Title:
A PULSE GENERATING CIRCUIT AND A CIRCUIT WHICH IMPLEMENTS LCD GRAY SCALE BY UTILIZING THE PULSE GENERATING CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2007/028275
Kind Code:
A1
Abstract:
The prevent invention provides a pulse generating circuit and a circuit which
utilizes the pulse generating circuit to implement LCD gray scale. Said LCD gray
scale implementing circuit possesses pulse generating unit, gray data reading
control unit, gray data memory, frame synchronization generating unit and gray
modulating unit. The pulse generating unit includes a first level pulse generating
unit, a second level pulse generating unit and at least one end level pulse generating
unit. Said first level pulse generating unit includes subframe counter and subframe
determine unit. The second level pulse generating unit has a second level counter
and second level pulse width generator, a second level comparator, a second level
first selector and second level second selector. The end level pulse generating
unit includes corresponding level counter, corresponding level pulse width
generator, corresponding level comparator and corresponding level first selector.
The invention reduces pulse reversal and saves power consumption, thus may improves
display effect.
Inventors:
WEN GUANGUO (CN)
HE JIAN (CN)
HE GANGYUE (CN)
ZHAO CONG (CN)
HE JIAN (CN)
HE GANGYUE (CN)
ZHAO CONG (CN)
Application Number:
PCT/CN2005/001414
Publication Date:
March 15, 2007
Filing Date:
September 07, 2005
Export Citation:
Assignee:
ZTE CORP (CN)
WEN GUANGUO (CN)
HE JIAN (CN)
HE GANGYUE (CN)
ZHAO CONG (CN)
WEN GUANGUO (CN)
HE JIAN (CN)
HE GANGYUE (CN)
ZHAO CONG (CN)
International Classes:
H03K7/00
Foreign References:
| US20050017993A1 | 2005-01-27 | |||
| EP1341150A1 | 2003-09-03 | |||
| US20030117351A1 | 2003-06-26 | |||
| US20030090499A1 | 2003-05-15 |
Attorney, Agent or Firm:
AFD CHINA INTELLECTUAL PROPERTY LAW OFFICE (8 Xueqing Rd Haidian District, Beijing 5, CN)
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