CN101616196A - Has Wireless Telecom Equipment with the crew-served transducer of a plurality of magnets - Google Patents
Has Wireless Telecom Equipment with the crew-served transducer of a plurality of magnets Download PDFInfo
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- CN101616196A CN101616196A CN200810175656A CN200810175656A CN101616196A CN 101616196 A CN101616196 A CN 101616196A CN 200810175656 A CN200810175656 A CN 200810175656A CN 200810175656 A CN200810175656 A CN 200810175656A CN 101616196 A CN101616196 A CN 101616196A
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Abstract
Here described a kind of Wireless Telecom Equipment that has with the crew-served transducer of a plurality of magnets, it has and the crew-served transducer of a plurality of magnets, and comprises first and second shells.Two non-hinge fractions that shell all has hinge fraction and extends out from hinge fraction, and hinge fraction coupling rotationally each other.First shell comprises one or more magnetic part, but the non-hinge fraction of second shell is without any magnetic part.Described Wireless Telecom Equipment comprises first magnet, second magnet and magnetic sensor.First magnet provides constant magnetic flux, and second magnet provides variable magnetic flux.Magnetic sensor is positioned at the detection range of first and second magnets, and therefore, magnetic sensor receives constant magnetic flux and variable magnetic flux.
Description
Technical field
The present invention relates generally to the have backlit display field of wireless communication devices of (backlit displays), more particularly, the present invention relates to have the flip-shell (flip) or Kazakhstan shell-type (clamshell) equipment of the electronic circuit that is used to control the back lighting that offers display.
Background technology
Wireless Telecom Equipment can have multiple form factor, and wherein a kind of is to breathe out shell-type or flip-shell form factor.For the flip-shell form factor, equipment comprises two shells by hinge interconnect, so that the structure of equipment can change.Two shells can separate when open position and closure when off-position.
One or more features of equipment can be subjected to the influence of mobile flip phone structure.The illumination mechanism that is used for the internal display of equipment can activate when open position, and stops using when off-position.Can in shell, provide transducer to be used for the structure of identification equipment.Magnet can be arranged in a shell, and hall effect sensor can be arranged in another shell, so that magnet and hall effect sensor can be located adjacent one another when off-position.Based on the magnetic field by the hall effect sensor induction, equipment can determine whether it is configured to open or close the position.
Wireless Telecom Equipment can be based on the light source that structure opens or closes its display that is used to throw light on that opens or closes of equipment.When renovating of Wireless Telecom Equipment closed, equipment was in " sleep " pattern Waiting for Call.Magnet and hall effect sensor minimize battery consumption with located adjacent one another so that display illumination is closed.When renovating when opening, equipment is activated for whole operations of all functions.Magnet and hall effect sensor further can be separated from one another, so that display illumination is opened to strengthen user's watching display.
Because design reasons, magnet also can be arranged in the hinge of Wireless Telecom Equipment except being arranged in a shell.Hall effect sensor can be arranged in the shell of one of them adjacent magnet.Hall effect sensor is a converter, the variation of its response magnetic field and change output voltage.In conjunction with digital circuit, hall effect sensor can be used as switch (switch) operation.Tube apparatus is not opened or is closed, and the distance between magnet and the hall effect sensor does not change.Although the reversing of magnetic flux, for opening and closing the position, electromagnetic field intensity is still very strong.Therefore, hall effect sensor can will be closed or open position and partially open location recognition and open, but hall effect sensor will be difficult to discern off-position and fully open position.For this reason, existing equipment utilizes another magnet and hall effect sensor (therefore, having two magnets and two hall effect sensors altogether) to discern off-position and fully open position.
For specific Wireless Telecom Equipment, normal shell is coupled in limited shell, does not have the space to be used for magnet or transducer in the limited shell of equipment.That is to say that the magnet of equipment and transducer can only be defined in the shell and hinge of equipment.Unfortunately, for the existing equipment with limited shell, hall effect sensor can not be utilized, because as mentioned above, transducer can not be discerned between the off-position of equipment and fully open position.Therefore, need a kind of Wireless Telecom Equipment, its can its close and open position between discern, and need not in the shell magnet or transducer to be set therein.
Description of drawings
Fig. 1 is the plane graph according to one embodiment of the invention.
