Electronic digital logic circuitry – Signal sensitivity or transmission integrity – Bus or line termination
Reexamination Certificate
2006-11-21
2006-11-21
Chang, Daniel D. (Department: 2819)
Electronic digital logic circuitry
Signal sensitivity or transmission integrity
Bus or line termination
C327S321000
Reexamination Certificate
active
07138821
ABSTRACT:
A digital blocking filter and filtering method are provided for a device receiving signals from a transmission line. The transmission line, which may comprise part of a complex bus system, is incompletely terminated, thereby resulting in a reflection signal within the line with transmission of a signal. The digital blocking filter includes a pulse generator for generating a masking pulse timed and of sufficient duration to substantially block at the device the reflection signal, and logic for combining the masking pulse and a received signal from the transmission line, thereby substantially blocking the reflection signal. Circuitry for handling reflection signals of various duration, as well as for substantially blocking a reflection signal on either a falling edge or a rising edge of a state change in the received signal are provided.
REFERENCES:
patent: 4498021 (1985-02-01), Uya
patent: 4943739 (1990-07-01), Slaughter
patent: 5227677 (1993-07-01), Furman
patent: 5949825 (1999-09-01), Naffziger
patent: 6160416 (2000-12-01), Adduci et al.
De Langen Klaas-Jan
Toy Edmond
Chang Daniel D.
Fortin Kevin
Koninklijke Philips Electronics , N.V.
LandOfFree
Digital filter circuit and method for blocking a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital filter circuit and method for blocking a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital filter circuit and method for blocking a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3635148