WO2004080043A1 - Wireless communication system for vehicle-based private and conference calling and method therefore - Google Patents
Wireless communication system for vehicle-based private and conference calling and method therefore Download PDFInfo
- Publication number
- WO2004080043A1 WO2004080043A1 PCT/IB2004/000125 IB2004000125W WO2004080043A1 WO 2004080043 A1 WO2004080043 A1 WO 2004080043A1 IB 2004000125 W IB2004000125 W IB 2004000125W WO 2004080043 A1 WO2004080043 A1 WO 2004080043A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wireless
- wireless terminal
- communication link
- accessory
- audio
- Prior art date
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
- H04M1/6041—Portable telephones adapted for handsfree use
- H04M1/6075—Portable telephones adapted for handsfree use adapted for handsfree use in a vehicle
- H04M1/6083—Portable telephones adapted for handsfree use adapted for handsfree use in a vehicle by interfacing with the vehicle audio system
- H04M1/6091—Portable telephones adapted for handsfree use adapted for handsfree use in a vehicle by interfacing with the vehicle audio system including a wireless interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
- H04M1/6041—Portable telephones adapted for handsfree use
- H04M1/6058—Portable telephones adapted for handsfree use involving the use of a headset accessory device connected to the portable telephone
- H04M1/6066—Portable telephones adapted for handsfree use involving the use of a headset accessory device connected to the portable telephone including a wireless connection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
-
- 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
- H04B1/385—Transceivers carried on the body, e.g. in helmets
- H04B2001/3866—Transceivers carried on the body, e.g. in helmets carried on the head
Definitions
- the present invention relates to wireless communication devices and, more particularly, to wireless communication devices that support handsfree operation.
- BluetoothTM wireless technology has been implemented to provide a bidirectional wireless audio communication link between a handsfree accessory and a cellular phone.
- a driver of a vehicle may utilize a BluetoothTM compatible. headset 10 to conduct a private telephone call with a remote call recipient.
- This telephone call may initially be established as an incoming or outgoing call using a wireless terminal 20.
- a bidirectional wireless audio communication link 30 may be established between the wireless terminal 20 and the headset 10.
- the control signal may be automatically generated within the wireless terminal 20 in response to preconfigured settings or the control signal may be generated in response to action by the driver.
- the driver may initially access the wireless terminal through its keypad and display in order to set up the link 30 once the call has been established.
- FIG. 1A of the O27 patent illustrates a BluetoothTM enabled mobile cellular handset D 0 that operates as a "master" device in a piconet that includes a plurality of BluetoothTM enabled “slave” devices D 2 -D n .
- a group conference call may be achieved by initially establishing a call between the master device D 0 and a first call recipient D This first call may require the use of a base station 12 located in proximity to the master device D 0 .
- This first call recipient is then placed on hold while a series of additional group members are contacted individually and placed on hold until all members of a call group have been properly contacted. Once all members have been properly contacted, the "on-hold" condition associated with each member of the group is released and the group conference call is commenced.
- Wireless communication systems can include a wireless terminal that is configured to support private and conference calling in a handsfree environment, such as a vehicle environment.
- Typical wireless terminals include cellular telephones and PCS and PDA handsets, for example.
- a wireless communication system for vehicle-based private and conference calling includes a wireless terminal having both private and conference call capability.
- the wireless terminal is configured to support bidirectional wireless audio communication with a vehicle-based user headset and a vehicle-based conference accessory.
- This conference accessory may be a handsfree accessory that is permanently mounted or integrated within the vehicle.
- the wireless terminal operates as a switching node that is configured to support uninterrupted transfer of an already established first bidirectional wireless audio communication link from the headset to the conference accessory. This transfer operation may be made in response to a first command, such as a voice command from a driver of the vehicle. This first command may also be entered into the wireless terminal using conventional techniques (e.g., keypad entry using a menu-based display).
- the wireless terminal is further configured to support uninterrupted return of the first wireless audio communication link from the conference accessory to the headset. This return operation may be made in response to a second command, which may also be a voice command.
- the first bidirectional wireless audio communication link may be established as a spread spectrum (e.g., 2.4 GHZ spectrum), frequency hopping, full-duplex signal that hops at 1 MHz intervals.
