Abstract: Embodiments of this invention provide for a portable computer that determines whether an accessory device is actively connected to it. In one embodiment, the portable computer may include a signal line accessible through an output of the portable computing device. The signal line may be connected to a communication device such as a communication cradle. The portable computer may detect a signal on the signal line to determine whether the communication device is actively connected to the portable computer. If the communication device is actively connected, the portable computer suspends implementation of a time-out feature that would otherwise reduce power consumption of the portable computer.

Abstract: An embodiment of the invention provides for a housing having a first shell, a midframe, and a second shell. The first shell and the second shell each providing an exterior surface to the handheld computer. The housing is formed by coupling a cap to the midframe to form a portion of the housing. The portion of the housing is coupled to the first shell, and to the second shell.

Abstract: A handheld computer is provided that includes a first module combined with one or more modules. The first module includes a housing having one or more coupling surfaces, with each coupling surface including a coupling mechanism. A second module is coupleable to the first module. The second module includes a third coupling surface having a second coupling mechanism for mating with the first coupling mechanism. The third coupling surface is positioned on the second module so as to abut at least partially against the second coupling surface when the first coupling mechanism is mated with the second coupling mechanism.

Abstract: A playback system is provided to locate and playback streaming media from network resources. The playback system includes a search module that signals a query to a network site, and receives in return a search result. The search result identifies one or more links that are selectable to open media files. A media player couples to the search module to automatically play back streaming media contained in media files located by the search result.

Abstract: An improved method and apparatus manages communications port contention and power consumption for a handheld computer, particularly handheld computers with a communications protocol that boosts power consumption when active, such as an RS-232 protocol. The improved method provides communications channel management that automatically opens the communications channel in response to a wake-up signal sent to a handheld computer from a peripheral device. The computer peripheral device is explicitly and/or implicitly identified. The opened communications channel is closed in response to receiving some data from the peripheral device, and/or after a device timeout expires without the handheld computer receiving data from the computer peripheral device.

Abstract: A data entry mechanism for a handheld computer is provided. The data entry mechanism comprises: a plurality of keys configured to be actuated by a stylus of the handheld computer, each of the plurality of keys being electronically coupleable to the handheld computer and generating an electronic signal upon actuation by the stylus; and an encasement structure to retain the plurality of keys, the structure being engagable with a slot of the handheld computer. The data entry mechanism may be used to facilitate data input to a computing or a telecommunications device.

Abstract: A method and system for synchronizing two computer systems supporting multiple synchronization techniques is described. In one example system, a portable computer system is loaded with synchronization transport modules. An application on the portable computer system is executed causing the application to automatically recognize the synchronization transport modules. The portable computer system receives a selection corresponding to one of the two synchronization transport modules. The selection could be from a user and would indicate that the user prefers to synchronize with the second computer system using a particular method of external communication. After the selection, the portable computer system synchronizes with the other computer system using the selected method of external communication.

Abstract: A pen-based computer text input system capable of interpreting a special pre-defined set of single stroke glyphs. Each input stroke is identified with one of three categories: (1) pre-character modifier strokes, (2) character or symbol strokes, or (3) post-character modifier strokes. Pre-character modifier strokes precede character strokes and inform the present recognition system that a subsequently entered character stroke is to be modified by the pre-character modifier stroke in a pre-defined manner. Character strokes cause a character or symbol to be displayed on the display device the moment it is input on the writing tablet, interpreted in accordance with any pre-character modifier stroke. A post-character modifier stroke causes the recognition system to modify, in a pre-defined manner, a character or symbol which was previously entered and displayed. An important advantage of the present invention is its ability to provide immediate recognition of multiple stroke characters without using boxed input.

Abstract: A peripheral device and attachment scheme is provided to enable peripheral devices to be detachably coupled to handheld computers. The attachment scheme enables a peripheral device to be piggy-backed with a handheld computer, with the two devices being connected so that the front face of the peripheral device is adjacent a back surface of the handheld computer. The peripheral attachment scheme includes a moveable latch element that is actuable through insertion of a laterally positioned mechanism. An operator may engage and disengage the latch element with the handheld computer with one hand.

