Abstract: An interactive alarm clock and method are provided. Specifically, the alarm clock of the present invention is programmable by a user so that distinct alarm signals can be designated. In a typical embodiment, distinct alarm signals are designated based upon volume level, alarm type and/or alarm signal harmonics. For example, a first alarm signal could be produced at a first designated volume level. If the first alarm signal is snoozed, a second alarm signal would later be produced at a second (e.g., higher) designated volume level.

Abstract: An magneto-optical disk device (100) includes a magnetic head (11), a DC magnetic field applying device (12), an optical head (13) and a magnetic field control circuit (16). The DC magnetic field applying device (12) applies a DC magnetic field to a magneto-optical recording medium (10) through a core of the magnetic head (11). The magnetic field control circuit (16) applies the DC magnetic field of a variable intensity to the magneto-optical recording medium (10) to determine the appropriate intensity of the DC magnetic field providing an error rate not exceeding a predetermined reference value in a reproduced signal of a predetermined recording pattern detected by the optical head (13). Consequently, the signal can be accurately reproduced from the magneto-optical recording medium (10) by domain-enlarging reproduction using the DC magnetic field.

Abstract: A magnetic head is provided with a substrate and a magnetic field generating coil formed on the substrate. The substrate has a principal surface facing a storage disk and divided into an inner area and an outer area surrounding the inner region. The magnetic head also includes a dielectric layer enclosing the coil and facing the storage disk. The dielectric layer is formed in the inner area of the principal surface of the substrate but not in the outer area. As tilting, the storage disk comes into contact with the dielectric layer, thereby being prevented from bumping into the outer area of the principal surface of the substrate.

Abstract: An information storage medium according to an embodiment of this invention includes a management area for recording management information, and a data area for recording content data. The content data recorded in the data area contains a plurality of object data, each object data contains a plurality of data units, each data unit contains a plurality of packs, each pack contains at least one packet, the packet contains at least one transport stream packet, the management information recorded in the management area contains program chain information which manages the playback order of data contained in the object data, the program chain information contains cell information, and the cell information contains information that specifies an object to be played back.

Abstract: In one embodiment, a storage device includes a controller, an integral storage medium that includes one or more stacks, where each stack includes multiple storage locations that are distributed throughout a portion of the volume of the integral storage medium, and an access mechanism that is configured to access the integral storage medium. The controller is configured to receive a command to write a unit of primary data to a first storage location. The controller is configured to generate a unit of redundant data corresponding to the unit of primary data and to control the access mechanism so that the unit of primary data is written to the first storage location in a first stack and the unit of redundant data is written to a second storage location within the integral storage medium.

Abstract: The present invention relates to a recording apparatus for improving operability of a DVD camcorder that performs recording in a video format. When an instruction for starting recording is given at a time T11 and then an instruction for stopping the recording is given at a time T12, a DVD camcorder is brought into a pause state at the time T12. An address and the like of an optical disk at that time are stored in a recording RAM. When an instruction for resuming recording is given at a time T13, the address stored in the recording RAM is read, and rerecording is started at a position on the optical disk which position corresponds to the address. The present invention is applicable to DVD camcorders.

Abstract: A micro-integrated probe type head and an optical recording system using the same for recording/reading-out high-density optical information in a near field recording (NFR) manner are provided. The provided micro-integrated probe type head and the optical recording system using the same use a concept of a head that records/reproduces the information by focusing a beam to a probe through a wave guide, a microlens, and a micro-mirror, and by detecting a reflected beam. In this case, the probe is formed by a silicon process to have an aperture with a size of tens of nanometers. By driving the head in a disk actuation structure, high-density near-field optical information having a recording size of 50 to 100 nm is recorded/reproduced at a high speed in a manner of possibly using a conventional tracking technology of an optical disk drive (ODD) or a hard disk drive (HDD).