- a wireless communication system for private and conference calling includes a wireless terminal that is configured to support bidirectional wireless audio communication with a handsfree accessory and a conference accessory.
- the wireless terminal operates as a switching node that is configured to convert a first bidirectional wireless audio communication link, which extends between the wireless terminal and the handsfree accessory, into a second bidirectional wireless audio communication link, which extends between the wireless terminal and the conference accessory. This conversion operation may be performed in response to a first command.
- the wireless terminal is also configured to terminate the second bidirectional wireless audio communication link and reestablish the first bidirectional wireless audio communication link. These operations may be responsive to a second command.
- Additional embodiments of the present invention include a wireless terminal that is configured to support wireless communication with first and second handsfree (or handheld) accessories.
- the wireless terminal operates as a switching node that is configured to generate an outgoing first wireless communication link from the wireless terminal to the first accessory and simultaneously generate an alternative format version of the outgoing first wireless communication link from the wireless terminal to the second accessory.
- This alternative format version of the outgoing first wireless communication link may be a format that is compatible with devices that do not generate acoustic signals. For example, devices such as printers and displays or other devices that support communication with a hearing- impaired member of a conference call may be used.
- Still further embodiments of the present invention include a wireless terminal that is configured to support bidirectional wireless audio communication with a plurality of vehicle-based audio accessories having different call priorities.
- the wireless terminal includes a communication control circuit that is configured to at least periodically monitor an active/inactive state of a first one of the plurality of audio accessories (e.g., headset) having a highest call priority.
- the control circuit is further configured to automatically switch an active bidirectional wireless audio communication link from the first one of the plurality of audio accessories to a second one of the plurality of audio accessories having a next highest call priority (e.g., conference accessory) upon detection that the first one of the plurality of audio accessories has become inactive.
- the control circuit is also configured to automatically switch the active bidirectional wireless audio communication link back from the second one of the plurality of audio accessories back to the first one of the plurality of audio accessories upon detection that the first one of the plurality of audio accessories has become active again. In this manner, it is not necessary to generate a voice command or manually access the wireless terminal in order to have the terminal switch back and forth from one audio accessory to another audio accessory.
- the first one of the plurality of audio accessories may be a vehicle-based headset and the second one of the plurality of audio accessories may be a vehicle-based conference accessory.
- the communication control circuit may also include programmable storage elements that are configured to retain the call priorities and enable reordering of the high-to-low call priority hierarchy, if necessary.
- Embodiments that use call priorities to facilitate audio link switching also include a wireless terminal having a communication control circuit therein that is configured to detect an active-to-inactive transition (i.e., on-to-off transition) of a first one of the plurality of accessories having a highest priority and is further configured to automatically switch an active wireless communication link from the first one of the plurality of accessories to a second one of the plurality of accessories having a next highest priority upon detection of the active-to-inactive transition.
- the control circuit is also configured to detect an inactive-to-active transition (i.e., off-to-on transition) of the first one of the plurality of accessories. When this transition is detected, the control circuit operates to automatically switch the active wireless communication link from the second one of the plurality of accessories back to the first one of the plurality of accessories.
- Still further embodiments of the present invention include methods of conducting a private conversation with the remote call recipient using a vehicle-based headset that communicates with a wireless terminal using a bidirectional wireless audio communication link.
- An operation is then performed to switch from the private conversation to a public conference with the call recipient, by redirecting the bidirectional wireless audio communication link from the headset to a vehicle-based handsfree conference accessory, using the wireless terminal as a switching node.
- This redirecting operation is preferably performed without interruption of the call with the recipient.
- an operation is performed to return to the private conversation by redirecting the bidirectional wireless audio communication link from the conference accessory to the headset, again without interruption.
- Figure 1 illustrates wireless communication between a headset and a wireless terminal, according to the prior art.
- Figure 2 illustrates wireless communication between a headset and a wireless terminal and between a handsfree accessory and the wireless terminal, according to an embodiment of the present invention.
- Figure 3 is a flow diagram of operations that illustrates methods of conducting a vehicle-based conference call with a remote call recipient according to embodiments of the present invention.
- Figure 4 is a block diagram of the wireless terminal of Figure 2, according to an embodiment of the present invention. Description of Preferred Embodiments The present invention now will be described more fully herein with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like reference numerals refer to like elements throughout.
