CN1572252A - Portable instrument provided with an optical device for measuring a physiological quantity and means for transmitting and/or receiving data - Google Patents
Portable instrument provided with an optical device for measuring a physiological quantity and means for transmitting and/or receiving data Download PDFInfo
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- CN1572252A CN1572252A CN 200410063129 CN200410063129A CN1572252A CN 1572252 A CN1572252 A CN 1572252A CN 200410063129 CN200410063129 CN 200410063129 CN 200410063129 A CN200410063129 A CN 200410063129A CN 1572252 A CN1572252 A CN 1572252A
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- physiological parameter
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Abstract
There is disclosed a portable instrument including an optical device (4; 5; 6) for measuring a physiological quantity, particularly the heart rhythm, and data emission and/or reception means, the optical device including at least one light source (41; 51; 61) for subjecting a portion of an organic tissue (10) to a light emission and at least one photoreceptor (42; 52, 53, 54; 62, 64, 66) for detecting the intensity of the light emission after propagation in the organic tissue. The optical device also forms the data emission and/or reception means, said at least one light source and/or said at least one photoreceptor being arranged for respectively emitting data to an external unit or receiving data from said external unit.
Description
Technical field
What the present invention relates generally to comprise optical device is used to measure physiological parameter, the particularly portable unit of heart rate and the element that is used to send and/or receive data, this optical device comprises that at least one is used for to the radiative light source of the part of organic organization, and at least one is used for light is propagated the radiative intensity of back detection in organic organization photoreceptors.
Background technology
So portable measuring device has been known.Particularly, these portable equipments are used for by the oxygenated water of optical element detection heart rate and/or patient blood flat.They have a variety of different forms, and the scope of above-mentioned form is from being placed on the clamp type of anthropolith (particularly finger tips, other of ear-lobe or human body be the abundant dabbling tip of blood arbitrarily), to being worn on the device that is similar to wrist-watch on the wrist.
In the range of application of measuring the rhythm of the heart, optical device is used for the part of organic organization's (particularly skin) is carried out enough irradiations, and this optical device also comprises one or several photoreceptors, is used for light and propagates the emitted luminescence intensity that the back detection is produced by optical device in organic organization.The variation of blood flow pulsation has caused the variation to the radiative absorption that is produced by optical device, and the frequency that described absorption changes corresponds essentially to the frequency of cardiac pulse.Light in the detection that organic organization propagates the back emitted luminescence intensity, is accompanied by the measurement process of appropriate signals or ensemble, thereby can extracts the relevant information of representing heart rate.The optical device structure that generally is used for this type application is simple relatively, and is made up of one or more similar point sources especially.Particularly, they are light emitting diode (LED), launch in predetermined wavelength range, are used with one or more photoreceptorss, particularly photoelectric diode.
Except this function of physiological parameter of measuring expectation, be furnished with the portable unit of the optical device of the above-mentioned type and also be furnished with the element that sends and/or receive data usually.Especially, radiated element typically was used in the operation phase, for example in physics operation phase or Gernral Check-up stage, downloaded the data that measure and be stored in the portable unit and arrived exterior terminal.In addition, receiving element is used for elements with configuration data to portable unit, and the limit value of the physiological parameter that for example measures is wished the minima and the maximum of its heart rate of keeping such as the user.May be relevant from data portable unit emission or that receive by portable unit with the physiological parameter that measures, also may have nothing to do.
The transmission of data and/or receive and to fetch execution by direct cable usually, or preferably finish by unlimited communication element, it can be for for example, acoustics, optics, induction or broadcasting frequency type.
Patent documentation US4,674,743, EP0 842 635 and US5,776,056 disclose the various portable unit of the optical device that has the above-mentioned type, are used to measure physiological parameter and optical data communication element.But these documents disclose the solution of using different optical devices.
As mentioned above, other known solutions depend on acoustics, the communication element of induction or broadcasting frequency type.For example, can citing document EP0 940 119, US5,810,736, US5,622,180 or WO99/41647 and EP1 101 439.
The solution of all above-mentioned existing this areas, comprise the solution of using the optical communication element, have the shortcoming that needs specific additional requirement, this can have influence on the production cost of portable unit, and in order to need exceptional space inevitably with being used in combination with other equipment.Therefore, these solutions are not best on compactness and production cost.
