, forwarder 14 (TX) and an antenna 15.Described controller 12 is coupled in described key matrix 11, described quartz (controlled) oscillator 13 and described forwarder 14.Quartz (controlled) oscillator 13 is more coupled to described forwarder 14, and described forwarder 14 is more coupled to described antenna 15.Controller 12 can comprise one for generation of a modulator 12-1 of modulating signal.Operationally, described controller 12 can send a signal to key matrix 11 or receive from the signal of described key matrix 11.Such as, controller 12 is configured to scan for key matrix 11, and then therefrom finds out the signal of representative " one or more key is pressed ", and transmits an an enabling signal ACT1 and modulating signal MOD respectively to quartz (controlled) oscillator 13 and forwarder 14.In response in enabling signal ACT1, quartz (controlled) oscillator 13 can produce the reference signal REF that has required frequency, and reference signal REF is recycled to forwarder 14.Forwarder 14 can comprise a phase-lock loop frequency synthesizer (Phase-lock loop, " PLL " frequency synthes izer) 14-1 and power amplifier (Power amplifier, " PA ") 14-2.Forwarder 14 can based on being received from reference signal REF, another enabling signal ACT2 of quartz (controlled) oscillator 13 and being received from the modulating signal MOD of controller 12 and the signal produced after a modulation.Signal after described modulation is then converted to a RF signal and sends out via antenna 15.
Fig. 2 is a sequential chart, described sequential chart describes at explanation controller 12 after key matrix 11 receives the signal of a representative " key is pressed ", the signal produced by quartz (controlled) oscillator 13, phase-lock loop 14-1, power amplifier 14-2 and forwarder 14.First, controller 12 can start quartz (controlled) oscillator 13 to produce the reference signal REF with required frequency.Once quartz (controlled) oscillator 13 is stablized, controller 12 can start phase-lock loop frequency synthesizer 14-1 and power amplifier 14-2.Such as, phase-lock loop frequency synthesizer 14-1 can first be started by an enabling signal ACT2, and the frequency had based on reference signal REF is to produce a carrier signal.Once phase-lock loop frequency synthesizer 14-1 stablizes, receive power amplifier 14-2 from the described carrier signal of phase-lock loop frequency synthesizer 14-1 by coming a modulating signal MOD of self-controller 12 and " unlatching " or " closedown ", and the signal produced thus after a modulation, and convert a RF signal to and transmit via antenna 15.
But the conventional keyboard with the wireless short-range transmission system being similar to above-mentioned operation form may consume a large amount of power.Such as, suppose that information is with 1 kilobit unit (Kilobit per second per second, " kbps ") transmit, and logic high identical with the bit time of logic low level (namely the work period is 50%), and the voltage of logic high and logic low level is respectively 2 volts (V) and 0V, in addition, the electric current of quartz (controlled) oscillator 13, phase-lock loop frequency synthesizer 14-1 and power amplifier 14-2 is driven to be respectively 50 micromicroamperes (μ A), 5 milliamperes (mA) and 5 milliamperes.In addition, wireless short-range is transmitted, under the hypothesis with very low bit error rate (bit error rate), and, compared to the time span of described order, when time span between phase-lock loop frequency synthesizer lockup period is relatively short, the electric current consumed in phase-lock loop frequency synthesizer lockup period can be left in the basket.Therefore, 8000 μ A (i.e. (500 μ A+5mA+5mA) x 0.5+ (500 μ A+5mA) x 0.5) will be roughly for transmitting a logic high unit (1) with the average current of a logic low bit (0).Therefore, described energy efficiency will be roughly every bit 16000 how joule (Nanojoule per bit, " nJ/bit ") (i.e. 8000 μ A x 2V/1kbps).Past has proposed the improvement mode of many economize energy, its by the different phase-lock loop frequency synthesizer of design to produce the phase-lock loop frequency synthesizer (such as, low-power phase-lock loop frequency synthesizer) having more energy efficiency.But within during whole period of just being produced via forwarder 14 by the signal that transmits, phase-lock loop frequency synthesizer 14-1 continues to open.In other words, the phase-lock loop frequency synthesizer 14-1 in this wireless short-range transmission system during generation logical zero and " 1 " in all can consume the energy.Therefore, the energy using the phase-lock loop frequency synthesizer with energy efficiency to save remains limited.Therefore, needing to provide a kind of wireless short-range transmission system, wherein, when phase-lock loop frequency synthesizer is still when operating, by increasing data rate and reducing running time of phase-lock loop frequency synthesizer, and the more energy can be saved.
