CN102591730B - Cover testing circuit, cover-lifting type electronic device and cover detection method - Google Patents
Cover testing circuit, cover-lifting type electronic device and cover detection method Download PDFInfo
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- CN102591730B CN102591730B CN201110026347.XA CN201110026347A CN102591730B CN 102591730 B CN102591730 B CN 102591730B CN 201110026347 A CN201110026347 A CN 201110026347A CN 102591730 B CN102591730 B CN 102591730B
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Abstract
Whether one covers testing circuit, is applicable to a cover-lifting type electronic device, cover mutually with the first noumenon and the second body that detect cover-lifting type electronic device.Cover testing circuit and comprise a control module, a light signal producing component, a light signal receiving element and a discriminating element.Light signal producing component and light signal receiving element are arranged at the first noumenon and the second body respectively.Control module produces enable signal, and light signal producing component receives enable signal and produces optical coding signals.Light signal receiving element receives external optical signals and is converted to a measured signal; Discriminating element differentiates that measured signal is whether in the error tolerance of optical coding signals, and after differentiation measured signal is in the error tolerance of this optical coding signals, sends one covers signal to cover-lifting type electronic device.Through the content differentiating measured signal, extraneous light is avoided to disturb the running covering testing circuit.
Description
Technical field
The present invention be with cover-lifting type electronic device cover detect relevant, particularly about covering testing circuit and covering detection method based on optical coding signals.
Background technology
Cover-lifting type electronic device comprises body and display part.Body is arranged the input media such as keyboard, Trackpad, display part is arranged a display unit.Input media and display unit are divided on different structure, can avoid the undersized of input media and display unit.Meanwhile, in time not using cover-lifting type electronic device, display part can be covered on again on body, reduces the space shared by cover-lifting type electronic device.
When display part is covered on body, cover-lifting type electronic device must perform one and cover operation, such as perform standby, shut down or enter energy saver mode (as close display unit) etc.Start aforementioned cover cooperation industry in a manual manner in order to avoid user forgets, be through different testing mechanisms in prior art and come detection display portion and whether be covered on body, perform cover operation automatically to trigger cover-lifting type electronic device.
In prior art, one of common testing mechanism arranges mechanical open about between body and display part; When display part is covered on body, display part can touch this mechanical switch, and send cover signal with trigger cover-lifting type electronic device perform cover operation.But the mechanical switch life-span is relatively short, operable number of times is very few.
Another kind of testing mechanism arranges magnet and magnetic reed switch respectively in body and display part; When display part is covered on body, magnet can touch magnetic reed switch, and send cover signal with trigger cover-lifting type electronic device perform cover operation.Magnet and magnetic reed switch can be hidden in body and display part and not need to expose, but magnetic reed switch is easily subject to external magnetic affects and misoperation.
For the shortcoming of the combination of mechanical switch or magnet and magnetic reed switch, TaiWan, China new patent TW566778 Patent Case and US Patent No. 7,196, No. 316 Patent Cases propose different optical detection mechanism respectively.No. TW566778 and US7, the method of 196, No. 316 arranges light signal producing component and light signal receiving element at body and display part respectively, whether utilization differentiation light signal receiving element can receive the light that light signal producing component sends, and differentiates whether display part is covered on body.U.S. Patent Publication US20080076491 publication is then the setting of omitting light signal producing component, changes the backlight differentiating whether light signal receiving element can receive display unit and send into.
No. TW566778, US7, the mechanism of 196, No. 316 and No. US20080076491, also exists and is easily subject to the interference of extraneous light, produce the problem of misoperation.Therefore, how to improve existing testing mechanism, become an important technology problem.
Summary of the invention
In known technology, utilize optical detection mechanism to differentiate and the technological means whether cover-lifting type electronic device covers there is the problem being easily subject to the interference of extraneous light.In view of foregoing problems, the present invention proposes one and covers testing circuit and one covers detection method, and extraneous light can be avoided to disturb.
The present invention proposes one and covers testing circuit, is applicable to a cover-lifting type electronic device.Cover-lifting type electronic device has a first noumenon and one second body, and the second body is articulated in the first noumenon, and selectively rotates relative to the first noumenon to be covered on the first noumenon.