- a wireless terminal 120 is illustrated as operating in a handsfree environment that includes a headset 100, as one handsfree accessory, and another handsfree accessory 110.
- the handsfree accessory 110 may be treated as a conference accessory having speaker and microphone elements (not shown) therein. These elements may be of conventional design.
- the conference accessory may be a handsfree accessory that is permanently mounted or integrated within the vehicle.
- the wireless terminal 120 preferably operates as a switching node that supports a first bidirectional wireless audio communication link 130A to the headset 100.
- This first communication link 130A may also be switched without interruption to the handsfree accessory 110 and thereby operate as a second bidirectional wireless audio communication link 130B, and vice versa. These switching operations are performed in response to respective commands, which may include voice or other commands.
- respective commands which may include voice or other commands.
- only one of the communication links is active at a time.
- at least one of the communication links may be a non-audio signal.
- the communication links 130A and 130B may also be established using BluetoothTM wireless technology. Accordingly, the communication links may be established as a spread spectrum (e.g., 2.4 GHZ spectrum), frequency hopping, full-duplex signals that hop at 1 MHz intervals.
- FIG. 4 A detailed block diagram of the wireless terminal 120 of Figure 2 is illustrated in Figure 4.
- the wireless terminal 120 is illustrated as including a portable housing 121, a keyboard/keypad 150, a display 140, a speaker 160, a microphone 162, a transceiver 124, and a memory 164 that is configured to communicate with a controller 170.
- the transceiver 124 includes a transmitter circuit 126 and a receiver circuit 128, which, respectively, transmit outgoing radio frequency signals to a base station transceiver (not shown) and receive incoming radio frequency signals from the base station transceiver, via an antenna 122.
- the radio frequency signals transmitted between the wireless terminal 120 and the base station transceiver may comprise both traffic and control signals (e.g., paging signals/messages for incoming calls), which are used to establish and maintain communication with another remote party or destination.
- the transceiver 124 may further operate to provide signals to the I/O circuit 148.
- wireless terminal may include a cellular radiotelephone with or without a multi-line display; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; and a Personal Data Assistant (PDA) that can include a radiotelephone, pager, Internet/intranet access, Web browser, organizer, calendar and/or a global positioning system (GPS) receiver.
- PCS Personal Communications System
- PDA Personal Data Assistant
- the controller 170 may include a speech/data processing circuit 176 as well as other functional modules not illustrated in Figure 4 but which will be understood to those of skill in the arts related to wireless communications including both data and voice communication support.
- the speech/data processing circuit 176 may include components such as demodulators, decoders, interleavers and RF processor circuitry.
- the controller 170 such as a microprocessor, microcontroller or similar data processing device, may execute program instructions stored in the memory 164, such as a dynamic random access memory (DRAM), electrically erasable programmable read- only memory (EEPROM) or other storage device.
- DRAM dynamic random access memory
- EEPROM electrically erasable programmable read- only memory
- the transceiver 124, the speech/data processing circuit 176 and other components of the wireless terminal 120 may be implemented using a variety of hardware and software elements.
- operations of the transceiver 124 and/or the speech/data processing circuit 176 may be implemented using special-purpose hardware, such as an application specific integrated circuit (ASIC) and programmable logic devices such as gate arrays, and/or software or firmware running on a computing device such as a microprocessor, microcontroller or digital signal processor (DSP).
- ASIC application specific integrated circuit
- DSP digital signal processor
- functions of the transceiver 124 and the other circuits shown in Figure 4 may be integrated in a single device, such as a single ASIC microprocessor, they may also be distributed among several devices.
- circuits may also be combined in one or more devices, such as an ASIC, DSP, microprocessor or microcontroller.
- ASIC application-specific integrated circuit
- DSP digital signal processor
- microprocessor microcontroller
- circuits may use hardware, software, or a combination of hardware and software and are generally referred to herein as "circuits.” As described more fully in U.S.
- a feature use circuit (not shown), which may be disposed within the controller 170 of the wireless terminal 120, can be configured to collect telemetry data 166 for the wireless terminal 120.
- the telemetry data 166 stored within the memory 164 is typically collected during normal operation of the wireless terminal 120.