In addition, as previously mentioned, wireless short-range transmission system is usually used in Wireless Keyboard.Wireless Keyboard generally comprises the keyboard of two profiles formula.Each key system of the first pattern is associated with the function of himself.The key of the first above-mentioned pattern such as comprise usually be arranged to QWERTY pattern word part, function key (F1, F2, etc.), locking key, navigation key (upper and lower, etc. and editing key (delete, input, etc.).The key of the second pattern is modifier key, and it is only pressed Shi Caineng at the key with other simultaneously and has an effect.The key of the second pattern such as comprises Ctrl, Alt and Shift.Such as, in order to input " A ", user first will press " Shift ", then presses " a ".And as shown in Figure 3, in traditional Wireless Keyboard, when pressing " Shift ", keyboard will transmit the key of " Shift ", and when pressing " a ", namely described keyboard transmits the key of " A ".Such as, and at receiver end, computer, usually when receiving the key of " Shift ", can't perform any action being associated with described display because " Shift " this as not having the order of meaning.Described receiver only just can be able to perform an action when receiving the key of " A ", such as, shows character " A " over the display.In other words, the key of " Shift " that transmitted by Wireless Keyboard, it does not provide any significant function.Therefore, need a kind of Wireless Keyboard, it is by the transmission of the omitted data when only there being the key of the second pattern (such as " Shift ") to be pressed separately, and then saves the energy.For the user that need press " Shift " key for a long time for not being familiar with typewriting, the mode of the above-mentioned saving energy is effective especially.Meanwhile, such as, for less device, palmtop device, because more difficultly can find correct text button on the miniature keyboard of palmtop device, the duration of user pins " Shift " key also may be longer.Therefore, the ability of saving the energy in midget plant is even more remarkable and important.
In addition, many conventional keyboard adopt infrared ray (IR) telltale to carry out signal transmission.The magnitude of current (not comprising the electric current operating described circuit) its scope of independent operating light-emitting diodes (leds) (LED) light source is usually 40 to 100mA.In addition, when using the infrared signal device being used for Signal transmissions, because I R signal device needs demand line (line-of-sight) to operate, described Wireless Keyboard needs the appropriate location be placed in relative to described receiver.Therefore need to provide a kind of Wireless Keyboard with environmental protection wireless short-range transmission system, it can with lower power transmission signal, and not need demand line to operate.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of Wireless Keyboard, to solve problem existing in above-mentioned prior art.
In order to achieve the above object, example of the present invention can provide a kind of Wireless Keyboard, and it comprises multiple key, a forwarder, an antenna and a controller.Described multiple key comprises the key of one group of the first pattern and the key of one group of the second pattern.The each of the key of described the first pattern such as grade is all associated with the one of multiple predetermined function.Described controller is coupled in described multiple key and described forwarder.Described controller is configured to receive one first signal from described multiple keyed jointing, and in multiple key described in described first signal designation, at least one is selected; Based in multiple key described in described first signal determining by select at least one whether be one of the key of described the first pattern such as grade; And if be a period of time of key of the first pattern such as described by least one selection in described multiple key, namely start described forwarder to transmit a secondary signal via described antenna.The information of the carrying of described secondary signal and the one in the described multiple predetermined function be associated by least one selection in described multiple key.
Other object of the present invention, benefit and character of innovation can be learnt together with annexed drawings by following detailed example of the present invention.
Accompanying drawing explanation
When and when reading with each alterations, can summary be taken off before better understanding preferable example of the present invention and describe in detail above.For reaching illustration purpose of the present invention, each graphic inner figure is painted with existing genus preferably each example.So should be appreciated that the present invention is not limited to painted accurate row and puts mode and apparatus.Each graphic in:
Fig. 1 is the calcspar of an existing Wireless Keyboard 10;
The sequential chart of the signal produced by quartz (controlled) oscillator 13, phase-lock loop frequency synthesizer 14-1, power amplifier 14-2 and forwarder 14 in the existing Wireless Keyboard that Fig. 2 is key diagram 1;
The sequential chart of the signal that the wireless short-range transmission system of the existing Wireless Keyboard that Fig. 3 is key diagram 1 produces;
Fig. 4 is the calcspar of the wireless short-range transmission system 20 according to the present invention first example;
The sequential chart of the signal that Fig. 5 produces for explanation quartz (controlled) oscillator 13 as shown in Figure 4, phase-lock loop frequency synthesizer 24-1, power amplifier 24-2 and forwarder 24;
Fig. 6 is the calcspar of the wireless short-range transmission system 30 according to the present invention second example;
The sequential chart of the signal that Fig. 7 is explanation quartz (controlled) oscillator 13 as shown in Figure 6, quick lock in phase-lock loop frequency synthesizer 34-1, power amplifier 24-2 and forwarder 34 produce;
Fig. 8 is the calcspar of the Wireless Keyboard 40 according to the present invention the 3rd and the 4th example;
Fig. 9 is for judging the process flow diagram of the method whether forwarder 44 must be activated performed by controller 42 as shown in Figure 8;
Figure 10 illustrates in basis the 4th example of the present invention as shown in Figure 8 by the sequential chart of controller 42 from the key matrix 11 described signal such as grade received and the described signal transmitted by forwarder 44;
Figure 11 illustrates the program for the manufacture of Wireless Keyboard as shown in Figure 8;
Figure 12 is the calcspar of the Wireless Keyboard 50 according to the present invention the 5th example;
Figure 13 is the schematic diagram of the relation illustrated between an example of storer 46 as shown in figure 12 and the information be stored in storer 46 and the key such as described on said keyboard;
Figure 14 illustrates the program for the manufacture of Wireless Keyboard as shown in figure 12.
Description of reference numerals: 10: Wireless Keyboard; 11: key matrix; 12: controller; 12-1: modulator; 13: quartz (controlled) oscillator; 14: forwarder; 14-1: phase-lock loop frequency synthesizer; 14-2: power amplifier; 15: antenna; 20: wireless short-range transmission system; 22: controller; 22-1: modulator; 24: forwarder; 24-1: phase-lock loop; 24-2: power amplifier; 24-3: He Ne laser pin; 24-4: modulation pin; 30: wireless short-range transmission system; 34: forwarder; 34-1: quick lock in phase-lock loop; 40: Wireless Keyboard; 42: controller; 44: forwarder; 46: storer; 50: Wireless Keyboard; 52: controller; T 1: time point; T 2: time point; T 3: time point; 111-115: step.
Embodiment
Now will in detail with reference to the present invention's example shown in the drawings.Allly graphicly represent same or similar part with similar elements symbol as far as possible.Please note described etc. graphic be plot in simplified form, not according to exact scale.
Fig. 4 is the calcspar of wireless short-range transmission system 20 according to a first embodiment of the present invention.Please refer to Fig. 4, wireless short-range transmission system 20 can comprise controller 22, quartz (controlled) oscillator 13, forwarder 24 and an antenna 15, to transmit radio frequency (RF) signal.Controller 22 can comprise a modulator 22-1, and forwarder 24 can comprise a phase-lock loop (PLL) 24-1, a power amplifier (PA) 24-2, a He Ne laser pin 24-3 and one or more modulation pin 24-4.Controller 22 can be a microprocessor or a microcontroller.Modulator 22-1 can comprise an amplitude key and move (Amplitude shift keying, " ASK ") modulator and an on-off keying (On-off keying, " OOK ") modulator.Phase-lock loop frequency synthesizer 24-1 system one Integer N type phase-locked loop, it can be a digital phase locked loop frequency synthesizer or an analog phase-lock loop frequency synthesizer.
According in one example of the present invention, the assembly of said system 20 can be incorporated in a chip, and system 20 can be the form of integrated circuit (Integrated circuit, " IC ").In another example, system 20 can be a part of an IC.In addition, system 20 can be applicable to a man-computer interface device (Human interface device, " HID "), such as, keyboard, joystick and telepilot in keyboard, mobile phone.
Controller 22 is coupled in quartz (controlled) oscillator 13 and forwarder 24.When controller 22 receives a triggering to start quartz (controlled) oscillator 13 or transmit the signal after modulation, controller 22 can utilize an enabling signal ACT1 to start quartz (controlled) oscillator 13, make quartz (controlled) oscillator 13 produce a reference signal REF, and described reference signal REF then will be transferred into forwarder 24 via He Ne laser pin 24-3.Controller 22 can be configured by receive a feedback signal (not shown) from quartz (controlled) oscillator 13 or have a counter (not shown) and counts the mode of a scheduled time slot to judge whether quartz (controlled) oscillator 13 is stablized.The time of described predetermined period is roughly the time required for stable quartz (controlled) oscillator 13, and the described time is decided by experiment.Once controller 22 has judged that quartz (controlled) oscillator 13 is stable, controller 22 can make phase-lock loop frequency synthesizer 24-1 produce a carrier signal based on reference signal REF, and makes described forwarder produce the signal after a modulation according to the method described in referring to Fig. 5.In addition, because controller 22 is a digital circuit, it needs a pulse signal to operate.In an example, controller 22 can comprise an internal oscillator (not shown), for generation of described pulse signal.In addition, controller 22 can receive described pulse signal from external crystal oscillator 13.Moreover, in another embodiment, forwarder 24 can comprise another He Ne laser pin (not shown), to receive a signal of self-controller 22, and the described signal received by transmitting is to phase-lock loop frequency synthesizer 24-1, to finely tune the frequency of the carrier signal produced by phase-lock loop frequency synthesizer 24-1.
Fig. 5 is the sequential chart of explanation signal that quartz (controlled) oscillator 13 as shown in Figure 4, phase-lock loop frequency synthesizer 24-1, power amplifier 24-2 and forwarder 24 produce after controller 22 receives described triggering.First, when time point t 1, described controller starts quartz (controlled) oscillator 13 and produces reference signal REF, and it is transferred into the phase-lock loop frequency synthesizer 24-1 of forwarder 24.Once controller 22 judges that quartz (controlled) oscillator 13 is stablized, controller 22 can transmit the one first modulating signal MOD1 that produced by modulator 22-1 to phase-lock loop frequency synthesizer 24-1 via modulation pin 24-4.Phase-lock loop frequency synthesizer 24-1 is started by the first modulating signal MOD1, and can produce a carrier signal based on the frequency of reference signal REF.Described carrier signal is then transferred into power amplifier 24-2.As shown in Figure 5, phase-lock loop frequency synthesizer 24-1 is activated when time point t2, and stable when time point t 3.The time required for stable phase angle locked loop frequency synthesizer 24-1 is wanted to be roughly 100 microseconds (μ s).The described time can change according to the design of phase-lock loop frequency synthesizer.Controller 22 by receive from phase-lock loop frequency synthesizer 24-1 a feedback signal (not shown) or there is the stable required scheduled time slot (such as 100 μ s) that a counter (not shown) carrys out counting phase locked loop frequency synthesizer 24-1 judge whether phase-lock loop frequency synthesizer 24-1 stablizes.Once controller 22 judges that phase-lock loop frequency synthesizer 24-1 stablizes, power amplifier 24-2 is unlocked in response in the rising edge of such as one second modulating signal MOD2 and falling edge and closes respectively, uses and produces the signal after a modulation based on described carrier signal and the second modulating signal MOD2.Therefore as illustrated in Figure 5, described power amplifier exports and can have the waveform identical with the second modulating signal MOD2.
In an example, phase-lock loop frequency synthesizer 24-and power amplifier 24-21 orders about by the drop edge of the second modulating signal MOD2 and then closes.In another example, phase-lock loop frequency synthesizer 24-1 can be closed after power amplifier 24-2 has been closed.First modulating signal MOD1 and the second modulating signal MOD2 can be frequency but two signals that phase place different identical with amplitude.According in one example of the present invention, forwarder 24 can comprise a phase-delay network (not shown), and it receives the single modulating signal that carrys out self-controller 22, and produces the first modulating signal MOD1 and the second modulating signal MOD2.Such as, described phase-delay network can comprise an impact damper of the delay for the modulating signal received described in causing, and produces the second modulating signal MOD2 thus, the modulating signal received described in the phase place of wherein said second modulating signal MOD2 is different from.According in another example of the present invention, two modulating signal MOD1 and MOD2 are all produced by modulator 22-1, and are sent to phase-lock loop frequency synthesizer 24-1 and power amplifier 24-2 via different modulation pin 24-4.
Phase-lock loop frequency synthesizer 24-1 can comprise a voltage-controlled oscillator (Voltage-controlled oscillator, " VCO ") and a frequency divider, and it is the assembly of most power consumption in phase-lock loop frequency synthesizer 24-1.Therefore, phase-lock loop frequency synthesizer 24-1 is closed by being closed by VCO.Once VCO is closed, described frequency divider also will be closed.In response in the first modulating signal carrying out self-controller 22, described VCO can produce a carrier signal for power amplifier 24-2.Then, the signal after described modulation can be exchanged into a radiofrequency signal, and transmits via the antenna 15 being coupled in forwarder 24.
The phase-lock loop frequency synthesizer 24-1 of the first embodiment of the invention as shown in Figure 4 signal after described modulation just is continued to open (ON) by during whole period of producing, therefore, wireless short-range transmission system 20 according to the present invention first example consumes the considerably less energy, and has more energy efficiency than the wireless short-range transmission system in conventional wireless keyboard.Specifically, can again suppose: transmit with 1kbps that the voltage of information, logic high identical with the bit time of logic low level (namely the work period is for 50%), logic high and logic low level is respectively 2V and 0V, operates quartz (controlled) oscillator 13, the electric current of phase-lock loop frequency synthesizer 24-1 and power amplifier 24-2 is respectively 500 μ A, 5mA and 5mA.In addition, phase-lock loop frequency synthesizer is about 1/10 of the bit time locking time usually haply.Therefore, because the locking time of described phase-lock loop frequency synthesizer is relative to enough short and can be left in the basket bit time span, the electric current that therefore phase-lock loop frequency synthesizer consumed during locking time can be out in the cold.In addition, when the signal will transmitted by forwarder 24 is logic low level, the assembly phase-lock loop frequency synthesizer 24-1 expending the energy most closed by modulating signal MOD1/MOD2, and meanwhile, power amplifier 24-2 is also closed.Or, after power amplifier 24-2 has been closed, close phase-lock loop frequency synthesizer 24-1.Therefore, be only 5500 μ A for transmitting one " 1 " with the average current of one " 0 " bit, it is than the also few 2500 μ A of the electric current operated by the wireless short-range transmission system in above-mentioned conventional wireless keyboard 10.Therefore, the energy efficiency of the present invention first example is approximately 11000nJ/bit, its energy efficiency than the wireless short-range transmission system in above-mentioned conventional wireless keyboard 10 also few 5000nJ/bit.In addition, the signal after system of the present invention uses RF signal to transmit described modulation such as grade, the signal after itself and use IR signal transmit modulation is compared, and has more energy efficiency, and does not need demand line to operate according to Wireless Keyboard of the present invention.Therefore, this skill professional person can understand the present invention first example compared to traditional short distance radio transmission system, only need the less energy to transmit information.
Fig. 6 is the calcspar of wireless short-range transmission system 30 according to a second embodiment of the present invention.The second embodiment shown in Fig. 6 is similar to the first embodiment shown in Fig. 4, and different be in, the second embodiment comprises a forwarder 34; Described forwarder 34 comprises a quick lock in phase-lock loop frequency synthesizer 34-1, and it is different from the phase-lock loop frequency synthesizer 24-1 of the first embodiment.Quick lock in phase-lock loop frequency synthesizer 34-1 has shorter locking time significantly compared to phase-lock loop frequency synthesizer 24-1, and can be a digital quick lock in phase-lock loop frequency synthesizer or an analog quick lock in phase-lock loop frequency synthesizer.Quick lock in phase-lock loop frequency synthesizer 34-1 such as can be an Integer N type phase-locked loop, and it is integrated with additional assemblies to reduce described locking time.Such as, the phase detector (Discriminator aided phase detector, " DAPD ") having proposed to add a digital frequency discriminator auxiliary in an Integer N type phase-locked loop reaches steady state (SS) for speed-up loop.Another example of quick lock in phase-lock loop frequency synthesizer 34-1 can be a fractional N-type phase-locked loop, and it has more complicated structure than described Integer N type phase-locked loop, but its locking time is shorter.When described locking time is shorter, described bit rate may increase, and thus increases the energy efficiency as the wireless short-range transmission system 30 hereafter also as described in reference Fig. 7 thus.The method of operating of described second embodiment is the same as or similar to the method for operating of described first embodiment.
