Abstract: A method for monitoring a room (R) is specified, in which acoustic properties ({circle around (S)}, W) of the room (R) are determined, changes (?) in the acoustic properties ({circle around (S)}, W) of the room (R) are detected, the changes (?) are compared with prescribed criteria (?{circle around (S)}, ?W)and an action (?) is triggered if the prescribed criteria (?{circle around (S)}, ?W) have been satisfied. This makes it possible to monitor a room with the aid of an active noise reduction system. If there is no need to monitor a room, the system can be used for active noise reduction.

Abstract: The present invention discloses an automatic storage box comprising a bottom case, a receptacle set, a receptacle, a top cover, and a rotary cover set. The inner surface of the bottom case is concaved to form an accommodation basin. A battery bay and a proximity sensor set are respectively arranged at two sides of the accommodation basin, and a dynamic device is arranged therebetween. The receptacle set and the receptacle are respectively detachably installed to the base case. The inner portion of the top cover is concaved downward to form a recess, and the lower rim of the top cover has a positioning element used to engage with the receptacle set. The rotary cover set is arranged above the top cover and pivotally coupled to the receptacle set. When the proximity sensor set detects the approach of a human body, the dynamic device instantly drives the movable cover to rotate to open.

Abstract: A security system having a control and a sensor attachable to an article to be monitored. The sensor has a plurality of different states, among which are an armed state and a breached state. The sensor and control interact so that the control causes a detectable signal to be generated as an incident of the sensor being changed from the armed state into the breached state. The sensor has a housing with a wall structure bounding a cavity. The sensor further has a source of illumination that projects light. The wall structure has a light transmissive portion through which light from the illumination source projects from within the cavity to be visible externally of the wall structure.

Abstract: A method for generating information related to a first object based on sensor data associated with a second object includes determining a containment hierarchy between the first object and the second object. Sensor data associated with the second object is determined using the containment hierarchy. A quality of data index is determined for the sensor data associated with the second object using the containment hierarchy. Information related to the first object is generated based on the sensor data associated with the second object and the quality of data index.

Abstract: A system for location tracking using passive tags includes a reader and a location tracker. The reader receives an identifier associated with a first passive tag. The location tracker receives the location of the passive tag, and maps the location of the first passive tag to the identifier associated with the first passive tag. The location tracker determines the location of an object based on the location of the first passive tag. The location tracker may receive the location of a second passive tag, and map the location of the second passive tag to an identifier associated with the second passive tag. The location tracker may update the location of the object using the location of the second passive tag in response to the reader receiving the identifier associated with the second passive tag.

Abstract: A property anti-theft apparatus includes a transmitting unit and a receiving unit. The transmitting unit is installed on a property, and the transmitting unit includes a sensing device and a radio transmitting circuit. The sensing device is used for sensing a movement of the property. When the sensing device senses that the movement of the property exceeds a predetermined distance, it triggers the radio transmitting circuit to transmit a radio signal. The receiving unit is used for receiving the radio signal, so as to alert the movement of the property.

Abstract: A system including a radio frequency identification (RFID) network and a wireless local area network (WLAN). The RFID network transfers ultra-wide band signals between a reader and a tag. In the wireless local area network (WLAN) an access point communicates with a WLAN transceiver using WLAN signals. The reader is operatively attached to either the wireless access point or the WLAN transceiver and the WLAN is a back haul network of the RFID network. Co-existence of the two networks is provided either by time division between the ultra-wide band signals and WLAN signals; and/or receiver isolation of said RFID network from said WLAN signals.

Abstract: An apparatus and method for managing power of a radio frequency identification (RFID) tag are provided. It is possible for the apparatus for managing the power of the RFID tag to effectively reduce power consumption of the RFID tag by measuring the power strength of a radio frequency (RF) signal received from an RFID reader and adjusting a level of transmission power based on the measured power strength of the signal.