- the telemetry data 166 collected may include feature telemetry data, for example, ring tones, or performance telemetry data, for example, signal strength.
- the wireless terminal 120 may also include a voice recognition device 147 that communicates with the controller 170. This voice recognition device
- the voice recognition device 147 may be configured to detect and process voice commands detected by the wireless terminal 120.
- the voice recognition device 147 may designed using conventional design techniques that are well known to those skilled in the art of voice recognition and signal processing.
- a BluetoothTM chip set 146 is also provided within the wireless terminal
- This chip set 146 which communicates with and is controlled by the controller 170, supports bidirectional wireless audio communication links with the headset 100 and handsfree accessory 110, as described herein.
- the headset 100 and handsfree accessory 110 are also equipped with corresponding BluetoothTM technology components.
- conventional technologies other than BluetoothTM technology may be implemented to establish the communication links illustrated by Figure 2. Accordingly, as illustrated and described above with respect to Figures
- wireless communication systems include a wireless terminal 120.
- This terminal 120 is configured to support private and conference calling in a handsfree environment, such as a vehicle environment.
- the wireless terminal 120 may be configured to support bidirectional wireless audio communication with a vehicle-based user headset 100 and a vehicle-based hands free accessory 110, such as a conference accessory.
- the wireless terminal 120 operates as a switching node that is configured to support uninterrupted transfer of an already established first bidirectional wireless audio communication link 130A from the headset 100 to the conference accessory. This transfer operation may be made in response to a first command, such as a voice command received by the voice recognition device 147.
- This first command may also be entered into the wireless terminal 120 using conventional techniques (e.g., input via keypad entry using a menu-based display or a switch contact on the housing 121).
- the wireless terminal 120 is further configured to support uninterrupted return of a wireless audio communication link 130B from the conference accessory to the headset 100. This return operation may be made in response to a second command, which may also be a voice command or other type of command.
- Still further embodiments include a wireless terminal 120 that is configured to support wireless communication with first and second handsfree
- the wireless terminal operates as a switching node that is configured to generate an outgoing first wireless communication link from the wireless terminal to the first accessory and simultaneously generate an alternative format version of the outgoing first wireless communication link from the wireless terminal to the second accessory.
- This alternative format version of the outgoing first wireless communication link may be a format that is compatible with devices that do not generate acoustic signals. For example, devices such as printers, displays, or other devices that support communication with a hearing-impaired member of a conference call may be used as a handsfree accessory. Other configurations are also possible.
- inventions 200 may include activating a wireless terminal within a vehicle, Block
- These methods also include conducting a private conversation with the remote call recipient using a vehicle-based headset that communicates with a wireless terminal using a bidirectional wireless audio communication link, Block 230.
- An operation is then performed to switch from the private conversation to a public conference with the call recipient. This is done by redirecting the bidirectional wireless audio communication link from the headset to a vehicle-based handsfree conference accessory, using the wireless terminal as a switching node, Block 240. This redirecting operation is preferably performed in response to a command and without interruption of the ongoing call with the recipient.
- an operation is performed to return to the private conversation by redirecting the bidirectional wireless audio communication link from the conference accessory to the headset, again without interruption, Block 250. This operation to redirect the communication link is also performed in response to a command.
- the wireless terminal 120 may operate in accordance with programmed call priorities between the various handsfree accessories (see, e.g., 100 and 110).
- the wireless terminal 120 may be configured to support bidirectional wireless audio communication with accessories having different call priorities.
- the controller 170 may include a communication control circuit that is configured to at least periodically monitor the active/inactive states of all the accessories and maintain communication with whatever active accessory has the highest call priority.
- the headset 100 has a higher call priority relative to the handsfree accessory 110. This monitoring of the state of the highest priority accessory may be performed using components of the BluetoothTM chip set 146 that can detect when the headset 100 has been turned "on" and "off'.
- the control circuit is further configured to automatically switch an active bidirectional wireless audio communication link 130A from the headset 100 to the handsfree accessory 110 upon detection that the headset 100 has been turned off.
- the control circuit is also configured to automatically switch the active bidirectional wireless audio communication link 130B from the handsfree accessory 110 to the headset 100 upon detection that the headset 100 has been turned on. In this manner, it is not necessary for the driver of the vehicle to generate a voice command that can be detected over the conversation within the vehicle or manually access the wireless terminal 120 in order to have it switch back and forth from one audio accessory to another audio accessory.
