Login| Sign Up| Help| Contact|

Patent Searching and Data


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 (ZTE Plaza, Keji Road South Hi-Tech Industrial Park, Nanshan Distric, Shenzhen Guangdong 7, 518057, CN)
文冠果 (中国广东省深圳市南山区高新技术产业园 科技南路中兴通讯大厦, Guangdong 7, 518057, CN)
HE, Jian (ZTE Plaza, Keji Road South Hi-Tech Industrial Park, Nanshan Distric, Shenzhen Guangdong 7, 518057, CN)
何剑 (中国广东省深圳市南山区高新技术产业园 科技南路中兴通讯大厦, Guangdong 7, 518057, CN)
Application Number:
CN2005/001414
Publication Date:
March 15, 2007
Filing Date:
September 07, 2005
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ZTE CORPORATION (ZTE Plaza, Keji Road South Hi-Tech Industrial Park, Nanshan Distric, Shenzhen Guangdong 7, 518057, CN)
中兴通讯股份有限公司 (中国广东省深圳市南山区高新技术产业园 科技南路中兴通讯大厦, Guangdong 7, 518057, CN)
WEN, Guanguo (ZTE Plaza, Keji Road South Hi-Tech Industrial Park, Nanshan Distric, Shenzhen Guangdong 7, 518057, CN)
文冠果 (中国广东省深圳市南山区高新技术产业园 科技南路中兴通讯大厦, Guangdong 7, 518057, CN)
HE, Jian (ZTE Plaza, Keji Road South Hi-Tech Industrial Park, Nanshan Distric, Shenzhen Guangdong 7, 518057, CN)
International Classes:
H03K7/00
Foreign References:
US20050017993A1
EP1341150A1
US20030117351A1
US20030090499A1
Attorney, Agent or Firm:
AFD CHINA INTELLECTUAL PROPERTY LAW OFFICE (Technology Fortune Center Suite B 305A, 8 Xueqing Rd Haidian District, Beijing 5, 100085, CN)
Download PDF: