Source: https://patents.google.com/patent/EP0840465B1/en
Timestamp: 2019-11-15 14:28:40
Document Index: 451949446

Matched Legal Cases: ['art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 2', 'art 2', 'art 3', 'art 3', 'art 2', 'art 2', 'art 3', 'art 2', 'art 45', 'art 3', 'art 2', 'art 45', 'art 45', 'art 3', 'art 3', 'art 2', 'art 3', 'art 45', 'art 3', 'art 45', 'art 3', 'art 3', 'art 3']

EP0840465B1 - User interface for mobile telephone - Google Patents
User interface for mobile telephone Download PDF
EP0840465B1
EP0840465B1 EP19970660105 EP97660105A EP0840465B1 EP 0840465 B1 EP0840465 B1 EP 0840465B1 EP 19970660105 EP19970660105 EP 19970660105 EP 97660105 A EP97660105 A EP 97660105A EP 0840465 B1 EP0840465 B1 EP 0840465B1
EP19970660105
EP0840465A2 (en
EP0840465A3 (en
1997-10-06 Application filed by Nokia Oyj filed Critical Nokia Oyj
1998-05-06 Publication of EP0840465A2 publication Critical patent/EP0840465A2/en
2002-12-18 Publication of EP0840465A3 publication Critical patent/EP0840465A3/en
2004-12-29 Publication of EP0840465B1 publication Critical patent/EP0840465B1/en
2012-05-02 First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8546984&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0840465(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
230000000576 supplementary Effects 0 claims description 28
210000000707 Wrist Anatomy 0 description 133
The present invention relates to an apparatus in accordance with the preamble of the accompanying claim 1, and to a radio telephone in accordance with the preamble of the accompanying claim 10.
A radio telephone relates in this context to a wireless telephone whereby a radio communication can be arranged with a telecommunication network or another radio telephone. Hand-portable phone relates to a portable radio telephone, such as a mobile phone having a size and design suited for hand. The above definitions are based on publication No. TSK 19, "Matkaviestinsanasto - Vocabulary of Mobile Communications", published by Tekniikan sanastokeskus ry, Helsinki 1993.
Attempts have been made to overcome the drawback by placing the entire radio telephone on a wrist strap, wherein the wrist telephone would be easy to carry along and, when the phone starts ringing, it would be close to the user and therefore easy to answer. For instance European patent application EP-602828 introduces a solution where the radio telephone is placed to a wrist-watch type case. Most parts, including the microphone, of the radio telephone are positioned in the body of the case, mainly an earpiece being placed in the cover part. When a call is initiated, the cover part is opened, wherein the distance between the microphone and the earpiece can be increased, which facilitates the use of the wrist telephone. The above mentioned publication mainly attempts to describe the mechanical implementation of a wrist telephone. Also US-patent 5,260,915 introduces a solution for mechanical realization of a wrist telephone. In practice, the prior art provides no means for packing the radio telephone to be compact in a manner that it would be sensible to place it on wrist, inasmuch as reasonable operation times are desired for the phone. Batteries for known radio telephones are still considerably larger and heavier than the entire wrist strap, wherein adapting the radio telephone on the wrist strap would require that a very small battery was used, which, however, would mean that the operation time of the wrist telephone would be very short at a single charge.
The patent application publication DE 43 10 230 discloses a mobile, two-part subscriber terminal. The first part comprises the radio communication means and the second part comprises the user interface. This arrangement has the advantage that the user of the terminal is less affected by the radiation of the radio communication means because of the increased distance between the radio communication means and the user. The HF signals to be transmitted to a base station are amplified. It is also possible that the HF signals are changed so that the frequencies of the signals are changed. It is also mentioned that a certain pair of frequencies is used in the link between the two parts. Therefore, no tuning of the link receivers and link transmitters is necessary. The link frequency may also be defined by the frequency used in the call. This may cause situations that two (or more) similar two-part devices may disturb each other, for example, in a situation in which there is a call going on in both devices and they use the same frequency on the call. This means that both devices also try to use the same frequency on the local traffic channel.
The patent US 4,647,722 discloses a two-part communication device in which the first part comprises radio communication means, a microphone and a speaker, and the second part comprises a detachable handset. When the handset is attached to the first part the microphone and the speaker of the first part are in use. When the handset is detached from the first part, the microphone and the earpiece of the handset are in use. The local communication between the first part and the handset is arranged by FM transmitter and receiver. However, there is no disclosure in this document on the selection of a frequency for the local communication.
The patent application publication EP 0 665 655 discloses a cellular phone with infrared interface in the battery pack. The cellular phone and the device can communicate when the device is physically connected to the cellular phone, for example for charging the battery pack by the device. The communication between the battery pack and the device is performed by infrared.
An object of the present invention is to provide an improvement to the use of radio telephone comprising at least two parts, in particularly when several such telephones are operating within the same geographical area. The invention is based on the idea that the link channels used for communication between the at least two parts of the radio telephone are tied to the traffic channel reserved for the communication between telephone↔base station. To achieve this object, the radio telephone ties the link channels LlNK1, LINK2, LINK3 to the traffic channel (channel number) in a manner that each traffic channel of the telephone has a respective individual link channelThe apparatus according to the present invention is characterized by what is described in the characterizing portion of the accompanying claim 1. The radio telephone according to the present invention is characterized by what is described in the characterizing portion of the accompanying claim 10.
The present invention provides considerable advantages over solutions of prior art. When the link channels LINK1, LINK2, LINK3 are tied to the channel number in a manner that each traffic channel of the telephone, telephone↔base station, has a respective individual link channel, it is possible to eliminate disturbances between the telephone links. When the second part of the radio telephone of the invention is close to the user, e.g. on wrist, the telephone can easily be answered by keys or the like of the second part. Further, the whole call can be carried out by utilizing the second part only. Thus, the first part can under normal use circumstances be kept on a belt, in a pocket, bag or even in glove locker of a car during the whole call.
shows a radio telephone in accordance with the first advantageous embodiment of the invention,
shows a reduced block diagram of an advantageous alternative implementation of the first part of the radio telephone in accordance with the first advantageous embodiment of the invention,
shows a reduced block diagram of an advantageous alternative implementation of the second part of the radio telephone in accordance with the first advantageous embodiment of the invention,
shows a radio telephone in accordance with the second advantageous embodiment of the invention,
shows a radio telephone in accordance with the third advantageous embodiment of the invention,
shows a reduced block diagram of an advantageous alternative implementation of the data transfer means of the first part of the radio telephone in accordance with the third advantageous embodiment of the invention,
shows a reduced block diagram of an advantageous alternative implementation of the data transfer means of the second part of the radio telephone in accordance with the third advantageous embodiment of the invention,
shows a reduced block diagram of an advantageous alternative implementation of the data transfer means of the third part of the radio telephone in accordance with the third advantageous embodiment of the invention,
shows a radio telephone in accordance with the fourth advantageous embodiment of the invention,
shows a reduced block diagram of an advantageous alternative implementation of the data transfer means of the second part of the radio telephone in accordance with the fourth advantageous embodiment of the invention,
shows a reduced block diagram of the second advantageous alternative implementation of the control of link frequencies,
shows a reduced block diagram of the third advantageous alternative implementation of the control of link frequencies,
show still another construction for the second part 3 of the radio telephone according to the invention in a skeleton diagram, and
shows a modular radio telephone apparatus.
The wrist part 3 in accordance with the first embodiment of the invention comprises at least a supplementary earpiece 13, supplementary microphone 14, handset keys, i.e., key for answering the call 15, and key for terminating the call 16, as well as means 36 for creating an alarm signal. In addition, in the wrist part 3 in accordance with the first embodiment of the invention, a supplementary display device 11 is arranged for showing information corresponding to those shown on the display means 7 of the telephone part, e.g. the calling telephone number or the name of the person who calls. Furthermore, the wrist part 3 preferably comprises a wrist strap 17, wherein the wrist part 3 can easily be attached to the wrist so that, if necessary, it is carried along with the user. In Fig. 1a, the wrist part 3 is shown in a functional position, wherein a supplementary earpiece 13, attached at a second end of an attachment arm 18, is drawn out of a first wrist case 19a. Thus, the distance between the supplementary earpiece 13 and the supplementary microphone 14 nearly corresponds to the distance between the ear and the mouth of the user. When the wrist part 3 is mounted on the wrist, the supplementary earpiece 13 is situated at the hollow of the hand. The palm is placed against the ear, wherein the supplementary earpiece 13 is very close to the ear and the supplementary microphone is close to the mouth. The hollow of the hand is around the ear, which attenuates the influence of external noises and thus improves the understandability of the speech. After the call is terminated, the supplementary earpiece 13 is pushed back to the first wrist case 19a and the call terminating key 16 is pushed.
The analog radio phone 1 in accordance with the first advantageous embodiment of the invention operates as follows. By means of its menu functions (not shown) the radio phone 1 is set to UAI operation mode (User Air Interface), wherein the link module 10 is in use. When a call arrives to the telephone part 2, the creation of the first link communication LINK1 is initiated. The receiver 21 of the link module of the telephone part 2 is set to scan the reception band selected for the first link communication, e.g. by switching a voltage in a form of a triangular wave to a scan line and by closing the switch S1. The triangular wave is created e.g. by digital/analog converter (D/A) of a controller 27. The triangular wave is directed via the switch S1 and the resistance R1 to a capacitance diode D1. A change in the voltage between the conductors of the capacitance diode D1 causes a change in the capacitance of the capacitance diode D1. The capacitance diode D1 is coupled to the frequency control circuit of a local oscillator 20 of the link module, wherein the frequency of the local oscillator 20 of the link module changes in relation to the change in the voltage of the scan line. The frequency created by the local oscillator 20 of the link module is directed to a mixer 22 of the receiver of the link module. A reception antenna circuit of the link module is connected to the mixer 22, receiving circuit comprising a reception antenna 23 of the link module, first band-pass filter 24 and high-frequency amplifier 58 of the receiver of the link module. The pass band set to the first band-pass filter 24 is the frequency range of the reception band selected for the first link communication, wherein such radio frequency signals which are situated within said frequency range are directed to the mixer. From the output of the mixer 22, a mixing result is obtained which is the difference between signals of the local oscillator frequency and the radio frequency to be received, said difference being directed to the detector 26 via a second band-pass filter 25. The width of the pass band of the second band-pass filter 25 corresponds substantially to the width of the channel, wherein the signals situated possibly in adjacent channels cause no disturbance to the demodulation. From the output of the detector, a demodulated signal 42 is obtained. The demodulated signal is further directed to a low-pass filter 75, the low-pass filtered signal is passed to a AFC-line, the voltage level of which is monitored during the scanning by a link module controller 27. In the apparatus of Fig. 1b monitoring is performed by analog/digital converter (AID) of the controller 27, said converter converting the voltage value to a digital value which is processed in the application software of the controller 27. The voltage level of the AFC line is relative to the DC level of the output of the detector 26. When the signal transmitted by the wrist part is being received, the AFC line can be used for keeping the local oscillator frequency of the receiver locked to the carrier frequency of the signal transmitted by the wrist part.
The controller 27 concludes on the basis of the voltage level of the AFC line whether the reception band has other communication. If no other communication exists, any channel frequency of the reception band can be tuned in. In case other communication is found, a vacant channel has to be selected on the reception band. In case there is no vacancy, no communication with the wrist part can be created on the selected reception band. In case a vacant space is found, the receiver is turned to the respective channel frequency, i.e., a control voltage corresponding to the selected channel frequency is set to the capacitance diode D1. Thus, the capacitance of the capacitance diode D1 sets the frequency of the local oscillator 20 of the link module to correspond to the selected channel frequency. At the same time when the receiver of the link module is tuned to the correct channel frequency, also the transmitter of the link module is tuned to the frequency of the duplex separation, because in the present embodiment the local oscillator 20 of the link module is common to both the receiver 21 of the link module and to the transmitter 28 of the link module.
One mechanical implementation principle of the wrist part 3 is shown in Fig. 1a. The transmitter/receiver 33, 39, controller 34, earpiece 13 and the microphone 14 of the wrist part are placed in the first wrist case 19a. The display means 11 and handset keys 15, 16 are placed in the second wrist case 19b. The transmission and reception antennas 53, 57 of the wrist part can be attached to the wrist strap 17, as well as the signal wires (not shown) between the first and second wrist case.
Thus, the wrist part 3 in accordance with the first embodiment of the invention is parallel with the user interface of the telephone itself, wherein the telephone part 2 can be used as a normal telephone, e.g. when the wrist part communication does not work due to external disturbances or other reasons. Although in the accompanying Figs. 1a, 2, 3a and 4, the link module 10 is shown as a separate module connected to a telephone, it is possible to place the operations of the link module also into the telephone.
