초록 ▼

The data network disclosed herein utilizes low duty cycle pulsed radio frequency energy to effect bidirectional wireless data communication between a server microcomputer unit and a plurality of peripheral units located within short range of the server unit, e.g. within 20 meters. By establishing a

The data network disclosed herein utilizes low duty cycle pulsed radio frequency energy to effect bidirectional wireless data communication between a server microcomputer unit and a plurality of peripheral units located within short range of the server unit, e.g. within 20 meters. By establishing a tightly synchronized common time base between the units and by the use of sparse codes, timed in relation to the common time base, low power consumption and avoidance of interference between nearby similar systems is obtained.

대표청구항 ▼

[ What is claimed is:] [1.] A data network system for effecting coordinated operation of a plurality of electronic devices, said system comprising:a server microcomputer unit;a plurality of peripheral units which are battery powered and portable, which provide either input information from the user

[ What is claimed is:] [1.] A data network system for effecting coordinated operation of a plurality of electronic devices, said system comprising:a server microcomputer unit;a plurality of peripheral units which are battery powered and portable, which provide either input information from the user or output information to the user, and which are adapted to operate within short range of said server unit;said server microcomputer incorporating an RF transmitter for sending commands and synchronizing information to said peripheral units;said peripheral units each including an RF receiver for detecting said commands and synchronizing information and including also an RF transmitter for sending input information from the user to said server microcomputer;said server microcomputer including a receiver for receiving input information transmitted from said peripheral units;said server and peripheral transmitters being energized in low duty cycle RF bursts at intervals determined by a code sequence which is timed in relation to said synchronizing information.