Abstract: A radio frequency identification system includes: supplying a radio frequency identification tag including providing a radio frequency identification transponder and writing transponder content to the radio frequency identification transponder; and feeding the radio frequency identification tag for an assembly line.

Abstract: A circulation management system is provided that includes an object identification tag attached to an object for identifying the object; multiple interrogator antennas for detecting the object identification tag, the interrogator antennas being provided for corresponding destinations to which the object is circulated; and a management apparatus to which the interrogator antennas are connected. The management apparatus is configured to determine by which one of the interrogator antennas the object identification tag is detected, thereby determining that the object having the object identification tag attached thereto belongs to one of the destinations for which the one of the interrogator antennas is provided. A table is provided in which the correspondence between the object identification tag and the object is recorded, and the object whose circulation status is managed by attaching the object identification tag thereto is identified by referring to the table.

Abstract: An apparatus and method for detecting a wake-up burst of an active RFID tag are provided. The apparatus and method, for detecting the wake-up burst of the active RFID tag, are capable of reducing power consumption of the RFID tag by enabling the RFID tag when a RFID reader starts to communicate.

Abstract: The present invention describes an RFID antenna manufacturing system whereby the RFID antenna becomes an integral part of an integrated circuit package. The RFID manufacturing system contemplated by this invention includes photoresist manufacturing techniques to produce a template or die specifically designed to mass produce RFID transponders whereby the chip and antenna becomes one integrated unit. The RFID antenna template or die is precisely tuned, using trimming algorithms and laser technology, to resonate with electro magnetic signal increments of 2 megahertz. According to this system each increment is assigned to a different category in a supply chain. This invention reduces the cost, size and weight of prior art RFID transponders. This invention reduces signal to noise ratio by producing precisely tuned antennas which provide a gatekeeper function directly correlated to ambient electro magnetic signals.

Abstract: An apparatus including an enclosure for an RFID reader to be affixed to a storage container; an RFID reader that scans a first storage container using a first antenna and a second storage container using a second antenna; and a networked system of RFID apparatuses including a primary RFID apparatus and secondary RFID apparatuses that are controlled by the primary RFID apparatus.

Abstract: Leak detection apparatuses located, at least in part, in the deadspace below a floor in an abode wherein the leak detection apparatus captures, detects and signals the presence of leaking water and other aqueous solutions.

Abstract: A system for distinguishing between a fire sprinkler water flow and a domestic use water flow by supplying water to a dwelling through a multipurpose piping system to at least one domestic use and at least one fire sprinkler and providing a means for distinguishing between the fire sprinkler and domestic flow.

Abstract: A light guide part (20) is provided along a Z-axis on a side surface of a case (2) of a relay (1). The light guide part is a thick portion formed of a material forming the side surface of the case, and is structurally integral with the other parts of the case. Also, a light emitting device which emits light in response to application of a voltage to coil terminals (41) is provided within the relay (1) (case). A reflection surface (201) which reflects illuminating light emitted from the light emitting device in a (+Y) direction in a (+Z) direction is placed at a lower end of the light guide part. Illuminating light reflected by the reflection surface is guided to a display surface (200) placed at an upper end of the light guide part, to illuminate the display surface.

Abstract: This application is directed to a shock sensor mounted in an electronic device. The shock sensor includes both active and passive shock detection methods that allow a technician to determine whether the electronic device was subjected to a shock event that exceeded an impact threshold level. The shock sensor may include shock detection contacts that form an electrical circuit that remains open in the absence of a shock event that exceeds an impact threshold level. In response to a significant shock event, a movable component or substance of the shock sensor may move from a first position to a second position, thereby closing the electrical circuit formed by the shock detection contacts. The change in circuit may be detected and used to provide active indication of whether the electronic device has been subjected to a substantial shock event. In addition, the shock sensor may be observed to passively determine whether the electronic device has been subjected to a substantial shock event.

