USRE38208E1 - System for extending infrared remote control - Google Patents
System for extending infrared remote control Download PDFInfo
- Publication number
- USRE38208E1 USRE38208E1 US09/640,343 US64034300A USRE38208E US RE38208 E1 USRE38208 E1 US RE38208E1 US 64034300 A US64034300 A US 64034300A US RE38208 E USRE38208 E US RE38208E
- Authority
- US
- United States
- Prior art keywords
- signal
- infrared
- electronic device
- audio
- speaker assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- 230000005236 sound signal Effects 0.000 claims description 43
- 238000000034 method Methods 0.000 claims description 23
- 230000003321 amplification Effects 0.000 claims description 15
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 15
- 230000004048 modification Effects 0.000 claims description 8
- 238000012986 modification Methods 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 7
- 239000004606 Fillers/Extenders Substances 0.000 description 7
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Images
Classifications
-
- 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
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/20—Circuits for coupling gramophone pick-up, recorder output, or microphone to receiver
- H04B1/202—Circuits for coupling gramophone pick-up, recorder output, or microphone to receiver by remote control
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C2201/00—Transmission systems of control signals via wireless link
- G08C2201/40—Remote control systems using repeaters, converters, gateways
Definitions
- This invention relates to a system which utilizes an infrared remote control unit to control an electronic device.
- This invention more particularly relates to a system in which the range of the infrared remote control device is extended.
- infrared remote control units are unable to control electronic devices which are disposed around a corner or on a floor different from the location of the remote control.
- VCR video recorder
- satellite dish receiver a satellite dish receiver
- video cable box a sound reproduction system or other electronic device from a location shielded from the electronic device.
- a problem with the latter kind of RF extenders of infrared remote control units is that the remote control itself is encumbered by an add-on device. In the event that the IR-to-RF add-on blocks transmission of the IR signal, then the add-on must be removed from the IR remote control. Then the add-on device is prone to misplacement. Where an IR-to-RF extender is constructed as a separate stand-alone unit, it has the disadvantage of adding additional clutter to an entertainment space.
- An object of the present invention is to provide an improved infrared remote control extender system and/or an associated method for extending the operational range of an infrared remote control unit.
- Another object of the present invention is to provide an infrared remote control extension system which is separate from the remote control and accordingly does not impede the emission of the IR signal to local devices.
- An additional object of the present invention is to provide an infrared remote control extension system which requires but a single IR-to-RF converter, even if multiple infrared remote controls are used in the same space.
- Yet another object of the present invention is to provide an infrared remote control extension system which can avoid the addition of another electronic object to the visible space in a room.
- An assembly or system for effecting control of an electronic device having an infrared sensor for receiving an infrared control signal from a manually actuated remote control comprises, in accordance with the present invention, a speaker assembly which contains an electro-acoustic transducer (speaker) and an infrared sensor.
- the speaker is operatively linked to an audio reproduction system, while the sensor receives and converts the infrared control signal from the remote control to an electrical signal.
- a signal generator preferably mounted to the speaker assembly, is operatively connected to the IR sensor for generating an RF carrier signal modulated by control information encoded in the infrared control signal and the electrical signal.
- a transmission link is provided for transmitting the modulated RF carrier signal from the speaker assembly to the electronic device.
- a signal receiver disposed adjacent to the infrared sensor of the electronic device receives the modulated RF carrier signal and converts the modulated RF carrier signal to a secondary infrared signal essentially identical to the infrared control signal.
- the transmission link includes a wire or cable extending from the speaker assembly to an amplification unit of the audio reproduction system.
- the signal generator is electrically connected to the wire or cable so that the modulated RF carrier signal is transmitted in one direction over the wire or cable, while an electrical audio signal is transmitted in an opposite direction over the wire or cable, from the amplification unit to the speaker housing.
- the transmission link further includes a first connector for conducting the modulated RF carrier signal from the wire or cable to a socket at a first location of a wiring network internal to a building.
- the wiring network may be a twisted-pair telephone network, electrical power transmission lines or coaxial cables.
- the modulated RF carrier signal is conducted over the wiring network from the first location to a second location where a second connector of the transmission link is provided for conducting the modulated RF carrier signal from the wiring network to the signal receiver.