Abstract: An optical pickup tilt control module and a method for controlling a tilt value of an optical pickup to reduce the jitter value of a generated reproducing signal. The optical pickup tilt control module includes a reproducing signal generator, a jitter detector, a tilt controller and a tilt actuator. The reproducing signal generator receives a RF signal generated from the optical pickup and generates an EFM signal. The jitter detector receives the EFM signal and detects a jitter value of the EFM signal. The tilt controller generates optimum tilt control values during a correction stage and outputs a tilt control value according to a track position of reproduction data during an adjusting stage. The tilt actuator controls the tilt of the optical pickup according to the tilt control value.

Abstract: A DPD tracking error generating section generates a DPD tracking error signal from a plurality of sense signals supplied from an optical sensor. A PP tracking error generating section generates a PP tracking error signal from a plurality of sense signals supplied from the optical sensor. The amplitude of each of the DPD tracking error signal and PP tracking error signal is adjusted suitably under the control of a CPU. The suitably adjusted signals are added by an adder, thereby generating a tracking error signal.

Abstract: A data recording and reproducing method for an optical disk data storage system to record data compressed at different data compression rate according to an operator's specification, and to reproduce the recorded data by decompressing. According to the operator's indication, the data is recorded at certain data compression rate in indicated area. The information of the data compression rate and the recorded area is stored as a table of contents (TOC) data. The TOC data is reproduced and stored in a memory after the optical disk is loaded. The recorded data is reproduced by selecting a decoding circuit to decompress the data. The decoding circuit is selected by referring the TOC data to identify data compression rate of the recorded data. Also the TOC data is referred to identify read-in and read-out region of the recorded data. The position of a pick-up when the data recording is started and ended, is recorded as the TOC data to provide random access capability for the data reproduction.

Abstract: A method includes selecting a subset of predictive frequencies from a set of disc drive frequencies consisting essentially of operational driving frequencies in the disc drive and system resonance frequencies in the disc drive. Correlation constants are determined that correlate sound power to mechanical vibration magnitudes at each of the frequencies in the subset of predictive frequencies. The method further includes acquiring mechanical vibration data from the disc drive while operating the disc drive and determining predictive vibration magnitudes at each of the frequencies in the subset of predictive frequencies from the mechanical vibration data. Finally, the method includes determining an estimated acoustic sound power value for the disc drive from the determined correlation constants and the predictive vibration magnitudes. A testing system determines an estimated acoustic sound power value for a subject disc drive from predetermined correlation constants and vibration magnitudes.

Abstract: A recording medium includes first information selected from a plurality of information patterns and second information selected from another plurality of information patterns for the true-false judgement. A true-false judging device performs a statistic analysis when any coincidence is found between the readout combination of the first and second information and registered combination patterns, to identify an inspected recording medium as a forged product based on the result of the statistic analysis.

Abstract: A plurality type of adjustment data groups are stored in a memory for each of a plurality of adjustment items for adjusting a record signal waveform. The adjustment data group for each adjustment item is selected in accordance with identification information preset in accordance with a disk type and a record velocity magnification factor. The selected adjustment data groups are combined to form a record strategy. The record signal waveform is adjusted in accordance with the formed record strategy to record the record signal in an optical disk. It is possible to reduce the amount of adjustment data for the record signal waveform to be stored in the memory.

Abstract: A multisession compatible disk player including: a multisession decision portion (6) that decides whether a disk has plural sessions based on session format information recorded in a lead-in area of a first session on the disk; a disk format decision portion (10) that decides whether the disk is a read-only disk based on disk format information recorded in the lead-in area of the first session on the disk; a disk type decision portion (7) that decides the type of the disk based on the results of decision by the multisession decision portion and the disk format decision portion; and a control portion (9) that controls the playback of the disk based on the result of decision by the disk type decision portion.