Abstract: A sensor device (6) for a toilet having a seat moveable between a raised position and lowered position is provided. The sensor device (6) includes a housing (8) adapted to be removably coupled to the toilet and a controller (18) disposed within the housing (8). The sensor device (6) further includes a motion sensor (16) in communication with the controller (18) and adapted to activate a first signal when the seat is in either the raised or lowered position and a user is positioned within a first predetermined range of the toilet.

Abstract: A protective cover for a sensing surface of a control sensor/proximity detector. The protective cover comprises a material having a preferred shore-A durometer hardness in the range of 60-90, a preferred tensile strength of 1320 psi (92.82 kilogram-force per square centimeter (kgf/cm2)) or greater, a preferred dielectric strength of around 300 volts/mil, and a preferred thermal conductivity of 0.3 to 0.5×1031 3 cal/sec2, and a temperature stability of about ?55 to +200 degrees Celsius. The protective cover may be adhesively secured to the proximity detector so that the sensing surface is effectively covered. The protective cover may be in the form of a sheet or may be in the form of a cap. Preferably, the protective cover comprises silicone material.

Abstract: The technical disclosure of my invention is the pre-recorded sayings inside a sound module housed in a collectable plush bear, and also the fact that both pre-recorded and recordable sound modules will be used with specific wording that will be used in the pre-recorded left hand of the plush bear. The pre-recorded sayings are as follows: We can do all things through Christ who strenghtens us. America is free because of you. You are my Hero.

Abstract: A method (400) and a system (100) for selecting an alert mode for a first communication device (105). The method can include receiving at least one alert setting indicator (125, 130, 135, 145) from at least a second communication device (110, 115, 120, 140), processing the at least one alert setting indicator to identify an alert mode for the first communication device that corresponds to the at least one alert setting indicator, and automatically activating the identified alert mode on the first communication device.

Abstract: A system for universally controlling the functionality of portable electronic devices in a localized geospatial area is disclosed. A control signal encoded with instructions based on a predetermined protocol is sent from a RF control point transmitter. The encoded signal is received and decoded by portable electronic devices in the area and an action is performed in response to the control signal. Actions can include enabling or disabling a specific function of the portable electronic device, displaying messages on the portable electronic device, or transmitting information from the portable electronic device back to the control point. Actions remain active while in that area or for specified time periods to various levels of precision and reliability through a combination of settings or timing functions.

Abstract: A barrier operator is configured to learn and receive disparate wireless transmission signals to control movement of a barrier. The operator includes a receiver core circuit adapted to receive wireless transmission signals containing known and unknown formatted data words. A microcontroller is adapted to determine a fixed code portion of the unknown formatted data words. The microcontroller is also associated with a memory unit and connected to the receiver core circuit for storing in the memory unit the known formatted data words and the unknown formatted data words if the fixed code portion can be determined when the microcontroller is in a learn mode. The receiver core circuit may also scan only frequencies associated with learn codes, pre-selected frequencies, and incremental frequencies within a predetermined range of frequencies.

Abstract: A multiple barrier control system includes a plurality of barrier operators configured to move associated access barriers between limit positions. Each of the barrier operators are enabled to communicate with one or more local transmitters. The local transmitters may maintain an all-close button, an all-open button, and an all-stop button, which are associated with corresponding functions maintained by the barrier operators. Upon the actuation of one of the buttons, the associated function is simultaneously carried out by each of the associated barrier operators. Additionally, a portable network control may invoke the simultaneous control of functions at each of the barrier operators via an associated communication network. Moreover, scenes may be created wherein the barrier operators and other accessories, such as lights and appliances, may be moved or actuated to a desired status upon actuation of a scene button on either the local transmitter or the portable network control.

