Computerized parking meter system

Claim 1

A computerized parking meter system, comprising: a host computer; a plurality of parking meters each being connected to said host computer by multi-core cables by which electronical power as well as signals can be transferred between each parking meter and said host computer, each parking meter comprising: a panel with front and back sides each provided with displays in order to alternatively display a remaining parking time, a remaining parking fee, an over parking time and a deficient parking fee, said panel further having an indicating lamp to illustrate the over parking time; a pair of sensors to detect both arrival time and departure time of a car; a keyboard both to input a car identified code for coin-discharging and for over parking time by an operator; a housing provided with a coin-inserting port through which coins are inserted into said parking meter; and an internal structure including a central processing unit connected with a timer controller, said panel, a speaker, a keyboard controller and said sensors so as to detect a car arrival and departure and to remotely control communication with said host computer, said internal structure further comprising a coin passage and a coin collection box, and a second sensor disposed at an inlet of said coin passage to transfer an inserted coin value signal to said central processing unit.