Fig. 7 illustrates after controller 22 receives described triggering, the sequential chart of the signal that quartz (controlled) oscillator 13 as shown in Figure 6, quick lock in phase-lock loop frequency synthesizer 34-1, power amplifier 24-2 and forwarder 34 produce.As shown in Figure 7, the locking time of quick lock in phase-lock loop frequency synthesizer 34-1 is approximately 10 μ s, and it is shorter than the locking time of phase-lock loop frequency synthesizer 24-1 10 times.Therefore, the bit rate of the forwarder 34 of the second embodiment is 10kbps, and it is higher than the bit rate of the forwarder 24 of the first embodiment 10 times.Therefore, according to a second embodiment of the present invention, for transmitting one " 1 " with one " 0 " although the average current of bit is similarly 5500 μ A, but because described bit rate adds 10 times due to shorter locking time, the energy efficiency of second embodiment of the invention is approximately 1100nJ/bit, its more than the energy efficiency of the first embodiment 10 times.In other words, second embodiment of the invention uses less energy to transmit information.
Fig. 8 is the calcspar of Wireless Keyboard 40 according to a third embodiment of the present invention.Described Wireless Keyboard 40 comprises a wireless short-range transmission system of the wireless short-range transmission system being similar to or being same as according to first and second embodiment shown in Fig. 4 and Fig. 6.Wireless Keyboard 40 more comprises a key matrix 11 and is connected to one group of key (not shown) of key matrix 11.Controller 42 is configured to scan for key matrix 11, and then therefrom finds out one or more signal of representative " one or more key is just pressed ".If one or more signal of representative " one or more key is just pressed " receive by controller 42, controller 42 can make described wireless short-range transmission system to produce according to the method for the wireless short-range transmission system of first and second embodiment to be similar to or to be same as and to transmit the signal after modulation.
Fourth embodiment of the invention is the Wireless Keyboard with the assembly identical with Wireless Keyboard 40, and difference to be in, the forwarder 44 of the 4th embodiment can be identical or similar to the one in forwarder 14 as shown in Figure 1, forwarder 24 as shown in Figure 4 or forwarder 34 as shown in Figure 6.The method of operating of the 4th embodiment is identical or similar to the method for operating of the 3rd embodiment, and the controller 42 except the 4th embodiment is configured to start quartz (controlled) oscillator 13 and forwarder 44 in response in the selection signal being received from key matrix 11.Such as, the controller 42 of the 4th matrix example can be configured in order to judge: described one or more signal such as grade received, whether it corresponds to key one or more key wherein of first or the second pattern, and judges thus: whether will start quartz (controlled) oscillator 13 with forwarder 44 with transmission information.Key each key wherein of the first pattern is all associated with the function of himself.The key of the first pattern such as comprise usually be arranged to QWERTY pattern text button, function key (F1, F2, etc.), locking key, navigation key (upper and lower, etc.) and editing key (delete, input etc.).The key of the second pattern is modifier key, and it only can produce effect when being pressed with other key simultaneously.The example of the key of the second pattern comprises Ctrl, Alt and Shift.
If the signal received by described grade corresponds to one of them key of key of the first form, controller 42 by the mode being identical or similar to first and second embodiment to trigger quartz (controlled) oscillator 13 and forwarder 44.But if the signal received by described grade only corresponds to one of them key of the key of the second pattern, controller 42 can not transmit any signal to start quartz (controlled) oscillator 13 or forwarder 44.Relatively, the mode that controller 42 adopts is, will wait for the follow-up signal from key matrix 11.When follow-up signal waited for by controller 42, controller 42 can the power supply of cut out completely itself, or closes wherein some assembly.And in the alternative exemplary of the 4th embodiment, when represent signal that a key has been pressed by controller 42 receive time, first quartz (controlled) oscillator 13 is activated, and in follow-up operation, forwarder 44 is only judged as key one or more key wherein corresponding to first or the second pattern at received described one or more signal such as grade, and time just must be activated.
