US20140225756A1 - Wireless control system and method - Google Patents
Wireless control system and method Download PDFInfo
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- US20140225756A1 US20140225756A1 US14/252,634 US201414252634A US2014225756A1 US 20140225756 A1 US20140225756 A1 US 20140225756A1 US 201414252634 A US201414252634 A US 201414252634A US 2014225756 A1 US2014225756 A1 US 2014225756A1
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
- G06F3/023—Arrangements for converting discrete items of information into a coded form, e.g. arrangements for interpreting keyboard generated codes as alphanumeric codes, operand codes or instruction codes
- G06F3/0231—Cordless keyboards
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
- G06F3/0202—Constructional details or processes of manufacture of the input device
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/038—Indexing scheme relating to G06F3/038
- G06F2203/0384—Wireless input, i.e. hardware and software details of wireless interface arrangements for pointing devices
Abstract
A wireless control system and method is disclosed. The system includes a controlled device having a wireless communication system, the wireless communication system including a source of an interrogating field and a reader. The wireless control system also includes a control device having one or more manual inputs and a modulator for modulating the interrogating field with a coded signal. The modulated interrogating field is detected by the reader in the controlled device and the controlled device wireless operation with the control device is enabled based on the coded signal received from the control device if the control device is within a predetermined distance as determined by the received modulated interrogating field.
Description
- The present application is a continuation of U.S. patent application Ser. No. 12/430,822 filed Apr. 27, 2009, U.S. Pat. No. 8,698,656 which is a divisional application of U.S. patent application Ser. No. 11/363,388 filed Feb. 27, 2006, U.S. Pat. No. 7,525,453, which is a continuation-in-part application of U.S. patent application Ser. No. 09/978,615 filed Oct. 16, 2001, U.S. Pat. No. 7,006,014, which claims the benefit pursuant to 35 USC §119(e) of the priority date of U.S. Provisional Patent Application Ser. No. 60/241,178, filed on Oct. 17, 2000, U.S. Provisional Patent Application Serial No. 60/244,611, filed on Nov. 1, 2000 and U.S. Provisional Patent Application Ser. No. 60/257,479, filed on Dec. 21, 2000, the disclosures of which are hereby expressly incorporated herein by reference. U.S. patent application Ser. No. 12/430,822 filed Apr. 27, 2009, U.S. Pat. No. 8,698,656 is also a continuation-in-part application of U.S. patent application Ser. No. 10/003,778 filed Oct. 31, 2001, U.S. Pat. Nos. 7,027,039 and 10/027,369 filed Dec. 20, 2001 the entire disclosures of which are hereby expressly incorporated herein by reference.
- 1. Field of the Invention
- The present invention relates to wireless controllers.
- 2. Description of the Prior Art and Related Information
- Wireless keyboards have a number of advantages over the more common wire connected keyboards employed in computer systems. First of all, wireless keyboards offer more flexibility to the user to position him or her self relative to the computer. This can reduce strain and tiredness associated with computer use. Also, wireless keyboards reduce the amount of wires connected over or around a desktop and reduce clutter and complicated wiring tangles. This also creates a cleaner look to the overall system and can give the computer system a more sophisticated and/or expensive look. This avoidance of wiring becomes increasingly significant as more add on peripherals are included in typical computer systems which can result in workplace clutter.
- The wireless keyboards currently available are either infrared based or RF based transmission systems. The infrared systems are the simplest and least expensive, however, they require a line of sight to the receiver. This can result in inconsistent transmission as the keyboard is moved or if other objects block the transmission path. RF systems do not suffer from this problem but are more expensive than infrared systems. In particular, the reliability of transmission in RF systems at a given range depends on the RF frequency and the power and quality of the transmitter. Therefore, maintaining transmission reliability requires more expensive higher frequency transmitters and/or higher power transmitters. Nonetheless, RF systems are increasingly being used for wireless keyboards over infrared systems due to their performance advantages.
- Undoubtedly the primary reason that wireless keyboards have not displaced wire connected keyboards to a greater extent is the need for replacing batteries. When batteries fail in a wireless keyboard computer system the system is useless until the batteries are replaced. This is obviously a significant inconvenience when the battery failure is not expected. Also, keyboards typically continuously scan the matrix of keys to detect key depression. Therefore, even when there is no data entry from the keyboard battery power is being used for key scanning. Therefore, battery lifetime is inherently limited in wireless keyboards.
