Abstract: An improved SCSI controller provides a logical connection between a pluray of host processors using a single SCSI initiator. The controller contains removable host adapters for connection to any type of host processor interface. When a host processor requests status information of a target device, that status information is passed to the requesting processor and subsequently stored in the controller and made available to all other host processors. The advantage to such a controller is the expanded number of host processor connections to a single SCSI initiator whereby each host processor can independently and logically connect through the controller and SCSI initiator to a target without clearing target status information for other host processors. The invention is particularly advantageous when adapted to function in a local area network (LAN) arrangement where a significant number of host processors are requesting data from one mass storage device.

Abstract: An improved method of having an SCSI controller provide a logical connect between a plurality of host processors using a single SCSI initiator. The controller contains removable host adapters for connection to any type of host processor interface. When a host processor requests status information of a target device, that status information is passed to the requesting processor and subsequently stored in the controller and made available to all other host processors. The advantage to such a controller is the expanded number of host processor connections to a single SCSI initiator whereby each host processor can independently and logically connect through the controller and SCSI initiator to a target without clearing target status information for other host processors. The invention is particularly advantageous when adapted to function in a local area network (LAN) arrangement where a significant number of host processors are requesting data from one mass storage device.

Abstract: An improved SCSI controller provides a logical connection between a pluray of host processors using a single SCSI initiator. The controller contains removable host adapters for connection to any type of host processor interface. When a host processor requests status information of a target device, that status information is passed to the requesting processor and subsequently stored in the controller and made available to all other host processors. In addition, a fault tolerant performance monitoring algorithm, executing within the controller, is scheduled to non-intrusively and periodically check the status of each SCSI target device and to store that status information for all host processors. The advantage to such a controller is that by using a single SCSI initiator, each host processor can independently and logically connect through the controller and SCSI initiator to a target without clearing target status information for other host processors.

Abstract: An SCSI controller adapted as a network file server provides a virtual coction between a plurality of host processors and a single SCSI initiator. The controller contains a removable host adapter for connection to any type of network interface. When a host processor issues a command packet and requests status information of a target device, that status information is passed to the requesting processor and subsequently stored in the controller and made available to all other host processors on the network. A fault tolerant performance monitoring algorithm, executing within the controller, is scheduled to non-intrusively and periodically check the status of each SCSI target device and to store that status information for all host processors.

Abstract: Apparatus for controlling cooling fans for variable electrical loads. A controller monitors cooling fan output, ambient temperature and the electrical load. The controller then matches the fan speed and resulting cooling to the existing electrical load and ambient temperature. As a consequence, fan speed is maintained at a minimum necessary to sustain appropriate cooling levels. This minimizes the generation of structureborne and airflow noise.

Abstract: An apparatus is disclosed having a controller at each of several network es, each controller monitoring cooling fan output, ambient temperature and electrical load. Each controller includes a network interface and microcontroller for responding to requests for the values of monitored parameters. In response to such a request, the controller processes a procedure that retrieves a requested monitored parameter value and that transfers that value onto the network.

Abstract: A method for controlling cooling fans for variable electrical loads. A cooller monitors cooling fan output, ambient temperature and the electrical load. The controller then matches the fan speed and resulting cooling to the existing electrical load and ambient temperature. As a consequence, fan speed is maintained at a minimum necessary to sustain appropriate cooling levels. This minimizes the generation of structureborne and airflow noise.

Abstract: A method for monitoring various parameters for equipment at network sites. controller at each site monitors cooling fan output, ambient temperature and an electrical load. The controller includes a network interface and microcontroller for responding to requests for the values of monitored parameters. In response to such a request, the controller processes a procedure that retrieves a requested monitored parameter value and that transfers that value onto the network.

Abstract: An improved method of having an SCSI controller provide a logical connect between a plurality of host processors using a single SCSI initiator. The controller contains removable host adapters for connection to any type of host processor interface. When a host processor requests status information of a target device, that status information is passed to the requesting processor and subsequently stored in the controller and made available to all other host processors. In addition, a fault tolerant performance monitoring algorithm, executing within the controller, is scheduled to non-intrusively and periodically check the status of each SCSI target device and to store that status information for all host processors. The advantage to such a controller is that by using only a single SCSI initiator, each host processor can independently and logically connect through the controller and SCSI initiator to a target without clearing target status information for other host processors.

