Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
  • H04R1/00—Details of transducers, loudspeakers or microphones
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
  • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
  • H04B1/3827—Portable transceivers
  • H04B1/3833—Hand-held transceivers
  • H04B1/3838—Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
  • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
  • H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
  • H04R2201/107—Monophonic and stereophonic headphones with microphone for two-way hands free communication
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
  • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
  • H04R2420/07—Applications of wireless loudspeakers or wireless microphones
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
  • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
  • H04R2499/10—General applications
  • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Definitions

• the present invention relates to cellular phones, and more specifically to a system and method for exposing the user's brain to much less microwave radiation than ordinary cellular phones with the help of a proxy device.
• One possible solution is using a special headset (with at least 1 earphone and microphone) where the cable is based on non-metallic conductors, such as sound conductors (e.g. a hollow air tube) or optic fiber(s), as described in a separate patent application by the present inventor.
• non-metallic conductors such as sound conductors (e.g. a hollow air tube) or optic fiber(s), as described in a separate patent application by the present inventor.
• Bluetooth technology can broadcast only to a small distance (typically up to about 10 meters), and therefore, although it also uses microwave radiation, its levels are much lower than cellular phones - between 1-10 milliwatts, compared to up to 2 watts in cellular phones, so the levels of radiation should be 100-1000 times lower.
• An additional advantage is that the cellular phone itself can be even in your suitcase or bag while answering calls through the headset.
• Bluetooth technology also has a built-in automatic encryption and decryption and a built-in ability to automatically jump between many channels of different frequency (typically at least 80 channels) in order to avoid conflict and interference with other nearby bluetooth devices. This is supposed to be the new state of the art for cellular headsets in about 2 years from now. Summary of the invention
• the present invention is a reverse and a more sophisticated solution that complements the above described bluetooth headset solution. Since many people don't like using headsets at all because they feel they are less convenient and because many cheap headsets use earphones and microphones of poor hearing quality (compared to the level of the built-in microphone and speaker in the phone itself), the present solution solves the problem also for all those people that prefer to use the phone directly without the earphones.
• the level of microwave radiation to which the user is exposed near his brain is reduced by a large factor by enabling the phone to communicate with a very near proxy device by using low levels of radiation to communicate wirelessly with the proxy device or using an alternative method with no metallic wire and no radiation to communicate with the proxy device. This can be done in a number of possible ways:
• the cellular phone is redesigned so that instead of using an ordinary cellular phone antenna it can use preferably a bluetooth chip or any other device for short range low energy wireless communication, and instead of communicating with the cellular company's nearest cell or cells (as a normal cellular phone would do), it can communicate with a proxy device, which is a transducer that on one hand transfers information from and to the cellular phone through another bluetooth chip or similar device, and on the other hand communicates preferably through a normal cellular antenna with the cellular company's nearest cell(s) instead of the cellular phone.
• a proxy device which is a transducer that on one hand transfers information from and to the cellular phone through another bluetooth chip or similar device, and on the other hand communicates preferably through a normal cellular antenna with the cellular company's nearest cell(s) instead of the cellular phone.
• the recharger unit of the cellular phone is redesigned so that it has two sockets, one for the cellular phone and one for the proxy, and so both can be recharged at the same time, or the cellular phone or the proxy can have a separate recharge socket of their own, so that the two devices can be connected to the recharger in serial mode instead of in parallel.
• the phone has also its normal antenna and its related circuits, and is able to sense if there is any temporary problem with the proxy device and if for some reason the proxy device cannot be reached or does not function, the phone can then temporarily revert to normal operation and communicate with the cellular company's nearest cells normally.
• a sound and/or light will flash, alerting the user that he is again exposed to the microwave radiation.
• the warning sound will keep repeating every few seconds, thus reminding the user all the time that he is currently using the phone in potentially unsafe mode.
• the cellular phone and the proxy set both have a matching private encryption key, and will refuse to communicate with a pair that does not fit.
• this private encryption key can be easily added or changed, for example by use of EPROM, in each of the two members of the pair (the phone or the proxy) in case the other member (the phone or the proxy) was lost or damaged.