In practical embodiments of the transmitter/receivers of the wrist part and the link module, it is possible to use intermediate frequency circuits 43, 43' (IF) used e.g. in analog radio telephones, said intermediate frequency circuits comprising among other things a mixer, high-frequency and low-frequency amplifiers, limiter, and detector. The sensitivity of the circuits is sufficient for this purpose. The circuits are economical and they have a low power consumption. Further, for the implementation of the transmitter there exist ready-made FM modulators 44, 44'. The wrist part in accordance with the invention can also be non-chargeable battery operated because its power consumption can be made very low.
A radio telephone 1 in accordance with the third advantageous embodiment of the invention, shown in Figs. 3a to 3d, is divided into three parts. The data transfer communication between the second and third part is in this context referred to as a second link communication LINK2, and the data transfer communication between the first and the second part is referred to as a third link communication LINK3. The first part, i.e., the telephone part, corresponds, in view of its substantial portions, to the telephone part 2 of the first embodiment. The second part, i.e., the wrist part 3, comprises a display device 11 and handset keys 15, 16 as well as data transfer means for the first link communication LINK1 for communication with the telephone part 2 and data transfer means for the second link communication LINK2 for communication with the third part, i.e., with the headset part 45. In this embodiment, the wrist part 3 functions as a repeater for the audio signals in data transfer between the telephone part 2 and the headset part 45. The headset part 45 comprises primarily audio parts, such as a supplementary earpiece 13 and a supplementary microphone 14, as well as communication means for the second link communication LINK2 for communication with the wrist part 3. In the wrist part 3, no detection is performed to audio signals travelling to either directions. Data signals transmitted from the link module are transferred between the telephone part 2 and the wrist part 3, but these are not directed to the headset part 45. However, between the wrist part 3 and the headset part 45 also data signals, such as a password, can be transferred to ensure that the handset part communicates with the right wrist part. The circuit diagram of Fig. 3d shows the communication means of the headset part for the second link communication LINK2 which comprises a transmitter 70, receiver 73, transmission and reception antennas 71, 72 and a local oscillator 69, whose frequency is controlled by capacitance diode D5. In view of the function of the communication means, reference is here made to an earlier illustration in this description of the operation of the transmitter/receivers 39, 33 of the wrist part.
Figures 7a and 7b show still another construction for the second part 3 of the radio telephone according to the invention in a skeleton diagram. The second part 3 is arranged in connection with spectacles 79, sunglasses or the like. A supplementary earphone 13 is arranged advantageously in the earpiece 81 of the first arm 80 of the spectacles, for example inside the earpiece 81. A supplementary microphone 14 is placed in this embodiment at the first end 82a of an auxiliary arm 82. The auxiliary arm is fixed with hinges from the second end 82b of the auxiliary arm to the first arm 80 of the spectacles. The second part 3 comprises advantageously also means for answering a call, arranged e.g. with a switch (not shown) placed at the second end 82b of the auxiliary arm so that when the second part is in standby (Fig. 7a), the switch is in the first state, for example open. When answering to an incoming call, the auxiliary arm 82 is turned downwards, as shown in Fig. 7b. The switch is then in the second state (closed), whereby the controller 34 of the second part detects the change in the state of the switch and starts setting up a link connection, as described above in this description. Upon terminating the call, the auxiliary arm 82 is turned back substantially parallel to the arm 80, whereby the switch changes its state and the link connection can be closed. In this advantageous embodiment, it is possible to use solutions presented above in this description for implementation of the transceiver of the second part, the controller etc. In Figs. 7a and 7b, the reference numeral 84 indicates a housing where these can be advantageously accommodated. The wirings between the auxiliary earphone 13, the auxiliary microphone 14, the transceiver, etc. are arranged e.g. inside or on the outer surface of the arms 80, 83.
The third advantageous embodiment of the control of link frequencies, as shown in Fig. 6, comprises a synthesizer 52 for creating a link frequency- In this embodiment, the synthesizer comprises a phase locked loop (PLL) and a voltage controlled oscillator (VCO). The control voltage of the voltage controlled oscillator is changed by changing the division ratio in the phase locked loop, wherein the frequency of the voltage controlled oscillator is changed. The controller 50 of the radio part has the information of the frequencies/time slots used by the transmitter/receiver 49 of the radio part, i.e., the traffic channel. By utilizing this information, the processor unit 50 of the radio part controls the synthesizer 52 of the link in order to set the link frequency. The processor unit simultaneously attends to that the link frequency has predetermined frequency difference to the transmission and reception frequency of the transmitter/receiver 49 of the radio part.