Therefore the objective of the invention is to design a kind of portable unit of the above-mentioned type, this device can reduce production costs with respect to solution of the prior art and reduce size.
Summary of the invention
Therefore the present invention relates to a kind of portable unit, its feature according to claim 1.
The preferred embodiments of the present invention have formed the theme of dependent claims.
According to the solution of suggestion, the present invention advises using and is generally used for measuring the optical device of physiological parameter as radiated element and/or data receiving element.More specifically, at least one light source of optical device is used for sending data to external unit, and/or at least one photoreceptors of optical device is used to receive the data that transmit from external unit.
At run duration, optical device switches in measuring phases and between the communication stage, in measuring phases, optical device is as the element of measuring physiological parameter, and in the communication stage, optical device is as the element of data transmission and/or reception, this portable unit also comprises and is used for storing in measuring phases, change relevant data and, store the memory element of the data relevant with the time of transmitting preceding described physiological parameter with external unit in the communication stage.
According to specific embodiments, advise that also each element can spontaneously start the data transmission/receiving function of measurement function or optical device.
Therefore, the solution of suggestion has makes each assembly of having existed in portable unit can the best advantage of using, and has therefore reduced production cost, and the space utilization that more helps equipment.
Description of drawings
By reading the detailed description of the embodiments of the invention that provided separately by non-restrictive example and accompanying drawing, it is more clear that other characteristic of the present invention and advantage will become subsequently.
Fig. 1 is the perspective view of demonstration side of portable unit that is used to measure physiological parameter according to first embodiment, and this portable unit has the form that is similar to wrist-watch, and also is provided with optical device at the front surface of this device;
Fig. 2 is the bottom perspective view of portable unit that is used to measure physiological parameter according to second embodiment, and it also has the form that is similar to wrist-watch, and has optical device in the bottom of this device;
Fig. 3 is when this device is worn on the measurement that is used for physiological parameter on the wrist, and the brachialia in Fig. 2 is the cross-sectional view strength of described device longitudinally;
Fig. 4 is the block diagram according to the different assemblies of the portable unit of embodiment; And
Chart among Fig. 5 shows during the measurement of physiological parameter, how to design differentiation by the optical signalling that external unit transmits from the signal that collects, and is used for starting selectively the suitable operator scheme of portable unit.
The specific embodiment
To only introduce different embodiment now by nonrestrictive explanation.Particularly, it is emphasized that these embodiment can be advantageously, but do not implement with the form that is worn on the device on the wrist uniquely.Also can be susceptible to other portable application well.
Fig. 1 and 2 illustrates two embodiment of the portable unit that is used to measure physiological parameter fully by non-limitative illustration.These two embodiment have the form that is similar to wrist-watch.Therefore two embodiment have the shell 1 that forms mid portion in this embodiment, and wrist strap 2, and this wrist strap is connected in shell 1 in a usual manner.Display device 3 also is arranged on the front surface of this device, and this display device 3 only occurs in the embodiment in figure 1.Two embodiment of Fig. 1 and Fig. 2 different mainly are to be used to measure the optical device that the physiological parameters (for example already mentioned heart rate in front or blood oxygen level) of expectation use and (do as a whole, indicate respectively with drawing reference numeral 4,5) the position and the difference of structure.
In the embodiment in figure 1, optical device 4 is placed on the front surface of portable unit, and is adjacent with display device 3.Optical device 4 comprises single the light source 41 that is used with single photoreceptors 42 here.As previously described, light source 41 is typical light emitting diode (LED), and it is launched in predetermined wavelength range (for example infrared ray or other suitable wavelengths scope arbitrarily), and photoreceptors 42 is photodiodes, phototransistor or other any appropriate.Be suitable for the wave-length coverage of light source 41 is made the optical receiver of response.
1 embodiment is appreciated that the mensuration of the physiological parameter of expectation is by realizing on the front surface that for example finger is placed on the portable unit relative with optical device 4 with reference to the accompanying drawings.
In the embodiment of Fig. 2, be positioned over the bottom of this device with the optical device of Reference numeral 5 marks.Different with the embodiment of Fig. 1, optical device comprises, except the light source 51 in the bottom center zone that is placed on this portable unit substantially, also has three photoreceptorss 52,53 and 54 that are positioned over symmetrically around the central source 51.The use of a plurality of photoreceptorss that are provided with around one or more light sources generally more preferably than the solution among Fig. 1, its purpose mainly is to improve the measurement reliability better.On this last point, when measuring heart rate, obtain abundant more information in order to make optical system, used at least two sense channels, can be with reference to EP1 297 784, the document discloses an embodiment who is similar to the portable unit of Fig. 2.
