Electronic digital logic circuitry – Signal sensitivity or transmission integrity – Bus or line termination
Reexamination Certificate
2007-01-16
2007-01-16
Cho, James H. (Department: 2819)
Electronic digital logic circuitry
Signal sensitivity or transmission integrity
Bus or line termination
C326S031000
Reexamination Certificate
active
10560797
ABSTRACT:
A signal transmission system includes a transmitter and a receiver connected via a transmission line. When a control circuit103in the transmitter200outputs a test signal to a transmission line123, a voltage detection section112in the receiver210determines whether a voltage value on a terminal115falls within a given range or not. Based on the result, the control signal generation section113generates an instruction as to whether or not to change the current amount of the driving current. The control circuit103in the transmitter100drives the transmission line123with the driving current increased or decreased based on the instruction, and again outputs a test signal. This process is repeated until the voltage on the terminal115of the receiver210comes into the range. As a result, an optimum output impedance for the control circuit103of the transmitter200can be obtained. When transmitting a signal via the line, matching is dynamically established between the output impedance of the driving circuit and that of the line, whereby a fast signal transmission can be realized.
REFERENCES:
patent: 5585741 (1996-12-01), Jordan
patent: 6487250 (2002-11-01), Kato et al.
patent: 2001/0015882 (2001-08-01), Yanagawa
patent: 10-50070 (1998-02-01), None
patent: 10-261948 (1998-09-01), None
patent: 11-017518 (1999-01-01), None
patent: 2001-127614 (2001-05-01), None
patent: 2003-008419 (2003-01-01), None
patent: 2003-008421 (2003-01-01), None
International Search Report for corresponding Application No. PCT/JP2004/008962, mailed Jul. 27, 2004.
Cho James H.
Renner , Otto, Boisselle & Sklar, LLP
LandOfFree
Device and method for matching output impedance in signal... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device and method for matching output impedance in signal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device and method for matching output impedance in signal... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3794710