. . "One recent solution to eliminate the use of cables for connecting the computer system, particularly portable computer, to peripheral devices as well as to other computer systems is to establish wireless infrared communication via a wireless area network as disclosed, for example, in U.S. Pat. Nos. 5,099,346 and 5,247,380 for Infrared Communication Network issued to Lee et al., U.S. Pat. No. 5,440," . .