- the communication control circuit may be coupled to programmable storage elements (e.g., memory 164) that are configured to retain the call priorities and enable reordering of the high-to-low call priority hierarchy, if necessary.
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Abstract
Description
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04702016A EP1602224A1 (en) | 2003-03-04 | 2004-01-14 | Wireless communication system for vehicle-based private and conference calling and method therefore |
JP2006506255A JP2006519562A (en) | 2003-03-04 | 2004-01-14 | Wireless communication system and method for in-vehicle private and conference phones |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/378,959 US20040198464A1 (en) | 2003-03-04 | 2003-03-04 | Wireless communication systems for vehicle-based private and conference calling and methods of operating same |
US10/378,959 | 2003-03-04 |
Publications (1)
Publication Number | Publication Date |
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WO2004080043A1 true WO2004080043A1 (en) | 2004-09-16 |
Family
ID=32961258
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2004/000125 WO2004080043A1 (en) | 2003-03-04 | 2004-01-14 | Wireless communication system for vehicle-based private and conference calling and method therefore |
Country Status (5)
Country | Link |
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US (1) | US20040198464A1 (en) |
EP (1) | EP1602224A1 (en) |
JP (1) | JP2006519562A (en) |
CN (1) | CN1757224A (en) |
WO (1) | WO2004080043A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1755320A1 (en) | 2005-08-15 | 2007-02-21 | Bury Sp.z.o.o | Hands-free kit for mobile phone |
WO2009005563A1 (en) * | 2007-06-28 | 2009-01-08 | Apple Inc. | Dynamic routing of audio among multiple audio devices |
WO2014098809A1 (en) * | 2012-12-17 | 2014-06-26 | Qualcomm Incorporated | Contextual power saving in bluetooth audio |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030114147A1 (en) * | 2001-12-13 | 2003-06-19 | Goss Stephen C. | Hold service on wireless calls |
DE10201068A1 (en) * | 2002-01-14 | 2003-07-31 | Siemens Audiologische Technik | Selection of communication connections for hearing aids |
JP2004236117A (en) * | 2003-01-31 | 2004-08-19 | Toshiba Corp | Communication device |
US20070015537A1 (en) * | 2005-07-14 | 2007-01-18 | Scosche Industries, Inc. | Wireless Hands-Free Audio Kit for Vehicle |
US8266535B2 (en) * | 2006-09-11 | 2012-09-11 | Broadnet Teleservices, Llc | Teleforum apparatus and method |
US20080070516A1 (en) * | 2006-09-15 | 2008-03-20 | Plantronics, Inc. | Audio data streaming with auto switching between wireless headset and speakers |
KR101394283B1 (en) * | 2007-09-27 | 2014-05-13 | 삼성전자주식회사 | Portable terminal having bluetooth module and method for bluetooth communication thereof |
JP4571198B2 (en) * | 2008-03-07 | 2010-10-27 | 京セラ株式会社 | Mobile communication terminal |
KR100931810B1 (en) * | 2008-07-18 | 2009-12-14 | 현대자동차주식회사 | Method for switching telematics communication |
JP5245894B2 (en) * | 2009-02-16 | 2013-07-24 | 富士通モバイルコミュニケーションズ株式会社 | Mobile communication device |
US8140116B2 (en) * | 2009-03-06 | 2012-03-20 | Apple Inc. | Duplex audio for mobile communication device and accessory |
JP2012204845A (en) * | 2011-03-23 | 2012-10-22 | Denso Corp | Hands-free communication device |
WO2014075301A1 (en) * | 2012-11-16 | 2014-05-22 | 华为终端有限公司 | Method, mobile terminal, bluetooth device and system for establishing bluetooth connection |
US10119864B2 (en) | 2014-03-11 | 2018-11-06 | Google Technology Holdings LLC | Display viewing detection |
