Abstract:
A wire/wireless communication system includes two units for wire/wireless communication of information using a telephone network between two locations which are far away from each other. One of the two units is a data transmitting unit, such as a computer terminal, which is positioned at a first location and the other is a data receiving unit. To the units, infrared transceivers are coupled to transmit information as infrared radiation and receive the infrared radiation. Also, to the data transmitting and receiving units, telephones are connected. These telephones are interconnected by the telephone network therebetween and are respectively connected to transceivers. Wireless communication between the computer terminal of the data transmitting unit and the telephone which are positioned at the first location may be accomplished by the transceivers respectively coupled to them. The electrical signal corresponding to the information from the computer terminal is supplied through the telephone network to the telephone which is positioned adjacent to the computer terminal at the second location.
Abstract:
A wireless communication system and process for transmission of data communications, may be practiced with a microprocessor, a memory, a controller, a selector and a communication block, and the effect of the wireless communication system for selecting a communication transmission method lies in the fact that a user can select a wireless communication device according to user's needs in a wireless communication device having at least one communication transmission method or a plurality of wireless communication devices having different communication transmission methods, using only one controller.
Abstract:
A logic module for embodying a wide combination of logic and sequential logic in response to a user's demand is divided into a combination circuit part and a sequential circuit part. The combination circuit part is divided into a first stage including a first and a second two-input multiplexers and a second stage. The respective input terminals of the first and second multiplexers are connected to output terminals of two-input AND gates and a first and second input terminals of the two-input AND gates are data and inverted data to select the desired data state. The respective first and second multiplexers have select control input terminals which are connected to an output of an exclusive OR gate having two inputs. The second stage of the combination circuit part includes a third two-input multiplexer of which the first input is connected to the output of the first multiplexer, and a second input is connected to the output of the second multiplexer and a data select control input is connected to an output of a four-input logic gate. The four-input logic gate has two data inputs and two inverted data inputs, thereby embodying the AND combination of two data on demand. The sequential circuit part of a logic module consists of a switching part and a sequential part. The one of outputs from the first and second multiplexers of the combination circuit part is directly selected by the switching part.