Title:
DEVICE FOR GENERATING A 4-CHANNEL PULSE WIDTH MODULATION SIGNAL AND ELECTRONIC SYSTEM INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2012/005482
Kind Code:
A2
Abstract:
A device for generating a 4-channel pulse width modulation signal includes a programmable logic unit, a binary counter unit, a 4-channel binary comparison unit, and an output buffer unit. The programmable logic unit is programmed to latch a digital input signal of 8 bits on the basis of the logic level of a 4-bit select signal and then generate first to fourth program signals, each having 8 bits. The binary counter unit generates an 8-bit count signal, which is up-counted sequentially on the basis of the clock signal and the control signal. The 4-channel binary comparison unit separately generates first to fourth pulse width modulation signals by comparing the count signal with each of the first to fourth program signals. The output buffer unit stores and outputs first to fourth pulse width modulation signals. Each frequency of the first to fourth pulse modulation signals has a value obtained by dividing the frequency of the clock signal by a division ratio of 28. Logic levels of first to fourth pulse width modulation signals have a first or second logic level according to the comparison result of the count signal and the first to fourth program signals.
Inventors:
CHO, Jae Myoung (114-102 Taeyeong Apt, Daeheung-dong,,Mapo-g, Seoul 121-080, 121-080, KR)
조재명 (서울특별시 마포구 대흥동 태영아파트 114동 102호, 121-080 Seoul, 121-080, KR)
KWON, Mi Hwa (114-102 Taeyeong Apt, Daeheung-dong,,Mapo-g, Seoul 121-080, 121-080, KR)
권미화 (서울특별시 마포구 대흥동 태영아파트 114동 102호, 121-080 Seoul, 121-080, KR)
OH, Young Ha (302 Jaesunjutaek, 102-65, Hwagokbon-dong,,Gangseo-g, Seoul 157-872, 157-872, KR)
오영하 (서울특별시 강서구 화곡본동 102-65 재선주택 302, 157-872 Seoul, 157-872, KR)
조재명 (서울특별시 마포구 대흥동 태영아파트 114동 102호, 121-080 Seoul, 121-080, KR)
KWON, Mi Hwa (114-102 Taeyeong Apt, Daeheung-dong,,Mapo-g, Seoul 121-080, 121-080, KR)
권미화 (서울특별시 마포구 대흥동 태영아파트 114동 102호, 121-080 Seoul, 121-080, KR)
OH, Young Ha (302 Jaesunjutaek, 102-65, Hwagokbon-dong,,Gangseo-g, Seoul 157-872, 157-872, KR)
오영하 (서울특별시 강서구 화곡본동 102-65 재선주택 302, 157-872 Seoul, 157-872, KR)
Application Number:
KR2011/004875
Publication Date:
January 12, 2012
Filing Date:
July 04, 2011
Export Citation:
Assignee:
JMCENGINEERING CO., LTD (1138, Samchang Plaza.,173, Dohwa-dong,,Mapo-g, Seoul 121-812, 121-812, KR)
제이엠씨엔지니어링 주식회사 (서울특별시 마포구 도화동 173 삼창프라자 1138호, 121-812 Seoul, 121-812, KR)
CHO, Jae Myoung (114-102 Taeyeong Apt, Daeheung-dong,,Mapo-g, Seoul 121-080, 121-080, KR)
조재명 (서울특별시 마포구 대흥동 태영아파트 114동 102호, 121-080 Seoul, 121-080, KR)
KWON, Mi Hwa (114-102 Taeyeong Apt, Daeheung-dong,,Mapo-g, Seoul 121-080, 121-080, KR)
권미화 (서울특별시 마포구 대흥동 태영아파트 114동 102호, 121-080 Seoul, 121-080, KR)
OH, Young Ha (302 Jaesunjutaek, 102-65, Hwagokbon-dong,,Gangseo-g, Seoul 157-872, 157-872, KR)
제이엠씨엔지니어링 주식회사 (서울특별시 마포구 도화동 173 삼창프라자 1138호, 121-812 Seoul, 121-812, KR)
CHO, Jae Myoung (114-102 Taeyeong Apt, Daeheung-dong,,Mapo-g, Seoul 121-080, 121-080, KR)
조재명 (서울특별시 마포구 대흥동 태영아파트 114동 102호, 121-080 Seoul, 121-080, KR)
KWON, Mi Hwa (114-102 Taeyeong Apt, Daeheung-dong,,Mapo-g, Seoul 121-080, 121-080, KR)
권미화 (서울특별시 마포구 대흥동 태영아파트 114동 102호, 121-080 Seoul, 121-080, KR)
OH, Young Ha (302 Jaesunjutaek, 102-65, Hwagokbon-dong,,Gangseo-g, Seoul 157-872, 157-872, KR)
International Classes:
H03K7/08; G06F1/08; H03K19/177
Attorney, Agent or Firm:
JO, Chi Hoon (3rd Floor, Eden Bldg.1523-1, Seocho 3-dong,Seocho-Ku, Seoul 137-871, 137-871, KR)
Claims: