Abstract: A device for measuring a movable object, such as a baseball, football, hockey puck, soccer ball, tennis ball, bowling ball, or a golf ball. Part of the device, called the object unit, is embedded, secured, or attached to the movable object of interest, and consists of an accelerometer network, electronic processor circuit, and a radio transmitter. The other part of the device, called the monitor unit, is held or worn by the user and serves as the user interface for the device. The monitor unit has a radio receiver, a processor, an input keypad, and an output display that shows the various measured motion characteristics of the movable object, such as the distance, time of flight, speed, trajectory height, spin rate, or curve of the movable object, and allows the user to input data to the device.

Abstract: A device for measuring a movable object, such as a baseball, football, hockey puck, soccer ball, tennis ball, bowling ball, or a golf ball. Part of the device, called the object unit, is embedded, secured, or attached to the movable object of interest, and has a spin detection circuit, electronic processor circuit, magnetic field sensor circuit, and a radio transmitter. The other part of the device, called the monitor unit, is held or worn by the user and serves as the user interface for the device. The monitor unit has a radio receiver, a processor, an input keypad, and an output display that shows the various measured motion characteristics of the movable object, such as the time of flight, speed, trajectory height, spin rate, or curve of the movable object, and allows the user to input data to the device.

Abstract: A substantially-universal detector (FIG. 2) of far-end call disconnect-indicative tones detects the foreseeable forms of tone-based signalling of remote-end call disconnect that are likely to be employed anywhere in the world, without reconfiguration or reprogramming for different tones or countries. Implemented in the digital signal processor (DSP 30) of port circuits (14, 20) of switching systems (11) or adjunct processors (12), the detector determines parameters (204) of signals carried by the call to the near end and uses them, along with already-present linear predictive coding (LPC) predictor coefficients (202) and indications of energy (203) in the signals, in a multivariate classification (230) of call progress tones from other tones. When presence of any call progress tones is thus detected substantially without interruption for a predetermined minimum time in the received signals, the call is considered (240) to have been disconnected at the far end.

Abstract: In a circuit module (100) that removably plugs into a backplane carrier (11) that provides both a power connection (713) and a ground connection (714,715) to the module, a circuit (150) in the module responds to power outage on the module by using the presence or absence of the ground connection to determine whether the circuit module has been unplugged from the carrier. Upon restoration of power, a circuit (203) responds to the determination by affecting functionality of the module in one or another manner depending upon whether the module had or had not been unplugged from the carrier.

Abstract: A user-access interface to a voice message service system (16) includes a voice channel (13) and a data channel (14). The data channel enables the user to interact with the voice-mail service system via a video terminal or display-equipped computer (11) and to print message headers on the terminal or display. The user can then visually scan the headers. The user can then listen to the messages or record new messages via the voice channel. The interactive interface between the terminal or computer and the voice message service system over the data channel is provided by a function (30) executing on the terminal or computer and a function (31) executing on the voice-message service system.