Abstract: A method and system for conducting a seismic survey by lowering a string of intelligent clampable sensor pods with 3-C sensors into a borehole. The string of pods is serially interconnected by a cable having a conductor pair which provides both power and data connectivity. The uppermost sensor pod is connected to a downhole telemetry and control module. The cables and pods use connectors to allow assembly, customization, repair, and disassembly on site. Each pod has an upper and a lower connector, a processor, and memory which is coupled to both the upper and the lower connectors. Each pod is capable of simultaneous and independent serial communications at each connector with the memory. The telemetry and control module is designed to query the pods to determine the system configuration. The telemetry and control module then simultaneously triggers all pods to acquire data, the pods storing the collected data locally in the memory.

Abstract: A control system for a vehicle is provided. The control system includes a signal processing module that receives a sensor signal and extracts a plurality of sample points from the sensor signal. A computation module computes a summation of the sample points, computes a summation of squares of the sample points, and computes a standard deviation based on the summation of the sample points and the summation of the squares of the sample points. A control module generates a control signal based on the sensor signal and the standard deviation.

Abstract: The present technology relates to protocols relative to utility meters associated with an open operational framework. More particularly, the present subject matter relates to protocol subject matter for advanced metering infrastructure, adaptable to various international standards, while economically supporting a 2-way mesh network solution in a wireless environment, such as for operating in a residential electricity meter field. The present subject matter supports meters within an ANSI standard C12.22/C12.19 system while economically supporting a 2-way mesh network solution in a wireless environment, such as for operating in a residential electricity meter field, all to permit cell-based adaptive insertion of C12.22 meters within an open framework. Cell isolation is provided through quasi-orthogonal sequences in a frequency hopping network. Additional features relate to apparatus (both network and device related) and methodology subject matters relating to uplink routing without requiring a routing table.

Abstract: The present invention relates to a remote display module (RDM) for display a resource consumption value synchronized with a resource consumption value indicated by a meter metering resource consumption. The RDM is configured with one or more inputs that are electrically associated with the pulse output for a utility meter. The RDM tracks continuous values and associated customer-values. Customers-values may be reset by a customer allowing the customer to easily track resource consumption.

Abstract: An electronic electric meter for use in a networked automatic meter reading environment. The meter includes a meter microcontroller, a measurement microcontroller, a communication microcontroller and spread spectrum processor, and a plurality of other communication interface modules for communicating commodity utilization and power quality data to a utility. The meter measures electricity usage and monitors power quality parameters for transmission to the utility over a spread spectrum local area network (LAN) to a remotely located gateway node. The gateway node transmits this data to the utility over a commercially available fixed wide area network (WAN). The meter also provides direct communication to the utility over a commercially available network interface that plugs into the meter's backplane or bus system, bypassing the local area network communication link and gateway node.

Abstract: The present invention discloses a system for monitoring and estimating the consumption of energy resources in real-time. The system includes an interactive user module, a measuring unit and a wireless network. The measuring unit is interfaced to a utility meter. Optionally, the measuring unit can also function as a stand alone device. The measuring unit is further connected to the interactive user module via the wireless network. The system monitors energy resource consumption such as electricity, gas or water consumption in real-time, generates and displays graphs of energy resource consumption over user selected time periods and enables communication with at least one utility company. The system increases the users' awareness of their energy consumption and aids users in dynamic or deregulated pricing environments to shed load when the energy resource is most expensive. With knowledge of their energy use, the users can take proactive steps to control their energy consumption and save money.

Abstract: An object detector for a vehicle transmits a beam of electromagnetic waves forward to scan a target area, receives reflected waves from an object in front, and detects the object from received signals. Received signals are cumulatively added up for each of areas into which the target area is divided. Noise is removed from obtained data by time series filtering. If the value of a peak in data is less than that of the corresponding peak obtained in the previous scan by more than a specified value, such data are considered as an after image and not detected as an object.

