Abstract: A method and apparatus for configuring an electronics device. The method includes receiving, by the electronics device, a request for a command to perform a predetermined operation by the electronics device and sending the command in response to receiving the request. The electronics device then receives a signature based upon the command, whereupon the electronics device verifies the signature by the electronics device and, following an affirmative verification, executes the command for performing the predetermined operation. In this way, the electronics device may be reconfigured remotely without knowledge of the particular command for performing the predetermined operation by the electronics device.

Abstract: A method and apparatus for configuring an electronics device. The method includes receiving, by the electronics device, a request for a command to perform a predetermined operation by the electronics device and sending the command in response to receiving the request. The electronics device then receives a signature based upon the command, whereupon the electronics device verifies the signature by the electronics device and, following an affirmative verification, executes the command for performing the predetermined operation. In this way, the electronics device may be reconfigured remotely without knowledge of the particular command for performing the predetermined operation by the electronics device.

Abstract: A system and method for transmitting multiple data streams from a host to a printing device. Data streams are arranged according to color, segmented and compressed, if desired. If compression is used, each segment may compressed with a different compression algorithm. Each segment contains a header describing the size of the data in the segment. The host transmits a print header containing information and instructions necessary for the print device to reassemble and process the data segments to produce a printed item.

Abstract: The invention provides a method for aligning multiple color ink jet printheads to provide ink droplet placement within about {fraction (1/600)} inch of desired droplet location. The method includes providing an ink jet printer containing a printhead carriage for retaining a black ink printhead and a multi-color ink printhead thereon. The black ink printhead contains a black ink pen and the color ink printhead preferably contains at least two pens for providing droplets of ink on a print media. A color pen is selected to provide reference vertical and horizontal alignment patterns rather than using a black pen as the reference color. This enables a smaller error for alignment than provided with conventional alignment patterns.

Abstract: The invention provides a printing apparatus for printing an image having a spatial resolution onto a print medium. The printing apparatus includes a printhead having a plurality of printing elements for ejecting ink droplets having a mass onto the print medium, and a temperature sensor for sensing a temperature of the printhead, producing a temperature signal. The apparatus also includes a media sensor for determining what type of print medium is loaded in the printer and producing a print medium signal based on the type of print medium installed in the printer. A plurality of heating devices are located adjacent the printhead for adjusting the temperature the printhead.

Abstract: A printhead temperature monitoring system includes a processor having a top priority interrupt input, a normal priority interrupt input, and at least one input for receiving temperature related signals. The processor is programmed or otherwise operable to calculate a printhead temperature based at least in part upon temperature related signals read on the input. A single timer circuit provides interrupt signals to the interrupt inputs of the processor. An interrupt control circuit is connected between the single timer circuit and the processor for selectively controlling application of timer circuit interrupt signals to the top priority interrupt of the processor and the normal priority interrupt of the processor.

Abstract: A computer system having suspend and resume capabilities that uses the hard drive to extend the amount of nonvolatile memory (NVRAM) in the system. As the system is powered down, the system processor saves to the hard drive system parameters such as: resource allocation data determined pursuant to the Plug & Play specification, total power on hours for the system, the number of power on cycles for the system, error codes, and the dates the errors occurred. The saving to hard drive begins responsive to circuitry monitoring the primary (AC input) portion of the power supply indicating that the power supply input is out of tolerance, as would occur when the user actuates the power switch to turn the system off or during a blackout. During the period of reliable processing time remaining, the above system parameters are written to the hard file. The system parameters are also saved to the hard file during the controlled power off that occurs as the system state is suspended.

Abstract: Described is a personal computer system which includes a central processing unit (CPU) and power management circuitry (PMC) in circuit communication with the CPU. A power supply is in circuit communication with the CPU and the PMC and includes circuitry for selectively providing system power to the computer system and auxiliary power to the PMC (1) from an external source or (2) from an internal source. When the system is in a normal operating state and the external source stops providing power at a predetermined level (e.g., brownout or blackout) to the power supply, the power supply is operative to generate a control signal to the PMC and switch to its internal power source. The power management circuitry is characterized in that while in the normal operating state, responsive to the power supply activating the control signal, the PMC causes the computer system to change to the suspend state wherein the entire state of the system is safely saved to a non-volatile storage device.

Abstract: A computer system having suspend and resume capabilities using multiple suspend timers. The multiple suspend timers execute such that the computer system suspends after a longer period of time of user inactivity when the system is powered up in an attended mode and suspends after a shorter period of time of inactivity when the system is powered up in an unattended mode. If the system awakens in an unattended mode and user activity is subsequently detected, the system changes to suspend after the longer period of time of user inactivity. The multiple timers are implemented either by a single timer restarted to two different values or by two independent timers having different expiration values.

Abstract: Described is a personal computer system which includes a central processing unit (CPU) and power management circuitry (PMC) in circuit communication with the CPU. A switch is coupled to the PMC. A power supply is coupled to the CPU, PMC and the switch and includes circuitry for selectively providing system power to the computer system and auxiliary power to the PMC (1) from an external source or (2) from an internal source. When the system is in a normal operating state and the external source stops providing power at a predetermined level (e.g., blackout or brownout) to the power supply, the power supply is operative to change to its internal power and generate a control signal to the switch. The control signal causes the switch to activate a closure event and generate another control signal.