Fig. 2 is the structure chart according to the exemplary internal part of one embodiment of the invention.
Fig. 3 is an illustration when the cutaway view that is in transducer and associated magnetic body position when closing according to embodiments of the invention.
Fig. 4 is an illustration when the cutaway view that is in transducer and associated magnetic body position when opening according to embodiments of the invention.
The figure in Fig. 5 various magnetic fields that to be illustration provided by magnet according to an embodiment of the invention.
Embodiment
A kind of Wireless Telecom Equipment is disclosed, its can close and open position between discern, and need not in its shell, to be provided with magnet or transducer.Especially, this equipment is flip-shell or breathes out shell-type equipment that the magnet that it comprises a plurality of collaborative works is used for providing Magnetic Field to magnet transducer, for example hall effect sensor when the shell of equipment moves relative to each other.The magnetic flux of a plurality of magnets of combining can change the magnetic flux that is received by hall effect sensor, and therefore, activates or change the operation of Wireless Telecom Equipment.Magnetic flux can be managed and change to a plurality of magnets, even the distance between hall effect sensor and the magnet does not change.
The present invention is for the Wireless Telecom Equipment that can be applicable to have the flip body that is coupled in main body rotationally, and wherein flip body does not have the space to be used for magnet or magnetic sensor.For some device designs, expectation be to have thin flip body, it does not allow to support therein a plurality of parts.For miscellaneous equipment design, expectation be flip body with substantial transparent, it does not allow to support therein nontransparent or non-transparent parts.For this device design,, be that main body can be around the capacity in the hinge of its rotation for magnet or the only space of magnetic sensor except main body.
One aspect of the present invention be a kind of have can with the Wireless Telecom Equipment of the crew-served transducer of a plurality of magnets.This Wireless Telecom Equipment comprises first magnet, second magnet and magnetic sensor.First magnet provides constant magnetic flux, and second magnet provides variable magnetic flux.Magnetic sensor is positioned at the detection range of first and second magnets.Also have, magnetic sensor receives constant and variable magnetic flux.
Another aspect of the present invention is a kind of Wireless Telecom Equipment, and it comprises first shell and second shell, and this second shell is coupled in first shell rotationally.Especially, the first shell first non-hinge fraction that has first hinge fraction and extend out from this first hinge fraction.The second non-hinge fraction that second shell has second hinge fraction and extends out from this second hinge fraction, and second hinge fraction is coupled in first hinge fraction rotationally.Also have, first shell comprises at least one magnetic part, and the second non-hinge fraction of second shell does not have any magnetic part.
With reference to 1, one embodiment 100 of figure is flip-shell or the portable electric appts of breathing out shell-type, and it has top section 110 and base section 112, and they are movably connected together at hinge 114 places.Top section 110 comprises audio output 116, and base section 112 comprises audio input end 118 and user interface 120.For example, user interface 120 can be a touch sensitive display, and it comprises the backlight assembly of display and this display of illumination.Embodiment 100 can also comprise other parts of wireless device, for example, and antenna, compact power, aerial lug, additional control etc.
Each all comprises hinge fraction and non-hinge fraction in top and the bottom enclosure 110,112, and the hinge fraction of shell forms the hinge 114 of embodiment 100.As shown in Figure 1, top casing 110 comprises hinge fraction 122 and the non-hinge fraction 124 that extends out from this hinge fraction.Equally, bottom enclosure 112 comprises hinge fraction 126 and the non-hinge fraction 128 that extends out from this hinge fraction.When hinge fraction 122,125 linked together, they were coupled so that embodiment 100 can open or close mutually rotationally.
With reference to figure 2, provide the structure chart of illustration according to the exemplary internal part 200 of Wireless Telecom Equipment of the present invention.Internal part 200 comprises one or more wired or wireless transceivers 201, one or more processors 203, one or more memory portion 205, one or more output blocks 207, and one or more input parts 209.Each embodiment can comprise user interface, and it comprises one or more output blocks 207 and one or more input parts 209.Each transceiver 201 can be directly and other parts wired connection or utilize wireless technical communication, for example, but is not limited to, communication such as analog communication (using AMPS) based on honeycomb, digital communication (is used CDMA, TDMA, GSM, iDEN, GPRS, or EDGE), and next generation communication (uses UMTS, WCDMA, LTE or IEEE802.16) and their variant; Equity or ad hoc (self-organizing) for example HomeRF that communicates by letter, bluetooth and IEEE802.11 (a, b, g, or n); And other wireless forms of communication infrared technology for example.Each transceiver 201 can be a receiver, and transmitter or both are.
The input parts 209 of internal part 200 can comprise the video inputs parts, and for example optical pickocff is (for example, camera), the audio input end parts for example microphone and mechanical input parts for example button or button are selected transducer, touchpad sensor, touch panel sensor, capacitance sensor, motion sensor and switch.Equally, the output block 207 of internal part 200 can comprise various videos, audio frequency and/or machinery output.For example, output block 207 can comprise for example cathode ray tube of video output block 316, LCD, be used to provide the light source to display backlight, plasma scope, incandescent lamp, fluorescent lamp, preceding or rear-projection display device, and light-emitting diode indicating device.Other example of output block 207 comprises for example loud speaker of audio output parts, alarm and/or buzzer, and/or mechanical output block is that for example vibrate or based drive mechanism.
The memory portion 205 of internal part 200 can be used with storage and retrieve data by processor 203.Can include, but are not limited to operating system, application program, and data by the data of memory portion 205 storages.Each operating system comprises executable code, it is used to control the basic function of secondary or mobile device, mutual between the parts of internal part 200 for example, by communicating by letter of each transceiver 201 and/or unit interface (referring to following) and external equipment, and to from memory portion 205 storages and retrieve application and data.Each application comprises executable code, utilizes operating system so that unique function that is used for secondary or mobile device to be provided.Data are not executable code or information, and it can be by operating system or application reference and/or operation to be used to realize the function of secondary or mobile device.For example, processor 203 can retrieve information about broadcasting channel from memory portion 205.
Internal part 200 may further include unit interface 211 with the direct connection that is provided to accessory or annex to be used for additional or enhancement function.Internal part 200 preferably includes power supply 213, and for example power supply or portable battery are used to provide power to other internal part.
Internal part 200 also comprises at least one magnetic sensor 115 and two or more magnet 117 that is associated with each magnetic sensor.For example, one or more magnetic sensors 115 can be hall effect sensors, and it is that response magnetic field changes and the converter of change output voltage.A plurality of (two or more) magnet 117 must be relevant with each magnetic sensor 115.Therefore, if internal part 200 comprises a magnetic sensor, then internal part must comprise at least two magnets in the detection range of magnetic sensor.If internal part 200 comprises first and second magnetic sensors, then internal part must comprise at least two magnet and at least two magnets in the detection range of second magnetic sensor in the detection range of first magnetic sensor, and or the like.
Should be appreciated that provides Fig. 2 only for exemplary purpose, is used for the parts of illustration according to Wireless Telecom Equipment of the present invention, and does not mean complete example figure secondary or the various parts that mobile device is required.Therefore, Wireless Telecom Equipment can comprise multiple other unshowned parts in Fig. 2, perhaps can comprise the combination of two or more parts, and perhaps specific features is divided into two or more independent parts, and does not still depart from the scope of the present invention.
Fig. 3 has represented that according to one embodiment of present invention wherein this embodiment is in its closing structure 300, and Fig. 4 represents identical embodiment, and wherein this embodiment is in its open position 400.Shell position relative to each other can change.For example, at open position 400, the shell of Wireless Telecom Equipment is spent between 180 degree at their the axle place separable to each other 150 that converges, and wherein hinge 311 is positioned at the described axle place that converges.Wireless Telecom Equipment 100 comprises first shell 301 in special embodiment to one, and it comprises one or more magnetic parts.For example, shown in Fig. 3 and 4, first shell 301 can comprise magnet 303 and hall effect sensor 305.Magnetic part 303,305 can be supported by substrate 307.Printed circuit board for example.Magnetic part 303,305 can be supported or supported at the not homonymy of substrate in the same side of substrate 307, shown in Fig. 3 and 4.Wireless Telecom Equipment 100 further comprises second shell 309, and wherein an end of second shell is coupled in an end of first shell rotationally, and therefore the end at shell forms hinge 311.As mentioned above, first and second shells, 301,309 hinge fractions form hinge 311.Shown in Fig. 3 and 4, second shell 309 is except being that promptly, the non-hinge fraction of second shell does not have any magnetic part a part that part of of hinge 311.Further, for this embodiment, another magnet 313 can be supported in the hinge 311, i.e. the hinge fraction of first and second shells 301,309.