Abstract: An optical head device includes a light source for emitting a light beam and a focusing device for focusing the light beam onto a recording medium. An optical path directs the light beam from the light source toward the recording medium. The optical path directs a first portion of the light beam to fall upon the focusing device. A second portion of the light beam does not fall upon the focusing device. A light detector is positioned such that a light receiving face of the light detector is approximately perpendicular to an advancing direction of the second portion of the light beam and detects an amount of light in the second portion of the light beam for control of the power of the light beam emitted from the light source. Thus, APC processing is performed without reducing utilization efficiency of the laser beam of a trunk system.

Abstract: An information recording apparatus varies an output level of laser light according to the length of a segment in which information is to be erased when information recorded on an information recording medium is erased by use of laser light of a preset output level.

Abstract: A write pulse generating apparatus includes a control unit which provides information on an optical recording medium type and information on a recording speed factor, and a control signal generating unit which determines a multi-pulse type which is to be generated in a multi-pulse interval based on the information recording medium type and recording speed factor. The generating unit generates a signal for controlling the light emitting device driving unit to generate a write pulse having the determined multi-pulse type. A control unit sets the level of the write pulse for up to an entire interval of a write mark and/or a write space according to the optical recording medium type and the recording speed factor.

Abstract: Information recording media 101 and 102 usable for either a first recording density D1 or a second recording density D2 each include a user data area 106 in which user data is to be recorded, a first defect management information area 108 in which first defect management information for managing a defect area in the user data area is to be recorded, and a second defect management information area 109 in which second defect management information having an identical content to that of the first defect management information is to be recorded. The first and second defect management information areas 108 and 109 are located such that angles &thgr;1 and &thgr;2 made by start blocks thereof fulfill the relationships of 150°≦&thgr;1≦210° and 150°≦&thgr;2≦210° (&thgr;1: in the case of the first recording density, and &thgr;2: in the case of the second recording density).

Abstract: There is disclosed an information recording medium on which stream information including images or sound and management information of the stream information are digitally recorded, the medium comprising a first recording region in which first management information of the management information for use in common in management of each stream information divided every predetermined data amount can be recorded, and a second recording region in which a reference unit of information obtained by adding second management information of the management information for use in management of divided individual stream information to the divided stream information can be recorded.

Abstract: A locking mechanism for a disk reading device has a body, and an absorber provided on the body for absorbing impact energy. The absorber can be implemented in the form of an elastic material on the body of the locking mechanism, or by providing one or more hollowed regions on the body of the locking mechanism, or by providing resilient members that function to further absorb the impact energy.

Abstract: A disk apparatus has a chucking mechanism including a receiving member and a disk pressing member respectively provided in an upper position and a lower position with respect to a disk tray. One longitudinal end portion of a drive chassis on which the disk pressing member is disposed is attached to a frame via first buffer members. A free end of the drive chassis is joined to a movable member, which is moved up and down as the movable member is guided by a guide hole of a guide plate provided in a position opposed to the free end of the drive chassis, via a second buffer member made of vibration-proof rubber. The movable member is formed of a hollow cylindrical shaft member, and a second buffer member is interposed in a press fitted state between the shaft member and the free end of the drive chassis.

Abstract: A lower inertial compact disk driving device is disclosed. The disk and laser head are static and optical unit device are used as a medium of the laser optical path. Furthermore, the focusing is realized. An optical unit device is used as a medium of the laser beam and a displacing device is used to change the position of the optical unit device. The focusing device has two rigid sliding tracks, one focus coil, and two permanent magnets. The rigid sliding tracks are used as a linkage. The focusing error from the laser beam passing through the optical unit device is converted into a focusing driving voltage which is applied to the focus coil so that a magnetic field is generated. This field is interacted with permanent magnets so that the focus coil moves up and down. Thereby, the rigid sliding tracks move up and down to drive the optical unit device to move.