Cover testing circuit and comprise a control module, a light signal producing component and a light signal receiving element.Control module produces an enable signal; Light signal producing component is arranged at the first noumenon, receives enable signal and produces optical coding signals.Light signal receiving element is arranged at this second body, receives external optical signals and is converted to a measured signal.Discriminating element obtains the measured signal of light signal receiving element, and differentiates that measured signal is whether in the error tolerance of optical coding signals.Wherein, discriminating element sends one and covers signal to cover-lifting type electronic device after differentiation measured signal is in the error tolerance of optical coding signals, make cover-lifting type electronic device perform standby, shutting down or entering energy saver mode etc. covers operation.
The present invention also proposes a kind of cover-lifting type electronic device, and have a first noumenon and one second body, the second body is articulated in the first noumenon, and selectively rotates relative to the first noumenon to be covered on the first noumenon.
Cover-lifting type electronic device more comprises a host electronic circuit, a control module, a light signal producing component, a light signal receiving element and a discriminating element.
Host electronic circuit is in order to perform a predetermined function, and execution one covers operation after reception one covers signal.Control module, it produces an enable signal; Light signal producing component is arranged at the first noumenon, receives enable signal and produces optical coding signals.Light signal receiving element is arranged at the second body, receives external optical signals and is converted to a measured signal.Discriminating element obtains the measured signal of this light signal receiving element, and differentiate that measured signal is whether in the error tolerance of optical coding signals, and send and cover signal to host electronic circuit after differentiation measured signal is in the error tolerance of optical coding signals, make cover-lifting type electronic device perform standby, shutting down or entering energy saver mode etc. covers operation.
The present invention more proposes one and covers detection method, is applicable to a cover-lifting type electronic device, comprises the following step:
A () makes a light signal producing component continue to produce optical coding signals; Wherein light signal producing component is arranged at the first noumenon, and optical coding signals has an error tolerance.
B () with a light signal receiving element receiving optical signals, and produces measured signal; Wherein, light signal receiving element is arranged at the second body.
C () differentiates whether measured signal drops within error tolerance.
If d () measured signal drops within error tolerance, send one and cover signal to cover-lifting type electronic device.
Effect of the present invention is, whether the present invention does not receive light signal for discrimination standard with light signal receiving element merely, but whether the light signal received by differentiating further is sent optical coding signals, thus external optical signals is avoided to cause the problem of erroneous judgement to occur.Be with compared to prior art, the present invention proposes cover testing circuit and cover detection method has relatively high reliability.
Accompanying drawing explanation
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated, wherein:
Fig. 1 is the circuit block diagram covering testing circuit of the present invention.
Fig. 2 is the stereographic map that application covers the cover-lifting type electronic device of testing circuit.
Fig. 3 is the diagrammatic cross-section that application covers the cover-lifting type electronic device of testing circuit.
Fig. 4 A and Fig. 4 B is the circuit block diagram of cover-lifting type electronic device.
Fig. 5 is the process block diagram covering detection method of the embodiment of the present invention.
Fig. 6 is the stereographic map of cover-lifting type electronic device and pick-up unit.
Fig. 7 is the process block diagram utilizing pick-up unit to receive hardware information.
Main element symbol description:
100 cover testing circuit
110 control modules
120 light signal producing components
130 light signal receiving elements
140 discriminating elements
700 pick-up units
710 data process bodies
720 optical auxiliary signal receiving elements
800 host electronic circuit
810 central processing units
820 system chipset
830 embedded controllers
840 system storages
850 Storage Medias
860 display interfaces
880 ROM (read-only memory)
900 cover-lifting type electronic devices
910 the first noumenons
911 upper surfaces
912 input blocks
920 second bodies
921 leading flanks
922 display units
Embodiment
Refer to shown in Fig. 1, Fig. 2 and Fig. 3, its one described by the embodiment of the present invention covers testing circuit 100, is applicable to a cover-lifting type electronic device 900.Cover-lifting type electronic device 900 shown in Fig. 2 and Fig. 3 is a notebook computer, but specific embodiments of the invention are not as limit.Cover-lifting type electronic device 900 can be but be not limited to notebook computer, display, panel computer, mobile phone, palmtop computer, personal digital assistant etc.
As shown in Figures 2 and 3, cover-lifting type electronic device 900 has the first noumenon 910 and one second body 920; Second body 920 is articulated in the first noumenon 910, and selectively rotates relative to the first noumenon 910, to be covered on the first noumenon 910, or and the first noumenon 910 between in an angle.The specific embodiment of described the first noumenon 910 and the second body 920 is a main frame portion and a upper cover part of notebook computer, and the upper surface 911 of wherein main frame portion (the first noumenon 910) arranges input block 912, such as keyboard and Trackpad; The leading flank 921 of upper cover part (the second body 920) arranges a display unit 922; When second body 920 is covered on the first noumenon 910, leading flank 921 is towards upper surface 911.Aforesaid input block 912 and display unit 922 can be replaced mutually between the first noumenon 910 and the second body 920; Or input block 912 can omit, display unit 922 is only set in upper surface 911 or leading flank 921.
Consult shown in Fig. 1, cover testing circuit 100 and comprise control module 110, light signal producing component 120, light signal receiving element 130 and a discriminating element 140.
Control module 110 can be microcontroller, embedded controller (EmbeddedController).In the present invention one preferred embodiment, control module 110 is an embedded controller, in order to the keyboard controller (Keyboardcontroller, KBC) as cover-lifting type electronic device 900; Through the design of firmware, control module 110, except possessing the original function of keyboard controller, further possesses the function covering the control module 110 of testing circuit 100 of the present invention.Control module 110 is in order to produce enable signal; And setting one recognition coding in control module 110, and producing enable signal according to recognition coding, the optical coding signals that light signal producing component 120 is produced can carry recognition coding.
Light signal producing component 120 can be the small light emitting source launching invisible light, such as infrared light-emitting diode; But light signal producing component 120 also can be the small light emitting source launching visible ray, as visible light emitting diode.In order to avoid the running of light signal producing component 120 affects the vision of user in practice, if when using visible ray, by code rate modulation to the speed that human eye vision can be allowed to persist, reach outward appearance and beautify with the function of decoration and have the identical object of this case.Light signal producing component 120 is to launch invisible light person for the best.Light signal producing component 120 is electrically coupled to control module 110, receives enable signal and produces an optical coding signals.Control module 110 produces enable signal according to recognition coding, the optical coding signals that light signal producing component 120 is produced is in modes such as flicker, peak change, carry aforesaid recognition coding, make optical coding signals and arround there is otherness between the light signal that produces of light source.
Light signal receiving element 130 is in order to receive external optical signals and to be converted to measured signal.Wherein, the spectrum of the optical coding signals that light signal producing component 120 sends, drop in spectral range that light signal receiving element 130 can receive, so as to distinguish further through spectral range optical coding signals and arround difference between the light signal that produces of light source.
Discriminating element 140 is in order to obtain the measured signal of light signal receiving element 130, and the difference of foundation measured signal and optical coding signals, differentiate whether measured signal drops in the error tolerance of optical coding signals, and after differentiation measured signal is in the error tolerance of optical coding signals, sends one and cover the host electronic circuit 800 of signal to cover-lifting type electronic device 900.
Discriminating element 140 differentiates that the mode of the difference of measured signal and optical coding signals is: discriminating element 140 receives measured signal, according to the change (flicker, peak change etc.) of measured signal, changes measured signal into a feedback and encodes; The difference of the discriminating element 140 then recognition coding of comparison feedback coding and optical coding signals, to differentiate whether measured signal drops in the error tolerance of optical coding signals.
Due to the transmission of light signal, arround being easily subject to, light source disturbed; Even if light signal receiving element 130 directly receives optical coding signals and is converted to measured signal, feedback encoding and identification coding between still may exist part fragment delivery mistake or or transmits unsuccessfully, and make feedback encoding and identification coding between there is difference.Therefore, the embodiment of the present invention sets error tolerance for optical coding signals; As long as the difference between feedback encoding and identification coding is not too large, measured signal is still dropped in error tolerance, just assert that light signal receiving element 130 directly receives optical coding signals and is converted to measured signal.