Each telephone present in the same cell has an individual traffic channel (channel number) by which it communicates with the base station. When the link channels LINK1, LINK2, LINK3 are tied to the channel number in a manner that each traffic channel of the telephone, telephone↔base station, has a respective individual link channel, it is possible to eliminate disturbances between the telephone links.
Further, it is possible to use time division on the link channels LINK1, LINK2, LINK3 of digital telephones, in a manner that traffic channels, telephone↔base station in the same frequency transfer the data of the time slot they had used to the link LINK. This data is present in the processor unit 50 of the radio part, the processor unit being capable of controlling the PLL unit 52 and the control unit 27 of the link module. Thus, the link of each telephone operates only within the time slot reserved therefor and disturbances between the telephones are prevented. Since the link LINK frequency is different from the frequency of the traffic channel, it may be that the time slots used by the link are different than the time slots of the traffic channel as long as each traffic channel or group of channels has its respective individual link channel. Also, frequency hopping can be used in the link, so that each link channel has its own individual hopping sequence, which prevents disturbances between the telephones.
In the link, it is also possible to use spread spectrum communication of the CDMA system, wherein each link channel has a different pseudorandom binary sequence, wherein disturbances between telephones which are close to each other is prevented. Here as well, it is substantial that each traffic channel or group of channels, telephone↔base station, has a respective different pseudorandom binary sequence in the link.
Figure 8 shows a modular radio telephone apparatus indicated generally by the reference numeral 84. The apparatus comprises a core module unit 85 consisting of a housing 86 and, contained within the housing, a radio transceiver (transmitter/receiver) 87. The transceiver 87 functions in the manner described above, with reference to the embodiments of Figures 1 to 7, to communicate with a cellular radio telephone network 88, e.g. a GSM network. The core module 85 does not have a conventional telephone user interface and a user cannot make or receive a telephone call using the core module 85 alone.
The core module 85 communicates with one of a number of 'peripheral' modules 89, 90 91, each of which contains an independent power supply (not shown). Shown in figure 8, by way of example, are three peripheral modules which each provide a different user function. A first module 89 is a credit card sized module comprising a microphone 92, an earpiece 93, a numeric keypad 94, and an LCD display 95. Each of these components is coupled to a data processor 96 within the module which is in turn coupled to a low power radio transceiver 97. This transceiver 97 is able to communicate wirelessly with a corresponding low power transceiver 98 in the core module 85. The peripheral module 89 therefore provides a first user interface for the apparatus 84 allowing a user to make and receive voice calls via the core module 85.
A second module 90 illustrated in Figure 8 has the form of a palm-top computer or personal digital assistant (PDA) containing a microprocessor (not shown). The module 90 again contains a low power transceiver 97 for communicating with the core module 85. The second module may be used to make and receive data calls, e.g. short message service (SMS), facsimile, and e-mail.
From the detailed description given above with reference to Figures 1 to 7, it will be understood how the 'link' connection between the core module 85 and the peripheral modules 89, 90, 91 may be implemented. It will also be apparent how the peripheral modules may be operated interchangeably with the core module.
Apparatus (1) for wirelessly communicating with a mobile telephone network, the apparatus comprising;
a first unit (2) having a power supply (65), a radio transceiver (4) with an antenna (5) for communicating with the mobile telephone network over a network traffic channel, a different time slot or an individual pseudorandom binary sequence which is reserved for each network traffic channel on the same frequency, and first local wireless communication means (21, 28); and
a second unit (3) having data processing means (34) and second local wireless communication means (33, 39) arranged to communicate over a local traffic channel with said first local wireless communication means (21, 28) to transfer data between the data processing means (34) and said radio transceiver (4),
wherein in use said local traffic channel is determined by said network traffic channel, characterized in that said local traffic channel is tied to said network traffic channel so that the same time slot or the individual pseudorandom binary sequence, which is reserved for said network traffic channel over which the radio transceiver (4) is communicating with the mobile telephone network, is arranged to be used by said local traffic channel.
Apparatus according to claim 1, wherein in use said local traffic channel is identified to the apparatus (1) by a message transmitted via said network traffic channel.
Apparatus according to any one of the preceding claims, and comprising a plurality of said second units (3) which provide respective different user functions.
Apparatus according to claim 3, wherein in use the local traffic channels of the second units (3) are different from one another, but are all tied to said network traffic channel.
Apparatus according to any one of the preceding claims, wherein said first unit (2) does not have a radio telephone user interface (6, 8, 9, 15).