Abstract: An integrated optical disc label scanner system can comprise a substrate configured for spinning an optical disc, wherein the optical disc has a graphic display on a first surface; an emitting device configured for reflecting energy from the graphic display; a detecting device configured to receive energy sourced from the emitting device and reflected from the graphic display while the optical disc is spinning; and a signal processor configured for converting the energy collected by the detecting device into digitized data. Further, a method of scanning a graphic display from an optical disc can comprise the steps of spinning an optical disc having a graphic display on a first surface; radiating the first surface with emitted energy resulting in graphic display reflected energy; collecting the graphic display reflected energy while the optical disc is spinning; and converting the graphic display reflected energy into digitized data.

Abstract: The record condition extraction system (1) of a dielectric recording medium is intended to obtain an applied voltage and an applied time length to be recorded when recording information in the dielectric recording medium. The record condition extraction system (1) is provided with: an applied voltage setting device (11); an applied time length setting device (12); a record control device (13); an applied voltage/applied time length record device (14); a record device (15); a dot radius measurement device (16); a dot radius record device (17); an optimum dot radius detection device (18); a record condition determination device (19); and an output device (20). The applied voltage setting device (11) and the applied time length setting device (12) set a voltage and a time applied to a probe (31) of the record device (15), respectively.

Abstract: A tilt adjust mechanism for an optical disc drive. The optical disc drive includes a base plate. The tilt adjust mechanism comprises a plurality of mounts, two guide rails, a plurality of pre-compressed springs, and a plurality of screws. Each of the mounts is disposed on the base plate. Each of the guide rails is disposed on the mount at both ends. Each of the pre-compressed springs is disposed in the mount. Each of the screws is disposed on the base plate through the mount and the pre-compressed spring so as to adjust the guide rail.

Abstract: In an optical pickup actuator comprising a movable portion (10) including a lens holder (12) for holding an object lens (11) and a damper base (22) for supporting the movable portion through a plurality of suspension wires (34) extending from both sides thereof to allow the movable portion to shift up and down and right and left, the movable portion (10) is made of a liquid crystal polymer (40) which is material having a nature where a surface layer (41) thereof is harder than the inside (42) thereof on injection molding. The movable portion has a surface shape (a wavelike surface shape) where a surface area thereof is larger than that of a flat surface.

Abstract: The present invention provides a recording and/or reproducing apparatus using a magneto-optical disc (3) as a recording medium, which includes a recording and/or reproducing mechanism (7) for recording and reproducing information signals to and from the magneto-optical disc (3) rotatably housed in a disc cartridge (2), a support base (19) which supports the recording and/or reproducing mechanism (7), and a impact drive mechanism (9) which causes the electromechanical-transduction element (25) to lengthen and shorten corresponding to driving pulses to shift the drive shaft (24) along the shaft direction thereof so as to cause the movable portion (27) to slide along the shaft direction of the drive shaft (24) together with the support base (19), and the recording and/or reproducing mechanism (7) and the impact drive mechanism (9) are arranged within a projection area of the openings (4a), (4b) of the disc cartridge (2) for exposing a part of the magneto-optical disc (3) to the outside from the inner to the oute

Abstract: The present invention is a two-part optical disk with a nested, centrally positioned removable disk in the original configuration the disks comprise two disks removably joined together so as to enable both disks to be readable with a computer disk drive. The two-part optical disk is further configured so as to be separable into independent disks. After separation of the two disks, only data on the formerly nested inner optical disk continues to be accessible by a computer disk drive. Data on the formerly surrounding outer disk is no longer accessible by a computer disk drive The two-part optical disk has large data storage capability but with separation offers all the advantages of the small disk format: convenient storability, portability and support functionality.

Abstract: A data storage medium (1) has an optical information carrier which comprises a polymer film (11) wound in spiral fashion in a plurality of plies (10), through which information can be read from a preselected polymer film ply (10) and, optionally, written to a preselected polymer film ply (10). A varnish layer (12) set up as an adhesion layer is disposed between adjacent polymer film plies (10).

