Reception performance measuring apparatus for television signal

Details Reception performance measuring apparatus for television signal Reception performance measuring apparatus for television signal

2006-12-19

2006-12-19

Lee, Michael H. (Department: 2622)

Television

Monitoring, testing, or measuring

C348S614000, C324S606000, C324S607000

Reexamination Certificate

active

07151559

ABSTRACT:
When a TS (Transport Stream) generator generates a TS, the TS is modulated by a signal modulator and outputted to a tuner set. In the tuner set, various noises generated by a noise source are added to an input signal, reception processing is performed, and then the resultant signal is outputted to a LVDS (Law Voltage Differential Signal) converter. The LVDS converter converts the input signal into a LVDS of the same format as TS, and outputs the LVDS to an error rate measuring device. The error rate measuring device find a difference between the generated TS and the inputted LVDS while adjusting a synchronization and outputs the difference to a personal computer. The personal computer compares the inputted difference with a predetermined BER (Bit Error Rate), and determines performance regarding the reception process of the tuner set based on the comparison result.

REFERENCES:
patent: 4425578 (1984-01-01), Haselwood et al.
patent: 5260784 (1993-11-01), Kamiyama et al.
patent: 6734898 (2004-05-01), Zeidler
patent: 6741277 (2004-05-01), Rau
patent: 2000-32365 (2000-01-01), None
patent: 2000-299665 (2000-10-01), None
patent: 2002-94487 (2002-03-01), None
Patent Abstracts of Japan No. 2002-094487 published Mar. 29, 2002 (1 page).
Patent Abstracts of Japan No. 2000-299665 published Oct. 24, 2000 (1 page).
Patent Abstracts of Japan No. 2000-032365, published Jan. 28, 2000 (1 page).

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