Discriminating element 140 can be a microcontroller, an embedded controller or a keyboard controller, through the setting of firmware, makes it reach and differentiates whether measured signal drops on the function in the error tolerance of optical coding signals.Control module 110 and discriminating element 140 can pass through single element (microcontroller, an embedded controller or a keyboard controller) simultaneously or sequentially perform different procedure code fragments and reached, that is in specific embodiments of the invention, control module 110 and discriminating element 140 can be combined into single element.In cover-lifting type electronic device 900, discriminating element 140 more can be central processing unit, is electrically connected on control module 110 by bus; Central processing unit, after Storage Media is loaded into a procedure code and performs, can realize the function of discriminating element 140.
Consult shown in Fig. 2 and Fig. 3, light signal receiving element 130 is arranged at the upper surface 911 of the first noumenon 910, and light signal producing component 120 is arranged at the leading flank 921 of the second body 920; Have angle between the first noumenon 910 and the second body 920, the optical coding signals that this optical signal producing component 120 produces also cannot arrive light signal receiving element 130; Instead, the external optical signals received by light signal receiving element 130, be from arround light source institute producer.When the second body 920 is covered on the first noumenon 910, light signal receiving element 130 is positioned in the projected path of optical coding signals, and receive optical coding signals and produce measured signal, light signal receiving element 130 and the light signal producing component 120 of placement one group is not limited in the upper surface 911 of the first noumenon 910 and the leading flank 921 of the second body 920.
Light signal receiving element 130 receives the external optical signals in the spectral range that can receive constantly, and produces measured signal to discriminating element 140.Discriminating element 140 then changes measured signal into feedback coding, and whether the difference comparing feedback coding and recognition coding drops on the error tolerance of optical coding signals.If the difference of feedback coding and recognition coding drops on the error tolerance of optical coding signals, representing the external optical signals that light signal receiving element 130 receives is the optical coding signals that light signal producing component 120 sends.
As shown in Figure 2, when having angle between the second body 920 and the first noumenon 910, light signal receiving element 130 is not positioned at the projected path of optical coding signals, therefore, light signal receiving element 130 does not receive any light signal (spectral range of external optical signals all drops on outside the spectral range that light signal receiving element 130 can receive), and cannot produce measured signal.Or, light signal receiving element 130 receives an external optical signals, and after producing measured signal, discriminating element 140 differentiates the difference that feedback encoding and identification is encoded, outside the error tolerance dropping on optical coding signals, and differentiate that the light signal that light signal receiving element 130 receives is not the optical coding signals that light signal producing component 120 sends, therefore discriminating element 140 does not carry out start.
As shown in Figure 3, when the second body 920 is covered on the first noumenon 910, light signal receiving element 130 is positioned at the projected path of optical coding signals, and receives optical coding signals.Light signal receiving element 130 produces measured signal, and is sent to control module 110, makes control module 110 produce feedback coding.Because optical coding signals carries recognition coding, the feedback coding produced according to measured signal will be identical with recognition coding, or the difference between recognition coding will drop in the error tolerance of optical coding signals by feedback coding.Now, discriminating element 140 differentiates that feedback coding is same as recognition coding, and send one and cover the host electronic circuit 800 of signal to cover-lifting type electronic device 900, make cover-lifting type electronic device 900 start to perform standby, shut down or enter the corresponding operations covering action such as energy saver mode (as closed display unit).
In the present invention, whether control module 110 does not receive optical coding signals for discrimination standard with light signal receiving element 130 merely, but receive external optical signals constantly, differentiate whether external optical signals has recognition coding, just send after confirming the existence of recognition coding and cover signal; Therefore, the light signal that the present invention avoids context light source to produce causes discriminating element 140 to judge the second body 920 by accident and is covered on the first noumenon 910.
