Patent ID: 7352713

Claim:
A multiplexed signal quality display system for measuring the quality of a multiplexed signal from a communication device wherein a band width to be used and the number of communication channels capable of being accommodated are determined by a diffusion code length, and channels to be used having the number of communication channels, which are determined by a diffusion code length, are decided in terms of a diffusion code number affixed to the type of the diffusion code, to effect communication while ensuring multi-channel communication lines in one and same band, said system comprising: a code length setting updating means which initializes a diffusion code length and which updates values from the initialized value up to a predetermined final value; a diffusion code number setting updating means which, each time the diffusion code length set by said code length setting updating means is updated, updates diffusion code numbers corresponding to the number of channels determined by diffusion code lengths respectively, from an initialized value up to a predetermined final value; a diffusion code generating means which generates a diffusion code in accordance with a diffusion code length and a diffusion code number generated respectively by said code length setting updating means and said diffusion code number setting updating means; a demodulator means which demodulates the signal in each said channel in accordance with the diffusion code generated by said diffusion code generating means and said diffusion code length and said diffusion code number; a power coefficient calculator which calculates a power coefficient of the signal demodulated by said demodulator means; a memory which stores the power coefficient of each said channel calculated by said power coefficient calculation in accordance with the diffusion code length and the diffusion code number; a setting means which reads a power coefficient from among the power coefficients stored in said memory while specifying desired diffusion code and diffusion code number; a graphing means which converts the power coefficient read by said setting means into a power value, determines a length in Y-axis direction in accordance with said power value, and defines a width in X-axis direction in accordance with the diffusion code length to form a strip-like display region; an image memory which stores image data graphed by said graphing means; and a calculation result display means which displays the image stored in said image memory.