- As a result of these limitations wireless keyboards have not been able to fulfill the potential of replacing wired keyboards in computer systems.
- In one aspect the present invention provides a wireless control system. In another aspect a wireless control method is disclosed. The system includes a controlled device having a wireless communication system, the wireless communication system including a source of an interrogating field and a reader. The wireless control system also includes a control device having one or more manual inputs and a modulator for modulating the interrogating field with a coded signal. The modulated interrogating field is detected by the reader in the controlled device and the controlled device wireless operation with the control device is enabled based on the coded signal received from the control device if the control device is within a predetermined distance as determined by the received modulated interrogating field.
- Further features and aspects of the invention are also provided as will be appreciated from the following detailed description of the invention.
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FIGS. 1A and 1B are a drawings of a computer system with a passive wireless keyboard in accordance with two embodiments of the present invention. -
FIG. 2 is a cutaway view of the wireless keyboard ofFIG. 1A or 1B illustrating the transponder ID tags and antenna employed in the keyboard. -
FIG. 3 is a schematic drawing of a circuit of the wireless mouse employed in one embodiment of the computer system ofFIG. 1B . -
FIG. 4 is a block diagram of the tag reader electronics employed in the computer system ofFIG. 1A or 1B. -
FIG. 5 is a block diagram of the tag reader in an alternate embodiment. -
FIGS. 6A and 6B are top and sectional views of a multi-layer keyboard employing a planar antenna design. -
FIG. 7 is a timing diagram illustrating the use of unique time slots for simultaneously activated keys. - Referring to
FIGS. 1A and 1B , a computer system incorporating a passivewireless keyboard 10 and awireless mouse 12 is illustrated. Keyboard 10 may be a QWERTY keyboard of an integral one piece conventional construction or may incorporate a folding design such as disclosed in U.S. Pat. No. 6,094,156 the disclosure of which is incorporated herein by reference in its entirety. The computer system as illustrated also includes ahousing 14 which includes the processor, hard disk drive, and other components in a conventional computer system, as well as a reader unit which is the source of an interrogatingfield 16 which is used to interrogate thepassive keyboard 10 and receive wireless transmission fromwireless mouse 12. The wireless mouse may employ passive or active wireless transmission as described below. The computer system also includes amonitor 18 which may be a CRT or LCD type of display or other display known in the computer art. Interrogatingfield 16 is an RF modulated field generated by the reader and applied to a suitable antenna, contained withinhousing 14. Optionally the reader and/or the antenna may be contained withinmonitor 18. Alternatively, the reader may be incorporated in an add-on unit which interfaces with thecomputer housing 14 through an available port, such as a USB port, or the keyboard input. - Each key in
keyboard 10 couples a passive transponder to the interrogatingfield 16 when a key is activated and provides a coded response to the reader which indicates the key activated. For example, the activation of a key in thekeyboard 10 may close a switch that connects the transponder corresponding to that key to its antenna thereby allowing it to couple to the interrogatingfield 16 and provide a coded response to the reader in thecomputer housing 14 or may couple/decouple the antenna by tuning/detuning the circuit. Each transponder corresponding to a given key in thekeyboard 10 has a unique code identifying the key which is read by the reader and thus provides an identification of the specific key activation to the computer processor. - A variety of passive transponder tags (or RFID tags) are known, however, most of these are limited in range. Such passive tags are primarily used in security systems and inventory tracking. Such tags typically include an antenna and integrated circuit which are combined in a small package and provided at a relatively low-cost. The antenna is used by the passive transponder to receive energy from the interrogating field which energy is used by the transponder to provide the coded response to the interrogating signal. The need for the passive transponder to receive energy from the interrogating field is a primary range limitation, often limiting the read range to a few cm where a small size inductive antenna is used in the reader to supply power. Longer range systems often employ very large reader antennas, for example, in passive RFID tag based security access systems or theft detection systems reader antennas are typically dimensioned on the order of size of a doorway or access portal. It is desirable to increase the range of the wireless keyboard without employing such large reader antennas. Several approaches to range increases are described in the above noted U.S. patent application Ser. No. 09/978,615 ('615 application) which take advantage of the different aspects