• the use of the proxy will be OK also when the cellular phone is used for data communication (instead of voice communication), such as Internet access, because the bluetooth and similar technologies can transfer at least 1 Megabit per second and will probably improve further in the future.
• Another possible variation is that, when using the cellular phone for data communication, since the phone is typically in the user's hand and away from his head, the user might be given the choice also on purpose to work without the proxy and temporarily disable the warning. However, this is not recommended, since for viewing the cellular phone's screen the cellular phone might still be held relatively close to the user's head.
• the phone does not have a normal cellular antenna and its circuitry and always relies on the proxy to communicate with the cellular company's cells, and preferably is based on maximum energy saving and therefore preferably also has a smaller rechargeable battery and/or can work longer before recharging is needed, so that it is preferably considerably lighter than a normal cellular phone.
• This can be accomplished for example by using CMOS circuits as much as possible and PWM (Pulse width Modulation) and also for example a Piezoelectric speaker or for example a speaker based on a small air-tube that goes into the ear like in hearing aids for the deaf, which saves energy, etc.
• PWM Pulse width Modulation
• PWM can be used for example while communicating between the phone and the proxy, or the communication can be any other communication such as for example the standard Bluetooth protocol, and in that case the PWM can be used for example inside the phone itself to transfer the information in an energy-efficient manner to the speaker.
• An additional preferable way of saving energy is for example to automatically reduce the duty cycle of the transmitter (or stop it completely) when the user is not talking, and when he starts to talk it is quickly restarted. This might cause a few milliseconds of speech at the start of a new speech to become lost, but that is negligible.
• these energy-efficiency principles can be used also with the other solutions and especially for example solution number 2, so that when the phone is held near the user's head and communicates with the proxy it works in the energy efficient mode, and for example when the proxy is used as headset it also consumes as little energy as possible, thus preferably extending time until recharge is needed.
• the battery can be either a single- use battery, preferably one that can last a long period such as a few months (for example with up to 3 hours talk-time per day) with the efficient circuit, or a rechargeable battery that preferably can also last relatively long with the efficient circuit until recharge is needed.
• the phone can also fold open into a shape of a headset or have part of it extended and be conveniently hung on the ear or on the head, preferably with an appropriate band or hook, and so the phone itself can function dually both as a hand-held phone and as a hands-free headset device, which is also very useful for example when driving, so that the driver does not need to dial first with the phone and then look for the headset and insert it, as is typically done in the present state of the art normal type of earphones.
• the phone is made even lighter by making it for example thinner, and possibly also somewhat smaller.
• This variation has the advantage (compared to solution number 2) that only one (preferably high quality) speaker and earphone are needed in the system and only one cellular antenna and it's circuitry and it's required battery are needed in the system.
• the proxy itself has also a display screen, which is preferably bigger than the phone's display screen, and preferably also a convenient keyboard, so that the user can either hold the phone in his hand for Internet access, or use it as headset and hold the proxy in the hand for viewing the screen and keying commands.
• the phone fits over the proxy like a phone cover, like a two-part phone, so when the user opens the phone to initiate or answer a call it feels like picking up the phone's cover.
• the proxy contains just the transducer, and only the phone contains the screen and can be used preferably either for talking or for sliding the Internet or both at the same time, and in addition the phone can be used for example with a normal hands-free earphone or with a wireless earphone. If used with a wireless earphone then the phone can for example communicate with both the earphone and the proxy by bluetooth or similar device.
• Another possible variation is to add to the cellular phone and/or to the proxy for example volume control and/or pitch control, which are currently unavailable in cellular phones and in cellular earphones, in order to improve further the sound quality for example when it is difficult to hear. This can be used for example in solution 1 or in solution 2.
• various combinations of the above and additional variations can also be used.
• the proxy device is preferably shaped like a headset (preferably at least in one of its states, such as for example when unfolded) and has also a preferably high-level microphone and earphone and can also function dually - in this case as either a proxy device, or as a headset.
• the proxy is preferably light in weight.
• the proxy device preferably functions exactly as described in solution number 1.