Abstract: The dielectric material is, for example, a ferroelectric single crystal having a uniform thickness, and its one surface is used for a recording and reproducing surface on which a probe for recording and reproducing works. LiTaO3 is used as the dielectric material. The conductive thin film, which is, for example, about 1000 to 2000 Å thick, is placed on a surrounding portion of a recording and reproducing surface, a back surface, and a side surface of the dielectric material. This conductive thin film, to which aluminum is added by a method of deposition, is connected to a common electrode of a recording and reproducing apparatus. The substrate is intended to preserve the dielectric material, which is thin, and it uses silicon or the like in a predetermined thickness, for example. A conductive paste is a material for sticking to the substrate the dielectric material having the conductive thin film thereon, and indium and silver paste are used for it.

Abstract: A peak power suppression apparatus and a peak power suppression method that reduce memory capacity and the amount of calculation while suppressing peak power in an OFDM signal. A frequency shift section (103) applies frequency shift to an OFDM signal generated in an IFFT section (102) in such a way that the frequency of a peak suppression carrier in this OFDM signal becomes 0. A direct current setup section (105) calculates a direct current signal that suppresses peak power in the frequency-shifted OFDM signal. An addition section (106) adds the direct current signal from the direct current setup section (105) to the frequency-shifted OFDM signal. A frequency shift section (111) applies to the OFDM signal to which the direct current signal has been added frequency shift in such a way that the frequency of the peak suppression carrier in this OFDM signal returns.

Abstract: A transmission part produces a copy of a given narrow-band signal so as to obtain a number of same signals according to predetermined orthogonal sequence, and performs respective phase rotations on the thus-obtained signals according to the present invention orthogonal sequence. A reception part performs reverse phase rotation on the reception signals according to the predetermined orthogonal sequence, and then performs mutual addition thereon so as to restore the narrow-band signal.

Abstract: A new and improved approach is described to avoid problems of overload handling for a random access packet transmission in packet switched mobile networks and in particular, to limit the transmit delay of at least some selected data flows even in case of a long-term overload situation. It is suggested to employ on a respective random access packet transmission channel an admission control functionality depending on a request for the adding of a new data flow and/or to employ on the respective random access packet transmission channel a congestion control functionality depending on varying environments.

Abstract: A scheduling apparatus flexibly integrates guaranteed-bandwidth (GB) and best-effort (BE) flows and comprises a combination of a primary weighted-round-robin (WRR) scheduler (PWS) and a secondary WRR scheduler (SWS). The PWS distributes service to the individual GB flows and determines the amount of service that the BE flow aggregate should receive during each frame. The SWS takes care of fairly distributing the service share of the BE aggregate over the individual BE flows. The scheduling apparatus divides the service frame in two subframes. In the first subframe, the PWS fulfills the bandwidth requirements of the GB flows. In the second subframe, the SWS distributes fair service to the BE flows. For each frame, the duration depends on the amount of bandwidth allocated to the GB flows and on the number of GB flows that are backlogged at the beginning of the frame. The amount of bandwidth globally available to BE flows (i.e.

Abstract: A Monitor for the Control of Multimedia Services in Networks A method and system for reducing congestion of real time data traffic on a multimedia communications network having a traffic control mechanism. The method comprises of first extracting from data traffic in the multimedia communications network information regarding congestion of the multimedia communications network. This extraction is performed by a network of monitors. Secondly, congestion is regulated by a central server which receives network information from the monitors and utilizes the network information to analyze congestion status and communicate instructions to the multimedia communications network to reduce congestion.

Abstract: In a communication system for transmitting and receiving communication frames between a plurality of communication terminals and a server, a control frame which is indicative of control information necessary for communication between the communication terminals and the server and whose size is smaller than the size of the communication frame is transferred being included in a preamble portion of each communication frame and when no communication frame to be transmitted exists, the control frame is transferred as an independent frame.