of the present application. SAW (Surface Acoustic Wave) passive transponder tags have advantageous features for combination with the present invention. SAW tags and readers employ backscatter transmission coded in the time domain using a reflected series of pulses which are delayed to avoid noise due to reflections from the environment. SAW tags do not need power from the interrogating field so they can have increased read range. SAW tags as well as readers suitable for reading the response from such tags are well known and commercially available. For example, such tags and readers are available from RF SAW, Inc. Also, the following patents disclose SAW RFID tags and readers; U.S. Pat. No. 6,966,493, U.S. Pat. No. 6,958,696, U.S. Pat. No. 6,919,802, U.S. Pat. No. 6,759,789, U.S. Pat. Nos. 6,756,880, 6,708,881, the disclosures of which are incorporated herein by reference in their entirety. Also, the RFID Handbook, second edition, 2003, Wiley Pub., by Klaus Finkenzeller discloses details of SAW RFID tags and readers, the disclosure of which is incorporated herein by reference (the relevant portions thereof will be readily appreciated by those skilled in the art). A time delayed backscatter modulator may also be implemented on the keyboard using discrete components including a delay line coupled to the antenna. Other backscatter tags and reader systems may also be employed. Various backscatter modulator circuit designs and approaches are known; for example, as set out in the above noted RFID Handbook. In addition to these and other known teachings the teachings of U.S. Pat. No. 6,243,012 may be employed, the disclosure of which is incorporated herein by reference. Also, non backscatter systems may be employed and several are described in the '615 application. Selection of the system will involve the desired range and cost of the application.
- Referring to
FIG. 2 a portion ofkeyboard 10 is illustrated showing a portion of an array of passive transponder ID tags 20. Such tags may comprise SAW tags and specifics of the design oftags 20 may be found in the above noted United States patents. EachID tag 20 comprises a chip storing a unique code for the specific key of thekeyboard 10 to which thetag 20 corresponds. Also as shown eachtag 20 is coupled via aswitch 22 to anantenna 24. When a key is activated by the keyboard user the depression of the key closes switch 22 thereby coupling theindividual ID tag 20 to theantenna 24. This allows the tag to couple to the interrogating field and reflect the field with a modulated response to provide its unique code to the reader. Eachtag 20 may have its own antenna. As antenna size can limit read range, however, it is generally desirable to have as large an antenna reflective signature as possible associated with each tag. This may be achieved by providing a common antenna to which is coupled a plurality ofindividual tags 20. This allows anantenna 24 to be dimensioned larger than in typical passive RFID applications up to substantially the entire size of the keyboard which can provide substantial increases in coupling to the interrogating field and corresponding increases in the read distance and read speed and integrity. Although theantenna 24 is illustrated as asimple dipole antenna 24 it will be appreciated that other antenna types are possible, including a multi-wire folded dipole. Also, theantenna 24 may be formed on a separate layer of the keyboard from thetags 20 with aconnection 26 provided between the antenna layer and the layer on which thetags 20 are formed allowing the use of apatch antenna 24 or an antenna comprising an array of patches or microstrip lines. Whether theantenna 24 is on the same substrate as thetags 20 or a separate substrate the antennas may advantageously be formed using printed circuit board techniques to ease assembly and reduce costs. - Still referring to
FIG. 2 , in one embodiment oftag antenna 24separate antennas 24 may be provided for different groups of keys. The number of separate antennas provided may be chosen to reduce or eliminate the possibility of simultaneously activated keys sharing an antenna during normal keyboard usage. This may reduce interference in the read operation between such simultaneously activated keys. For example, for a typical computer keyboard with CTRL, ALT and SHIFT keys adapted for use together with other keys, these may each be coupled to aseparate antenna 24. Aseparate antenna 24 could then couple to the remaining keys, including all the text keys. Additional or fewer antennas may be provided for specific keyboard functionality. Alternatively, the antenna/key grouping may be chosen for optimal coupling and/or optimal layout of a printed circuit with the antennas and tag connections on the keyboard. For example, the keys may be coupled in columns to antennas arranged in rows along the top (as schematically illustrated) and bottom of the keyboard. Preferably, as noted above, the antennas in total exploit a substantial portion of the keyboard area to maximize read range - Referring to