Consult shown in Fig. 4 A and Fig. 4 B, be respectively second embodiment of the invention and the cover-lifting type electronic device 900 described by the 3rd embodiment, comprise as described for the first embodiment cover testing circuit 100.Cover-lifting type electronic device 900 can be but is not limited to notebook computer, display, panel computer, mobile phone, palmtop computer, personal digital assistant.As shown in Figures 2 and 3, cover-lifting type electronic device 900 has the first noumenon 910 and one second body 920; And cover-lifting type electronic device 900 more comprises host electronic circuit 800 and covers testing circuit 100, be arranged at respectively the first noumenon 910, second body 920, or more combination in.Host electronic circuit 800, according to the kind of cover-lifting type electronic device 900, performs a predetermined function, and can after reception one covers signal, performs and covers operation, such as standby, shut down or enter the operations such as energy saver mode.
As shown in Figure 4 A, the cover-lifting type electronic device 900 of the second embodiment is for a notebook computer, and this host electronic circuit 800 at least comprises central processing unit 810, system chipset 820, system storage 840, Storage Media 850, display interface 860 and a ROM (read-only memory) 880.Generally speaking, system chipset 820 comprises north bridge chips and South Bridge chip, provides the data bus of different size respectively; The present embodiment north bridge chips and South Bridge chip is reduced to triangular web chipset 820 be described.Central processing unit 810, system storage 840, Storage Media 850, display interface 860 and control module 110 are all electrically coupled to system chipset 820.The details of aforementioned host electronic circuit 800 is for notebook computer, and is not used to the enforcement limiting host electronic circuit 800 of the present invention; That is cover-lifting type electronic device 900 is not limited with notebook computer, being familiar with the technology field person according to the difference of cover-lifting type electronic device 900, and can revise this host electronic circuit 800.
Control module 110 is a microcontroller, an embedded controller or a keyboard controller in second embodiment of the invention, be electrically coupled to system chipset 820, and through the setting of firmware, make aforesaid microcontroller, embedded controller or keyboard controller and set up except the function of communication except possessing with input block 912, further implement the function of this control module 110 through program code.
After cover-lifting type electronic device 900 starts, the every surrounding hardware of control module 110 initialization, and central processing unit 810 reads Basic Input or Output System (BIOS) (BIOS) in ROM (read-only memory) 880 and KBCBIOS by system chipset 820 and control module 110, start operating system, driver and the application program in Storage Media 850 and host electronic circuit 800 is operated.Then host electronic circuit 800 enters general running status, now, control module 110 starts to drive light signal producing component 120 to produce optical coding signals with enable signal, and the measured signal that light signal receiving element 130 is produced is sent to central processing unit 810 through control module 110, system chipset 820.
Central processing unit 810, after Storage Media 850 is loaded into a procedure code and performs, realizes the function of discriminating element 140.After discriminating element 140 obtains measured signal, and differentiate that measured signal is whether in the error tolerance of optical coding signals, and after differentiation measured signal is in the error tolerance of optical coding signals, sends one covers signal to host electronic circuit.Then, central processing unit 810 start to perform standby, shut down or enter the corresponding operations covering action such as energy saver mode (as closed display unit).
Consult shown in Fig. 4 B, the cover-lifting type electronic device 900 of the 3rd embodiment is roughly identical with the second embodiment, its Main Differences is, control module 110 and discriminating element 140 are through an embedded controller 830 simultaneously or sequentially perform different procedure code fragments and reached.Aforementioned, embedded controller 830 is replaceable is a microcontroller or a keyboard controller.
Consult shown in Fig. 5, cover detection method, be applicable to cover-lifting type electronic device 900 for the embodiment of the present invention further describes one, cover-lifting type electronic device 900 has the first noumenon 910 and one second body 920.
The detection method that covers of the present invention performs under open state in cover-lifting type electronic device 900.First, change with a control module 110 and correspond to a recognition coding of this cover-lifting type electronic device 900 into an enable signal, as shown at step 110.
Control module 110 continues to transmit enable signal to light signal producing component 120, drives light signal producing component 120 to continue to produce optical coding signals, and make optical coding signals carry recognition coding, as step 120 with enable signal.Optical coding signals has the error tolerance of a correspondence.
Then, with light signal receiving element 130 receiving optical signals, and a measured signal is produced, as indicated by a step 131.
Whether receive external optical signals with a discriminating element 140 lasting differentiation light signal receiving element 130 and produce measured signal, as step 132.If control module 110 differentiates do not produce measured signal, then control module 110 re-executes step 120, continues to transmit enable signal to light signal producing component 120, makes light signal producing component 120 continue to send optical coding signals.