Wireless Telecom Equipment can also comprise as above other parts of Fig. 1 and 2 description of reference.For example, first shell 301 of Wireless Telecom Equipment 100 can comprise radio receiving-transmitting unit and compact power.First shell 301 can also comprise electronic circuit, supports by substrate 307, and the audio input end that is coupled in this electronic circuit.First shell 301 may further include display and the light source of display illumination is provided.For another example, second shell 309 can comprise the audio output that is coupled in the electronic circuit of shell 301 by hinge 311.Second shell 309 can also comprise transparent part, its allow when equipment in the closed position 300 the time outside of the display of first shell 301 watch.
Wireless Telecom Equipment 100 can comprise two magnets 303,313, single magnetic sensor 305 co-operations of itself and equipment and cause the switching that is used for the change of display backlight between Kai Heguan when equipment opens and closes.Magnetic sensor 305 can change owing to the spatial limitation of equipment 100 with respect to the position of magnet 303,313, but magnetic transducing should preferably be in magnetic field or the optimum detection of magnetic flux or the position of being convenient to from described magnet of reading.For an embodiment, magnetic sensor 305 can be positioned at position equidistant as far as possible with magnet 303,313 between the magnet 303,313.For another embodiment, magnetic sensor can be positioned at certain between the magnet 303,313.
A magnet 303 is fixed, yet another magnet 313 can rotate rotation in 410 o'clock or mobile at Wireless Telecom Equipment.Each magnet 303,313 comprises the arctic 317,319 and the South Pole 321,323.When equipment in the closed position 300 the time, as shown in Figure 3, the polarity of magnet 303,313 is in opposite direction, therefore the South Pole 323 of second magnet 313 is pointed in the South Pole 321 of first magnet 303, and the arctic 319 that the arctic 317 of first magnet is pointed to away from second magnet.When equipment is shown in an open position 400, as shown in Figure 4, magnet 303,313 polarity is positioned at similar direction, therefore the South Pole 321 of first magnet 303 is pointed to as the identical direction in South Pole 323 of second magnet 313, and the arctic 319 of the arctic 317 of first magnet and second magnet is pointed to identical direction each other, is opposite direction with the South Pole of magnet still.When Wireless Telecom Equipment 100 is configured to primary importance 300 (as closing among Fig. 3), then magnetic pole 317,319, and 321,323 will be on identical direction, and can be magnetic flux sums from magnet 303,311 at magnetic sensor 305 detected magnetic flux.As a result, in this case, device display can be not illuminated, promptly lost efficacy " closing ".When Wireless Telecom Equipment 100 is configured in the second place 400 (as opening among Fig. 4), then magnetic pole 317,319, and 321,323 will be in the opposite direction, can be two counteractings between the magnet 303,311 at the detected magnetic flux of magnetic sensor.As a result, in this case, device display can be illuminated, promptly activates " opening ".
When environment division was shown in an open position, the polarity of magnet 303,313 can substantial lateral (transverse).For example, when the position of the magnetic pole of first magnet 303 can be constant, (from the visual angle shown in Fig. 3 and 4) can be pointed in the South Pole of second magnet 313, and the arctic of second magnet can be pointed to down.
With reference to figure 5, show the Figure 50 0 in the various magnetic fields that illustration provides by magnet according to an embodiment of the invention.Figure 50 0 shows the upper limit of magnetic flux 510, the lower limit of magnetic flux 520, the magnetic flux 530 that is provided by second magnet 313, the magnetic flux 550 of magnetic flux 540 that is provided by first magnet 303 and the combination that received from two magnets by magnetic sensor 305.As shown in Figure 5, by the magnetic flux 520 that first magnet 303 provides, when making up with the magnetic flux 530 that is provided by second magnet 313, the magnetic flux 550 that offers combination is offset accordingly.