Fig. 9 is a method flow diagram, show in figure: after digitial controller 42 have received and represents from key matrix 11 one or more signal that one or more key is just being pressed, controller 42 can perform and determine whether must send out signal to start forwarder 44.In step 111, controller 42 scanning key matrix 11.In step 112, controller 42 has determined whether that two or more key is just pressed.If two or more key is just pressed, controller 42 proceeds to step 113 to determine whether to exist a key of the combination corresponding to described two or more keys be pressed such as grade.Such as, " Shift " corresponds to key " A " with the combination of " a ", but " Alt " then may correspond to any key with the combination of " Shift ".If there is a key of the combination corresponding to described two or more keys be pressed such as grade, controller 42 carries out startup quartz (controlled) oscillator 13 and forwarder 44, or when quartz (controlled) oscillator 13 is activated, then only starts forwarder 44, and transmit data via forwarder 44 in step 115.Controller 42 can start quartz (controlled) oscillator 13 and forwarder 44, and according to above-mentioned about any one method in the method such as described of first and second example shown in Fig. 4 to Fig. 7, and the described key of the combination corresponding to described two or more keys be pressed such as grade is transmitted via forwarder 44.On the other hand, if judge to there is not any key corresponding to the combination of two or more keys be pressed described in step 113 middle controller 42, then controller 42 can not start forwarder 44.
Whether in step 112, if controller 42 judges only have a key to be just pressed, then controller 42 proceeds to step 114, with the key judging described pressing as first or one of them key of key of the second pattern.If described in the key that is pressed be the key of the first pattern, then controller 42 can proceed to step 115.Otherwise, if described in the key that is pressed be the key of the second pattern, then controller 42 can not start forwarder 44.Finally, controller 42 can be maintained at idle state or the power supply of cut out own, until receive another signal from key matrix 11.
Figure 10 is the sequential chart of a signal, its to illustrate by controller 42 receive and wait signal and the signal sequence that transmitted by forwarder 44 from the described of key matrix 11.As shown in Figure 10, when the key for the second pattern wherein one one " Shift " key be pressed time, do not have data and transmitted by forwarder 44.Then, when " Shift " key and " a " key are pressed simultaneously, and when judging that the combination of described two keys corresponds to " A ", the key of " A " sent by forwarder 44.In an example, when controller 42 receives the signal of representative " one or more key is just pressed ", controller 42 can transmit the first enabling signal ACT1 to quartz (controlled) oscillator 13, uses and makes quartz (controlled) oscillator 13 produce a reference signal REF.Then, controller 42 can judge which key is pressed by scanning key matrix 11.Such as, if received by controller 42 with " a " key signals from " Shift " key signals of key matrix 11 simultaneously, after quartz (controlled) oscillator 13 is stable, controller 42 can transmit a modulating signal of the key of representative " A " to forwarder 44.
The Circuits System of Wireless Keyboard 40 comprises a printed circuit board (PCB) (Printed circuit board, " PCB ") and an IC chip usually.The manufacture of Wireless Keyboard 40 comprises following steps usually: in wafer factory, manufacture IC on a wafer; Test described wafer; Encapsulate described IC; And described IC is soldered on pcb board.Described pcb board is usually according to the design that should be used for of described pcb board.Figure 11 illustrates the program for the manufacture of the Wireless Keyboard 40 according to the present invention one example.When designing IC, the pin with the first number is designated as the key being associated with the first pattern, and the pin with the second number is designated as the key being associated with the second pattern.Then, according to the design concept of described IC, and carry out manufacturing described IC in wafer factory.Specify based on the pin from wafer factory, client the position design that needs on a printed circuit board (PCB) (PCB) can have a low-power keyboard or the key plate of key.Then, the PCB of described client can manufacture according to this.Therefore, controller 42 in Wireless Keyboard 40 manufactured by said method can judge whether the signal received from key matrix 11 represents the key of the first pattern or the key of the second pattern, and determine whether according to the method for the above-mentioned Fig. 9 of being associated with will via forwarder 44 transmission signal.
Can operate by least one in following two kinds of patterns according to Wireless Keyboard 40 of the present invention: start-up mode, it is for when user is using Wireless Keyboard 40 to transmit information; And standby, it is not for when user is using Wireless Keyboard 40.When Wireless Keyboard 40 operates in start-up mode, controller 42 repeatedly performs the method described in Fig. 9, until have passed through the time of a scheduled period, during this period, controller 42 there is no any signal received from key matrix 11.After have passed through the described scheduled period, Wireless Keyboard 40 is switched to standby mode.When Wireless Keyboard 40 is at standby mode, in described Wireless Keyboard, all described power supplys of assembly that waits can be closed.When it is at standby mode, controller 42 receives the signal from key matrix 11, and controller 42 is then switched to start-up mode and starts the program described in Fig. 9.
Figure 12 is the calcspar of Wireless Keyboard 50 according to a fifth embodiment of the present invention.Wireless Keyboard 50 is similar to Wireless Keyboard 40 according to a fourth embodiment of the present invention, and different be in: Wireless Keyboard 50 more comprises a storer 46, wherein store some information in advance, it is about the described key that waits relative to the Mapping information of the address of described storer, and indicates each key to be the information of the key of the first pattern or the key of the second pattern.Controller 52 is configured to based on one or more signal described in receiving from key matrix 11 and the information that is stored in advance in storer 46, to judge whether received described one or more signal such as grade corresponds to the key of the first pattern or key one or more key wherein of the second pattern.
Figure 13 is the graphic of relation on an example of example memory 46 and the information be stored in storer 46 and keyboard 50 between the key such as described.Each key on keyboard 50 is mapped to the address in storer 46.Content on each address represents one of them key whether key corresponding to described address is the key of the first pattern or the key of the second pattern.Such as, " 0 " can represent the key of the first pattern, and " 1 " can represent the key of the second pattern.
