The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8493248 B1

PDF
Full Text
Expired
Date of Patent:
Jul. 23, 2013

Filed:

Apr. 23, 2012
Applicant:

Fangping Fan, Chengdu, CN;

Inventor:

Fangping Fan, Chengdu, CN;

Assignee:

IPGoal Microelectronics (SiChuan) Co., Ltd., Chengdu, Sichuan Province, CN;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A transforming circuit between parallel data and serial data includes a current source, a clock input sub-circuit, and a parallel data input sub-circuit. The clock input sub-circuit includes a first clock signal terminal and a second clock signal terminal. The transforming circuit between parallel data and serial data also includes a clock control sub-circuit and a serial data output control sub-circuit. The clock control sub-circuit includes four switching elements. A first and a third switching elements are controlled by the second clock signal terminal, and a second and a fourth switching elements are controlled by the first clock signal terminal. The serial data output control sub-circuit includes a fifth switching element and a sixth switching element to speed up the falling edge of the output signal flip, a seventh switching element and an eighth switching element to limit the output signal amplitude. A transforming system thereof is also provided.


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