Abstract: A software implementation of a modem, particularly designed to execute on a general purpose host processor, controlled by a non-real-time, multi-tasking operating system (OS), such as the Windows 95 OS. The software modem is scaleable and portable. In this fashion, communication protocols (particularly datapumps) may be easily added to, or removed from, the system, and the modem may be easily adapted for use on other types of processors and operating systems. The controller and datapump portions execute as a plurality of interacting subsystems, each of which can execute at at least one of several priority levels. A HRT level routine is responsible for handling an ASIC that buffers transmit and receive samples destined to and received from the phone lines. A SRT level task includes logic that needs time functionality, but which is not time-critical like the HRT logic. BRT routines execute in an event-driven basis and are used for many controller functions.

Abstract: An adaptive weighting handwriting recognition device and method compares information representing handwritten input with stored recognition data at least some of which has a weighting value associated therewith. The weighting values remains fixed during comparison of the handwritten input and stored recognition data and provide candidate recognition information, which can be further processed with user editing instructions to modify and correct the candidate recognition information. During user editing, the weighting values of the stored recognition data associated with the corrected candidate recognition information modified are varied to enhance the likelihood of correct future handwriting recognition.

Abstract: The present invention provides a user with the option of editing handwritten input such that the user may elect to join or combine one or more discrete continuous segments, or blocks of ink, to form a single discrete continuous segment. The joined segments are then presented as a single discrete segment and analyzed as a single discrete segment by the method of machine recognition of handwritten input being employed by a device that functions to receive handwritten input.

Abstract: A cable telephony system (100) including a plurality of subscriber units (104) connected to a head-end (102) by a cable distribution network (106) in which upstream and downstream data transmissions are sent between subscribers (104) and head-end (102). Both shared and unshared connections are supported within cable telephony system (100). Transmission between a subscriber (104) and head-end (102) may involve both a shared and unshared connection in which unshared connections are employed to provide a higher quality of service when the shared connection is unable to do so.

Abstract: An apparatus and method adaptable to desired offsets for determining an undesired offset of a signal having a maximum and a minimum state that includes: providing a peak and trough estimate of, respectively, the maximum and minimum amplitude state; averaging such estimates to provide a reference level that is proportional to the undesired offset; and controlling the peak and trough estimates whenever a comparison of the signal and the reference level is, respectively, indicative of the maximum and minimum amplitude states to thus assure adaptation to the desired offset of the signal.

Abstract: A tonal sound recognizer determines tones in a tonal language without the use of voicing recognizers or peak picking rules. The tonal sound recognizer computes feature vectors for a number of segments of a sampled tonal sound signal in a feature vector computing device, compares the feature vectors of a first of the segments with the feature vectors of another segment in a cross-correlator to determine a trend of a movement of a tone of the sampled tonal sound signal, and uses the trend as an input to a word recognizer to determine a word or part of a word of the sampled tonal sound signal.

Abstract: A shared spectrum communications unit and system provides communications without interfering with incumbent point-to-point receivers. This system includes a transmitter (e.g., of a PCS device) and a geographical location device which is operatively associated with the transmitter. The geographical locating device determines the position of the transmitter, and provides position information to a frequency authorization device. Geographical information pertaining to the PCS device is compared with the locations of the incumbent point-to-point receivers, using a database of the frequency authorization device including the locations of the point-to-point receivers, and a frequency allocation/authorization is generated to the PCS device when the PCS device is located outside of a predetermined range associated with local point-to-point receivers. An authorized frequency is stored and employed by the frequency authorization device for control of the operating frequency of the PCS device.