Abstract: A system for selecting routing information from a routing table describing alternative routes between end nodes. The routing table represents a set of minimum cost, deadlock-free routes between end nodes. The selected routing information is included in forwarding tables, and sent to networking devices in the network. The selected routing information is optimized for at least one network performance metric, such as overall network capacity or fault tolerance. Capacity optimization is obtained by selecting from alternative routes stored within the routing table such that the standard deviation of the number of routes flowing over each link in the network is minimized. Fault tolerance optimization is achieved by selecting from the alternative routes stored in the routing table such that the selected route for a given end node pair has a “failover” route with a maximum number of dissimilar links from the selected route.

Abstract: An adjunct processor controls an inter-fabric service link (IFSL) coupled to at least two independent SAN switching networks. The inter-fabric service link is coupled between multiple switching fabrics to allow the attached switching fabrics to be logically managed as a single entity while still being physically independent of each other. The IFSL does not transmit nor receive data being transmitted from a storage device to a host; rather, only management data is transmitted along the IFSL. The IFSL includes an inter-fabric adjunct processor, and a plurality of connections to the attached switching fabrics on which the IFSL communicates with IFSL agents operating on various switching elements within the attached switching fabrics. IFSL agents generate management data corresponding to the particular switching element on which the agent operates. This management data is intermittently transmitted to the IFSL for processing.

Abstract: Techniques to test performance of terminals and access points in CDMA data (e.g., cdma2000) systems. A framework of protocols and messages is provided to support systematic performance testing of terminals and to ensure interface compatibility. The framework comprises a Forward Test Application Protocol (FTAP) for testing forward channels and a Reverse Test Application Protocol (RTAP) for testing reverse channels. Techniques are also provided to (1) test different types of channels (e.g., traffic channels as well as auxiliary channels), (2) test bursty data transmissions, (3) support “persistence” testing (i.e., continued testing over connection and disconnection), (4) force the settings of certain auxiliary channels (e.g., so that the error rate of the channels may be determined), and (5) collect, log, and report various statistics that may be used to derive performance metrics such as throughput and packet error rate.

Abstract: The invention relates to a communication system with at least two communication nodes for the transmission of information via a common transmission medium in a time division multiplex process.

Abstract: An apparatus and method for wireless/wired Bluetooth™ communications interface are described. The method includes detection of a communications configuration of a device as one of a wireless communications interface and a wireless/wired communications interface. Once detected, it is determined whether a wired/wireless communications interface is the communications interface of the device. When such is the case, a data transmission error rate of the device is determined during operation of the device in a wireless communications mode. Next, the device is switched from the wireless communications mode to a wired communications mode when the data transmission error rate caused by wireless radio interference of the device exceeds a pre-determined threshold. As such, the present invention allows Bluetooth™ wireless communications devices to utilize a wired communications mode when transmission error rate exceeds a pre-determined threshold.

Abstract: Novel techniques are disclosed for adjusting a power control setpoint to compensate for imperfect signal detection in a communication channel capable of discontinuous transmission (DTX). The power control setpoint is compensated for false detections by adjusting the power control setpoint by a dynamically determined setpoint back off amount upon detection of a Good frame. The amount of the setpoint back off is a function of the measured signal quality of the detected Good frame and the number of Erasure indications received immediately preceding the Good frame indication.

Abstract: Network service request for a communication line is installed in a network by automating a design phase and a configuration phase for the service and further by automating the recovery from a failure in either of the phases. In the design phase, an optimal route for the communication line to satisfy the required capacity is found, and the network components are provisioned and assigned. If the assigned network components are not available or can not be validated so that the design fails, the components causing the failure are marked, and the operation flow reverts back to retry the design phase without the marked components. After the design phase is successfully completed, the configuration phase begins. In the first part of configuration phase, the circuit design is tested against actual network components. If the test is passed, the actual network is configured according to the circuit design and the circuit is activated.

Abstract: A communication network apparatus and method for routing communication signals from a source device to a receiving device. The apparatus performs only local processing on communication signals to thereby increase the speed of processing the signals. A plurality of the processing nodes are combined into a plurality of sub-networks that comprise the network apparatus. Each processing node of a sub-network need only process address information pertaining to the node's current layer, one layer above it, if any, and one layer below it, if any. Additionally, each processing node has associated communication signal frequencies/wavelengths that identify the processing node as the intended recipient of the communication signal.