Apparatus according to any one of the preceding claims, wherein said first unit (2) has a radio telephone user interface (6, 8, 9, 15).
Apparatus according to claim 3, wherein at least one of said second units (3) comprises means (15) for answering a telephone call received by said first unit (2) and a second of said units (3) comprises an earphone (13) and a microphone (14) coupled to the data processing means (34) thereof.
Apparatus according to any one of the preceding claims, wherein the second unit (3), or one of the second units (3), comprises a measuring device (91) for measuring a physical parameter, said measuring device (91) being coupled to the data processing means (100) thereof whereby a measured parameter can be transmitted to the radio transceiver (4) of the first unit (2).
Apparatus according to claim 8, wherein said measuring device (91) is arranged to measure the glucose level in a blood sample.
A radio telephone (1) comprising at least a power supply (65), radio part (4) with an antenna (5) for communicating with a mobile telephone network over a network traffic channel, a different time slot or an individual pseudorandom binary sequence is reserved for each network traffic channel on the same frequency, and the radio telephone (1) further comprising a user interface having at least one microphone (9, 14), at least one earpiece (8, 13), means (6, 66) for making a call and means (15) for answering a call, the radio telephone (1) is divided at least into a first part (2) and a second part (3), the first part (2) comprising at least the power supply (65), radio part (4), antenna (5) of the radio part (4), and means (21, 28) for communicating on a first link communication (LINK1) with the second part (3), the second part (3) comprising at least the means (15) for answering a call, and means (33, 39) for communicating with the first part (2), characterized in that in use said first link communication (LINK1) is determined by said network traffic channel so that the same time slot or the individual pseudorandom binary sequence, which is reserved for said network traffic channel over which the radio part (4) is communicating with the mobile telephone network, is arranged to be used by said first link communication (LfNK1).
A radio telephone (1) as set forth in claim 10, characterized in that it is divided into a first part (2), a second part (3) and a third part (45), that a user interface (6, 8, 9, 15) is positioned to the first part (2), that the second part (3) further comprises means (46, 47) for communicating with the third part (45), and that a supplementary earpiece (13) and a supplementary microphone (14) are positioned to the third part (45) which further comprises means (70, 73) for communicating with the second part (3).
A radio telephone (1) as set forth in claim 10, characterized in that it is divided into a first part (2), a second part (3) and a third part (45), and that means (66) for making a call and means (15) for answering a call are positioned to the second part (3), which further comprises means (46, 47) for communicating with the third part, and that a supplementary earpiece (13) and a supplementary microphone (14) are placed to the third part (45) which further comprises means (70, 73) for communicating with the second part (3).
A radio telephone (1) as set forth in any of the claims 10 to 12, characterized in that at least means (21, 28) of the first part for communicating on the first link communication (LINK1) with the second part (3), and means (33, 39) of the second part for communicating with the first part (2) are arranged to be occasionally switched on in order to lower power consumption.
A radio telephone (1) as set forth in any of the claims 10 to 13, characterized in that the first link communication (LINK1) between the first (2) and second (3) part is a bi-directional radio communication, wherein the signals transferred from the first part (2) to the second part (3) are arranged to be transmitted on a transmission frequency band (uplink), and the signals transferred from the second part (3) to the first part (2) are arranged to be transmitted on a reception frequency band (downlink), wherein each transmission frequency and reception frequency used are preferably situated at a constant distance from each other (duplex separation).
A radio telephone (1) as set forth in claim 14, characterized in that data transfer in the first link communication (LINK1) is arranged to be performed as frequency modulated signals, wherein the first part (2) comprises a link module (10) having a transmitter (28) for transmission of signals transferred from the first part (2) to the second part (3), and a receiver (21) for reception of signals transferred from the second part (3) to the first part (2), and the second part (3) comprising a transmitter (39) for transmission of signals transferred from the second part (3) to the first part (2), and a receiver (33) for reception of signals transferred from the first part (2) to the second part (3).
A radio telephone (1) as set forth in claims 14 or 15, characterized in that
- a transmitter (28) of the link module and a transmitter (39) of the second part are arranged to be switched on only during the call, and
- a receiver (21) of the link module and a receiver (33) of the second part are arranged to be switched on periodically in order to check whether there exists messages in the first link communication (LINK1), and during a call.
A radio telephone (1) as set forth in claim 15, characterized in that the link module (10) comprises means (20, 21, 27, 28, D1) for selecting the transmission and reception frequency used in each separate case in the first link communication (LINK1).
