1. A digital-to-analog converter circuit configured to convert an m-bit digital signal into an analog signal, the circuit comprising:
a bit voltage generator configured to segment the digital signal into n-bit (n\u2266m2) units from a least significant bit to a most significant bit and convert each bit of the segmented n-bit units of the digital signal into a first voltage or a second voltage;
an n number of first capacitors each configured to store the voltage for each bit output from the bit voltage generator;
an n number of switches whose first ends are connected to the n number of first capacitors;
a second capacitor connected to second ends of the n number of switches;
an output unit configured to output the voltage stored in the second capacitor as an analog signal; and
a control unit configured to control the n number of switches, connect in parallel the n number of first capacitors with the second capacitor, and adjust the voltage stored in the second capacitor,
wherein capacitance value of the first capacitor corresponding to a qth bit of each unit (where q is an integer equal to 1 or greater but not greater than n) is set to a value obtained by multiplying the capacitance of the first capacitor corresponding to the least significant bit with 2q-1.
2. A liquid crystal driving circuit configured to output a driving signal for driving pixels provided on a liquid crystal display panel, the circuit comprising:
a digital-to-analog converter circuit configured to convert an m-bit digital signal into an analog signal,
wherein the digital-to-analog converter circuit includes
a bit voltage generator configured to segment the digital signal into n-bit (n\u2266m2) units from a least significant bit to a most significant bit and convert each bit of the segmented n-bit units of the digital signal into a first voltage or a second voltage,
an n number of first capacitors each configured to store the voltage for each bit output from the bit voltage generator,
an n number of switches whose first ends are connected to the n number of first capacitors,
a second capacitor connected to second ends of the n number of switches,
an output unit configured to output the voltage stored in the second capacitor as an analog signal, and
a control unit configured to control the n number of switches, connect in parallel the n number of first capacitors with the second capacitor, and adjust the voltage stored in the second capacitor,
wherein capacitance value of the first capacitor corresponding to a qth bit of each unit (where q is an integer equal to 1 or greater but not greater than n) is set to a value obtained by multiplying the capacitance of the first capacitor corresponding to the least significant bit with 2q-1.
3. A liquid crystal device comprising:
a liquid crystal display panel; and
a liquid crystal driving circuit configured to output a driving signal for driving pixels provided on a liquid crystal display panel,
wherein the liquid crystal driving circuit includes a plurality of digital-to-analog converter circuits, each of the digital-to-analog converter circuits being configured to convert an m-bit digital signal into an analog signal,
wherein each of the digital-to-analog converter circuits includes
a bit voltage generator configured to segment the digital signal into n-bit (n\u2266m2) units from a least significant bit to a most significant bit and convert each bit of the segmented n-bit units of the digital signal into a first voltage or a second voltage,
an n number of first capacitors each configured to store the voltage for each bit output from the bit voltage generator,
an n number of switches whose first ends are connected to the n number of first capacitors,
a second capacitor connected to second ends of the n number of switches,
an output unit configured to output the voltage stored in the second capacitor as an analog signal, and
a control unit configured to control the n number of switches, connect in parallel the n number of first capacitors with the second capacitor, and adjust the voltage stored in the second capacitor,
wherein capacitance value of the first capacitor corresponding to a qth bit of each unit (where q is an integer equal to 1 or greater but not greater than n) is set to a value obtained by multiplying the capacitance of the first capacitor corresponding to the least significant bit with 2q-1.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A respirator product comprising:
an electric component;
a breathing connection;
a breathing gas source, which can be connected to the breathing connection; and
an electric connecting means in the connection area between the breathing connection and the breathing gas source for connection with the electric component.
2. A respirator product in accordance with claim 1, wherein the electric component is one of a measuring system, a monitoring system, a display, a telemetry system or an electrically heatable foil.
3. A respirator product in accordance with claim 1, wherein said breathing connection is arranged at a gas mask, a hood or a gas mask combined with a safety helmet.
4. A respirator product in accordance with claim 1, wherein said breathing gas source is a flexible breathing gas tube or a demand oxygen system.
5. A respirator product in accordance with claim 1, wherein the electric connection means transmits electric supply voltages and data.
6. A respirator product in accordance with claim 1, wherein the electric connection means provides a contactless connection in the form of an inductive coupling.
7. A breathing product comprising:
an electrical control;
an electric component;
a breathing connection;
a breathing gas source connected to the breathing connection; and
an electric connecting means in the connection area between the breathing connection and the breathing gas source for operative connection of said electric control with said electric component.
8. A breathing product in accordance with claim 7, wherein the electric component is one of a measuring system, a monitoring system, a display, a telemetry system or an electrically heatable foil.
9. A breathing product in accordance with claim 7, wherein said breathing connection is arranged at a gas mask, a hood or a gas mask combined with a safety helmet.
10. A breathing product in accordance with claim 7, wherein said breathing gas source is a flexible breathing gas tube or a demand oxygen system.
11. A breathing product in accordance with claim 7, wherein the electric connection means transmits electric supply voltages and data.
12. A breathing product in accordance with claim 7, wherein the electric connection means provides a contactless connection in the form of an inductive coupling.
13. A breathing product comprising:
a control unit;
an electric component; and
a releaseable inductive coupling between said control unit and said electric connection.
14. A breathing product in accordance with claim 13, further comprising:
a breathing connection;
a breathing gas source, which can be connected to the breathing connection in a connection area between the breathing connection and the breathing gas source, said releaseable inductive coupling being provided in said connection area.
15. A breathing product in accordance with claim 13, wherein the electric component is one of a measuring system, a monitoring system, a display, a telemetry system or an electrically heatable foil.
16. A breathing product in accordance with claim 13, wherein said breathing connection is arranged at a gas mask, a hood or a gas mask combined with a safety helmet.
17. A breathing product in accordance with claim 13, wherein said breathing gas source is a flexible breathing gas tube or a demand oxygen system.
18. A breathing product in accordance with claim 13, wherein the electric connection means transmits electric supply voltages and data.