Abstract: The present invention relates to a road guidance system, which performs RF communication between a road guidance paving block and a wireless sensing stick. The road guidance system includes a road guidance paving block (200) and a wireless sensing stick (100). The coil antenna (210) of the road guidance paving block receives externally applied radio waves, generates an induced electromotive force, and uses the induced electromotive force as its required power. The road guidance paving block (200) reads location-related information previously stored in memory depending on each operation, and transmits the location-related information to the outside through the coil antenna. The wireless sensing stick (100) provides predetermined radio waves to the road guidance paving block to activate the road guidance paving block, receives location information from the road guidance paving block, processes the location information, and outputs road guidance voice information through voice output means.

Abstract: An adaptive range vehicle recovery system including an adaptive range vehicle locating unit including a narrowband baseband generator for generating a narrowband signal, a wideband baseband generator for generating a wideband signal, a timing control circuit responsive to an activation signal to transmit, alternately, said narrowband signal at a first rate, and said wideband signal at a second rate and responsive to a track signal to transmit one of said wideband and narrowband signals at a third, different, rate; and also to an adaptive range vehicle recovery system including an adaptive range vehicle track unit including a data decoder including, a wideband decoder for detecting data from a wideband baseband signal, a narrowband decoder for detecting data from a narrowband baseband signal, a bandwidth detector responsive to a received signal to distinguish narrowband and wideband signals and an input switching circuit responsive to said bandwidth detector for directing the wideband signal to the wideband de

Abstract: Radios, systems, and methods for providing real-time information about user-defined geographic locations are disclosed. One radio includes memory configured to store a data file representing a geographic location(s) defined by a user, and a receiver configured to receive signals including real-time information about a plurality of geographic locations. A processor is included to compare each of the plurality of geographic locations to the user-defined geographic location(s), and the information about the user-defined geographic locations is provided to the user. A system includes a computing device to create a data file of user-defined geographic locations, and transmit the data file to the radio. One method includes storing user-defined geographic location(s) in memory and receiving signals including information about a plurality of geographic locations.

Abstract: A numeric key pad is provided for efficiently entering numbers and symbols into a computer. The numeric key pad includes a number region having digits 1-9 arranged in a 3×3 grid, the 3×3 grid having N, S, E, W, NE, SE, NW, SW, and Central positions. The numeric keypad also includes a nearest neighbor symbol region having a first plurality of symbols, each symbol being at a nearest neighbor position of the 3×3 grid, the first plurality of symbols being selected from the set including: esc, $, Tab, Backspace, =, comma, #, %, ,, (, ), space. The numeric keypad includes all of the standard keys, along with non-standard yet often-used keys. The non-standard keys are located with the standard keys such that they all fall within the natural finger extension range of a user. The numeric key pad can also be advantageously incorporated into an alphanumeric keyboard.

Abstract: A mobile communication terminal having QWERTY keys and a method for outputting Dual Tone Multi-Frequency (DTMF) signals thereof are disclosed. The user inputs information including alphabetic characters that is requested by a directory system, while viewing the alphabetic characters marked on the QWERTY keys. The mobile communication terminal outputs DTMF signals of symbols marked on the input QWERTY keys identical to the DTMF signals of the corresponding symbols of keys arrayed in a conventional 3×4 key array format. The alphabetic keys of the QWERTY keys output DTMF signals identical to those of the keys of the 3×4 array format in an alphabet input mode. Therefore, the user can easily input information requested by the directory system while viewing the symbols marked on the QWERTY keys, without requiring the user to memorize the array of alphabetic characters of the 3×4 key array format.

Abstract: Wireless handheld mobile communication device and keyboard therefore having a keyfield including a plurality of depressible keys arranged in rows that are distributed about a vertical centerline (Vc) of the keyboard. Each of the depressible keys has a top engagement surface of which an upper inboard portion is raised relative a lower outboard portion thereof. The top engagement surface of each of the depressible keys is ramped from the lower outboard portion toward the upper inboard portion. Each top engagement surface is generally crest shaped, with the apex of the crest running generally diagonally across the respective key with the rest of the top engagement surface falling away from the crest toward the upper outboard portion and the lower inboard portion of the key. The top engagement surface of each of the depressible keys terminates at an upper edge thereof in an elevated ridge down from which the balance of the respective top engagement surface slopes.