Abstract: A search request is received over the network to play back media that satisfies one or more search criteria. A plurality of media resources are selected by comparing the search criteria to information associated with the media resources. A set of media resources is established based on the plurality of media resources Media resources that include the set of media resources are played back through the network on a network enabled device. In response to termination of playback of a given media resource, playback of another media resource is automatically initiated.

Abstract: An attachment device is provided for a handheld computer. The attachment device includes a first structure that attaches into a back face of a handheld computer. A second structure is moveably coupled to the first structure, and is positionable against the front face of the handheld computer. The first structure may couple to the back face of the handheld computer using a spring-loaded latch mechanism or other detachable coupling. An embodiment provides that the attachment device is electronically enabled to include one or more electrical components. The attachment device may also include a connector to electrically couple with a peripheral connector of the handheld computer.

Abstract: Embodiments of the invention provide for operating a handheld computer with multiple time-out periods in a manner that is more efficient and effective for conserving power than previous systems. In an embodiment, the handheld computer implements one or more additional time-out periods by identifying an occurrence of an event that requires the handheld computer to be in the high power state to perform a specific function. An event may include a function such as sounding an alarm, although other events are also encompassed by embodiments of this invention. When an event is identified, the power state of the handheld computer prior to identifying the event is recalled. The handheld computer then implements a time-out period based on its previous power state. In one embodiment, if the handheld computer was in a low-power state prior to the event occurring, the time-out period is shortened.

Abstract: A housing cap is provided for a handheld computer. The housing cap includes a structure having a length extending along a first axis and a height extending along a second axis. The structure includes a first exterior surface, a first strip and a second strip. The first exterior surface extends along the first axis, the first strip and the second strip each extending along the first axis and having a thickness. The first strip is dimensioned to adjoin an interior of the first exterior shell. The second strip is dimensioned to adjoin an interior of the second exterior shell. The structure includes an interior partially enclosed by the first exterior surface. The first strip and the second strip form an opening extending along the length of the housing cap opposite to the exterior surface. The opening is dimensioned to accommodate an antenna element and a segment of the frame for the handheld computer.

Abstract: Various embodiments of the invention provide for selection of a port in a portable computer as a pathway for exchanging data between the portable computer and an external data source. These embodiments can function with a variety of physical accessories, such as docking port cradles and modems, that connect the portable computer with apparatus that include an external data source. Some of the embodiments provide methods that include the receiving of a request signal for data exchange, and determining whether the signal is from a physical accessory. If the signal is from a physical accessory, the portable computer exchanges data through the corresponding physical accessory. On the other hand, if the portable computer determines that the signal is not from a physical accessory, the portable computer exchanges data through a predetermined port, such as a default port, or a port specified by the user as a preferred port.

Abstract: A palmtop computer system that incorporates mechanical buttons that combine the task of turning the palmtop computer system on and starting a particular application program. Furthermore, the same mechanical button can be used to navigate the application program to find the information that is most likely needed by the user. Additionally, external devices can be coupled to the palmtop computer system in a manner that allows the external hardware device to initiate specific application programs that cooperate with the external hardware device.

Abstract: 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.

Abstract: A fully integrated email system for a desktop computer with an associated palmtop computer is disclosed. The portable computer has an email client for viewing incoming email messages and composing outgoing email messages. The personal computer has an email synchronization conduit that synchronizes email on the portable computer email client with email for the desktop computer system. The email synchronization conduit ensures that the email state on the portable computer system matches the email state on the desktop personal computer system exactly. Thus, if an email message is deleted on the portable computer system then that email message will be deleted from the desktop personal computer system. Similarly, if an email message is deleted on the desktop personal computer system then that email message will be deleted from the portable computer system.

Abstract: A wireless communications system, apparatus and methods provide packet minimized communications between a wireless client and a proxy server. The methods use novel data compression techniques to enable wireless communications devices to complete transactions by exchanging a minimum number of data packets. In many circumstances a transaction comprises a single request packet from the wireless client to the proxy server and a single response packet from the proxy server to the wireless client. The methods use a compact markup language, a compact transport protocol, a reliable message layer, hyperlink indices, server dependent forms, and a compressed user datagram protocol header. A compressed request message comprises a base document uniform resource locator followed by compressed data. The compressed data comprises field values and field indices corresponding to fields in a hyperlink document, and an indication of use of a hyperlink document.

Abstract: 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.