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US 9,425,796 B2Granted
Data converting device, digital transmitting apparatus using the data converting device, and related data converting method
AssigneeMediatek Inc.
InventorsYang-Chuan Chen, Chih-Jung Chen, Hsiang-Hui Chang
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Abstract
A data converting device includes: a data sampling circuit arranged to up-sample a digital signal to generate an up-sampling signal according to a clock signal; a voltage level generating circuit arranged to generate an adjustable voltage; and a signal converting circuit arranged to generate a converting signal according to the adjustable voltage and the up-sampling signal.
Claims19
A data converting device, comprising:
- a data sampling circuit, arranged to up-sample a digital signal to generate an up-sampling signal according to a clock signal;
- a voltage level generating circuit, arranged to generate an adjustable voltage;
- and
- a signal converting circuit, arranged to generate a converting signal according to the adjustable voltage and the up-sampling signal, wherein the signal converting circuit refers the adjustable voltage to control an instant power of the converting signal corresponding to the up-sampling signal.
1 more element
A digital transmitting apparatus, comprising:
- a plurality of first data converting devices, arranged to generate a plurality of first converting signals according to a plurality of first digital signals respectively;
- a plurality of second data converting devices, arranged to generate a plurality of second converting signals according to a plurality of second digital signals respectively, and at least one of the plurality of second data converting devices comprising:
- a data sampling circuit, arranged to up-sample a second digital signal to generate an up-sampling signal according to a clock signal;
- a voltage level generating circuit, arranged to generate an adjustable voltage;
- and
- a signal converting circuit, arranged to generate a second converting signal according to the adjustable voltage and the up-sampling signal;
- and
- a loading circuit, arranged to generate an output signal according to the plurality of first converting signals and the plurality of second converting signals;
- wherein the plurality of second digital signals are less significant than the plurality of first digital signals.
6 more elements
A data converting method, comprising:
- up-sampling a digital signal to generate an up-sampling signal according to a clock signal;
- generating an adjustable voltage, wherein the step of generating the adjustable voltage comprises:
- using a current-based digital-to-analog converter to generate a current;
- and
- using a field-effected transistor to generate the adjustable voltage according to the current;
- and
- generating a converting signal according to the adjustable voltage and the up-sampling signal.
4 more elements
A data converting method, comprising:
- up-sampling a digital signal to generate an up-sampling signal according to a clock signal;
- generating an adjustable voltage;
- and
- generating a converting signal according to the adjustable voltage and the up-sampling signal, wherein the step of generating the converting signal according to the adjustable voltage and the up-sampling signal comprises:
- using a first field-effected transistor to generate a first voltage according to the adjustable voltage;
- using a second field-effected transistor having a gate terminal receiving the up-sampling signal, a first connecting terminal receiving the first voltage, and a second connecting terminal outputting a second voltage;
- and
- using a third field-effected transistor having a gate terminal receiving a tuning voltage, a first connecting terminal receiving the second voltage, and a second connecting terminal outputting the converting signal.
5 more elements
A data converting method, comprising:
- up-sampling a digital signal to generate an up-sampling signal according to a clock signal;
- generating an adjustable voltage;
- generating a converting signal according to the adjustable voltage and the up-sampling signal;
- and
- adjusting a voltage level of the up-sampling signal to generate an adjusted up-sampling signal according to the adjustable voltage;
- wherein the step of generating the converting signal according to the adjustable voltage and the up-sampling signal comprises:
- generating the converting signal according to the adjusted up-sampling signal.
4 more elements
A data converting method, comprising:
- up-sampling a digital signal to generate an up-sampling signal according to a clock signal;
- generating an adjustable voltage;
- adjusting a voltage level of the up-sampling signal to generate an adjusted up-sampling signal according to the adjustable voltage;
- and
- generating a converting signal according to the adjustable voltage and the up-sampling signal, wherein the step of generating the converting signal according to the adjustable voltage and the up-sampling signal comprises:
- using a first field-effected transistor having a gate terminal receiving the adjusted up-sampling signal, a first connecting terminal connecting to a reference voltage, and a second connecting terminal outputting a first voltage;
- and
- using a second field-effected transistor, having a gate terminal receiving a tuning voltage, a first connecting terminal receiving the first voltage, and a second connecting terminal outputting the converting signal.
5 more elements
Dependencies are inferred from the claim text.