Fig. 3 is worn on when (indicating with Reference numeral 10 usually among the figure) on the wrist when device, and the wrist strap in Fig. 2 is the cross-sectional view strength of this portable unit longitudinally.Different with the embodiment of Fig. 1, when wearing, this portable unit for good and all contacts with the organic organization of user with its optical device 5.Light by light source 51 emissions penetrates the enough degree of depth of organic organization, thereby modulates by the blood perfusion of irradiated organic organization.After the photoreceptors 52 to 54 of optical device is reacted, just can detect the emission of modulated light.
Fig. 4 is a block diagram, the main building block of the portable unit in showing according to one embodiment of present invention.As shown in the figure, this portable unit comprises light source 61 (for example light emitting diode (LED) or any other suitable equipment), and it is connected to control circuit 71, and its operation is controlled by CPU 70, for example microprocessor or microcontroller.This central location 70 also is connected in display device 73 (simulation and/or numeric type), memory element 74 (random-access memory (ram)s, read only memory (ROM), electronics erasable programmable read-only memory (EEPROM), flash memory (FLASH) or analog) and clock system 75, this clock system is determined the suitable function timing of central location 70 and peripheral assembly thereof.This clock system 75 also can be realized the time clock feature of traditional clock and watch.
CPU 70 also is connected with the detection that is used for expected physiological parameter (particularly heart rate) and the circuit 72 of measurement, yet the function of this circuit can combine with those functions of CPU.The function of this circuit is mentioned simply, and in fact it be used for from the photoreceptors of connection or the relevant information of the detected optical signalling extraction of photoreceptors group physiological parameter.In this example, first photoreceptors 62 and testing circuit 72 are connected by amplifier element, and, if necessary, filter element 63 can be arranged.With the relevant information transmission of physiological parameter of expectation to central location 72, particularly for demonstration on equipment 73, and/or, preferably be stored in memory element 74 and be used for subsequently the consultation of doctors.
The method that nobody can measure being used to here physiological parameter further enlarges, and its reason is that this problem does not directly relate to theme of the present invention.Moreover, exist the different solutions of carrying out this measurement.Just a kind of especially effectively solution that is used to measure heart rate has been done detailed description in the document EP of mentioning in front 1297784, this piece document is incorporated herein by reference.
In the embodiment of Fig. 4, in order and/or to accept data by its optical device transmission, this portable unit also comprises, on the one hand, modulation element 81, it is connected between the control circuit 71 and central location 70 of light source, and on the other hand, restitution element 82, it is connected between the amplifier element 63 and central location 70 that is connected with photoreceptors 62.
The purpose that is appreciated that modulation element 81 is to control control circuit 71, so that produce synthetic optical signalling by the light source 61 that connects.Equally, be appreciated that the purpose of restitution element 82 is on the contrary, the modulated light signal that is obtained by the photoreceptors 62 that connects is decoded.Any modulation type can both be used for the transmission and the reception of data.Can be traditional amplitude, phase place, frequency or code modulated.Whether in addition, also adopt transmission and reception that special modulation is used for data, be radiatively to inject or send out outward so that clearly identify.Under any situation, the modulation of optical signalling all is based on the data that will transmit.
In Fig. 4, it should be noted that this portable unit can comprise a more than light source and/or a more than photoreceptors.Especially, shown in the dotted line among Fig. 4, second photoreceptors 64 and connected amplifier element 65 all are connected on the detector 72, and the latter needn't be connected with decode element 82.Equally, the 3rd photoreceptors 66 and connected amplifier element 67 all are connected on the decode element 82, rather than are connected on the detector 72.The 3rd photoreceptors does not participate in the detection of the physiological parameter of expectation then, only is used for data and receives.
Usually, within the scope of the invention, it should be noted that, also be fine if at least one light source of the measurement that is generally used for the expected physiological parameter of optical device or photoreceptors also are respectively applied for the transmission or the reception of data.In fact, people more wish only to reduce the function of producing originally living and simplified structure by using a light source or photoreceptors to realize, thus the acquisition advantage.It is also to be noted that, preferred use special photoreceptors to measure physiological parameter separately, and other photoreceptors is used to receive data, above-mentionedly be proved the restriction that is subjected to sensitivity.