Abstract: An input key and a detection circuit are not directly connected but are connected via a first capacitor. This prevents electrostatic noise obtained by the input key from directly entering the detection circuit, thereby protecting the detection circuit. Further, a first coupling line adapted to establish a connection between the input key and one of a pair of counter electrodes and a second coupling line adapted to establish a connection between the other counter electrode and the detection circuit are surrounded by ground electrodes. Thus, the effect of electrostatic noise is suppressed to provide a stable operation of the capacitive switch.

Abstract: An apparatus for processing a signal and method thereof are disclosed. Data coding and entropy coding are performed with interconnection, and grouping is used to enhance coding efficiency. The present invention includes the steps of hierarchically extracting identification information indicating at least three or more data coding schemes. The identification information indicating two coding schemes having high frequencies of use for the identification information are extracted from different layers.

Abstract: Systems and methods of storing previously transmitted data and using it to reduce bandwidth usage and accelerate future communications are described. By using algorithms to identify long compression history matches, a network device may improve compression efficiently and speed. A network device may also use application specific parsing to improve the length and number of compression history matches. Further, by sharing compression histories, compression history indexes and caches across multiple devices, devices can utilize data previously transmitted to other devices to compress network traffic. Any combination of the systems and methods may be used to efficiently find long matches to stored data, synchronize the storage of previously sent data, and share previously sent data among one or more other devices.

Abstract: Systems and methods of storing previously transmitted data and using it to reduce bandwidth usage and accelerate future communications are described. By using algorithms to identify long compression history matches, a network device may improve compression efficiently and speed. A network device may also use application specific parsing to improve the length and number of compression history matches. Further, by sharing compression histories and compression history indexes across multiple devices, devices can utilize data previously transmitted to other devices to compress network traffic. Any combination of the systems and methods may be used to efficiently find long matches to stored data, synchronize the storage of previously sent data, and share previously sent data among one or more other devices.

Abstract: There is offered a Gray code counter with which a delay time of a critical path is reduced and a fast operation is made possible. A first Gray code bit Q0 is obtained by outputting an output signal Q0o of an RDFF 2 through an RDFF 31 to synchronize with a clock CLK. A second Gray code bit Q1 is obtained by outputting an output signal Q1o of an RDFF 2 through an RDFF 32 to synchronize with the clock CLK. A third Gray code bit Q2 is obtained by delaying an output signal Q2o of an RDFF 4 with a selection circuit 21 and outputting it through an RDFF 33 to synchronize with the clock CLK. A fourth Gray code bit Q3 is obtained by delaying an output signal Q3o of an RDFF 5 with an AND circuit 11 and a selection circuit 22 and outputting it through an RDFF 34 to synchronize with the clock CLK. Higher bits of the Gray code are similarly generated.

Abstract: This disclosure is directed to techniques for memory efficient variable to fixed length (VF) coding techniques for a variety of applications, such as media coding. For example, such techniques may be applied to code digital video, image, audio, or speech data. The techniques described in this disclosure may utilize algebraic properties of VF coding trees constructed using Tunstall or Khodak algorithms, and employ combinatorial enumeration techniques for construction, encoding and decoding of codewords. For some applications, the VF coding techniques may be implemented within media encoders, decoders, or combined encoder-decoders (CODECs). Also, in some aspects, various attributes defining a VF coding tree constructed according to this disclosure may be provided in a memory efficient data structure stored in memory associated with a coding device.