- the transmission link may additionally include a low-pass filter for blocking the modulated RF carrier signal from entering the amplification unit and a high-pass filter for blocking an audio signal from the amplification unit from being transmitted over the wiring network via the first connector.
- a dedicated electrical line may extend from the speaker wire or cable to the signal receiver.
- the modulated RF carrier signal is transmitted over the wire or cable and the electrical line to the signal receiver.
- the transmission link includes an antenna operatively connected to the signal generator and possibly mounted to the speaker assembly for wirelessly transmitting the modulated RF carrier signal from the signal generator to the signal receiver.
- the speaker housing contains a wireless audio signal receiver operatively connected to the speaker
- a component may be provided for modifying a characteristic (e.g., amplitude) of an audio signal applied to the speaker, the IR sensor being operatively connected to the modification component for changing the characteristic in accordance with instructions encoded in the infrared control is signal.
- the present invention is also directed to a method for effecting control of an electronic device having an infrared sensor for receiving an infrared control signal from a manually actuated remote control.
- the method comprises (I) operating the remote control to produce the infrared signal, (ii) receiving the infrared signal at an audio speaker assembly of an audio reproduction system, (iii) generating an RF carrier frequency at the speaker assembly, (iv) modulating the RF carrier frequency, also at the speaker assembly, with instructions encoded in the received infrared control signal, (v) transmitting the modulated RF carrier frequency from the speaker assembly to the electronic device, (vi) receiving the modulated RF carrier frequency at the electronic device, (vii) generating, at the electronic device in response to the received modulated RF carrier frequency, a secondary infrared signal substantially similar to the infrared control signal, and (viii) emitting the secondary infrared signal toward the infrared sensor of the electronic device.
- the transmitting of the modulated RF carrier frequency includes transmitting the modulated RF carrier frequency over a speaker wire or cable extending from the speaker assembly to an amplification unit of the audio reproduction system.
- the speaker wire or cable simultaneously carries, in opposite directions, the remote control instructions in the modulated RF carrier wave and an electrical audio signal.
- the transmission path of the modulated RF carrier frequency includes a wiring (telephone, power, cable) network internal to building structure.
- the modulated RF carrier frequency is conducted from the wire or cable to a socket of the wiring network, at a first location internal to the building structure, transmitted over the wiring network and conducted from the wiring network at a second location to the signal receiver.
- the method may include selectively filtering the modulated RF carrier frequency so that it does not enter the amplification unit. Also, the audio signal from the amplification unit may be blocked by filtering from being transmitted over the wiring network via the first connector by filtering.
- the transmitting of the modulated RF carrier frequency includes wirelessly emitting the modulated RF carrier frequency from an antenna operatively connected to the signal generator and mounted to a speaker assembly structure (e.g., a baffle).
- the method may further comprise receiving a wireless audio signal in the speaker housing, converting the wireless audio signal to an electrical signal, applying the electrical audio signal to the speaker to generate an acoustic pressure wave, and modifying, in accordance with instructions encoded in the infrared control signal a characteristic (e.g., amplitude) of the electrical audio signal applied to the speaker.
- An infrared remote control extender system in accordance with the present invention is intended to be separate or spaced from the remote control and accordingly does not impede the emission of the IR signal to local devices. Moreover, an infrared remote control extension system in accordance with the present invention requires only one IR-to-RF converter which accommodates multiple infrared remote controls in the same space.
- the infrared sensor and RF generator are placed within a speaker, a normal and unavoidable component of an entertainment system.
- the invention avoids the addition of another electronic object to the visible space in a room.
- FIG. 1 is a block diagram of a system incorporating an infrared extender assembly in accordance with the present invention.
- FIG. 2 is a block diagram of another system incorporating an infrared extender assembly in accordance with the present invention.
- an audio speaker 8 of a home audio reproduction system includes a speaker housing 10 which contains an electro-acoustic transducer 12 and an infrared sensor 14 .
- Sensor 14 generates an electrical signal in response to an infrared signal 16 emitted by a manually actuated infrared remote control unit 18 .
- Infrared signal 16 is designed to control the operation of an electronic device 20 such as a satellite dish control box, a cable control box, a VCR, a video camera, etc.
- electronic device 20 may include some mechanical components, for example, where the electronic device is a CD player or changer.