Figure 14 illustrates the program for the manufacture of the Wireless Keyboard 50 according to the present invention one example.When the design phase, decided the position of each key on pcb board by client or application mode, and namely pcb board manufactures according to above-mentioned determined position.Due to the coiling carried out for each key according to the kind of each key when designing the stage of described pcb board, it can thicken with limited due to the structure of the complicated and described coiling complexity of described coiling; Therefore, when designing IC, all keys are designed to transmission signal.Further, according to the design of IC design, and carry out manufacturing described IC in wafer factory.About the position of each key and kind information can On-Wafer Measurement, IC encapsulate during or described IC be soldered on described pcb board after be recorded in the middle of storer 46.By manufacturing described Wireless Keyboard according to above-mentioned program, described keyboard can be customized according to the needs of application mode and client.Such as, the distribution of the keyboard of palmtop device can be different from the distribution of desktop or kneetop computer.Therefore, on each keyboard, the described position of key of waiting can be different.By above-mentioned program, described IC can make all enough transmission signals such as described bond energy such as grade via special design.Once determine client or the application mode of described keyboard, the described non-transmitting characteristic of the key of the second pattern that waits is by during On-Wafer Measurement, IC encapsulation or information be recorded in described storer after described IC is soldered on described pcb board and realize.Therefore, it is possible to provide the Wireless Keyboard with different size and prodigiosin source efficiency.
When representative examples of the present invention is described, this instructions has proposed to operate described method of the present invention and/or the program step as a particular order.But, in a way described method or program can't rely on mentioned herein go out the step of particular order, described method or program should not be limited to the described specific sequence of steps such as described.As this skill professional person can understand, other sequence of steps is also feasible.Therefore, the step of proposed in this manual particular order should not be regarded as the restriction for claim.In addition, about the claim of method of the present invention and/or program should not be limited to the usefulness of step in proposition order, this skill professional person can understand described grade immediately and sequentially can change, and still maintains in spirit of the present invention and scope.
Claims (10)
1. a Wireless Keyboard, is characterized in that, it comprises:
Multiple key, wherein said multiple key comprises one group of the first key and one group of the second key, and each of described the first key multiple is associated with one of multiple predetermined function;
One forwarder, described forwarder comprises a phase-lock loop frequency synthesizer and a power amplifier;
One antenna; And
One controller, it is coupled in described multiple key and described forwarder, and wherein said controller is configured to:
Receive one first signal from described multiple keyed jointing, in multiple key described in described first signal designation, at least one is selected,
Based in multiple key described in described first signal determining by least one selection being whether of described the first key multiple,
If in described multiple key by select at least one for described the first key multiple for the moment, namely described forwarder is started to transmit a secondary signal via described antenna, the information of the carrying of wherein said secondary signal and the one of the described multiple predetermined function be associated by least one selection in described multiple key;
Based in multiple key described in described first signal determining by one that whether at least one selection is in described multiple the second key, and
If be selected as one in described multiple key and for described multiple the second key for the moment, described controller cuts out described power amplifier and stops emission signal to allow described power amplifier, or described controller cuts out described phase-lock loop frequency synthesizer and stops emission signal to allow described phase-lock loop frequency synthesizer.
2. Wireless Keyboard according to claim 1, is characterized in that, described controller is more configured to:
Whether what judge described multiple key is comprised two or more key by least one selection, and
If described multiple key comprised two or more key by least one selection, described controller is more configured to judge whether the combination of described two or more key corresponds to one of described multiple predetermined function, if and the combination of described two or more key corresponds to described multiple predetermined function for the moment, start described forwarder to transmit one the 3rd signal via described antenna, the information of one of described multiple predetermined function that wherein said 3rd signaling bearer is associated with the described combination of two or more keys described.
3. Wireless Keyboard according to claim 2, it is characterized in that, each of described multiple the second key is only just associated with one of described multiple predetermined function when at least another one of each and described multiple key when described multiple the second key is received by described controller.
4. Wireless Keyboard according to claim 3, is characterized in that,
Described group of the first key comprises letter, numeral, symbol, punctuation mark key, inputs, gives up the throne, in hurdle race and caps lock key at least one, and described group of the second key comprises at least one in control, displacement and shift key.
5. Wireless Keyboard according to claim 1, is characterized in that, more comprises:
One storer, it is coupled to described controller, and wherein said storer is configured to store predetermined information, each of the described multiple key of described predetermined information instruction as one of one of described the first key multiple or described multiple the second key, and wherein
Described storer comprises multiple memory location, each memory location is by storer address institute identification, described storer is configured to store predetermined map information, described predetermined map information is associated with described multiple key and described multiple memory location, each of described multiple memory location stores the flag as the first key described or described the second key of corresponding key in the described multiple key of instruction, and
Described controller based on described predetermined information judge in described multiple key by select at least one whether as one of described the first key multiple.
6. Wireless Keyboard according to claim 1, is characterized in that, more comprises:
One first oscillator; And
Wherein,
Described phase-lock loop frequency synthesizer is for receiving the reference signal from described first oscillator and one first modulating signal from described controller, and wherein said phase-lock loop frequency synthesizer is configured to by described first modulating signal unlatching to produce a carrier signal based on described reference signal; And
Described power amplifier is for receiving described carrier signal from described phase-lock loop frequency synthesizer and one second modulating signal, wherein said power amplifier is configured to opened and closed by described second modulating signal, and use and produce described secondary signal based on described carrier signal, wherein said power amplifier is unlocked after described phase-lock loop frequency synthesizer is stable, and described phase-lock loop frequency synthesizer cuts out along with described power amplifier, or close after described power amplifier has been closed.
7. Wireless Keyboard according to claim 6, is characterized in that, described forwarder more comprises a He Ne laser pin and at least one modulation pin;
Described phase-lock loop frequency synthesizer receives described reference frequency signal via described He Ne laser pin from described first oscillator, and receives described first modulating signal via described at least one modulation pin from described controller;
Described power amplifier receives described second modulating signal via described at least one modulation pin from described controller; And
Described controller comprises an amplitude key and moves and one of on-off keying modulator, and for generation of described first modulating signal and described second modulating signal, wherein said first modulating signal is identical with amplitude with the frequency of described second modulating signal, but phase place is different.
8. Wireless Keyboard according to claim 7, is characterized in that, described controller is configured to:
Transmit one the 3rd signal to described first oscillator to start described first oscillator;
Transmit described first modulating signal to described at least one modulation pin, to start described phase-lock loop frequency synthesizer in a period of time of conditions:
(i) when described controller receives representative instruction stable first feedback signal of described first oscillator from described first oscillator, and
(ii) after one first scheduled time slot, described first scheduled time slot is the time of stablizing described first oscillator; And
Described second modulating signal is transmitted to described power amplifier in a period of time of conditions:
(i) when described controller from described phase-lock loop frequency synthesizer receive representative show described phase-lock loop stable second feedback signal time, and
(ii) after one second scheduled time slot, described second scheduled time slot is the time of stablizing described phase-lock loop frequency synthesizer.
9. Wireless Keyboard according to claim 7, is characterized in that, more comprises a key array, wherein
Described controller is configured to receive and indicates at least one key of described Wireless Keyboard via described first signal that described key array is pressed from described multiple key.
10. Wireless Keyboard according to claim 6, is characterized in that,
Described controller comprises one of a microprocessor and a microcontroller;
Described phase-lock loop frequency synthesizer one of to comprise in a digital phase locked loop frequency synthesizer, an analog phase-lock loop frequency synthesizer, a digital quick lock in phase-lock loop and an analog quick lock in phase-lock loop, wherein said phase-lock loop frequency synthesizer more comprises one second oscillator, and described phase-lock loop frequency synthesizer is unlocked by opening or cut out described second oscillator or cuts out; And
Signal after described modulation converts a radiofrequency signal to and transmits.
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| Application Number | Priority Date | Filing Date | Title |
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| TW100108123 | 2011-03-10 | ||
| TW100108123A TWI520167B (en) | 2011-03-10 | 2011-03-10 | Low power wireless keyboard |
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| CN102681668A CN102681668A (en) | 2012-09-19 |
| CN102681668B true CN102681668B (en) | 2015-06-17 |
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| TW (1) | TWI520167B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI547832B (en) * | 2015-07-06 | 2016-09-01 | Dexin Corp | An input device with adaptive adjustment and its adjustment method |
| WO2017183888A2 (en) | 2016-04-19 | 2017-10-26 | Samsung Electronics Co., Ltd. | Positioning method and apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1125334A (en) * | 1994-12-19 | 1996-06-26 | 巨太国际股份有限公司 | Wireless keyboard system of computer |
| CN1185603A (en) * | 1996-12-18 | 1998-06-24 | 王林 | Method for inputting Chinese punctuation and mark by keyboard |
| US5854621A (en) * | 1991-03-19 | 1998-12-29 | Logitech, Inc. | Wireless mouse |
| US7151915B2 (en) * | 2001-09-26 | 2006-12-19 | Nokia Corporation | Dual mode voltage controlled oscillator having controllable bias modes and power consumption |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070253468A1 (en) * | 2006-05-01 | 2007-11-01 | Micrel Inc. | Spread Spectrum ASK/OOK Transmitter |
| US20080195762A1 (en) * | 2007-02-13 | 2008-08-14 | Wood Michael C | Multifunction data entry device and method |
-
2011
- 2011-03-10 TW TW100108123A patent/TWI520167B/en active
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2012
- 2012-02-10 CN CN201210030380.4A patent/CN102681668B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5854621A (en) * | 1991-03-19 | 1998-12-29 | Logitech, Inc. | Wireless mouse |
| CN1125334A (en) * | 1994-12-19 | 1996-06-26 | 巨太国际股份有限公司 | Wireless keyboard system of computer |
| CN1185603A (en) * | 1996-12-18 | 1998-06-24 | 王林 | Method for inputting Chinese punctuation and mark by keyboard |
| US7151915B2 (en) * | 2001-09-26 | 2006-12-19 | Nokia Corporation | Dual mode voltage controlled oscillator having controllable bias modes and power consumption |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201237905A (en) | 2012-09-16 |
| TWI520167B (en) | 2016-02-01 |
| CN102681668A (en) | 2012-09-19 |
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