Invention Grant
US07091895B2 A/D converter, digital PLL circuit using the same, and information recording apparatus using the same
有权
A / D转换器，使用该数字PLL电路的数字PLL电路以及使用其的信息记录装置
- Patent Title: A/D converter, digital PLL circuit using the same, and information recording apparatus using the same
- Patent Title (中): A / D转换器，使用该数字PLL电路的数字PLL电路以及使用其的信息记录装置
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Application No.: US10957385Application Date: 2004-10-01
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Publication No.: US07091895B2Publication Date: 2006-08-15
- Inventor: Hiromi Honma
- Applicant: Hiromi Honma
- Applicant Address: JP Tokyo
- Assignee: NEC Corporation
- Current Assignee: NEC Corporation
- Current Assignee Address: JP Tokyo
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Priority: JP2003/344053 20031002
- Main IPC: H03M1/00
- IPC: H03M1/00
Abstract:
An A/D converter includes a low-bit resolution A/D which converts an input signal into a digital value of 4 bits or less, and a low-pass digital filter which suppresses a high-frequency-band component in an output from the low-bit resolution A/D, and extracts phase information contained in the input signal as amplitude information. A digital PLL circuit and information recording apparatus are also disclosed.
Public/Granted literature
- US20050073454A1 A/D converter, digital PLL circuit using the same, and information recording apparatus using the same Public/Granted day:2005-04-07
Information query