US9924011B2 (en) * | 2014-08-29 | 2018-03-20 | Hyundai Motor Company | Manual bluetooth hands free transfer mode |
US9412379B2 (en) * | 2014-09-16 | 2016-08-09 | Toyota Motor Engineering & Manufacturing North America, Inc. | Method for initiating a wireless communication link using voice recognition |
US9924010B2 (en) | 2015-06-05 | 2018-03-20 | Apple Inc. | Audio data routing between multiple wirelessly connected devices |
US10367540B1 (en) | 2018-02-20 | 2019-07-30 | Cypress Semiconductor Corporation | System and methods for low power consumption by a wireless sensor device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0840465A2 (en) * | 1996-10-31 | 1998-05-06 | Nokia Mobile Phones Ltd. | User interface for mobile telephone |
WO1999045685A1 (en) * | 1998-03-05 | 1999-09-10 | Telefonaktiebolaget Lm Ericsson (Publ) | Audio device selector for wireless communication |
WO2000045570A1 (en) * | 1999-01-27 | 2000-08-03 | Telefonaktiebolaget Lm Ericsson | A portable telecommunication apparatus for multiple audio accessories |
US20020068610A1 (en) * | 2000-12-05 | 2002-06-06 | Anvekar Dinesh Kashinath | Method and apparatus for selecting source device and content delivery via wireless connection |
US20020196134A1 (en) * | 2001-06-26 | 2002-12-26 | Medius, Inc. | Method and apparatus for managing audio devices |
Family Cites Families (64)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US704713A (en) * | 1901-01-17 | 1902-07-15 | Mathias J Klein | Explosive-engine. |
US1603173A (en) * | 1924-12-06 | 1926-10-12 | Miller Improved Gas Engine Com | Internal-combustion engine |
US1972409A (en) * | 1932-04-07 | 1934-09-04 | Max S Petersen | Two-cycle internal combustion engine |
US2056056A (en) * | 1932-10-11 | 1936-09-29 | Stearns Frank Ballou | Engine cylinder |
US2076334A (en) * | 1934-04-16 | 1937-04-06 | Earl A Burns | Diesel engine |
US2169807A (en) * | 1938-03-04 | 1939-08-15 | George R Lyon | Compressor |
US2244323A (en) * | 1938-12-30 | 1941-06-03 | Fairbanks Morse & Co | Internal combustion engine |
US2417910A (en) * | 1942-06-20 | 1947-03-25 | Robert D Bruegger | Internal-combustion engine |
US2374460A (en) * | 1942-08-17 | 1945-04-24 | Allen M Rossman | Internal-combustion engine |
US2398980A (en) * | 1943-04-08 | 1946-04-23 | Schweizerische Lokomotiv | Opposed piston two-cycle engine |
DE863870C (en) * | 1944-06-07 | 1953-01-19 | Sulzer Ag | Opposed piston internal combustion engine with cooled liners inserted in their cylinders |
US2463308A (en) * | 1946-06-03 | 1949-03-01 | Fernando G Prieto | Multiple opposed piston propulsive engine |
US2486185A (en) * | 1946-09-25 | 1949-10-25 | Mallory Res Co | Opposed piston internal-combustion engine |
US2435361A (en) * | 1946-12-26 | 1948-02-03 | Mallory Marion | Multiple piston engine, opposed, separate air and fuel supply |
US2776649A (en) * | 1953-05-13 | 1957-01-08 | Merrell R Fenske | Two cycle fuel injection, opposed piston, thrust plate internal combustion engine |
US3023743A (en) * | 1957-11-12 | 1962-03-06 | Jr George A Schauer | Engine construction |
US3117566A (en) * | 1960-05-27 | 1964-01-14 | Thomas B Danckwortt | Port-controlled, opposed-piston, two-cycle internal-combustion engine |
US3209736A (en) * | 1964-01-14 | 1965-10-05 | Southwest Res Inst | Engine |
US3384057A (en) * | 1966-12-29 | 1968-05-21 | Henry S. Boone | Opposed piston engine |
US3528394A (en) * | 1968-02-08 | 1970-09-15 | Clessie L Cummins | Internal combustion engine |
US3534715A (en) * | 1968-12-31 | 1970-10-20 | Fairbanks Morse Inc | Opposed piston engine having improved cylinder liner cooling |