Within the scope of the invention, it also is favourable that the device with detecting element is provided, and this checkout gear is used for automatically, optionally starting the physiological parameter measurement function of optical device, perhaps data emission/receiving function.
By first embodiment, this portable unit can comprise first detecting element, when the latter is an optical device when contacting with organic organization, is used for automatically starting the physiological parameter measurement function of optical device.One preferably solution can comprise based on by the detected photoemissive intensity of at least one photoreceptors, come detection optical equipment whether to contact with organic organization.
In a second embodiment, this portable unit also can comprise two detecting elements, is used for automatically starting the transmission and/or the receiving function of the data of optical device when this portable unit sends data.One preferably solution also comprise based on by the detected photoemissive intensity of at least one photoreceptors, detect data and whether send to portable unit.
Refer again to Fig. 4, it also is favourable that portable unit also has element 90, and this element is used for the light emission intensity level by one or more photoreceptors Detection and Extraction.In fact, it is contemplated that at portable unit when measurement pattern is worked, optical signalling that can difference is sent by external unit from optical signalling or the signal that is particularly extracted by same photoreceptors, the optical signal intensity that is produced by external unit can be adjusted to than the higher intensity of average level of measuring the optical signalling during the physiological parameter.
Fig. 5 is with illustrate this probability of chart by changing along with the time, increased a line of representing the optics heart rate measurement and representative line by the modulation signal of external unit transmission in this time block diagram, the corresponding strength of selecting these signals is a different value.By strengthening detection threshold Vth as shown in the figure, therefore just this signal of two types can be differentiated, and portable unit switches to appropriate mode.
From this principle, just can realize optionally start-up detector 72 or decoder 82 by element 90.Decoder 82 also can be used to decode and detect the predetermined optics control signal that is transmitted by external unit.Therefore, the first optics control signal of encoding according to the known array of portable unit can transmit by external unit, thereby portable unit is given a warning: data (for example structured data) will transmit thereto.Similarly, the second optics control signal of encoding according to another known codes sequence of portable unit is sent to external unit, thereby the order portable unit sends data (physiological parameter that for example is stored in the measurement in the memory element 74 as time passes and the data that change).
If be not enough to and distinguish between the optical signalling based on the signal intensity of gathering merely, element 90 can optionally be used for the particular modulation characteristic according to the optical signalling of external unit transmission, thereby signal is distinguished, for example according to the frequency analysis of the signal that receives.Also can expect adopting other similar elements.
Be appreciated that at last for a person skilled in the art, to embodiment of the present invention to make amendment and/or improve be conspicuous, and can not exceed the scope of invention that limits by incidental claims.Especially, the present invention not only uses with the form of wrist-watch, and can use with the form of other any portable units, and no matter whether it is worn on the wrist.
Claims (9)
1. portable unit that is used to measure physiological parameter, particularly heart rate, it comprises optical device (4; 5; 6), and the element that is used to send and/or receive data, described optical device (4; 5; 6) comprise that at least one is used for to the radiative light source (41 of the part of organic organization (10); 51; 61), and after at least one is used for described emission light and propagates in described organic organization, the photoreceptors (42 that emitted luminescence intensity is detected; 52,53,54; 62,64,66),
It is characterized in that described optical element (4; 5; 6) also formed the described element that is used to send and/or receive data, described at least one light source (41; 51; 61) and/or described at least one photoreceptors (42; 52,53,54; 62,64,66) be respectively applied for to external unit transmission data or from external unit reception data.
2. portable unit as claimed in claim 1 is characterized in that: described optical device (4; 5; 6) switch in measuring phases and communication stage, in measuring phases, optical device is as the element of measuring physiological parameter, in the communication stage, and the element that optical device sends and/or receives as data,
This portable unit also comprises the memory element (74) that is used for these data of storage before data are transmitted, and in described measuring phases, described data are relevant over time with described physiological parameter, and in the described communication stage, these data are relevant with described external unit.
3. portable unit as claimed in claim 1 is characterized in that: described optical device (4; 5; 6) so configuration, make when described portable unit is worn on the human body, it keeps for good and all contacting with organic organization (10), so that as the device operation of measuring described physiological parameter, described optical device is configured to when described portable unit is not worn on the human body, as the element operation of data transmission and/or reception.
