43results about How to "Invention is limited" patented technology

A method (600, 700) and apparatus (800) are described for selecting a Push to Video (PTV) service mode (303) allowing transmission of a video information stream (102) and a corresponding audio information stream (103) from an originating wireless communication unit (110) having floor control to a wireless target communication unit (120). Depending on a camera (420) setting, a desired PTV service mode is invoked when a PTV call is initiated by activating a PTV function.

A WLAN (108) includes a first access point (104) for providing wireless service within a first coverage area, a second access point (106) for providing wireless service within a second coverage area and programmed to transmit probe responses, and a wireless communications unit (102) located within the first coverage area and operating on the wireless service of the first access point (104). The communications unit (102) is programmed to monitor, or passively probe, for the probe responses, or is instructed by the first access point (104) on when to monitor for the probe responses, transmitted by the second access point (106). By executing such passive probing, the communications unit (102) may make handover decisions for switching between the wireless service of the first access point (104) to the wireless service of the second access point (106) based on access point data included in the probe responses.

A system and method for call origination by an application server in an internet protocol multimedia core network subsystem includes a first step of providing a public user identity for a user. A next step includes storing a service parameter in a service profile of the user, the service parameter indicating whether to allow/disallow the application server to initiate call requests on behalf of the public user identity. If the service parameter allows the application server to initiate call requests, the system unblocks calls originated by the application server on behalf of the user. If the service parameter disallows the application server to initiate call requests, the system blocks calls originated by the application server on behalf of the user.

A method (600,700) and apparatus (800) are arranged and operate for facilitating call routing between sites in an enterprise connected by a private IP network (130). A range of identifiers (220-223) served by IP PBXs (120-123) in the enterprise may be registered with a SIP registrar (212) of an inter-site router (210). Call requests to a communication unit (350) outside the home site are routed to the SIP registrar. A site identifier associated with the destination IP PBX allows the call to be completed by the SIP Proxy or the IP PBX where the call was received. When no private IP network is available, a roaming CU registers with a cellular proxy in the visited network. Calls are routed by when an HLR (340) associated with the CU obtains the roaming number from the cellular proxy (330) in the visited site. The MSC completes the call to the visited IP PBX using the roaming number and a local SIP registrar 440 forwards the call to the CU.

A communication device (101) includes a display (103) screen for displaying images to a user; an image input (105) for detecting and capturing a series of images, including a prior image and subsequent images; and a processor (107). The processor (107) is configured to facilitate receiving, from the image input (105), the series of images; to facilitate displaying images received from a receiver (111) on the display (103) screen; and to facilitate determining whether the subsequent images have changed in a pre-determined manner from the prior images. A window can be provided on the display, for example to display the series of images from the image input (105). The presence or absence of the window is controlled by a determination that the subsequent images have changed in the pre-determined manner from prior images. When the images are changed, the window is deployed on the display, and when the images are stable, the window is removed from the display.

A wireless receiver 300 and corresponding method to detect a message identifier or preamble that has been generated and provided by a transmitter 200 uses FFTs to estimate frequency and time offset. The wireless receiver 300 scans, asynchronously and sequentially during a wakeup time, a plurality of predetermined frequencies for the message identifier or specialized preamble. A plurality of received sample sequences are collected, one received sample sequence collected at each of the plurality of predetermined frequencies. A correlation between data corresponding to the preamble and data corresponding to a received sample sequence is compared to a threshold value to determine when the preamble has been detected. The wireless receiver 300 is wakened from a low power mode when the preamble is detected.

A controller (103a, 103b) provides dynamic capacity, for use in connection with a communication network (101). A processor of the controller (103a, 103b) that can be utilized in the communication network can be configured to facilitate determining whether a current load level is below a predetermined low usage, and responsive thereto, adjusts a bearer configuration to allow higher throughput per user. Further, the processor (103a, 103b) can be configured to facilitate determining whether the current load level exceeds a predetermined high usage, and responsive thereto, adjusting the bearer configuration to allow lower throughput per user.

A system and method are for monitoring control signals provided to a medical apparatus based upon tactile feedback from the apparatus. The system and method employ a monitoring signal indicative of a parameter relating to the apparatus or to a condition of a patient associated with the apparatus. The system includes a first feedback device in communication with the apparatus and arranged to provide tactile feedback to a first individual based upon the monitoring signal; a first controller actuatable by the first individual to provide a control signal to the apparatus for carrying a control action in the apparatus; a second feedback device in communication with the apparatus and arranged to provide tactile feedback to a second individual based upon the monitoring signal from the apparatus; and a second controller in communication with the first controller such that the control signal given by the first individual to the first controller is reflected in the second controller and communicated to the second individual. The first feedback device, first controller, second feedback device and second controller are in communication with the apparatus such that the first and second individuals can be distant from the apparatus and patient and move about the apparatus and patient to a desired location.

A polar modulation power amplifier circuit includes a control circuit (101) to determine and provide a load selection signal (127), wherein the load selection signal (127) is determined responsive to a requested power signal (119). A power amplifier (113) is responsive to a power control signal (141), for amplifying an RF signal (139) to produce an amplified signal (145), having an output power level. A variable impedance matching circuit (117) is responsive to the load selection signal (127), to adjust a relationship between the control level and the output power level, to produce a range-adjusted amplified signal (147).

A method of and apparatus for adapting an antenna array for closed loop transmit diversity, the method comprising: receiving an adapting signal corresponding to an antenna array weighting pattern for a time period; demodulating the adapting signal to provide a symbol for the time period; determining a preferred symbol from the symbol for the time period and a previous symbol for a previous time period; and transmitting with an antenna array weighting pattern corresponding to the preferred symbol.

A system includes a drone for monitoring a second vehicle moving along a route. The drone includes a processing unit, a speed control unit, a sensor system, and a communication module. The processing unit determines a braking distance for the second vehicle in response to a current speed of the second vehicle and determines a leading distance for the drone based on the braking distance. The speed control unit adjusts a guide speed and a position of the unmanned vehicle such that the drone travels ahead of the second vehicle by at least the leading distance. The sensor system detects a hazardous condition along the route ahead of the unmanned vehicle, and the communication module enables a wireless communication link between the drone and the second vehicle for notifying the second vehicle of the hazardous condition.

A circuit (100) is provided for notching an incoming wireless signal. The circuit comprises: a notching mechanism (110) for receiving an incoming signal and generating a notched signal having reduced power at the notch frequency (320), the notch frequency being adjustable in response to a notching control signal; a signal parameter detector (165, 170, 175, 180, 185) for detecting a signal parameter of the notched signal (325); a controller (155) for receiving the signal parameter and for generating the notching control signal (315), the controller being configured to vary the signal parameter within a notching control signal range (340); and a memory (160) for storing the signal parameter and the notching control signal received from the controller in a notching database (330). The controller is configured to analyze the notching database to determine an optimal notching control signal to achieve a desired level of signal performance (345).

A channel estimator (150) is provided that comprises: an extension circuit (410) configured to receive a pilot signal (510), and add front and back extension signals (620, 630) to a front and back of the pilot signal, respectively, creating a first signal (610), the front and back extension signals being extension of a first and last symbol, respectively, in the pilot signal; an IDFT circuit (420) configured to perform an IDFT function on the first signal, generating a second signal (710); a signal processing element (430, 440, 470, 480) configured to perform one or more operations on the second signal, generating a third signal (910); a DFT circuit (450) configured to perform a DFT function on the third signal, generating a fourth signal (1010); and a reduction circuit configured to cut off front and back ends of the fourth signal, generating a channel estimation signal (1110).

A presence agent (101) receives a message with a request for a status of one or more entities. The presence agent (101) determines the status of the entities, and transmits a message with the status of the entities. Transmitting the message includes initiating a connection to a communication device (107). A watcher (103) monitors the status of the entities, and provides updated information regarding the status to the users. The watcher (103) receives a request for a status of entities, determines the status of the entities, and transmits, in response to receipt of the request, a response indicating the status. A communication device (107) transmits a message having a request for status of entities. The communication device receives, from a connection initiated by a communication network (105), a message with a status of the entities, and processes the status of the entities, in response thereto.

A communication unit is provided having a transmitter and a processor (103). The processor (103) receives information (105) representative of a configuration of physical channels (107). The processor (103) determines a scaling factor responsive to the information (105) and facilitates scaling a signal (109, 111) provided by a combination of the channels utilizing the scaling factor. The scaled signal (109, 111) is provided to the transmitter.