BE786418A (en) * | 1972-07-18 | 1972-11-16 | Dutry Jean E | INTERNAL COMBUSTION ENGINE. |
US4010611A (en) * | 1974-12-17 | 1977-03-08 | Zachery James E | Compression-expansion power device |
AU497643B2 (en) * | 1975-06-23 | 1978-12-21 | F Kaye | Internal combustion engine |
US4030471A (en) * | 1975-10-29 | 1977-06-21 | Frank Ginkel | Opposed piston engine |
FR2459367A1 (en) * | 1979-06-19 | 1981-01-09 | Barret Paul | ASYMMETRIC INTERNAL COMBUSTION ENGINE |
GB8404159D0 (en) * | 1984-02-17 | 1984-03-21 | Sophocles Papanicolacu J P | Ic engine |
JPS6182541A (en) * | 1984-09-28 | 1986-04-26 | Aisin Seiki Co Ltd | Automobile telephone device |
GB2211581B (en) * | 1987-11-06 | 1991-11-06 | Ind Tech Res Inst | A lubricating device for two-stroke engine |
US4876712A (en) * | 1988-12-09 | 1989-10-24 | Electronics, Inc. | Programmable telephone amplifier circuit interface |
US4972457A (en) * | 1989-01-19 | 1990-11-20 | Spectrum Information Technologies, Inc. | Portable hybrid communication system and methods |
US5058537A (en) * | 1989-04-21 | 1991-10-22 | Paul Marius A | Optimized high pressure internal combustion engines |
US5109402A (en) * | 1989-09-13 | 1992-04-28 | Novatel Communications, Ltd. | Bus for a cellular telephone |
US5042441A (en) * | 1989-10-03 | 1991-08-27 | Paul Marius A | Low emission combustion system for internal combustion engines |
US5054051A (en) * | 1990-01-31 | 1991-10-01 | At&E Corporation | Autodial from database in an electronic wristwatch |
US5213067A (en) * | 1991-12-19 | 1993-05-25 | Kramer Louis E | Internal combustion engine |
JP3508776B2 (en) * | 1993-01-14 | 2004-03-22 | ソニー株式会社 | Transceiver |
US5557653A (en) * | 1993-07-27 | 1996-09-17 | Spectralink Corporation | Headset for hands-free wireless telephone |
US5375573A (en) * | 1993-09-09 | 1994-12-27 | Ford Motor Company | Lubrication of two-stroke internal combustion engines |
FI940049A0 (en) * | 1994-01-05 | 1994-01-05 | Nokia Mobile Phones Ltd | Anordning Foer anpassning av signalnivaon i en mobil telefon |
US5806631A (en) * | 1995-12-29 | 1998-09-15 | Yamaha Hatsudoki Kabushiki Kaisha | Piston pin lubrication |
DE19633167A1 (en) * | 1996-08-17 | 1998-02-19 | Porsche Ag | Spray nozzle for the piston cooling of an internal combustion engine |
US6039011A (en) * | 1997-03-05 | 2000-03-21 | The American University Of Baku | Internal combustion engine with opposed pistons |
JP3661341B2 (en) * | 1997-03-24 | 2005-06-15 | ブラザー工業株式会社 | Communication device |
US5826556A (en) * | 1997-04-24 | 1998-10-27 | Brunswick Corporation | Engine lubrication circuit with alternating lubrication paths |
GB2327555B (en) * | 1997-07-16 | 2002-07-17 | Nokia Mobile Phones Ltd | Radio telephone |
JP3324980B2 (en) * | 1998-02-20 | 2002-09-17 | トヨタ自動車株式会社 | Assembling method of piston ring structure |
US6182619B1 (en) * | 1998-12-24 | 2001-02-06 | General Atomics Aeronautical Systems, Inc. | Two-stroke diesel engine |
US6448906B1 (en) * | 1999-10-27 | 2002-09-10 | Intel Corporation | Wireless detection of electronic devices |
US6257180B1 (en) * | 1999-11-08 | 2001-07-10 | Jeffrey F. Klein | Forced coaxially ventilated two stroke power plant |
US6339706B1 (en) * | 1999-11-12 | 2002-01-15 | Telefonaktiebolaget L M Ericsson (Publ) | Wireless voice-activated remote control device |
US6405027B1 (en) * | 1999-12-08 | 2002-06-11 | Philips Electronics N.A. Corporation | Group call for a wireless mobile communication device using bluetooth |
US6255800B1 (en) * | 2000-01-03 | 2001-07-03 | Texas Instruments Incorporated | Bluetooth enabled mobile device charging cradle and system |