The function that is arranged in second magnet 313 of hinge 311 is that transformable magnetic field is provided when Wireless Telecom Equipment 100 centers on hinge through.The magnetic flux that is received by magnetic sensor 305 is cosine curve 530 as shown in Figure 5.When shell 301,309 is opened with first angle, (as about 28 degree), the magnetic flux 530 that is provided by second magnet 313 can intersect with the upper limit 510 of magnetic flux 1: 560.For example, if display illumination based on device structure, then display illumination zero degree and 28 the degree between can lose efficacy, promptly " close ".When shell 301,309 is opened with second angle (for example about 152 degree), the magnetic flux 530 that is provided by second magnet 313 can intersect with the lower limit 520 of magnetic flux 1: 570.For example, if display illumination based on device structure, then display illumination 28 the degree and 152 the degree between can be activated, promptly " open ", and when spend greater than 152 the inefficacy.Since expectation display illumination when device shutdown " is closed " and when equipment is opened display illumination " open ", so second magnet 313 it seems the information that can't provide enough separately to magnetic sensor 305 and other parts to finish this task.
The function of first magnet 303 that is arranged in the non-hinge fraction of first shell 301 is when Wireless Telecom Equipment 100 rotates around hinge 311 the transformable magnetic field that is provided by second magnet 313 to be provided in indeclinable magnetic field.As shown in Figure 5, the magnetic flux that is received by magnetic sensor 305 is that cosine curve 530 forms through the linearity skew back of being caused by described not varying magnetic field.When device shutdown, the South Pole 321 of first magnet 303 is pointed in the South Pole 323 of second magnet 313.Because magnetic sensor 305 is positioned between the magnet 303,313, the magnetic flux field intensity is accumulated, for example, and as shown in Figure 5 greater than 50Gs.When equipment was opened, the South Pole 321 of first magnet 303 was pointed in the arctic 319 of second magnet 313.Total magnetic flux field intensity almost can disappear mutually, therefore by magnetic sensor 305 detected magnetic flux less than 20Gs, for example, as shown in Figure 5 less than-20Gs.
Still with reference to figure 5, when shell 301,309 is opened with the third angle degree, (for example about 65 degree), the magnetic flux that is provided by first and second magnets 303,313 can thirdly 580 intersect with the magnetic flux upper limit 510.For example, if display illumination based on the structure of equipment, then display illumination zero degree and 65 the degree between can lose efficacy, promptly " close ".When shell 301,309 is opened to surpass the third angle degree (for example greater than 65 degree), the magnetic flux that is provided by first and second magnets 303,313 can not intersect with the lower limit 520 of magnetic flux.For example, if display illumination based on device structure, is then opened when spending greater than 65 when equipment, display illumination can be activated, and promptly " opens ".Because expectation display illumination when device shutdown " is closed " and when equipment is opened display illumination " open ", the invention provides enough information to magnetic sensor 305 and other parts to finish this task.
Though illustration and described the preferred embodiments of the present invention should be appreciated that the present invention is not limited only to this.Can carry out multiple modification for those skilled in the art, change, change, substitute and be equal to, and not break away from the spirit and scope of the present invention by additional claim definition.
Claims (13)
1. Wireless Telecom Equipment that has with the crew-served transducer of a plurality of magnets comprises:
First magnet provides constant magnetic flux;
Second magnet provides variable magnetic flux; And
Be positioned at the magnetic sensor of the detection range of described first and second magnets, described magnetic sensor receives described constant magnetic flux and described variable magnetic flux.
2. Wireless Telecom Equipment as claimed in claim 1, further comprise: the processor that is coupled in described magnetic sensor, wherein said processor makes up described constant magnetic flux and described variable magnetic flux, determining the state of described Wireless Telecom Equipment, and carry out the function of described Wireless Telecom Equipment based on determined state.
3. Wireless Telecom Equipment as claimed in claim 2 further comprises display and light source, and wherein said light source provides illumination to described display based on determined state.
4. Wireless Telecom Equipment as claimed in claim 1, wherein:
Described Wireless Telecom Equipment comprises hinge fraction and non-hinge fraction;
Described first magnet and described magnetic sensor are supported by the described non-hinge fraction of described equipment; And
Described second magnet is supported by the described hinge fraction of described equipment.
5. Wireless Telecom Equipment as claimed in claim 1, wherein said second magnet rotates with respect to described first magnet and described magnetic sensor, but is maintained fixed distance with described first magnet and described magnetic sensor.