• the proxy device if the user wants to put away the cellular phone and use a headset, he can use the proxy device as a headset and then the proxy device preferably disables its cellular antenna and the communication with the cellular company's cells and activate its speaker and earphone, and the cellular phone preferably deactivates it's own speaker and earphone and reactivate it's normal cellular antenna and related circuitry and communicates with the cellular company's nearest cells.
• the proxy device preferably disables its cellular antenna and the communication with the cellular company's cells and activate its speaker and earphone, and the cellular phone preferably deactivates it's own speaker and earphone and reactivate it's normal cellular antenna and related circuitry and communicates with the cellular company's nearest cells.
• the proxy device since the proxy device has already also the normal antenna and its related circuits, it also is able to sense if there is any temporary problem with the cellular phone, and if for some reason the cellular phone cannot be reached or does not function, the headset can then temporarily communicate directly with the cellular company's nearest cells. In such a case, preferably it will for example indicates a sound from its earphone, alerting the user that he is again exposed to the microwave radiation, and preferably keep repeating this sound every few seconds, reminding the user all the time that he is currently using the headset in potentially unsafe mode.
• both the proxy and the cellular phone can also talk to other bluetooth or similar devices in the home or in the office, so for example they can automatically (or by changing a switch or pressing some key(s)) communicate with the computer or with the regular phone base, when they also have a bluetooth chip or similar device.
• the rechargeable batteries required for the communication with the cellular company's cells might make the proxy device heavier, which makes it less convenient to use as an earphone, preferably the proxy uses lighter batteries, such as for example the new patented Hydrogen based batteries from Nee, which also have a much faster recharge time than ordinary batteries, and also preferably uses more energy efficient speaker and earphone.
• the proxy is composed of two easily detouchable parts, so that preferably one part contains the heavier battery needed for cellular communications and the cellular antenna and its circuitry, and the other part contains at least the earphone and microphone and a lighter battery, and when the parts are physically coupled they are electrically connected, and when the user wants to use the proxy as headset he can remove and use just the needed part.
• the proxy is composed of two easily detouchable parts, so that preferably one part contains the heavier battery needed for cellular communications and the cellular antenna and its circuitry, and the other part contains at least the earphone and microphone and a lighter battery, and when the parts are physically coupled they are electrically connected, and when the user wants to use the proxy as headset he can remove and use just the needed part.
• the proxy is composed of two easily detouchable parts, so that preferably one part contains the heavier battery needed for cellular communications and the cellular antenna and its circuitry, and the other part contains at least the earphone and microphone and a lighter battery, and when the parts are physically coupled they are electrically connected
• the cellular phone itself is not changed at all and the two bluetooth chips or similar devices are not needed, and instead the proxy is capitalizing on the cellular phone's ability to lower its radiation level automatically depending on the distance to the nearest cell.
• the proxy preferably imitates the cell by making the phone believe that it is talking to a very close cell, and on the other hand it communicates with the cellular company's cell, as in solution 1.
• the ability to implement solution number 3 depends on the cellular communication protocol with the cell and on the extent and range by which the cellular phone is able to lower its radiation levels for very close cells. This solution can be useful for dealing with some currently existing cellular phones.
• Solution number 4 is similar to solution number 1, except that the proxy device is preferably physically coupled to the cellular phone at any convenient position or angle and extends the position of the cellular antenna away from the user's head as far as conveniently possible, preferably on a non-metallic rod, such as plastic.
• this angle can be changed by the user in various directions, preferably by using a ball-type hinge. So, for example, the proxy can position the cellular antenna upwards away from the head, or downwards, at the opposite direction than usual, as far from the brain as conveniently possible.
• this rod can be easily made longer or shorter by the user (preferably by telescopic design, or for example by being divided into several parts with one or more hinges between each two parts, so that it can be folded and unfolded in various ways).
• the cellular antenna's distance from the brain might be smaller than in the other solutions, so the reduction of the level of radiation that the user's brain is exposed to might be smaller than in the other solutions.
• the proxy can be also easily removed from its position on the phone and can also be used further away from the user's head, as in solution 1.
