摘要:
A display control device comprises a navigation unit for generating route guidance data; a small-sized display unit for displaying information concerning audio-system; and a main unit connected via an interface to the navigation unit and the small-sized display unit with a communication cable, said main unit including: recognizing means for recognizing the connection of the small-sized display unit; and control means for sending out a request for route guidance display to the navigation unit when the recognizing means recognizes the connection of the small-sized display unit, and causing the received route guidance data to be displayed through interruption on the small-sized display unit when the route guidance data generated by the navigation unit is received via the communication cable and the interface.
摘要:
A display device is provided with a center unit 10 having a center display unit 12, a slave unit 20 having a slave display unit 21 and a communication line for communicatively connecting the center unit 10 and the slave unit 20. When the center control microcomputer 15 of the center unit 10 detects a predetermined operation through a key operating unit 14, the center control microcomputer 15 and the slave control microcomputer 24 make two of the center display unit 12 and the slave display unit 21 provide a linking display as if these display units operate as one display unit.
摘要:
In order to effectively avoid cochannel interferences in a multi-station communications system utilizing a plurality of channels in common, the order of transmission channels to be used is determined utilizing a transmission priority assigned to each channel. The subject matter is characterized in that (a) the transmission priority of a selected channel is raised if the selected channel is not used at another station, and (b) is lowered if the selected channel is used at another station. This means that the past use records of the transmission channels are accumulated so that a good channel can be selected with high probability. In other words, a transmission channel with high priority is still ready to be used even if it was not selected in the preceding selection.
摘要:
In a multiple access system for performing packet communication involving sharing of a single communication medium by a plurality of users, the single communication medium is divided into a plurality of channels. Each user monitors the condition of each channel, and probability of packet transmission to each channel is controlled in accordance with a monitored result.