Abstract: According to the present invention there are provided a system, method and program storage device for establishing a connection for an endpoint to a scheduled audiovisual conference between a plurality of participants, the plurality of participants connecting to the audiovisual conference from a plurality of endpoints, connections for the plurality of endpoints to the audiovisual conference being maintained by a multipoint control unit, comprising: receiving a request at a conference control server from a participant to connect an endpoint associated with the participant to the scheduled audiovisual conference; obtaining an IP address or a telephone number for the endpoint; writing the IP address or the telephone number for the endpoint to the multipoint control unit; and communicating audiovisual conference data from the multipoint control unit to the endpoint via the IP address or the telephone number, thereby enabling the endpoint to be connected to the audiovisual conference.

Abstract: The transmission of high-speed data traffic in IPDLs at a base station of a cellular communications network is controlled. An IPDL is identified which occurs within a set of time slots of a given channel. The channel may comprise a dedicated time slot channel or a packet-oriented time slot channel. More specifically, the channel may comprise a Dedicated Physical Control Channel or a High Speed Downlink Shared Channel. The information within a time slot of the set is shifted. In accordance with one aspect of the invention, the information is shifted to a reduced portion of the time slot of the channel by reducing a spread spectrum factor for the signal carrying the information and increasing the transmission power of the signal. A remaining portion of the time slot spans at least a duration of the identified IPDL. In accordance with another aspect of the invention, the information within the time slot is shifted to another time slot of the channel.

Abstract: The method provides power control in transmitting a downlink signal of frame data in a wireless network. Each frame is composed of timeslots, with each timeslot being further composed of quarter symbols. The method includes mapping each quarter symbol to an offset within a frame attenuation buffer, and computing a template for the frame, each step being performed only once. The template is used for filling the attenuation buffer with attenuation values to attenuate the transmit power for the downlink signal. Attenuation values are provided for each quarter symbol in a frame, although a computation is not required for each quarter symbol. The attenuation values are grouped in blocks that are recursively copied into the frame attenuation buffer based on the template. The contents of a filled attenuation buffer are output for use in attenuating the transmit power of the frame.

Abstract: A novel protocol for an ad-hoc, peer-to-peer radio network that provides collision-free channel access with an emphasis on improving geographic reuse of the frequency spectrum. The protocol of the invention is executed on the reservation or control channel, and provides a method for allocating data transactions on the data channels. The system of the invention utilizes multiple parallel data channels that are coordinated by a single reservation channel. The transceiver of the system employs two modems to solve the channel reliability issues with multiple channel designs, where one is dedicated as a receive-only modem for gathering channel usage information on the reservation channel. High quality voice, video and data may be transmitted. The reservation channel implements a time division multiple access algorithm with dynamic slot allocation. In a distributed manner, nodes determine geographic reuse of slots based on channel quality extracted from the modem.

Abstract: A pilot searcher for CDMA and GPS signals. In one aspect, the searcher is operated in conjunction with a sample buffer in a “real-time” or “off-line” mode. The writing/reading of samples to/from the buffer may be performed in a TDM manner via a common port, and samples may be decimated and packed prior to storing in the buffer. In another aspect, the overall search for pilots is partitioned into a number of tasks, with each task corresponding to a search over a given sample segment and based on a particular set of parameter values. The tasks may be stored in a queue and performed one at a time based on their order in the queue. Prior to performing a new task, the parameter values for that task is downloaded to a set of configuration registers. The parameters may be ordered and linked such that only new values are downloaded.

Abstract: An arrangement for cancelling interference from a received signal, comprising: a first radio system and a second radio system employing a time slot structure in data transmission and operating on at least partly the same geographical area as the first radio system. A receiver of the first radio system is configured to control the cancellation of interference from the received signal on the basis of the timing employed in the time slot structure of the second radio system.