초록 ▼

A data retrieval and acquisition system having a wireless handheld interface for data entry by the user. The system includes a communiation server for communicating, such as throuhg IR signals, with the handheld interfaces. The communications server communicates with multiple command servers and wit

A data retrieval and acquisition system having a wireless handheld interface for data entry by the user. The system includes a communiation server for communicating, such as throuhg IR signals, with the handheld interfaces. The communications server communicates with multiple command servers and with a master server and/or other communication servers through a communications bus. The handheld interface includes touch screen which is operated through an event driven architecture. The user is allowed to enter data through virtual rolling keys, a scroll bar, virtual key pad, bar code reader, and the like. The system minimized the transmission time by minimizing the necessary information transmitted and by synchronizing the operation of the handheld interfaces with the corresponding communications server. The communications server transmits information to the handheld through a first unique protocal and to the command server through a second unique protocal. Data transmission is further reduces by using shorthand command codes for constants, such as for commands, user names, and the like.

대표청구항 ▼

1. A communication protocol comprising:multiple communications messages transmitted between a first computer and a second computer, each message comprising a plurality of information packets, each of which being equal in length, wherein a first information packet in each message is constructed with

1. A communication protocol comprising:multiple communications messages transmitted between a first computer and a second computer, each message comprising a plurality of information packets, each of which being equal in length, wherein a first information packet in each message is constructed with a first format including a long header and a data segment and wherein all information packets subsequent to said first information packet in each message are constructed with a second format including a short header and a data segment, the data segments from said plurality of information packets within each message forming a single data set related to a single matter.