If discriminating element 140 differentiates that light signal receiving element 130 produces measured signal, then control module 110 is changed measured signal and is encoded into a feedback, as shown in step 140.
Discriminating element 140 is according to the difference of feedback coding and recognition coding, differentiate whether measured signal drops in the error tolerance of optical coding signals, to differentiate whether the light signal that light signal receiving element 130 receives is the optical coding signals that light signal producing component 120 sends, as shown in step 150.
If in step 150, discriminating element 140 differentiates that measured signal drops on beyond the error tolerance of optical coding signals, that is the light signal that light signal receiving element 130 receives is not the optical coding signals that light signal producing component 120 sends, control module 110 re-executes step 120, continue to transmit enable signal to light signal producing component 120, make light signal producing component 120 continue to send optical coding signals.
If in step 150, discriminating element 140 differentiates that measured signal drops within this error tolerance, that is the light signal that light signal receiving element 130 receives is the optical coding signals that light signal producing component 120 sends, then discriminating element 140 sends one and covers signal to cover-lifting type electronic device, as shown in step 160.
After the electronic circuit of cover-lifting type electronic device 900 receives and covers signal, make cover-lifting type electronic device 900 start to perform standby, shut down or enter the corresponding operations covered such as energy saver mode (as closed display unit), as indicated at step 170.
Cover in detection method in of the present invention, the light that light signal producing component 120 projects, additional identification is encoded and becomes optical coding signals.Therefore, whether the control module 110 feedback coding that then tranmittance is entrained is to measured signal same as recognition coding, judge light signal receiving element 130 whether receive institute recipient be optical coding signals really, thus judge whether cover-lifting type electronic device 900 covers.Be encoded in the mode of optical coding signals through additional identification, can effectively avoid the interference of extraneous light and cause misoperation.
Of the present invention cover detection method except detect cover-lifting type electronic device 900 cover except state, also can be used for carrying out data transmission.
Refer to shown in Fig. 6, because light signal producing component 120 continues the optical coding signals of generation, therefore the hardware information of cover-lifting type electronic device 900 can be added in optical coding signals, such as hardware state, hardware number etc., send through light signal producing component 120, to receive through a pick-up unit 700.
Consult shown in Fig. 6 and Fig. 7, pick-up unit 700 has data process body 710 and an optical auxiliary signal receiving element 720, optical auxiliary signal receiving element 720 is through a transmission interface 730, and such as UART (UniversalAsynchronousReceiver/Transmitter) is connected to data process body 710.
After pick-up unit 700 is started shooting, data process body 710 continues to differentiate whether optical auxiliary signal receiving element 720 receives light signal, as indicated in step 210.After optical auxiliary signal receiving element 720 receiving optical signals, change this light signal into measured signal, transfer to data process body 710.
If data process body 710 differentiates do not produce measured signal, continue to differentiate whether optical auxiliary signal receiving element 720 receives light signal.
If data process body 710 differentiates that optical auxiliary signal receiving element 720 produces measured signal, then data process body 710 is changed measured signal and is encoded into a feedback, as shown at step 220.
Data process body 710 analyzes feedback coding, differentiates that whether external optical signal is the optical coding signals that cover-lifting type electronic device 900 sends, as shown in step 230.
If data process body 710 differentiates that light signal is not the optical coding signals that cover-lifting type electronic device 900 sends, then data process body 710 re-executes step 210.
If data process body 710 differentiates the optical coding signals that light signal sends for cover-lifting type electronic device 900, then data process body 710 performs back-end processing operation, as illustrated in step 240, such as store the hardware information of cover-lifting type electronic device 900, maybe this hardware information is externally transmitted further.
In the light that the present invention projects in light signal producing component 120, extra additional identification coding and become optical coding signals.This optical coding signals can avoid detecting cover-lifting type electronic device 900 cover state time, be subject to the interference of other light signals and cause by mistake start; Optical coding signals also can add other information further more simultaneously, and carries out data transmission.