4. portable unit as claimed in claim 1 is characterized in that: it is included in the latter is optical device when contacting with organic organization, is used for automatically starting described optical device (4; 5; First detecting element (90) of physiological parameter measurement function 6).
5. portable unit as claimed in claim 4 is characterized in that: described first detecting element (90) determines according to by the detected radiative intensity of at least one photoreceptors of optical device whether described optical device contacts with organic organization.
6. portable unit as claimed in claim 4 is characterized in that: it comprises when data send to described portable unit, is used for automatically detecting described optical device (4; 5; Second detecting element (90) of transmission 6) and/or reception data function.
7. portable unit as claimed in claim 6 is characterized in that: described second detecting element (90) detects data and whether sends to portable unit according to by the detected radiative intensity of at least one photoreceptors in the optical element.
8. portable unit as claimed in claim 6 is characterized in that: the data emission function of described optical device and data receiving function, select according to the predetermined optics control signal that transmits by external unit.
9. be used to measure physiological parameter what comprise optical device, particularly in the portable unit of heart rate, use described optical device to send and/or receiving element as data, this optical device comprises and being used for to radiative at least one light source (41 of the part of organic organization (10); 51; 61), and after being used for described emission light and in described organic organization, propagating, at least one photoreceptors (42 that emitted luminescence intensity is detected; 52,53,54; 62,64,66).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH0986/2003 | 2003-06-04 | ||
| CH9862003 | 2003-06-04 | ||
| CH0986/03 | 2003-06-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1572252A true CN1572252A (en) | 2005-02-02 |
| CN100444795C CN100444795C (en) | 2008-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100631293A Expired - Fee Related CN100444795C (en) | 2003-06-04 | 2004-06-03 | Portable instrument provided with an optical device for measuring a physiological quantity and means for transmitting and/or receiving data |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP4567378B2 (en) |
| CN (1) | CN100444795C (en) |
| HK (1) | HK1072886A1 (en) |
| SG (1) | SG135033A1 (en) |
| TW (1) | TWI334342B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101108126B (en) * | 2006-07-21 | 2010-06-16 | Eta瑞士钟表制造股份有限公司 | Pulsometer worn on wrist and associated control method |
| CN105078500A (en) * | 2014-05-22 | 2015-11-25 | 西门子公司 | Method and device for wireless transmission of acoustic cardiac signals |
| CN105939656A (en) * | 2014-02-04 | 2016-09-14 | 皇家飞利浦有限公司 | Optical device for measuring a heart rate of a user |
| CN105979854A (en) * | 2014-01-31 | 2016-09-28 | 苹果公司 | Wearing dependent operation of wearable device |
| WO2018027529A1 (en) * | 2016-08-09 | 2018-02-15 | 深圳市汇顶科技股份有限公司 | Button operation method, apparatus, and system based on heart-rate signal |
| US10761575B2 (en) | 2014-02-11 | 2020-09-01 | Apple Inc. | Detecting a gesture made by a person wearing a wearable electronic device |
| US10987054B2 (en) | 2017-09-05 | 2021-04-27 | Apple Inc. | Wearable electronic device with electrodes for sensing biological parameters |
| US11166104B2 (en) | 2014-02-11 | 2021-11-02 | Apple Inc. | Detecting use of a wearable device |
| US11504057B2 (en) | 2017-09-26 | 2022-11-22 | Apple Inc. | Optical sensor subsystem adjacent a cover of an electronic device housing |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4604811B2 (en) * | 2005-04-18 | 2011-01-05 | 株式会社デンソー | Optical biosensor, base device, biometric information collection system, and sensor communication method |
