Method and apparatus for reducing signal edge jitter in an output signal of a numerically controlled oscillator

A digitally controlled oscillation and output signal technology, applied in measuring devices, automatic power control, electrical digital data processing, etc., can solve problems such as phase noise, achieve small area requirements, reduce noise, and simplify circuit design.

Active Publication Date: 2016-09-14
ROBERT BOSCH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This then leads to phase noise, the so-called jitter

Method used

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  • Method and apparatus for reducing signal edge jitter in an output signal of a numerically controlled oscillator
  • Method and apparatus for reducing signal edge jitter in an output signal of a numerically controlled oscillator
  • Method and apparatus for reducing signal edge jitter in an output signal of a numerically controlled oscillator

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Embodiment Construction

[0046] In the figures, identical or similar elements can be identified by identical or similar reference signs, a repeated description being omitted. Furthermore, the figures of the drawings, their description and the claims contain numerous features in combination. It is clear to the skilled person that these features can also be considered individually or that they can be combined into other combinations not explicitly described here. Furthermore, the invention may be set forth in the following description using different scales and dimensions, where the invention should be construed as not being limited to these scales and dimensions. Furthermore, the method steps according to the invention can be carried out repeatedly and in a sequence other than the one described. If an embodiment includes an "and / or" association between a first feature / step and a second feature / step, then this can be read as that the embodiment not only has the first feature / first step, Furthermore, t...

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Abstract

The invention relates to a method for reducing signal edge jitter in an output signal of a numerically controlled oscillator. The method has the step of providing (110) a first accumulator output signal via a first accumulator (208), the first accumulator (208) being configured to process the input signal, wherein the first accumulator in the event of an overflow Continue to use carry. Furthermore, in the providing step, a second accumulator output signal is provided via a second accumulator ( 210 ), which is designed to process the input signal, wherein the second accumulator discards a carry in the event of an overflow. Furthermore, the method comprises the steps of outputting (120) a second accumulator output signal at the output (204) of the numerically controlled oscillator (200) and synchronizing the second accumulator using the first accumulator output signal A step of.

Description

technical field [0001] The invention relates to a method and a device and a computer program product for reducing signal edge jitter in an output signal of a numerically controlled oscillator according to the independent claims. Background technique [0002] Oscillators are used in many signal processing fields. Through the propagation of binary digital information, the application of numerically controlled oscillators has been developed. Since a binary signal contains no intermediate states between two signal states, a realistic reproduction of an analog signal can only be achieved via a suitably high sampling rate. The sampling rate is controlled via the resonance frequency of an excitable, oscillating system such as a micromechanical oscillator or a ring oscillator. For this, most require the resonant frequency to be lowered to a lower frequency. [0003] In the case of reducing the input frequency to the desired output frequency, undesired side effects can lead to dis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03L7/099G01C19/5776G01C19/02
CPCG01C19/5776H03L7/0991G06F1/022G06F1/0328G06F1/0342
Inventor A.布曼M.凯克
Owner ROBERT BOSCH GMBH
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