JP4458600B2 (en) * | 2000-01-17 | 2010-04-28 | 本田技研工業株式会社 | Piston oil cooling system for engine |
US6305334B1 (en) * | 2000-01-28 | 2001-10-23 | Leonhard E. Schuko | Internal combustion engine |
US6418885B1 (en) * | 2000-03-17 | 2002-07-16 | Marius A. Paul | Total energy general optimized engine cycle |
US6326926B1 (en) * | 2000-05-18 | 2001-12-04 | Telxon Corporation | Method of operating a wireless and a short-range wireless connection in the same frequency |
DE10045725B4 (en) * | 2000-09-15 | 2005-05-04 | Wacker Construction Equipment Ag | Two-stroke engine with oil lubrication |
US6799062B1 (en) * | 2000-10-19 | 2004-09-28 | Motorola Inc. | Full-duplex hands-free transparency circuit and method therefor |
US6820055B2 (en) * | 2001-04-26 | 2004-11-16 | Speche Communications | Systems and methods for automated audio transcription, translation, and transfer with text display software for manipulating the text |
US6687517B2 (en) * | 2001-05-16 | 2004-02-03 | Nokia Corporation | Hands-free operation of mobile terminal using wireless communication link |
JP2003047066A (en) * | 2001-08-02 | 2003-02-14 | Kenwood Corp | Mobile telephone, hands-free system using the same and car audio capable of making radio communication therewith |
US6690956B2 (en) * | 2001-09-28 | 2004-02-10 | Bellsouth Intellectual Property Corporation | System and method for enabling safe hands-free operation of a wireless telephone in a vehicle |
US6662762B2 (en) * | 2002-02-14 | 2003-12-16 | Leonhard Schuko | Balanced five cycle engine with shortened axial extent |
-
2003
- 2003-03-04 US US10/378,959 patent/US20040198464A1/en not_active Abandoned
-
2004
- 2004-01-14 EP EP04702016A patent/EP1602224A1/en not_active Withdrawn
- 2004-01-14 WO PCT/IB2004/000125 patent/WO2004080043A1/en active Application Filing
- 2004-01-14 JP JP2006506255A patent/JP2006519562A/en active Pending
- 2004-01-14 CN CNA2004800058882A patent/CN1757224A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0840465A2 (en) * | 1996-10-31 | 1998-05-06 | Nokia Mobile Phones Ltd. | User interface for mobile telephone |
WO1999045685A1 (en) * | 1998-03-05 | 1999-09-10 | Telefonaktiebolaget Lm Ericsson (Publ) | Audio device selector for wireless communication |
WO2000045570A1 (en) * | 1999-01-27 | 2000-08-03 | Telefonaktiebolaget Lm Ericsson | A portable telecommunication apparatus for multiple audio accessories |
US20020068610A1 (en) * | 2000-12-05 | 2002-06-06 | Anvekar Dinesh Kashinath | Method and apparatus for selecting source device and content delivery via wireless connection |
US20020196134A1 (en) * | 2001-06-26 | 2002-12-26 | Medius, Inc. | Method and apparatus for managing audio devices |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1755320A1 (en) | 2005-08-15 | 2007-02-21 | Bury Sp.z.o.o | Hands-free kit for mobile phone |
WO2009005563A1 (en) * | 2007-06-28 | 2009-01-08 | Apple Inc. | Dynamic routing of audio among multiple audio devices |
US8068925B2 (en) | 2007-06-28 | 2011-11-29 | Apple Inc. | Dynamic routing of audio among multiple audio devices |
US8958896B2 (en) | 2007-06-28 | 2015-02-17 | Apple Inc. | Dynamic routing of audio among multiple audio devices |
WO2014098809A1 (en) * | 2012-12-17 | 2014-06-26 | Qualcomm Incorporated | Contextual power saving in bluetooth audio |
Also Published As
Publication number | Publication date |
---|---|
JP2006519562A (en) | 2006-08-24 |
CN1757224A (en) | 2006-04-05 |
EP1602224A1 (en) | 2005-12-07 |
US20040198464A1 (en) | 2004-10-07 |
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