FIG. 3 , an implementation of awireless mouse 12 circuit is illustrated. Ifmouse 12 employs mechanical position encoders the use of passive transmission of the position information may be employed as described in more detail in U.S. patent application Ser. No. 10/003,778. If an optical position encoder is desired an active backscatter transmission may be employed as shown inFIG. 3 . A conventionaloptical tracking circuit 28 may be employed which is coupled to an active backscattertransmitter comprising modulator 30 andantenna 32. The active backscatter modulator may employ the same general design as passive backscatter modulators described above, e.g. the '012 patent or RFID Handbook, with the power provided from the battery and the modulation input coming from the position input rather than stored in an IC. The optical tracking circuit and modulator are powered bybattery 34, however, the transmitter does not need to power the transmission through the antenna since backscatter/reflective transmission of the interrogating field is employed. This embodiment has the advantage of reduced power consumption over conventional wireless optical mouse systems which power RF transmission with a battery. Such systems are known to have relatively short battery lifetime and accordingly the extended battery lifetime with the present embodiment is a desirable improvement. Also, a shared reader may be employed with the wireless keyboard. - Referring to
FIG. 4 a reader block diagram is illustrated. As noted above reader designs are known and are described in the above patents and in the above noted RFID Handbook, by Klaus Finkenzeller (chapter 11), and need not be described in detail herein; however,FIG. 4 illustrates aspects of the reader adapted for the present application. As shown the reader includes a key reader anddecoder 40 and a mouse reader anddecoder 42. If a SAW type tag is employed on thekeyboard 10 and an active modulated backscatter system employed forwireless mouse 12, the interrogating field will be pulsed for the keyboard and continuous for the mouse and appropriate reader circuits employed. These may each be operable at different frequencies. Also each may have plural frequencies f1-fn. Plural frequencies for the key reader may prevent interference from simultaneously operated keys and may be limited to commonly activated keys such as ctrl, shift, alt, etc. Mouse decoder in turn may use plural frequencies as described in the '778 application. Other techniques for preventing interference from multiple tags being read simultaneously are known and may be employed instead of assigning unique frequencies to the commonly activated tags. For example, a protocol where a tag issues a brief response in a unique time slot or where a random response timing is used can minimize inter-tag interference without separate frequencies. - The decoded key and mouse information is provided to control
processing circuit 44 which converts the decoded information to conventionally formatted key and mouse control data which is provided to the computer processor online 46. Some or all of the functions of circuit 44 (as well as some functions ofdecoders 40, 42) may be provided in the computer processor, however, and this may provide cost advantages. - Referring to
FIG. 5 a reader block diagram is illustrated which shares circuitry with a wireless networking circuit. Such wireless networking circuits are well known, for example as defined in the WiFi specification, and as used herein also includes systems such as Bluetooth. 2.45 GHz is a commonly used frequency for such systems and 2.45 GHz SAW tags are also available. This combined circuit has advantages in space and cost for computer systems having such a wireless networking capability and for example the wireless network and key/mouse reader circuitry may be configured on a single circuit board. As shown the combined reader andwireless networking circuit 50 may include a sharedantenna 52 coupled to keyreader circuit block 54, wirelessnetwork circuit block 56 and mousereader circuit block 58 viaselective coupler 60. If the same antenna is used for transmit and receive the coupler may include a directional coupler and a switch (the double arrow lines may comprise separate signal paths from the directional coupler and are illustrated in this manner for convenience of illustration). The switching circuitry receives timing control signals from either of the circuit blocks which timing is communicated between the blocks vialines lines line 70. Although a shared antenna provides space advantages and some cost savings additional functions may be shared between circuit blocks. For example,circuit block 56 may control all transmit signals with separate decode blocks used for receiving and decoding functions. Alternatively, separate transmit circuits may be provided but a common decode block employed incircuit block 56. Finally, all functions may be implemented in acommon block 56. - A discrimination processing may be implemented by the readers of