Abstract: Systems and methods of storing previously transmitted data and using it to reduce bandwidth usage and accelerate future communications are described. By using algorithms to identify long compression history matches, a network device may improve compression efficiently and speed. A network device may also use application specific parsing to improve the length and number of compression history matches. Further, by sharing compression histories, compression history indexes and caches across multiple devices, devices can utilize data previously transmitted to other devices to compress network traffic. Any combination of the systems and methods may be used to efficiently find long matches to stored data, synchronize the storage of previously sent data, and share previously sent data among one or more other devices.

Abstract: The sampling time in a multichannel analog-to-digital converter is programmed with a circuit comprising a memory register with memory locations, which can be respectively coupled to the channels of the converter. The memory locations of the register are able to store a signal identifying a sampling-time value selected for each individual channel of the converter. The circuit likewise comprises a converter module coupled to the memory register for converting the signal identifying the sampling-time value into a corresponding signal for driving the respective channel of the converter for a sampling time corresponding to the sampling time selected. The circuit can be actuated in a synchronized way with the converter so as to vary selectively the sampling time applied to the channels of the converter in the course of operation.

Abstract: An electronic chip has a data input for receiving an input digital data signal with a data frequency, a plurality of switches, and a logic circuit operatively coupled with both the plurality of switches and the data input. The logic circuit controls the switches to be in one of a DAC mode or a mixer mode. The DAC mode causes the switches to convert the input digital data signal into a DAC analog signal having about the data frequency. The mixer mode, however, causes the switches to convert the input digital data signal into a mixed analog signal having a mixer frequency that is higher than the data frequency.

Abstract: A digital-analog converter including a first selection circuit of switch elements, which are coupled to each other and to a high potential power supply, and a second selection circuit of switch elements, which are coupled to each other and to a low potential power supply. First and second voltage dividing circuit each include series-connected resistor elements, each coupled between adjacent switch elements of the corresponding selection circuit. A control circuit provides a control signal to the selection circuits to activate one of the switch elements in each selection circuit and couple the activated switch element to the corresponding potential power supply. The first and second voltage dividing circuits divide voltages of the high and low potential power supplies with the resistor elements between the activated switch elements.

Abstract: A phase rotator generates an output signal having plurality of possible output phases with reduced phase jitter. The low jitter phase rotator includes a plurality of differential amplifiers configured to receive a plurality of input differential signals having different phases, and configured to generate a plurality of weighted signals responsive to the plurality of input differential signals. A plurality of digital-to-analog converters (DAC) are arranged into a plurality of groups, each group of DACs configured to provide current for one of the corresponding differential amplifiers. The number of active DACs in each group of DACs determines a relative weighting of the weighted signals, where relative weighting determining an output phase of an output signal of the phase rotator. The DACs are configured to adjust the output phase of the phase rotator. At a kth phase, N/4 adjacent DACs are activated that are indexed as m0, m1, . . . m((N/4)?1), wherein N is the number of said plurality of DACs.

Abstract: Provided is a digital/analog converter including a voltage dividing unit that includes a plurality of voltage dividing elements and divides a reference voltage by voltage division; a first decoder that selects a plurality of voltages among the voltages divided by the voltage dividing unit; a first voltage output unit that is connected to nodes among adjacent voltage dividing elements of the voltage dividing unit and the first decoder, and outputs a plurality of voltages selected by the first decoder; a second decoder that selects any one of the plurality of voltages output from the first voltage output unit; and a second voltage output unit that is connected to the first voltage output unit and the second decoder and outputs the voltage selected by the second decoder.

Abstract: A touch screen system includes a touch screen assembly (30,31) and a touch screen controller (1A) coupled to terminals (24,25,26,27) of the touch screen assembly (30,31), the touch screen controller (1A) including a controller (41) and an analog to digital converter (22) for generating multiple digital data numbers representing multiple coordinate values, respectively, of a particular touch point (Q) of the touch screen assembly (30,31) in response to control signals (42) generated by the controller (41). A sorting technique is performed to sort the digital data numbers in order of their values, respectively. An averaging technique is performed on at least some of the sorted digital data numbers, including a median sorted digital number.