Although the present invention discloses as above with preferred embodiment; so itself and be not used to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when doing a little amendment and perfect, therefore protection scope of the present invention is when being as the criterion of defining with claims.
Claims (19)
1. one kind covers testing circuit, be applicable to a cover-lifting type electronic device, wherein this cover-lifting type electronic device has a first noumenon and one second body, and this second body is articulated in this first noumenon, and selectively rotates relative to this first noumenon to be covered on this first noumenon; This covers testing circuit and comprises:
One control module, setting one recognition coding in this control module, and produce an enable signal according to this recognition coding;
One light signal producing component, is arranged at this first noumenon, receives this enable signal and produces the optical coding signals carrying this recognition coding;
One light signal receiving element, be arranged at this second body, receive external optical signals and be converted to a measured signal, and change this measured signal and encode into a feedback, wherein this light signal receiving element has a spectral range that can receive, this spectral range can distinguish this optical coding signals and arround the light signal that produces of light source, and the spectrum of this optical coding signals drops in this spectral range;
One discriminating element, obtain the measured signal of this light signal receiving element, and compare this feedback coding and this recognition coding, to differentiate this measured signal whether in the error tolerance of this optical coding signals, and after this measured signal of differentiation is in the error tolerance of this optical coding signals, sends one covers signal to this cover-lifting type electronic device.
2. cover testing circuit as claimed in claim 1, it is characterized in that, when this second body is covered on this first noumenon, this light signal receiving element is positioned in the projected path of optical coding signals.
3. cover testing circuit as claimed in claim 1, it is characterized in that, this control module is a microcontroller, an embedded controller or a keyboard controller.
4. cover testing circuit as claimed in claim 1, it is characterized in that, this discriminating element is a microcontroller of a host electronic circuit of this cover-lifting type electronic device, an embedded controller, a keyboard controller or a central processing unit.
5. cover testing circuit as claimed in claim 1, it is characterized in that, this light signal receiving element is arranged at the upper surface of this first noumenon, and this light signal producing component is arranged at the leading flank of this second body, when this second body is covered on this first noumenon, this leading flank is towards this upper surface.
6. a cover-lifting type electronic device, have a first noumenon and one second body, this second body is articulated in this first noumenon, and selectively rotates relative to this first noumenon to be covered on this first noumenon; This cover-lifting type electronic device more comprises:
One host electronic circuit, in order to perform a predetermined function, and execution one covers operation after reception one covers signal;
One control module, setting one recognition coding in this control module, and produce an enable signal according to this recognition coding;
One light signal producing component, is arranged at this first noumenon, receives this enable signal and produces the optical coding signals carrying this recognition coding;
One light signal receiving element, be arranged at this second body, receive external optical signals and be converted to a measured signal, and change this measured signal and encode into a feedback, wherein this light signal receiving element has a spectral range that can receive, this spectral range can distinguish this optical coding signals and arround the light signal that produces of light source, and the spectrum of this optical coding signals drops in this spectral range;
One discriminating element, obtain the measured signal of this light signal receiving element, and compare this feedback coding and this recognition coding to differentiate this measured signal whether in the error tolerance of this optical coding signals, and after this measured signal of differentiation is in the error tolerance of this optical coding signals, sends this covers signal to this host electronic circuit.
7. cover-lifting type electronic device as claimed in claim 6, is characterized in that, more comprise:
One host electronic circuit, at least comprises a central processing unit, a system chipset, a system storage, a Storage Media and a display interface; Wherein this central processing unit, this system storage, this Storage Media and this display interface are all electrically coupled to this system chipset.
8. cover-lifting type electronic device as claimed in claim 6, it is characterized in that, when this second body is covered on this first noumenon, this light signal receiving element is positioned in the projected path of optical coding signals.
9. cover-lifting type electronic device as claimed in claim 7, is characterized in that, this control module is a microcontroller of this host electronic circuit, an embedded controller or a keyboard controller, is coupled in this central processing unit through this system chipset.
10. cover-lifting type electronic device as claimed in claim 7, is characterized in that, this discriminating element is a microcontroller of this host electronic circuit, an embedded controller or a keyboard controller, is coupled in this central processing unit through this system chipset.
