Abstract: A user-removable optical data storage system is provided. A rotatable first-surface medium is enveloped in a cartridge. The cartridge provides relatively large data capacity such as about 0.25 Gbytes or more despite a relatively small size such as about 35 mm×35 mm×3 mm. Preferably the cartridge substantially seals the data surfaces of the medium when the cartridge is withdrawn from a drive and at least a portion of one surface is automatically exposed to the objective of an optics arm when said cartridge is inserted in the drive. Tracking involves rotating an optic arm about an axis parallel to the disk rotation axis. Focus can involve pivoting the arm about an axis parallel to the disk surface.

Abstract: A user-removable optical data storage system is provided. A rotatable first-surface medium is enveloped in a cartridge. The cartridge provides relatively large data capacity such as about 0.25 Gbytes or more despite a relatively small size such as about 35 mm×35 mm×3 mm. Preferably the cartridge substantially seals the data surfaces of the medium when the cartridge is withdrawn from a drive and at least a portion of one surface is automatically exposed to the objective of an optics arm when said cartridge is inserted in the drive. Tracking involves rotating an optic arm about an axis parallel to the disk rotation axis. Focus can involve pivoting the arm about an axis parallel to the disk surface.

Abstract: A communications system is provided for sending and receiving information relative to a mobile unit in which a number of network channels are available through which the information can be transferred. The system includes a link selector for selecting an acceptable network channel using application requirements for the particular channel, together with channel operating parameter values. When such a channel does not become available, the link selector is also involved with recovery procedures. These network channel operating parameters include bandwidth, information transfer costs and information transfer packet loss, latency and jitter. Weighting vectors are also utilized with such channel operating parameters in determining suitability values associated with the available network channels. The link selector communicates with a link scheduler that has responsibility for determining when information should be transferred including when there should be a change in the timing of the information transfer.

Abstract: A cellular telephone is interconnected to a host assembly via a cable. The cable contains both appropriate interdisciplinary connections for attachment to the telephone at one end and to the host assembly at the other end via a universal connector. The identity of the particular cellular telephone can be provided to the host assembly by a number of different protocols including the downloading of function-related parameters to the host assembly that are unique to the particular telephone. Accordingly the host assembly can function with any one of a variety of cellular telephones having differently configured cable connections. In one embodiment, a pocket adapter holds the cellular telephone and includes the universal connector.

Abstract: Communication of information including data between a remote computer and a vehicle is managed and facilitated using an apparatus compatible with standardized network communication links. In one embodiment, the standardized network communication links include the Internet and a controller area network used in vehicles. The apparatus preferably includes a controller contained in the vehicle. The controller is comprised of a number of hardware and software elements including a processor. A TCP/IP stack is part of the controller for providing the necessary control in checking for communicating information, such as requests and data, over the Internet. A web server communicates with the TCP/IP stack for servicing information related requests in http format including obtaining or sending information in operative communication with the TCP/IP stack.

Abstract: A cellular telephone is interconnected to a host assembly via a cable. The cable contains both appropriate interdisciplinary connections for attachment to the telephone at one end and to the host assembly at the other end via a universal connector. The identity of the particular cellular telephone can be provided to the host assembly by a number of different protocols including the downloading of function-related parameters to the host assembly that are unique to the particular telephone. Accordingly the host assembly can function with any one of a variety of cellular telephones having differently configured cable connections. In one embodiment, a pocket adapter holds the cellular telephone and includes the universal connector.

Abstract: A cellular telephone is interconnected to a control unit via a cable. The cable contains both appropriate interdisciplinary connections for attachment to the telephone at one end and to the control unit at the other end via a universal connector. At least one contact of the universal connector is capable of producing a signal coded to identify the type of cellular telephone attached to the connector at the other end. A decoder at the control unit identifies the type of phone as by table look-up and establishes appropriate interfacing operational functions at its universal connector to properly operate with the telephone. Accordingly, the control unit can function with any of a wide variety of cellular telephones having differently configured cable connections and cable connector disciplines of contact assignments.

Abstract: A cellular telephone is interconnected to a control unit via a cable. The cable contains both appropriate interdisciplinary connections for attachment to the telephone at one end and to the control unit at the other end via a universal connector. At least one contact of the universal connector is capable of producing a signal coded to identify the type of cellular telephone attached to the connector at the other end. A decoder at the control unit identifies the type of phone as by table look-up and establishes appropriate interfacing operational functions at its universal connector to properly operate with the telephone. Accordingly the control unit can function with any of a wide variety of cellular telephones having differently configured cable connections and cable connector disciplines of contact assignments.

Abstract: A magnetic record reproducing system preamplifier includes an inductive choke in the emitter circuit of a first stage transistor amplifier whereby to provide a frequency responsive variable input impedance whereby to maintain a proper impedance relationship between the inductive transducer and the input impedance of the first stage amplifier. A second stage transistor amplifier is connected to the output of the first stage amplifier in cascode relationship, reducing the effective voltage gain of the first stage to substantially zero. The choke in the input circuit of the first stage amplifier acts as a degenerative feedback at higher frequencies, effectively reducing the bias current through the first stage transistor. The base emitter capacitance of the first stage transistor tends to resonate with the inductance of the transducer. The effective degenerative feedback at that first stage transistor tends to push that resonant frequency beyond the desired or useful frequency band of the system.

Abstract: A holographic recording is made on a tone wheel which is arranged to be driven by a capstan motor and capstan assembly. The holographic recording is a series of radial holograms on the tone wheel which recording is matched to the mechanical system driving the tone wheel by incorporating mechanical drive errors in the holographic recordings.

Abstract: A holographic recording is made on a tone wheel which is arranged to be driven by a capstan motor and capstan assembly. The holographic recording is a series of radial holograms on the tone wheel which recording is matched to the mechanical system driving the tone wheel by incorporating mechanical drive errors in the holographic recordings. The holographic recording on the tone wheel is read during subsequent operation of the motor/capstan/tone wheel assembly by a laser playback system to provide control signals for a motor energizing means to correct intrinsic drive system errors in a "sync-off-tach" type tape drive system.

Abstract: A magnetic recording head driving circuit includes a single operational differential amplifier which mixes the bias signals with the data signals, the signal level of the two signals being separately controlled. The output of the amplifier is applied to the recording head through an impedance matching network. The impedance matching network converts the relatively high inductive impedance of the head to a substantially and effectively resistive load, matching the output impedance of the amplifier at the frequency of the bias signal.

Abstract: In a holographic memory or a holographic recording system, one dimensional Fourier transform holograms are recorded on a moving memory medium.