• the proxy can either be removed from its position on the phone and moved to the appropriate socket, or for example an auxiliary wire can be used that is removed when not recharging.
• Solution number 5 is the same as solution number 1, except that instead of the bluetooth or other short range wireless device it uses optic fiber or fibers for the communication between the cellular phone and the proxy device. Preferably, the optic fiber can be easily and modularly replaced if damaged.
• Solution number 6 is the same as solution number 2, except that instead of the bluetooth or other short range wireless device it uses optic fiber or fibers for the communication between the cellular phone and the proxy device. Preferably, the optic fiber and can be easily replaced if damaged.
• Solution number 7 is the similar to solution number 4, except that instead of the bluetooth or other wireless device it uses optic fiber or fibers for the communication between the cellular phone and the proxy device.
• the optic fiber can be folded or released (for example around part of the proxy, or around a small wheel which is attached either to the phone or to the proxy, preferably with a spring), so that the proxy can also be used further away from the user's head, as in solution 4.
• the optic fiber can be easily replaced if damaged.
• Fig. 1 is a schematic block diagram of a preferable arrangement of the system.
• Fig. 2 is a schematic illustration of preferable changes in the cellular phone's design and function in solution number 1.
• Fig. 3 is a schematic illustration of a preferable proxy device's design and function in solution number 1.
• Fig. 4 is a schematic illustration of preferable changes in the cellular phone's design and function in solution number 2.
• Fig. 5 is a schematic illustration of a preferable proxy device's design and function in solution number 2.
• Fig. 6 is a schematic illustration of a preferable proxy device's design and function in solution number 3.
• Fig. 7 is a schematic block diagram of a preferable variation where the proxy contains just a transducer and the phone can use a separate headset.
• Fig. 8 is an illustration of a preferable variation where the proxy device is coupled to the cellular phone and extends the position of the cellular antenna away from the user's head, as for example in solutions 4 & 7.
• cellular phone or “mobile phone” or “wireless phone” or “phone” or “telephone” as used throughout the patent, including the claims, can mean any device for communications through wireless and/or cellular technology, including for example Internet-enabled cellular phones, such as the Japanese DoCoMo, 3 rd Generation cellular communication devices, palm computers communicating by cellular and/or wireless technology, etc.
• Internet-enabled cellular phones such as the Japanese DoCoMo, 3 rd Generation cellular communication devices, palm computers communicating by cellular and/or wireless technology, etc.
• the cellular phone (1) communicates (both ways - to and from) through short range low energy wireless communication (2) with the proxy device (3), which communicates on its other end through normal cellphone microwave broadcast (4) (both ways - to and from) with the cellular company's nearest cell or cells (5).
• the cellular phone (21) contains a bluetooth chip or similar device (22) and uses it to communicate (both ways - to and from) with the proxy device (31 in Fig.3) instead of communicating normally with the cellular company's nearest cell or cells (5 in Fig.l).
• the proxy device 31 in Fig.3
• it has also still the normal cellular antenna and its related circuitry (23), so that it can communicate normally with the cellular company's nearest cell or cells (5 in Fig.l) whenever it is unable to reach the proxy (31 in Fig.3) for any reason.
• a sound and/or light 24
• the proxy device (31) contains a bluetooth chip or similar device (32) and uses it to communicate (both ways - to and from) with the cellular phone (21 in Fig.2) on one hand, and on the other hand has a typical cellular phone's antenna and related circuitry (33) for communicating (both ways - to and from) with the cellular company's nearest cell or cells (5 in Fig. 1).
• a CPU or CPUs (34) for its cellular protocol and for converting information (to and from) between the protocols of its two ends.
• the cellular phone (41) contains a bluetooth chip or similar device (42) and uses it to communicate (both ways - to and from) with the proxy device (51 in Fig.5) instead of communicating normally with the cellular company's nearest cell or cells (5 in Fig. 1). It has also still the normal cellular antenna and its related circuitry (43), so that it can communicate normally with the cellular company's nearest cell or cells (5 in Fig.l) whenever it senses that the user is communicating with it through the proxy device (51 in Fig.5) (acting as headset) instead of directly, and preferably also whenever the user is using the cellular phone directly but the phone is unable to reach the proxy (51 in Fig.5) for any reason.