FIG. 4 or 5 which allows multiple wireless keyboards to be used in relatively close proximity without interference. A first processing approach takes advantage of the distance detection feature of SAW tags and readers. In this approach the reader detects a coded response and the distance and compares it to a predetermined maximum distance, e.g., 6, 8 or 10 feet. If the distance exceeds this amount the key detection is rejected. Alternatively the reader may output distance and key codes to the computer system processor which then compares the distance to the defined maximum and accepts or rejects the key code. In either case the distance may be user settable but this user distance setting capability may be more readily implemented where the distance discrimination is made in the computer system processor. Another discrimination processing approach may employ using different codes in different keyboards and storing the valid codes for the keyboard in a table in the reader or computer system. In this approach the reader detects a coded response and compares it to the table of valid codes and accepts or rejects the key code. As in the prior approach this discrimination processing alternatively may be performed by the computer system processor. To allow switching of keyboards between computers the table may be stored in a nonvolatile memory on the keyboard accessible by the computer system via, e.g., a USB cable, or may be contained in a device driver, e.g., on a CD ROM or other storage, which ships with the keyboard. -
FIGS. 6A and 6B are top and side sectional views of akeyboard 10 employing a multi-layer structure and a planar antenna design. Referring first toFIG. 6A , a layer ofkeyboard 10 is illustrated employing a planar antenna pattern thereon. The generallyplanar tag antenna 24 may employ known patch antenna or multi-stripline designs which may be configured on the keyboard housing or part of the housing. For example, patch antenna designs are described in the above noted RFID Handbook (Chapter 4).The planar pattern may be generally split across the keyboard into columns or rows ofantennas 24 orantenna elements 28. Other configurations are also possible. The antenna configuration will be chosen for the specific implementation to maximize reflective coupling to the interrogating field from the reader. A second layer ofkeyboard 10 may comprisetags 20 and switches 22 connected to the tag antenna byconnection 26, as described in relation toFIG. 2 above. Thetag layer 82 may be configured on top of theantenna layer 84 as illustrated inFIG. 6B and connection 26 (FIG. 2 ) may connect toantenna 24 throughconductive vias 80.Tags 20, switches 22 andconnection 26 may be formed on a suitable substrate. Thelayer 86 with the keys thereon (shown inFIG. 1A ) is configured on top of the tag layer with the keys aligned with switches 22. - As noted above
antenna 24 may be optimized for the transmission of the data back to the reader, for example, to transmit data via backscatter modulation. For example, if a 2.45 GHz interrogating field is used approximately a half wavelength antenna or antenna element dimension may be employed. In addition to a patch antenna, for example,antenna 24 may be a half wavelength dipole antenna array configured over a substantial portion of the keyboard to provide a strong reflected signal.Plural antennas 24 may also be provided each respectively coupled to one or more circuits as described above.Plural antennas 24 may also be provided each respectively having a different orientation to reduce sensitivity to keyboard orientation. Also, other antenna designs may be employed, e.g., a bowtie antenna, multi-element half wavelength dipole, or folded dipole antenna design may be employed. - SAW tags and readers employ time domain decoding and this may be used to discriminate simultaneously activated keys by the use of unique time slots for simultaneously activated keys. This feature may exploit the teachings of
FIG. 17 of the '615 application reproduced asFIG. 7 herein. The pattern illustrated may comprise a timing signal encoded in the reflective pattern in a SAW tag circuit. Timing 118 may indicate the beginning of the SAW read window (as initiated by timing circuitry in the reader to discriminate noise) and, for example, slot orcode 120A may correspond to a first multi-function key (e.g., Ctrl), 120B a second multi-function key (e.g., Shift), 120C a third multi-function key (e.g., Alt), and 120D the alpha numeric keys (e.g., in a QWERTY keyboard). - It will be appreciated from the foregoing that the above described embodiments are purely illustrative examples and a variety of different implementations of both the system employing the keyboard, the reader and the keyboard itself are possible. For example, with respect to the overall system, depending on the keyboard read range of the system as implemented, the system employing the keyboard may also comprise an entertainment system as described in the above noted '156 patent, incorporated herein by reference, with the keyboard providing remote control input functions as described therein. Such an entertainment system may include a game system and the keys game control keys. Also, a variety of computing devices such as so called internet appliances and other desktop systems may employ the invention. Also, simpler controllers may employ the manually activated tag and reader as described with the manually activated input coupling the tag to the antenna as described to wirelessly initiate a control function with a coded response. Such a controller may have a single manual input such as a key or switch or plural manual inputs. Variations in the reader and tag implementations and layouts in turn are too numerous to describe in detail including a variety of different combinations of transmission schemes, antenna designs, modulation schemes, frequency ranges, etc.