- IR signal 16 cannot be used directly to control electronic device 20 because there is no line-of-sight path between remote control unit 18 and an IR sensor 22 on electronic device 20 .
- Electronic device 20 is, for example, located in a different room from remote control unit 18 .
- the electrical signal produced by sensor 14 encodes instructions which are contained in the infrared signal 16 from remote control 18 .
- the electrical signal is applied to a modulator 24 which uses the electrical signal to modulate a radio-frequency (RF) carrier signal from an RF generator 26 .
- the modulated RF electrical carrier signal produced by generator 26 and modulator 24 is applied to an antenna 28 mounted to speaker housing 10 .
- a wireless modulated RF carrier signal 30 having the same frequency and carrying the same information as the modulated RF electrical carrier signal from generator 26 and modulator 24 is transmitted through obstructions such as walls and floors (not shown) to a remote antenna 32 generally located in the same building as speaker housing 10 and remote control unit 18 .
- Antenna 32 is mounted to a casing 34 of a converter device 36 which also includes a filter 38 , a demodulator 40 and an LED emitter 42 .
- the wireless modulated RF carrier signal 30 is processed by filter 38 and demodulator 40 so that a wireless infrared signal 44 emitted by LED 42 is essentially identical to infrared control signal 16 emitted by infrared remote control unit 18 .
- Converter device 36 is disposed proximately to sensor 22 which receives the reproduced infrared control signal 44 and thereby effectuates control of electronic device 20 .
- Speaker 8 may be connected by a wire or cable (not shown) to an audio signal generator 46 .
- speaker 8 may be operated wirelessly.
- audio generator 46 produces a wireless RF signal 48 which is received by an antenna 50 in or on speaker housing 10 .
- the received signal is processed by a filter 52 , a demodulator 54 and an amplifier 56 and applied to electro-acoustic transducer 12 .
- One or more parameters or characteristics of the signal applied to transducer 12 may be modified at speaker 8 , e.g., in amplifier 56 , in response to an instruction encoded in infrared control signal 16 .
- IR sensor 14 is connected to a decoder 58 which is connected in turn to amplifier 56 .
- the amplitude of the electrical audio signal from amplifier 56 may be adjusted, for example, to affect stereophonic balance.
- Amplifier 56 may also be controlled to modify equalization parameters in response to an instruction in remote control signal 16 .
- FIG. 2 illustrates another system with an assembly for extending the range of an IR remote control unit 60 .
- IR remote control 60 produces a wireless infrared signal 62 which is adapted for controlling the operation of an electronic device 64 , as discussed above.
- a housing 66 of a speaker 68 contains an IR sensor 70 which detects IR signal 62 and converts it to an electrical signal having the same information content as the IR signal.
- a modulator 72 modulates an RF electrical carrier frequency from a generator or source 74 in response to the electrical signal from sensor 70 so that the modulated electrical carrier frequency has the same information content as IR remote control signal 62 .
- the modulated RF carrier frequency is transmitted from modulator 72 to a coupler circuit 76 via a high-pass filter 78 .
- Coupler circuit 76 is connected to a speaker wire or cable 80 which extends toward an audio signal generating system 82 particularly includingvia a signal separating and connecting device 92 .
- the audio signal generating system 82 includes an amplifier 84 and one or more audio signal sources including a radio receiver 86 , a compact disk (CD) player 88 , and a magnetic-tape player 90 .
- a The signal separating and connecting device 92 is disposed at the audio signal generating system 82 for separating control signals from audio signals.
- Device 92 includes a coupler circuit 94 , a low-pass filter 96 and a high-pass filter 98 .
- Coupler circuit 94 is connected connected, on one side side, to speaker wire or cable 80 80 , and and, on another side side, to amplifier 82 84 via low-pass filter 96 .
- Low-pass filter 96 isolates and protects audio signal generating system 82 82 , and particularly amplifier 84 84 , from RF control signals which are transmitted over wire or cable 80 from modulator 72 .
- Audio signals from amplifier 84 are transmitted to an electro-acoustic transducer 100 of speaker 68 over a path including low-pass filter 96 , coupler circuit circuits, 94 , 76 , wire or cable 80 , another low-pass filter 102 and, optionally, an amplifier 104 .
- the audio frequency signal applied to transducer 100 by amplifier 104 may have parameters or characteristics modified in accordance with instructions in IR signal 62 , as discussed hereinabove with reference to FIG. 1 .