6. Wireless Telecom Equipment as claimed in claim 1 further comprises radio receiving-transmitting unit and compact power.
7. Wireless Telecom Equipment that has with the crew-served transducer of a plurality of magnets comprises:
First shell, the first non-hinge fraction that has first hinge fraction and extend from described first hinge fraction, described first shell comprises at least one magnetic part; And
Second shell, the second non-hinge fraction that has second hinge fraction and extend from described second hinge fraction, described second hinge fraction is coupled in described first hinge fraction rotationally, and the described second non-hinge fraction does not have any magnetic part.
8. Wireless Telecom Equipment as claimed in claim 7, wherein said at least one magnetic part comprises magnet and magnetic sensor.
9. Wireless Telecom Equipment as claimed in claim 7 further is included in the magnet that supports in described first and second hinge fractions.
10. Wireless Telecom Equipment as claimed in claim 7 further comprises the radio receiving-transmitting unit and the compact power that are supported by described first shell.
11. Wireless Telecom Equipment as claimed in claim 7, wherein:
Described first shell supports electronic circuit and is coupled in the audio input end of described electronic circuit;
Described second shell supports the audio output that is coupled in described electronic circuit by described first and second hinge fractions.
12. Wireless Telecom Equipment as claimed in claim 7, wherein:
The described first shell support displays; And
Described second shell comprises transparent part, and when the described first and second non-hinge fractions were located adjacent one another, described display was watched in described transparent part permission from the outside.
13. Wireless Telecom Equipment as claimed in claim 7, wherein said first shell support displays and the light source, when described at least one magnetic part determined that described second shell has turned to away from described first shell, described light source provided illumination to described display.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310308555.8A CN103475755B (en) | 2008-06-25 | 2008-06-25 | Wireless communication device with sensor in cooperation with a plurality of magnets |
| CN200810175656.1A CN101616196B (en) | 2008-06-25 | 2008-06-25 | Wireless communication device with sensor synergistically operated with a plurality of magnets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810175656.1A CN101616196B (en) | 2008-06-25 | 2008-06-25 | Wireless communication device with sensor synergistically operated with a plurality of magnets |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310308555.8A Division CN103475755B (en) | 2008-06-25 | 2008-06-25 | Wireless communication device with sensor in cooperation with a plurality of magnets |
Publications (2)
| Publication Number | Publication Date |
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| CN101616196A true CN101616196A (en) | 2009-12-30 |
| CN101616196B CN101616196B (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810175656.1A Active CN101616196B (en) | 2008-06-25 | 2008-06-25 | Wireless communication device with sensor synergistically operated with a plurality of magnets |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103000163A (en) * | 2012-06-19 | 2013-03-27 | 苏州佳世达电通有限公司 | Display device, combined display device and combined application method of display device |
| CN114111544A (en) * | 2020-09-01 | 2022-03-01 | 三星电子株式会社 | Sensor device and method for determining relative position and electronic device |
| WO2022212044A1 (en) * | 2021-03-31 | 2022-10-06 | Microsoft Technology Licensing, Llc | Rotatably coupled touch screen displays |
| CN115182656A (en) * | 2019-10-15 | 2022-10-14 | 谷歌有限责任公司 | Magnetic Bistable Hinge System |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103000163A (en) * | 2012-06-19 | 2013-03-27 | 苏州佳世达电通有限公司 | Display device, combined display device and combined application method of display device |
| CN115182656A (en) * | 2019-10-15 | 2022-10-14 | 谷歌有限责任公司 | Magnetic Bistable Hinge System |
| CN115182656B (en) * | 2019-10-15 | 2024-02-20 | 谷歌有限责任公司 | Magnetic bistable hinge system |
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| CN114111544A (en) * | 2020-09-01 | 2022-03-01 | 三星电子株式会社 | Sensor device and method for determining relative position and electronic device |
| WO2022212044A1 (en) * | 2021-03-31 | 2022-10-06 | Microsoft Technology Licensing, Llc | Rotatably coupled touch screen displays |
| US11550362B2 (en) | 2021-03-31 | 2023-01-10 | Microsoft Technology Licensing, Llc | Rotatably coupled touch screen displays |
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|---|---|
| CN101616196B (en) | 2014-10-29 |
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