A radio telephone (1) as set forth in claim 17, characterized in that the selection of transmission and reception frequency used in each separate case in the first link communication (LINK1) is arranged to be carried out by adjusting a local oscillator (20) of the link module according to the frequency set to a local oscillator (51) of the radio part.
A radio telephone (1) as set forth in claim 18, characterized in that the difference of the frequency of the local oscillator (20) of the link module and the frequency of the local oscillator (51) of the radio part is constant.
A radio telephone (1) as set forth in claim 17, wherein one or several traffic channels are arranged to be used in the communication,
characterized in that a link channel corresponding to each traffic channel or specific channel group is arranged to the link communications (LINK1, LINK2, LINK3).
A radio telephone (1) as set forth in claim 18, characterized in that it is a digital telephone in which, in communication in traffic channel, a time division (TDMA) is arranged to be used, wherein in each traffic channel different time slots are arranged to be used, and that time division is arranged to be used in link channels, wherein different time slot is arranged to be used in each link channel.
A radio telephone (1) as set forth in claim 20, characterized in that spread spectrum communication is arranged to be used on link channels, wherein an individual pseudorandom binary sequence is arranged for each link channel.
A radio telephone (1) as set forth in claims 11 or 12, characterized in that the difference of the transmission frequencies (uplink) used in the first (LINK1) and second (LINK2) link communications at a time is constant.
A radio telephone (1) as set forth in claim 11 or 12, characterized in that audio signals are arranged to be transferred directly between the first (2) and third (45) part, wherein the first part further comprises a transmitter/receiver for communication with the third part (45), and the third part (45) further comprises a transmitter/receiver (70, 73) for communication with the first part (2).
A radio telephone (1) as set forth in any of the preceding claims 10 to 24, characterized in that at least an auxiliary earphone (13) and an auxiliary microphone (14) are placed in connection with spectacles (79).
A radio telephone (1) as set forth in any of the preceding claims 10 to 25, characterized in that identification of the second part (3) of the radio telephone is arranged to take place by transmitting a password from the first part (2) to the second part (3) with means (34) for examining the password, and that the password is the equipment identification (IMEI) of the radio telephone.
EP19970660105 1996-10-31 1997-10-06 User interface for mobile telephone Expired - Lifetime EP0840465B1 (en)
EP0840465A2 EP0840465A2 (en) 1998-05-06
EP0840465A3 EP0840465A3 (en) 2002-12-18
EP0840465B1 true EP0840465B1 (en) 2004-12-29
EP19970660105 Expired - Lifetime EP0840465B1 (en) 1996-10-31 1997-10-06 User interface for mobile telephone
AU8205898A (en) * 1997-05-13 1998-12-08 Siemens Aktiengesellschaft Wristwatch as an external display device for a mobile transceiver
EP1064730B1 (en) * 1998-03-26 2003-05-21 Siemens Aktiengesellschaft Radio device
EP1092291B1 (en) * 1998-06-29 2003-03-26 Siemens Aktiengesellschaft Transmission of data by ultrasound
AU7457701A (en) * 2000-06-21 2002-01-02 Seiko Epson Corporation Watch-shaped information processing device and mobile telephone
CA2432540C (en) 2000-11-07 2008-06-10 Research In Motion Limited Communication device with multiple detachable communication modules
ES2281510T3 (en) * 2002-01-30 2007-10-01 Telefonaktiebolaget Lm Ericsson (Publ) Method and system for the transmission of carriage signs between a first and a second network of antennas.
AU2003271755A1 (en) * 2002-09-09 2004-04-30 Vertu Ltd Cellular radio telephone
DE60326775D1 (en) 2003-05-28 2009-04-30 Nokia Corp Method and radio device arrangement for displaying an incoming connection
AU2003302937A1 (en) * 2003-10-09 2005-04-21 Vladimir Victorovich Antonov Cellular telephone body
CA2864691C (en) 2012-02-17 2018-05-01 Oakley, Inc. Systems and methods for removably coupling an electronic device to eyewear
US20160018899A1 (en) 2014-07-18 2016-01-21 Apple Inc. Detecting loss of user focus in a device
CN106303061B (en) * 2014-08-21 2019-07-30 苏州佳世达电通有限公司 A kind of means of communication, communicating terminal and terminal system
FI111674B (en) 2003-08-29
Ref document number: 69732081