• a bluetooth chip or similar device (42) uses it to communicate (both ways - to and from) with the proxy device (51 in Fig.5) instead of communicating normally with the cellular company's nearest cell or cells (5 in Fig. 1). It has also still the normal cellular antenna and its related circuitry (43), so that it can communicate normally with the
• the cellular phone has the appropriate logic, preferably in its CPU or CPUs (49), to operate in 2 different modes when communicating with the proxy (51 in Fig. 5), so that in mode 1 (when the user is using the phone directly) the phone preferably activates normally its built-in speaker (46) and microphone (47), disables its normal cellular antenna and related circuitry (43), and tells the proxy device (51 in Fig.5) through a special signal or signals on the bluetooth or similar channel to act as normal proxy.
• the proxy preferably activates normally its built-in speaker (46) and microphone (47), disables its normal cellular antenna and related circuitry (43), and tells the proxy device (51 in Fig.5) through a special signal or signals on the bluetooth or similar channel to act as normal proxy.
• the cellular phone can detect that it is being used directly by the user through either the fact that it is open and/or some keys have been pressed or through receiving a signal or signals from the proxy (51 in Fig.5) (through the bluetooth or similar channel) indicating that the proxy is not currently being used as a headset.
• the cellular phone_ deactivates its built-in speaker (46) and microphone (47), activates its normal cellular antenna and related circuitry (43), and tells the proxy device (51 in Fig.5) through a special signal or signals on the bluetooth channel to act as headset.
• the cellular phone can detect that it is not being used directly by the user through either the fact that it is closed and/or no keys have been pressed or through receiving a signal or signals from the proxy (51 in Fig.5) (through the bluetooth or similar channel) indicating that the proxy is indeed currently being used as a headset.
• the logic will also alert the user though an appropriate message to any situation where the proxy (51 in Fig.5) and cellular phone are not in compatible modes and are unable to agree on the mode for some reason.
• the proxy device (51) contains a bluetooth chip or similar device (52) and uses it to communicate (both ways - to and from) with the cellular phone (41 in Fig.4) on one hand, and on the other hand has a typical cellular phone's antenna and related circuitry (53) for communicating (both ways - to and from) with the cellular company's nearest cell or cells (5 in Fig. l).
• a CPU or CPU's (54) for its cellular protocol and for converting information (to and from) between its two protocols.
• the proxy device also has a preferably high level earphone (55) and microphone (56) and preferably it has the shape of a headset, or for example it folds when used as normal proxy and opens to the shape of a headset when used as headset.
• the proxy device also has the appropriate logic, preferably in its CPU or CPUs (54), to operate in 2 different modes when communicating with the cellular phone (41 in Fig.4), so that in mode 1 (when the user is using the phone directly) the proxy preferably deactivates its earphone (55) and microphone (56), activates its normal cellular antenna and related circuitry (53), and tells the cellular phone (41 in Fig.4) through a special signal or signals on the bluetooth or similar channel that it is currently functioning as normal proxy.
• the proxy device can detect that it is being used as normal proxy through either the fact that it is in closed position and/or some switch has been changed or through receiving a signal or signals from the cellular phone (41 in Fig. 4) (through the bluetooth or similar channel) indicating that the phone is currently being used directly by the user.
• the proxy activates its earphone (55) and microphone (56), deactivates its normal cellular antenna and related circuitry (53), and tells the cellular phone (41 in Fig.4) through a special signal or signals on the bluetooth channel that it is currently being used as headset.
• the proxy device can detect that it is currently being used by the user as headset through either the fact that it is open and/or some switch has been changed or through receiving a signal or signals from the cellular phone (41 in Fig.4) (through the bluetooth channel) indicating that the phone is currently regarding the proxy as a headset.
• the logic will also alert the user though an appropriate message to any situation where the proxy and cellular phone (41 in Fig.4) are not in compatible modes and are unable to agree on the mode for some reason.
