摘要:
A portable electronic device is disclosed. The portable electronic device includes a wireless transceiver, a processor coupled to the wireless transceiver, a memory coupled to the processor and a program stored in the memory and running on the processor. The program provides automatic transitioning between a wireless infrastructure communication mode to an ad-hoc communication mode. The infrastructure mode is used when a request from a mobile device is received to access a communications network. The ad-hoc mode is used when a request from the mobile device is received to access resources on the portable electronic device.
摘要:
A display device having a display matrix including a pixel border of width x and located around the edge locations of the matrix for improved viewability. In particular, the border can be several pixels wide, e.g., 1
摘要:
Methods and apparatus are described for providing a time-based warning indicating that the energy capacity of a primary energy source of a battery-powered computer has discharged to a low level, and using residual energy of the primary energy source to perform at least one pre-cutoff function. The time-based warning ensures that the warning is provided in a timely manner by overcoming problems caused by analog to digital converter voltage measurement accuracy limitations and flat battery operating voltage versus discharge curves. The primary energy source can be a rechargeable battery, which can also be the sole energy source for the computer. The battery provides power to operate the computer until the battery voltage discharges to the cutoff voltage. The methods and apparatus provide advantages because they reserve the residual energy in the battery to perform at least one pre-cutoff function within a first duration before the battery discharges to the cutoff voltage. For example, the residual energy can be used to retain data stored in the computer between opportunities to charge the battery. Some embodiments of the invention include hardware resources coupled with the processor to lock out power and application activation when the rechargeable battery has discharged to a predetermined hardware lockout voltage. The value of the hardware lockout voltage can be based on the battery retaining a residual energy sufficient for performing the corresponding pre-cutoff function within an amount of time that is expected to enable the user to perform the function.
摘要:
A handheld computer having a housing with a midframe construction is described. The housing includes a front shell and a back shell coupled to a midframe. The handheld computer also includes two accessory slots for a stylus or other devices on the left and right sides of the housing. The handheld computer also includes an infrared port which is an integral portion of the housing.
摘要:
A portable electronic device is disclosed. The portable electronic device includes a wireless transceiver, a processor coupled to the wireless transceiver, a memory coupled to the processor and a program stored in the memory and running on the processor. The program provides automatic transitioning between a wireless infrastructure communication mode to an ad-hoc communication mode. The infrastructure mode is used when a request from a mobile device is received to access a communications network. The ad-hoc mode is used when a request from the mobile device is received to access resources on the portable electronic device.
摘要:
A portable electronic device is disclosed. The portable electronic device includes a wireless transceiver, a processor coupled to the wireless transceiver, a memory coupled to the processor and a program stored in the memory and running on the processor. The program provides automatic transitioning between a wireless infrastructure communication mode to an ad-hoc communication mode. The infrastructure mode is used when a request from a mobile device is received to access a communications network. The ad-hoc mode is used when a request from the mobile device is received to access resources on the portable electronic device.
摘要:
A portable electronic device is disclosed. The portable electronic device includes a wireless transceiver, a processor coupled to the wireless transceiver, a memory coupled to the processor and a program stored in the memory and running on the processor. The program provides automatic transitioning between a wireless infrastructure communication mode to an ad-hoc communication mode. The infrastructure mode is used when a request from a mobile device is received to access a communications network. The ad-hoc mode is used when a request from the mobile device is received to access resources on the portable electronic device.
摘要:
A method and apparatus for multiplexing time-shared base stations between a plurality of radio communication systems in a cellular communication system. Each radio communication system in the cellular system is assigned a limited unique set of frequencies for communication therein. Base stations in the cellular system are synchronized to a common time base and frequency reuse is achieved by time-sharing the frequencies via allocated time slots. Base stations activated to communicate in a first radio communication system and using the same frequencies that may interfere with each other are activated in the first system only during selected time intervals while same-frequency base stations nearby are deactivated in the first system. The deactivated base stations are then in turn activated in the first system while previously activated same-frequency base stations nearby are deactivated. Enhanced base station efficiency is achieved using the present inventive method by activating the time sharing base stations to communicate in one or more additional radio communication systems during periods when the base stations are deactivated in the first system. The radio communication systems can use differing numbers of assigned frequencies having differing time slot durations. The transmission periods used by each system may be mutually exclusive, or may overlap.
摘要:
In a personal communications device having a touch sensitive display screen, text may be marked by a user to be used with different applications. In particular, to begin marking, a user has to maintain his touch at a location on the screen for a short predetermined period of time until the system detects that the position is held over the same character for a delayed period, at which time the system beeps to provide an indication that there has been a change of operation mode. The marking mode continues in operation until the user removes his contact from the touch screen. Thus, text over which the contact point passes after the initiation of the marking mode is marked, until the user removes his contact point from the touch screen. A second beep is sounded to alert the user of the termination of the marking mode, and the appearance of a menu of operations on the screen. The menu of operations echoes the marked text for user confirmation. The marked text may be used by the user in a number of applications, among which include a calling application whereby the marked text is used to place a call.
摘要:
A display device having a display matrix including a pixel border of width x and located around the edge locations of the matrix for improved viewability. The pixels of the border are “dummy pixels” each containing a red, a green and a blue subpixel. Each subpixel has a color filter and is manufactured with a “dummy” transistor which operates to fix open the subpixels thereby allowing a predetermined amount of “white” color brightness through the dummy pixels. The pixel border is useful for increasing viewability of characters that are displayed along the edge of the LCD matrix area in which images are generated from a frame buffer memory.