- the modulated RF electrical carrier signal produced by modulator 72 in response to the RF carrier from generator 74 and the electrical remote control signal from sensor 70 is selectively transmitted via high-pass filter 98 and a dedicated electrical fine 105 to a module 106 disposed at an IR sensor 108 of audio signal generating system 82 .
- Module 106 includes a demodulator 110 which extracts the control information from the modulated RF electrical carrier signal.
- Module 106 further includes an LED emitter 112 which essentially reproduces control signal 62 and applies the signal to sensor 108 for controlling selected operations of audio signal generating system 82 .
- audio signal generating system 82 includes a decoder 114 operatively connected to sensor 108 for determining which function of audio signal generating system 82 is to be controlled.
- the modulated RF electrical carrier signal produced by modulator 72 in response to the RF carrier from generator 74 and the electrical remote control signal from sensor 70 is selectively transmitted via high-pass filter 98 , a coupling circuit 116 , and a conventional telephone jack or socket 117 to a twisted-pair telephone wiring network 118 .
- the modulated RF electrical carrier signal for remotely controlling electronic device 64 is carried by twisted-pair telephone wiring network 118 simultaneously with ordinary telephone signals generated by conventional telephone devices 120 and 122 .
- Telephone devices 120 and 122 are connected to network 118 via respective low-pass filters 124 and 126 and coupler circuits 116 and 128 .
- the internal telephone wiring network 118 may also be used to carry video and audio signals as disclosed in U.S. Pat. No. 5,010,399, the disclosure of which is hereby incorporated by reference.
- the modulated RF electrical carrier signal produced by modulator 72 and carried over twisted-pair telephone wiring network 118 is transmitted therefrom via a telephone jack or socket 128 127 and coupler circuit 128 to a high-pass-filter high- pass filter 130 .
- Filter 130 is connected to a module 132 disposed at an IR sensor 134 of electronic device 64 .
- a demodulator component 136 of module 132 extracts the control information from the modulated RF electrical carrier signal.
- An LED emitter 138 of module 132 essentially reproduces control signal 62 and applies the signal to sensor 134 for controlling selected operations of electronic device 64 .
- Coupler 128 , low-pass filter 126 and high-pass filter 130 may be incorporated into a single casing. Coupler 128 and high-pass filter 130 are part of a transmission link operatively connecting coupler 76 to electronic device 64 for conducting the modulated RF carrier signal from speaker 68 to the electronic device 64 . Low-pass filter 96 is included in the transmission link for blocking the modulated RF carrier signal from entering amplifier 84 , while high-pass filter 98 blocks an audio output signal from amplifier 84 from being transmitted over telephone network 118 via separating and connecting device 92 .
- the RF signal carrying the remote control instructions may be relayed from the amplifier end of a speaker wire to another location within a residence by pre-existing internal wiring other than twisted-par telephone wiring.
- pre-existing wiring includes coaxial cable and power lines (see U.S. Pat. No. 4,509,211 to Robbins, incorporated by reference).
- FIGS. 1 and 2 depict speaker assemblies 8 and 68 as having housings 10 and 66 .
- Housings 10 and 66 may be dedicated speaker casings or may be larger structures having additional functions, such as fixtures or furniture.
- housings 10 and 66 may be parts of a building, as where transducers 12 and 100 are mounted inside a wall.
- sensors 14 and 70 are located at the speaker assemblies 8 and 68 and are attached, indirectly, to speakers or transducers 12 and 100 .
- Sensors 14 and 70 are generally mounted to a grill (not shown) or a baffle (not shown) to which transducers 12 and 100 are attached.