• the cellular phone 41 in Fig.4
• it can also sense whenever the cellular phone (41 in Fig.4) is unreachable or does not function for some reason and then it can temporarily communicate directly with the cellular company's nearest cell or cells (5 in Fig.l).
• a sound preferably a short high pitch beep from its normal earphone
• it will indicate a sound (preferably a short high pitch beep from its normal earphone), in order to alert the user that he is again exposed to the microwave radiation, and preferably keep repeating this sound every few seconds to alert the user that he is still in unsafe mode.
• this Proxy device has also voice command activation in order to dial automatically when used as headset, however, it might have also a small set of keys that enable the user to dial directly if for some reason the voice activation does not function.
• the logic for the voice command activation may be either in the proxy or in the cellular phone. Or it might have the set of keys instead of the voice command
• the proxy device (61) can have for example two cellular antennas and use one of them (62) to communicate (both ways - to and from) with the cellular phone (1 in Fig.l) on one hand, and use the second cellular antenna (63 when communicating with the cellular phone and for converting) on the other hand for communicating (both ways - to and from) with the cellular company's nearest cell or cells (5 in Fig.l).
• the proxy uses a CPU or CPUs (64) for imitating the appropriate cell protocols information (to and from) between its two protocols.
• the proxy has just one cellular antenna instead of two.
• it can use for example fast timesharing so that the same antenna can communicate intermittently with the cellular phone (1 in Fig.l) and with the cellular company's cell or cells (5 in Fig.l), or use different frequencies to communicate at the same time both with said cellular phone (1 in Fig.l) and with the cellular company's cells (5 in Fig.l).
• the cellular phone (1) communicates (both ways - to and from) through short range low energy wireless communication (2) with the proxy device (3), which communicates on its other end, typically through normal cellphone microwave broadcast (4) (both ways - to and from) with the cellular company's nearest cell or cells (5).
• the proxy preferably includes just the transducer, in other words it just translates between the two communication protocols, using a normal cellular antenna on one end and a bluetooth chip or other short range low energy wireless communication device on the other end.
• the phone (1) preferably contains the short range communication device instead of the cellular antenna, in order to save energy & cost and preferably contains a lighter battery.
• the phone (1) can also communicate with optional headset (7) for example through short range low energy wireless communication or through normal wire (6).
• the proxy device (83) is preferably physically coupled to the cellular phone (81) at any convenient position or angle and extends the position of, the cellular antenna (84) away from the user's head as far as conveniently possible, preferably on a non-metallic rod (82), such as plastic.
• this angle can be changed by the user in various directions, preferably by using a ball-type hinge. So, for example, the proxy (83) can position the cellular antenna (84) upwards away from the head, or downwards, at the opposite direction than usual, as far from the brain as conveniently possible.
• this rod (82) can be easily made longer or shorter by the user (preferably by telescopic design, or for example by being divided into several parts with at least one hinge between each two parts, so that it can be folded and unfolded in various ways).
• the cellular antenna's distance from the brain might be smaller than in the other solutions, so the reduction of the level of radiation that the user's brain is exposed to might be smaller than in the other solutions.
• the proxy can be also easily removed from its position on the phone and can also be used further away from the user's head, as described in solution 1 of the patent summary.
• the proxy can either be removed from its position on the phone and moved to the appropriate socket, or for example an auxiliary wire can be used that is removed when not recharging.

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Citations (7)

• 2001
  • 2001-10-24 WO PCT/IL2001/000981 patent/WO2002035802A2/en active Application Filing
  • 2001-10-24 JP JP2002538650A patent/JP2004524721A/ja active Pending
  • 2001-10-24 CN CN01821026.0A patent/CN1579082B/zh not_active Expired - Lifetime
  • 2001-10-24 CA CA002426860A patent/CA2426860A1/en not_active Abandoned
  • 2001-10-24 AU AU2002212658A patent/AU2002212658A1/en not_active Abandoned
  • 2001-10-24 GB GB0301158A patent/GB2384133B/en not_active Expired - Fee Related

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