11. cover-lifting type electronic devices as claimed in claim 7, is characterized in that, this discriminating element performs a procedure code for this central processing unit.
12. cover-lifting type electronic devices as claimed in claim 6, it is characterized in that, this light signal receiving element is arranged at the upper surface of this first noumenon, and this light signal producing component is arranged at the leading flank of this second body, when this second body is covered on this first noumenon, this leading flank is towards this upper surface.
13. cover-lifting type electronic devices as claimed in claim 6, it is characterized in that, this cover-lifting type electronic device is notebook computer, display, panel computer, mobile phone, palmtop computer or personal digital assistant.
14. 1 kinds cover detection method, be applicable to a cover-lifting type electronic device, it is characterized in that, this cover-lifting type electronic device has a first noumenon and one second body, this second body is articulated in this first noumenon, and selectively rotates relative to this first noumenon to be covered on this first noumenon; The method comprises the following step:
A () makes a light signal producing component continue to produce optical coding signals; Wherein this light signal producing component is arranged at this first noumenon, and this optical coding signals has an error tolerance;
B () with a light signal receiving element receiving optical signals, and produces a measured signal; Wherein, this light signal receiving element is arranged at this second body, wherein this light signal receiving element has a spectral range that can receive, this spectral range can distinguish this optical coding signals and arround the light signal that produces of light source, and the spectrum of this optical coding signals drops in this spectral range;
C () differentiates whether this measured signal drops within this error tolerance; And
If d () this measured signal drops within this error tolerance, send one and cover signal to this cover-lifting type electronic device,
Wherein step (a) more comprises:
Change a recognition coding into an enable signal; And
Drive this light signal producing component to produce this optical coding signals with this enable signal, and make this optical coding signals carry this recognition coding;
This step (c) more comprises:
Change this measured signal to encode into a feedback; And
According to this feedback coding and the difference of this recognition coding, differentiate whether this measured signal drops within this error tolerance.
15. cover detection method as claimed in claim 14, it is characterized in that, step (a) more comprises:
Change a recognition coding into an enable signal; And
Drive this light signal producing component to produce this optical coding signals with this enable signal, and make this optical coding signals carry this recognition coding.
16. cover detection method as claimed in claim 15, it is characterized in that, this step (c) more comprises:
Change this measured signal to encode into a feedback; And
According to this feedback coding and the difference of this recognition coding, differentiate whether this measured signal drops within this error tolerance.
17. cover detection method as claimed in claim 14, it is characterized in that, when this second body is covered on this first noumenon, this light signal receiving element is positioned in the projected path of optical coding signals.
18. cover detection method as claimed in claim 14, it is characterized in that, between step (b) and step (c), more comprise a step, continue to differentiate this light signal receiving element whether receiving optical signals and produce this measured signal; If differentiate, this light signal receiving element does not produce this measured signal and re-executes step (a).
19. cover detection method as claimed in claim 14, it is characterized in that, in step (d), if this measured signal drops on beyond this error tolerance, re-execute step (a).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110026347.XA CN102591730B (en) | 2011-01-12 | 2011-01-12 | Cover testing circuit, cover-lifting type electronic device and cover detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110026347.XA CN102591730B (en) | 2011-01-12 | 2011-01-12 | Cover testing circuit, cover-lifting type electronic device and cover detection method |
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| Publication Number | Publication Date |
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| CN102591730A CN102591730A (en) | 2012-07-18 |
| CN102591730B true CN102591730B (en) | 2016-04-06 |
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| CN201110026347.XA Active CN102591730B (en) | 2011-01-12 | 2011-01-12 | Cover testing circuit, cover-lifting type electronic device and cover detection method |
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| CN1118083A (en) * | 1995-05-19 | 1996-03-06 | 珠海科健实业有限公司 | Infrared touch screen photoelectric detecting and positioning system |
| US7196316B2 (en) * | 2004-09-22 | 2007-03-27 | Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. | Portable electronic device with activation sensor |
| US7336407B1 (en) * | 2005-07-28 | 2008-02-26 | Lockheed Martin Corporation | Scanner/pointer apparatus having super-hemispherical coverage |
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| CN102591730A (en) | 2012-07-18 |
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