- sensors 14 and 17 may be attached directly to other structural components of speaker assemblies 8 and 68 , such as housings 10 and 66 , supports inside a building wall (not shown), etc.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Selective Calling Equipment (AREA)
- Optical Communication System (AREA)
Abstract
Description
Claims (33)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/640,343 USRE38208E1 (en) | 1996-12-18 | 2000-08-16 | System for extending infrared remote control |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/768,673 US5815108A (en) | 1996-12-18 | 1996-12-18 | System for extending infrared remote control |
US09/640,343 USRE38208E1 (en) | 1996-12-18 | 2000-08-16 | System for extending infrared remote control |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/768,673 Reissue US5815108A (en) | 1996-12-18 | 1996-12-18 | System for extending infrared remote control |
Publications (1)
Publication Number | Publication Date |
---|---|
USRE38208E1 true USRE38208E1 (en) | 2003-08-05 |
Family
ID=25083167
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/768,673 Ceased US5815108A (en) | 1996-12-18 | 1996-12-18 | System for extending infrared remote control |
US09/640,343 Expired - Lifetime USRE38208E1 (en) | 1996-12-18 | 2000-08-16 | System for extending infrared remote control |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/768,673 Ceased US5815108A (en) | 1996-12-18 | 1996-12-18 | System for extending infrared remote control |
Country Status (3)
Country | Link |
---|---|
US (2) | US5815108A (en) |
EP (1) | EP1016054A4 (en) |
WO (1) | WO1998027523A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060150221A1 (en) * | 2005-01-06 | 2006-07-06 | Idt Sonicvision Limited | Wireless output system for audio/video equipment |
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US20030035556A1 (en) * | 1997-11-18 | 2003-02-20 | Jerry Curtis | Audio distribution system |
US6400968B1 (en) * | 1998-05-04 | 2002-06-04 | Conexant Systems, Inc. | System and method for extending the range of a base unit |
US6111677A (en) * | 1998-08-31 | 2000-08-29 | Sony Corporation | Optical remote control interface system and method |
JP2000324572A (en) | 1999-05-14 | 2000-11-24 | Matsushita Electric Ind Co Ltd | Remote control system |
US6615021B1 (en) | 1999-11-02 | 2003-09-02 | Andrew Corporation | Method and apparatus for transmitting radio frequency signals to and from a pager |
US7013283B1 (en) * | 1999-11-17 | 2006-03-14 | Sarnoff Corporation | System and method for providing programming content in response to an audio signal |
DE19957536C2 (en) * | 1999-11-30 | 2003-04-03 | Siemens Ag | Anti-theft system for a motor vehicle and method for operating an anti-theft system |
JP4727892B2 (en) * | 2000-03-09 | 2011-07-20 | シーメンス アクチエンゲゼルシヤフト | For example, a transmission / reception method for detecting an ID generator |
US20020191252A1 (en) * | 2001-05-10 | 2002-12-19 | Pugel Michel Anthony | Economical extension of the operating distance of an RF remote link accommodating IR remote controls having differing IR carrier frequencies |
US6895252B2 (en) | 2001-05-10 | 2005-05-17 | Thomson Licensing Sa | Economical extension of the operating distance of an RF remote link accommodating information signals having differing carrier frequencies |
CN100354902C (en) * | 2001-10-05 | 2007-12-12 | 皇家飞利浦电子股份有限公司 | Method of operating a remote control system and a remote control system comprising an RF transmission and receiving system |
DE10151034B4 (en) * | 2001-10-16 | 2004-02-05 | Siemens Ag | Anti-theft system, method for operating an anti-theft system and components of an anti-theft system |
US6972661B2 (en) * | 2003-03-28 | 2005-12-06 | Trans Electric Co., Ltd. | Anti-interference relay device for signal transmission |
US7091822B2 (en) * | 2003-06-02 | 2006-08-15 | Omega Patents, L.L.C. | Vehicle remote start control system including a transponder code bypass transmitter and associated methods |
GB2410638A (en) * | 2004-01-28 | 2005-08-03 | British Sky Broadcasting Ltd | Automatic formatting of signals sent to a plurality of outputs by a media device |
FR2869137B1 (en) * | 2004-04-19 | 2006-06-30 | Cabasse Sa | DEVICE FOR CONTROLLING AN ACOUSTIC SPEAKER SYSTEM USED WITH A TELEVISION SCREEN, ACOUSTIC SPEAKER, AND CORRESPONDING AMPLIFIER |