Claims (12)
1. A method for short range wireless control, comprising:
wirelessly transmitting an interrogating field from a controlled device;
receiving the interrogating field at a control device having one or more manual inputs and modulating the interrogating field with a coded signal;
detecting the modulated interrogating field at the controlled device; and
controlling the controlled device operation based on the coded signal if the control device is within a predetermined distance determined by the modulated interrogating field received from the control device.
2. A method as set out in claim 1 , wherein the control device is a switch.
3. A method as set out in claim 1 , wherein the control device is a keyboard.
4. A method set out in claim 1 , wherein the controlled device is a computer system.
5. A wireless control system, comprising:
a controlled device including a wireless communication system, the wireless communication system including a source of an interrogating field and a reader;
a control device having one or more manual inputs and a modulator for modulating the interrogating field with a coded signal;
wherein the modulated interrogating field is detected by the reader in the controlled device; and
the controlled device wireless operation with the control device is enabled based on the coded signal received from the control device if the control device is within a predetermined distance as determined by the received modulated interrogating field.
6. A wireless control system as set out in claim 5 , wherein the control device is a switch.
7. A wireless control system as set out in claim 5 , wherein the control device is a keyboard.
8. A wireless control system as set out in claim 5 , wherein the controlled device is a computer system.
9. A wireless control system as set out in claim 5 , wherein the control device includes one or more passive transponder circuits.
10. A computer system, comprising:
a computer having a processor, display, a source of an interrogating field and associated reader detecting a modulated interrogating field; and
a keyboard coupled to communicate with the computer;
wherein the computer is adapted to wirelessly communicate with an external device through receipt of a modulation of the interrogating field;
wherein the keyboard includes an antenna adapted for coupling the interrogating field to the external device.
11. A computer system as set out in claim 10 , wherein said keyboard is wirelessly coupled to the computer.
12. A computer system as set out in claim 11 , wherein said keyboard includes a second antenna adapted to wirelessly couple to the computer.
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US15/918,982 US20180203524A1 (en) | 2006-02-27 | 2018-03-12 | Wireless backscatter communication system and method |
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US10/003,778 US7027039B1 (en) | 2000-10-17 | 2001-10-31 | Computer system with passive wireless mouse |
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US11/363,388 US7525453B2 (en) | 2000-10-17 | 2006-02-27 | Computer system with enhanced range passive wireless keyboard |
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US14/252,634 US20140225756A1 (en) | 2000-10-17 | 2014-04-14 | Wireless control system and method |
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US7006014B1 (en) * | 2000-10-17 | 2006-02-28 | Henty David L | Computer system with passive wireless keyboard |
US7525453B2 (en) * | 2000-10-17 | 2009-04-28 | Henty David L | Computer system with enhanced range passive wireless keyboard |
US7601141B2 (en) * | 2002-11-26 | 2009-10-13 | Nexus Medical, Llc | Pressure actuated flow control valve |
KR100888982B1 (en) | 2006-12-06 | 2009-03-17 | 천재권 | Access control device for data prodessing device using rfid |
US7791506B2 (en) * | 2007-03-30 | 2010-09-07 | Zf Friedrichshafen Ag | Configurable networked user interface and switch pack |
US20090143101A1 (en) * | 2007-11-30 | 2009-06-04 | Broadcom Corporation | Communications Device and User Interface Device with Millimeter Wave Transceiver and Methods for use Therewith |
US20090143143A1 (en) * | 2007-12-04 | 2009-06-04 | Broadcom Corporation | Gaming object and game console with millimeter wave interface and methods for use therewith |
JP2011254238A (en) * | 2010-06-01 | 2011-12-15 | Sony Corp | Information processing device, information processing method and information processing system |
US20130311146A1 (en) * | 2011-01-28 | 2013-11-21 | Interactive Control Solutions, Llc | Design and authorization system for wireless control |
CN102221895A (en) * | 2011-06-24 | 2011-10-19 | 鸿富锦精密工业(深圳)有限公司 | Wireless keyboard and computer with same |
CN103376901B (en) * | 2012-04-25 | 2016-09-14 | 罗普特(厦门)科技集团有限公司 | Radio input device and apply the electronic installation of this radio input device |
US9031689B1 (en) | 2012-07-13 | 2015-05-12 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Systems and methods for RFID-enabled dispenser |
US9312950B1 (en) | 2014-07-14 | 2016-04-12 | Google Inc. | Antenna sharing in mobile devices for backscatter radio |
US9892351B2 (en) | 2014-11-11 | 2018-02-13 | Symbol Technologies, Llc | Bluetooth low energy i(BLE)-based asset tag with integrated scanner for, and method of, transmitting an asset-identifying code as a beacon transmission |
DE102015107944A1 (en) * | 2015-05-20 | 2016-11-24 | Miele & Cie. Kg | Control device for the control of household electrical appliances |
US9600756B1 (en) * | 2015-10-07 | 2017-03-21 | Richard Hwang | Wireless input device without internal power supply |
CN108572749A (en) * | 2017-03-14 | 2018-09-25 | 中兴通讯股份有限公司 | A kind of terminal control method and system, setting adaptive device and mobile terminal |
US20230289244A1 (en) * | 2022-01-21 | 2023-09-14 | Hewlett-Packard Development Company, L.P. | Peripheral device positions |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3713102A (en) * | 1970-04-23 | 1973-01-23 | S Martin | Pulse interrogation article-sorting system |
US5572226A (en) * | 1992-05-15 | 1996-11-05 | Micron Technology, Inc. | Spherical antenna pattern(s) from antenna(s) arranged in a two-dimensional plane for use in RFID tags and labels |
US5892441A (en) * | 1996-06-26 | 1999-04-06 | Par Government Systems Corporation | Sensing with active electronic tags |
US6133833A (en) * | 1999-02-25 | 2000-10-17 | Motorola, Inc. | Wireless add-on keyboard system and method |
US6285295B1 (en) * | 1998-12-14 | 2001-09-04 | Martin S. Casden | Passive remote programmer for induction type RFID readers |
US6353406B1 (en) * | 1996-10-17 | 2002-03-05 | R.F. Technologies, Inc. | Dual mode tracking system |
US6664949B1 (en) * | 1999-11-05 | 2003-12-16 | International Business Machines Corporation | Interoperable/heterogeneous environment keyboard |
US7406299B1 (en) * | 1999-10-15 | 2008-07-29 | Nortel Networks Limited | Wireless communications method, system and terminal therefor utilising a plurality of simultaneous, data bearing, communications links for conveying data between a plurality of base stations and a terminal |
US7525453B2 (en) * | 2000-10-17 | 2009-04-28 | Henty David L | Computer system with enhanced range passive wireless keyboard |
US7535424B2 (en) * | 2006-02-28 | 2009-05-19 | Henty David L | Passive wireless keyboard powered by key activation |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5911529A (en) | 1997-06-30 | 1999-06-15 | Compaq Computer Corporation | Typing power |
US6388561B1 (en) | 1998-04-30 | 2002-05-14 | Micron Technology, Inc. | Method and apparatus for remote data telemetry and point of sale method and apparatus |
US6531964B1 (en) * | 1999-02-25 | 2003-03-11 | Motorola, Inc. | Passive remote control system |
US6373469B1 (en) | 1999-08-10 | 2002-04-16 | Dexin Corporation | Radio frequency computer mouse |
US6617962B1 (en) * | 2000-01-06 | 2003-09-09 | Samsys Technologies Inc. | System for multi-standard RFID tags |
US6937615B1 (en) * | 2000-02-18 | 2005-08-30 | Logitech Europe S.A. | Multi-purpose bridge for wireless communications |
US6650254B1 (en) * | 2000-03-13 | 2003-11-18 | Ergodex | Computer input device with individually positionable and programmable switches |
US7015833B1 (en) * | 2000-08-31 | 2006-03-21 | Logitech Europe S.A. | Multilink receiver for multiple cordless applications |
US6708228B1 (en) * | 2000-11-09 | 2004-03-16 | Microsoft Corporation | Automatic computer input device association |
US6982658B2 (en) * | 2001-03-22 | 2006-01-03 | Motorola, Inc. | Keypad layout for alphabetic symbol input |
US6791478B2 (en) * | 2001-10-26 | 2004-09-14 | Chih-Jen Lo | Integrated circuit device for a wireless keyboard array |
US20030093791A1 (en) | 2001-11-09 | 2003-05-15 | Julia Luc E. | System and method for interactive television |
US6966493B2 (en) * | 2001-12-18 | 2005-11-22 | Rf Saw Components, Incorporated | Surface acoustic wave identification tag having enhanced data content and methods of operation and manufacture thereof |
US6708881B2 (en) * | 2002-01-30 | 2004-03-23 | Rf Saw Components, Inc. | Reader for a high information capacity SAW identification tag and method of use thereof |
US6756880B2 (en) * | 2002-03-21 | 2004-06-29 | Rf Saw Component Incorporated | Reader and response control system for discrimination between multiple surface acoustic wave identification tags and method of operation thereof |
WO2003103985A1 (en) * | 2002-04-22 | 2003-12-18 | Gordon David C | Toothbrush assembly with toothpaste dispenser |
KR20050013233A (en) * | 2002-06-26 | 2005-02-03 | 노키아 코포레이션 | Bluetooth RF based RF-tag read/write station |
US6958696B2 (en) * | 2002-10-09 | 2005-10-25 | Rf Saw Components, Inc. | Transfer function system for determining an identifier on a surface acoustic wave identification tag and method of operating the same |
US6759789B2 (en) | 2002-10-18 | 2004-07-06 | Rf Saw Components, Inc. | Surface acoustic wave identification tag having an interdigital transducer adapted for code discrimination and methods of operation and manufacture thereof |
US6919802B2 (en) * | 2003-07-08 | 2005-07-19 | Rf Saw Components, Inc. | Multi-layer method of accommodating code collisions from multiple surface acoustic wave identification tags |
-
2006
- 2006-02-27 US US11/363,388 patent/US7525453B2/en not_active Expired - Fee Related
-
2009
- 2009-04-27 US US12/430,822 patent/US8698656B2/en active Active
-
2014
- 2014-04-14 US US14/252,634 patent/US20140225756A1/en not_active Abandoned
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3713102A (en) * | 1970-04-23 | 1973-01-23 | S Martin | Pulse interrogation article-sorting system |
US5572226A (en) * | 1992-05-15 | 1996-11-05 | Micron Technology, Inc. | Spherical antenna pattern(s) from antenna(s) arranged in a two-dimensional plane for use in RFID tags and labels |
US5892441A (en) * | 1996-06-26 | 1999-04-06 | Par Government Systems Corporation | Sensing with active electronic tags |
US6353406B1 (en) * | 1996-10-17 | 2002-03-05 | R.F. Technologies, Inc. | Dual mode tracking system |
US6285295B1 (en) * | 1998-12-14 | 2001-09-04 | Martin S. Casden | Passive remote programmer for induction type RFID readers |
US6133833A (en) * | 1999-02-25 | 2000-10-17 | Motorola, Inc. | Wireless add-on keyboard system and method |
US7406299B1 (en) * | 1999-10-15 | 2008-07-29 | Nortel Networks Limited | Wireless communications method, system and terminal therefor utilising a plurality of simultaneous, data bearing, communications links for conveying data between a plurality of base stations and a terminal |
US6664949B1 (en) * | 1999-11-05 | 2003-12-16 | International Business Machines Corporation | Interoperable/heterogeneous environment keyboard |
US7525453B2 (en) * | 2000-10-17 | 2009-04-28 | Henty David L | Computer system with enhanced range passive wireless keyboard |
US7535424B2 (en) * | 2006-02-28 | 2009-05-19 | Henty David L | Passive wireless keyboard powered by key activation |
Also Published As
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US20060202868A1 (en) | 2006-09-14 |
US7525453B2 (en) | 2009-04-28 |
US8698656B2 (en) | 2014-04-15 |
US20090215395A1 (en) | 2009-08-27 |
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Owner name: EZERO TECHNOLOGIES LLC, CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HENTY, DAVID L.;REEL/FRAME:032669/0670 Effective date: 20140122 |
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