Data interfacing apparatus and method of print head chip
AssigneeSamsung Electronics Co., Ltd.
InventorSeong-nam Jeon
Life of this patent
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Abstract
A data interfacing apparatus and method of a print head chip are provided. The data interfacing apparatus includes a drive module to output a low-speed signal with a slow transmission speed and a high-speed signal requiring a fast transmission speed, a connection cable transmitting the low-speed signal and the high-speed signal, and a print head chip to operate in response to the low-speed signal and the high-speed signal transmitted through the connection cable, wherein the drive module includes multiplexers to perform a switching operation so that the connection cable is earthed to a ground in response to the high-speed signal, and wherein the print head chip includes de-multiplexers to perform a switching operation in response to the operation of the multiplexers.
Claims26
A data interfacing apparatus of a print head chip, comprising:
- a drive module to output a low-speed signal with a slow transmission speed and a high-speed signal requiring a fast transmission speed;
- a connection cable to transmit the low-speed signal and the high-speed signal;
- and
- a print head chip to operate in response to the low-speed signal and the high-speed signal transmitted through the connection cable,
- wherein the drive module comprises multiplexers to perform a switching operation so that the connection cable is earthed to a ground in response to the high-speed signal, and
- wherein the print head chip comprises de-multiplexers to perform a switching operation in response to the operation of the multiplexers.
A data interfacing method of a print head chip comprising a drive module to output a low-speed signal with a slow transmission speed and a high-speed signal requiring a fast transmission speed, a connection cable to transmit the low-speed signal and the high-speed signal, and a print head chip to operate in response to the low-speed signal and the high-speed signal transmitted through the connection cable, the method comprising:
- determining whether the low-speed signal or the high-speed signal is output;
- and
- performing a switching operation if it is determined that the high-speed signal is output, so that the connection cable is earthed to a ground.
A computer readable recording medium having embodied thereon a computer program to execute a method of a print head chip comprising a drive module to output a low-speed signal with a slow transmission speed and a high-speed signal requiring a fast transmission speed, a connection cable to transmit the low-speed signal and the high-speed signal, and a print head chip to operate in response to the low-speed signal and the high-speed signal transmitted through the connection cable, wherein the method comprises:
- determining whether the low-speed signal or the high-speed signal is output;
- and
- performing a switching operation if it is determined that the high-speed signal is output, so that the connection cable is earthed to a ground.
A connection cable usable with a data interfacing apparatus having a drive module and a print head chip, comprising:
- a clock trace to transmit a clock signal as a high speed signal;
- a data trace to transmit a data signal as the high speed signal;
- a load trace to transmit a local signal as the high speed signal;
- a power trace disposed between the clock trace and the data trace to transmit a power signal as a lower speed signal;
- a multiplexed trace disposed between the data trace and a priority of the load trace to selectively transmit a ground signal and a temperature signal as the low speed signal;
- a second multiplexed trace disposed the other portion of the load trace to selectively transmit a ground signal and a second temperature signal as the low speed signal;
- and
- a control signal trance to transmit a control signal representing one of transmitters of the ground and temperature signals of the multiplexed traces.
A data interfacing apparatus, comprising:
- a drive module having a port to output a high speed signal, having another port to output a ground signal according to a first state of the high speed signal of the port and to output a low speed signal according to a second state of the high speed signal of the port, such that a return current path is formed, and having a control port to output a control signal indicating one of the ground signal and the low speed signal of the another port.
A data interfacing apparatus, comprising:
- a print head chip having a port to receive a high speed signal, having another port to receive a ground signal according to a first state of the high speed signal and to receive a low speed signal according to a second state of the high speed signal of the port, such that a return current path is formed, and having a control port to receive a control signal indicating one of the ground signal and the low speed signal of another port.
A data interfacing apparatus, comprising:
- a drive module having a plurality ports to generate a high speed signal, and to selectively generate a ground signal and a low speed signal to form a return current path with the high speed signal;
- a print head chip having a plurality ports to receive the high speed signal and one of the ground signal and the low speed signal from respectively ones of the plurality ports;
- and
- a cable having a plurality of traces to connect corresponding ones of the plurality of ports of the drive module and the print head chip.
A data interfacing apparatus, comprising:
- a drive module to output a low-speed signal with a slow transmission speed and a high-speed signal with a fast transmission speed wherein a first switching operation is performed in response to the high-speed signal;
- a connection cable to transmit the low-speed signal and the high-speed signal wherein the connection cable is earthed to a ground during the first switching operation;
- and
- a print head chip to perform a second switching operation in response to the first switching operation.
A data interfacing method of a print head chip, the method comprising:
- outputting a low-speed signal with a slow transmission speed;
- outputting a high-speed signal with a fast transmission speed;
- performing a first switching operation in response to the high-speed signal;
- transmitting the low-speed signal and the high-speed signal through a connection cable, wherein the connection cable is earthed to a ground during the first switching operation;
- and
- performing a second switching operation in response to the first switching operation.
A computer readable recording medium having embodied thereon a computer program to execute a method of a print head chip, the method comprising:
- outputting a low-speed signal with a slow transmission speed;
- outputting a high-speed signal with a fast transmission speed;
- performing a first switching operation in response to the high-speed signal;
- transmitting the low-speed signal and the high-speed signal through a connection cable, wherein the connection cable is earthed to a ground during the first switching operation;
- and
- performing a second switching operation in response to the first switching operation.
Dependencies are inferred from the claim text.