EP1772029A4 (en) * | 2004-07-15 | 2010-02-24 | Richard Sharpe | Local 2-way paging systems and associated methods |
US20090091425A1 (en) * | 2005-07-15 | 2009-04-09 | Richard Sharpe | Pager Solutions For Wireless Device System And Associated Methods |
WO2012044972A1 (en) | 2010-09-30 | 2012-04-05 | Transmitive, LLC | Versatile remote control device, sytem and method |
JP5459262B2 (en) * | 2011-05-20 | 2014-04-02 | ヤマハ株式会社 | Speaker device |
CN103188536A (en) * | 2011-12-29 | 2013-07-03 | 青岛海尔软件有限公司 | Intelligent television remote control device based on module card |
CN111225258A (en) * | 2020-01-09 | 2020-06-02 | 京东方科技集团股份有限公司 | Display apparatus and control method thereof |
Citations (10)
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US3590382A (en) | 1967-12-20 | 1971-06-29 | Frank M Kenney | Wireless stereo sound speaker system and modulator-oscillator circuit |
US4509211A (en) | 1983-05-16 | 1985-04-02 | Xantech Corporation | Infrared extension system |
US4709412A (en) | 1986-08-26 | 1987-11-24 | Xantech Corporation | Remote control unit integrator console |
US4809359A (en) | 1986-12-24 | 1989-02-28 | Dockery Devan T | System for extending the effective operational range of an infrared remote control system |
US4847903A (en) | 1987-05-22 | 1989-07-11 | Recoton Corporation | Wireless remote speaker system |
US5010399A (en) | 1989-07-14 | 1991-04-23 | Inline Connection Corporation | Video transmission and control system utilizing internal telephone lines |
US5142397A (en) | 1990-01-04 | 1992-08-25 | Dockery Devan T | System for extending the effective operational range of an infrared remote control system |
US5272525A (en) | 1991-03-07 | 1993-12-21 | Recoton Corporation | System for local wireless transmission of signals at frequencies above 900 MHz |
US5299264A (en) | 1991-08-21 | 1994-03-29 | L. S. Research, Inc. | System for short-range transmission of signals over the air using a high frequency carrier |
US5410735A (en) | 1992-01-17 | 1995-04-25 | Borchardt; Robert L. | Wireless signal transmission systems, methods and apparatus |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4980665A (en) * | 1987-05-22 | 1990-12-25 | Recoton Corporation | Remote control repeater |
-
1996
- 1996-12-18 US US08/768,673 patent/US5815108A/en not_active Ceased
-
1997
- 1997-12-17 WO PCT/US1997/023662 patent/WO1998027523A1/en not_active Application Discontinuation
- 1997-12-17 EP EP97952577A patent/EP1016054A4/en not_active Withdrawn
-
2000
- 2000-08-16 US US09/640,343 patent/USRE38208E1/en not_active Expired - Lifetime
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3590382A (en) | 1967-12-20 | 1971-06-29 | Frank M Kenney | Wireless stereo sound speaker system and modulator-oscillator circuit |
US4509211A (en) | 1983-05-16 | 1985-04-02 | Xantech Corporation | Infrared extension system |
US4709412A (en) | 1986-08-26 | 1987-11-24 | Xantech Corporation | Remote control unit integrator console |
US4809359A (en) | 1986-12-24 | 1989-02-28 | Dockery Devan T | System for extending the effective operational range of an infrared remote control system |
US4847903A (en) | 1987-05-22 | 1989-07-11 | Recoton Corporation | Wireless remote speaker system |
US5010399A (en) | 1989-07-14 | 1991-04-23 | Inline Connection Corporation | Video transmission and control system utilizing internal telephone lines |
US5142397A (en) | 1990-01-04 | 1992-08-25 | Dockery Devan T | System for extending the effective operational range of an infrared remote control system |
US5272525A (en) | 1991-03-07 | 1993-12-21 | Recoton Corporation | System for local wireless transmission of signals at frequencies above 900 MHz |
US5299264A (en) | 1991-08-21 | 1994-03-29 | L. S. Research, Inc. | System for short-range transmission of signals over the air using a high frequency carrier |
US5410735A (en) | 1992-01-17 | 1995-04-25 | Borchardt; Robert L. | Wireless signal transmission systems, methods and apparatus |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060150221A1 (en) * | 2005-01-06 | 2006-07-06 | Idt Sonicvision Limited | Wireless output system for audio/video equipment |
Also Published As
Publication number | Publication date |
---|---|
WO1998027523A1 (en) | 1998-06-25 |
EP1016054A1 (en) | 2000-07-05 |
EP1016054A4 (en) | 2001-09-12 |
US5815108A (en) | 1998-09-29 |
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