| US9386932B2 (en) | 2012-10-29 | 2016-07-12 | Microsoft Technology Licensing, Llc | Wearable personal information system |
| JP6407979B2 (en) * | 2014-05-02 | 2018-10-17 | ローム株式会社 | Pulse wave sensor and pulse wave measurement module |
| US9752925B2 (en) * | 2015-02-13 | 2017-09-05 | Taiwan Biophotonic Corporation | Optical sensor |
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| JPS6446432A (en) * | 1987-08-14 | 1989-02-20 | Omron Tateisi Electronics Co | Electronic hemomanometer |
| KR0133460B1 (en) * | 1994-07-05 | 1998-04-22 | 구자홍 | Self health diagnosis method and circuit for television |
| US5810736A (en) * | 1995-08-22 | 1998-09-22 | Pail; Opher | Wrist pulse monitor |
| JPH0975310A (en) * | 1995-09-19 | 1997-03-25 | Noboru Akasaka | Patient monitoring device |
| US6241684B1 (en) * | 1996-04-08 | 2001-06-05 | Seiko Epson Corporation | Exercise workout support device |
| JPH10108844A (en) * | 1996-10-07 | 1998-04-28 | Matsushita Electric Ind Co Ltd | Information processor |
| FI104463B (en) * | 1998-03-02 | 2000-02-15 | Polar Electro Oy | Metering system |
| US7065299B2 (en) * | 2000-12-05 | 2006-06-20 | Ge Medical Systems Information Technologies, Inc. | Medical device having a combination data reader and infrared data transceiver and method of using same |
| DE60143115D1 (en) * | 2001-09-28 | 2010-11-04 | Csem Ct Suisse Electronique | Method and device for pulse measurement |
-
2004
- 2004-05-26 TW TW93115008A patent/TWI334342B/en not_active IP Right Cessation
- 2004-05-27 SG SG200403035-9A patent/SG135033A1/en unknown
- 2004-06-03 CN CNB2004100631293A patent/CN100444795C/en not_active Expired - Fee Related
- 2004-06-04 JP JP2004167030A patent/JP4567378B2/en not_active Expired - Fee Related
-
2005
- 2005-07-04 HK HK05105596.2A patent/HK1072886A1/en not_active IP Right Cessation
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101108126B (en) * | 2006-07-21 | 2010-06-16 | Eta瑞士钟表制造股份有限公司 | Pulsometer worn on wrist and associated control method |
| CN105979854B (en) * | 2014-01-31 | 2019-08-16 | 苹果公司 | The operation for depending on wearing situation of wearable device |
| CN105979854A (en) * | 2014-01-31 | 2016-09-28 | 苹果公司 | Wearing dependent operation of wearable device |
| US10492726B2 (en) | 2014-01-31 | 2019-12-03 | Apple Inc. | Wearing dependent operation of wearable device |
| CN105939656A (en) * | 2014-02-04 | 2016-09-14 | 皇家飞利浦有限公司 | Optical device for measuring a heart rate of a user |
| CN105939656B (en) * | 2014-02-04 | 2019-06-28 | 皇家飞利浦有限公司 | For measuring the optical device of user's heart rate |
| US10761575B2 (en) | 2014-02-11 | 2020-09-01 | Apple Inc. | Detecting a gesture made by a person wearing a wearable electronic device |
| US11166104B2 (en) | 2014-02-11 | 2021-11-02 | Apple Inc. | Detecting use of a wearable device |
| US11281262B2 (en) | 2014-02-11 | 2022-03-22 | Apple Inc. | Detecting a gesture made by a person wearing a wearable electronic device |
| CN105078500A (en) * | 2014-05-22 | 2015-11-25 | 西门子公司 | Method and device for wireless transmission of acoustic cardiac signals |
| WO2018027529A1 (en) * | 2016-08-09 | 2018-02-15 | 深圳市汇顶科技股份有限公司 | Button operation method, apparatus, and system based on heart-rate signal |
| US10987054B2 (en) | 2017-09-05 | 2021-04-27 | Apple Inc. | Wearable electronic device with electrodes for sensing biological parameters |
| US11432766B2 (en) | 2017-09-05 | 2022-09-06 | Apple Inc. | Wearable electronic device with electrodes for sensing biological parameters |
| US11504057B2 (en) | 2017-09-26 | 2022-11-22 | Apple Inc. | Optical sensor subsystem adjacent a cover of an electronic device housing |
Also Published As
| Publication number | Publication date |
|---|---|
| SG135033A1 (en) | 2007-09-28 |
| TW200505390A (en) | 2005-02-16 |
| JP4567378B2 (en) | 2010-10-20 |
| JP2004358258A (en) | 2004-12-24 |
| TWI334342B (en) | 2010-12-11 |
| CN100444795C (en) | 2008-12-24 |
| HK1072886A1 (en) | 2005-09-16 |
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