Abstract: A barcode symbol having an encoded symbology is provided with color or shades of gray to add additional information at the time of printing. The color or shades of gray provides the current barcode symbology with a third dimension of information. The color or shades of gray can encode information over a specific one-dimensional or two-dimensional symbology. White spaces can be replaced with colors or shades of gray to add coded information to the standard one-dimensional and two-dimensional codes. The number of colors and how they are distributed or arranged can provide the basic backbone of information. A barcode reader that can detect the different color spectrums, can be employed to decode the information. Furthermore, color is not limited to white spaces, but can be implemented into black spaces. Additionally, colored background information can provide additional information to the current symbology.

Abstract: A system and method is provided that provides a mobile communication device with the ability to quickly reestablish a communication session with another after the communication device is awaken from a sleep or idle mode. The mobile communication device is provided with a first power system for powering a central operating system and a second power system for powering a communication system. A mobile communication device establishes a communication session with another communication device by establishing a connection and establishing a communication session. During an idle period, the communication session in a stack will be stored in memory. The first power system and the central operating system will then enter a low power or sleep mode, while second power system and the communication system can maintain a communication connection with the other device. Upon reestablishing communications, the mobile communication device will wake up the first power supply and the central operating system.

Abstract: A low voltage battery pack monitoring circuit for a battery powered electronic device is disclosed. The circuit utilizes low battery and power failure set point voltages and first and second comparison circuits to compare voltage across the device battery pack to the set point voltages. If the battery pack output voltage falls below the low battery pack set point voltages, the first comparison circuit sends a signal to a microprocessor causing a low battery indicator light to be actuated. If the battery pack output voltage continues to decrease below the power failure set point voltage, the second comparison circuit includes a comparator which changes output state and turns off selected electronic systems of the device and the device enters a suspend mode. The low battery pack set point voltage value and the power failure set point voltage value are determined using an empirical look up table.