Digital/analog converter circuit, source driver, display apparatus, electronic apparatus, and method of driving a digital/analog converter circuit
AssigneeSony Corporation
InventorYusuke Onoyama
Life of this patent
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Abstract
A digital/analog converter circuit includes: a decoding unit that performs decoding processing on a bit signal in a predetermined part of a digital signal; and a selector circuit that selects and outputs a voltage depending on an output of the decoding unit, in which a switching device is disposed on at least one of inside of the decoding unit and an output unit side of the decoding unit, the switching device being controlled by a control signal different from the hit signal as a target for the decoding processing.
Claims15
A digital/analog converter circuit, comprising:
- a decoding unit that performs decoding processing on a bit signal in a predetermined part of a digital signal;
- and
- a selector circuit that selects and outputs a voltage depending on an output of the decoding unit, wherein
- a switching device is disposed on at least one of inside of the decoding unit and an output unit side of the decoding unit, the switching device being controlled by a control signal different from the bit signal as a target for the decoding processing.
A source driver that is used for supplying a voltage corresponding to a gradation value given as a digital signal to a data line of a display unit, the source driver comprising:
- a digital/analog converter circuit that selects and outputs the voltage corresponding to the gradation value, the digital/analog converter circuit including
- a decoding unit that performs decoding processing on a bit signal in a predetermined part of a digital signal, and
- a selector circuit that selects and outputs a voltage depending on an output of the decoding unit, wherein
- a switching device is disposed on at least one of inside of the decoding unit and an output unit side of the decoding unit, the switching device being controlled by a control signal different from the bit signal as a target for the decoding processing.
A display apparatus, comprising:
- a display unit;
- and
- a source driver that is used for supplying a voltage corresponding to a gradation value given as a digital signal to a data line of a display unit, the source driver including
- a digital/analog converter circuit that selects and outputs the voltage corresponding to the gradation value, the digital/analog converter circuit including
- a decoding unit that performs decoding processing on a bit signal in a predetermined part of a digital signal, and
- a selector circuit that selects and outputs a voltage depending on an output of the decoding unit, wherein
- a switching device is disposed on at least one of inside of the decoding unit and an output unit side of the decoding unit, the switching device being controlled by a control signal different from the bit signal as a target for the decoding processing.
An electronic apparatus, comprising:
- a display apparatus including
- a display unit, and
- a source driver that is used for supplying a voltage corresponding to a gradation value given as a digital signal to a data line of a display unit, the source driver including
- a digital/analog converter circuit that selects and outputs the voltage corresponding to the gradation value, the digital/analog converter circuit including
- a decoding unit that performs decoding processing on a bit signal in a predetermined part of a digital signal, and
- a selector circuit that selects and outputs a voltage depending on an output of the decoding unit, wherein
- a switching device is disposed on at least one of inside of the decoding unit and an output unit side of the decoding unit, the switching device being controlled by a control signal different from the bit signal as a target for the decoding processing.
A method of driving a digital/analog converter circuit including a decoding unit including a NAND gate that performs decoding processing on a bit signal in a predetermined part of a digital signal, and a selector circuit that selects and outputs a voltage depending on an output of the decoding unit, the method comprising:
- performing, when an output of the NAND gate transits, control of blocking a path between a power supply voltage side in an output circuit of the NAND gate and a ground voltage side.
A method of driving a digital/analog converter circuit including a decoding unit that performs decoding processing on a bit signal in a predetermined part of a digital signal, and a selector circuit that selects and outputs a voltage depending on an output of the decoding unit, the method comprising:
- performing, when the output of the decoding unit transits, control of short-circuiting a corresponding control line of the selector circuit while an output unit of the decoding unit and the control line of the selector circuit are disconnected.
A method of driving a digital/analog converter circuit including a decoding unit including a NAND gate that performs decoding processing on a bit signal in a predetermined part of a digital signal, and a selector circuit that selects and outputs a voltage depending on an output of the decoding unit, the method comprising:
- performing, when an output of the NAND gate transits, control of blocking a path between a power supply voltage side in an output circuit of the NAND gate and a ground voltage side, and control of short-circuiting a corresponding control line of the selector circuit while an output unit of the decoding unit and the control line of the selector circuit are disconnected.
Dependencies are inferred from the claim text.