Abstract: An SCSI controller adapted as a network file server provides a virtual coction between a plurality of host processors and a single SCSI initiator. The controller contains a removable host adapter for connection to any type of network interface. When a host processor issues a command packet and requests status information of a target device, that status information is passed to the requesting processor and subsequently stored in the controller and made available to all other host processors on the network. A fault tolerant performance monitoring algorithm, executing within the controller, is scheduled to non-intrusively and periodically check the status of each SCSI target device and to store that status information for all host processors.

Abstract: An improved computer mouse allows a computer operator to interactively adjust horizontal and vertical resolution by depressing switches on the mouse frame and moving the mouse frame on a flat surface. Optional indicators on the mouse frame indicate a plurality of resolution settings. An internal sounding device within the mouse assembly provides audio feedback as the resolution is changed. The invention connects to a standard Personal Computer (PC) through a serial RS-232 port or a standard parallel "bus mouse" interface and contains provisions for vendor unique interfaces. Keyboard entry is not required in order to adjust the resolution setting of the mouse. Memory resident dynamic tracking programs are not needed to modify the resolution of the mouse, thereby freeing up computer memory for other applications.

Abstract: A sensing system connects to a switch display encoder apparatus and monitors the rotational speed of a plurality of encoders in all directions independently and responds to rate-aided commands issued by the user or by a Central Processing Unit (CPU). As the encoders spin in any direction, a quadrature output signal from each encoder is sent to the sensing system which processes the raw quadrature data and transmits, via an output controller, a rate-aided signal to the CPU. The CPU can interactively issue commands to the system which changes the speed thresholds and rate-aided output signals. The user can preset and interactively change speed thresholds and rate-aided outputs via switches mounted on the apparatus. Parameters settings are transmitted to the sensing system and to an external CPU. The apparatus contains numeric displays that indicate switch selected or CPU instructed speed thresholds, rate-aid multipliers, or rate-aid dividers.

Abstract: A sensing system connects to a switch display encoder apparatus and monitors the rotational speed of a plurality of encoders in all directions independently and responds to rate-aided commands issued to the user or by a Central Processing Unit (CPU). As the encoders spin in any direction, a quadrature output signal is sent from each encoder to the sensing system which processes the raw quadrature data and transmits, via an output controller, a rate-aided signal to the CPU. The CPU can interactively issue commands to the system which changes the speed thresholds and rate-aided speed threshholds and rate-aided outputs via switches mounted on the apparatus. Parameter settings are transmitted to the sensing system and to the external CPU. The apparatus contains numeric displays that indicate switch selected or CPU instructed speed thresholds, rate-aid multipliers, or rate-aid dividers.

Abstract: A multiline modem system provides to a computer connection a plurality of lephone lines for transmitting and receiving digital computer data at throughput rates that exceed those of single line modem systems. The system determines the number of available telephone lines, sequences through a series of telephone re-dials, and acknowledges all connections. When the last connection is verified, the system is on-line and data transfer can begin. The system described uses state-of-the-art components and meets FCC Part 68 requirements for connection to the switched telephone network.

Abstract: A multiline modem system provides to a computer connection a plurality of lephone lines for transmitting and receiving digital computer data at throughput rates that exceed those of single line modem systems. The system determines the number of available telephone lines, sequences through a series of telephone re-dials, and acknowledges all connections. When the last connection is verified, the system is on-line and data transfer can begin. The system described uses state-of-the-art components and meets FCC Part 68 requirements for connection to the switched telephone network.

Abstract: A telephone access system provides to the caller connection to an output upon receipt of a coded signal from the caller. Units are connected in sequence for receipt of each member of the coded signal. The caller has a predetermined period of time to enter the correct code or the system automatically hangs up. The system described uses TOUCH-TONE and all components are state of the art.

Abstract: A dynamic channel selection system interfaces to a plurality of communican paths, senses the number of available paths, and generates a digital word representative of that number. The system, which is adapted to be contained within a modem or similar data communications equipment, transmits this digital word using the first available communication path to a receiving modem or similar equipment. The receiving modem, which contains another channel selection system, senses its number of available communication paths, generates a digital word representative of that number, and subsequently transmits this digital word to the first system. Both systems compare the number of available communication paths at both locations and adjust these numbers so that the maximum number of communication paths can be utilized.