Image forming apparatus and method of controlling the same
AssigneeSamsung Electronics Co., Ltd.
InventorSeung Cheol Yoo
Life of this patent
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Abstract
An image forming apparatus includes a hyper print video controller (HPVC) to generate video data from input data, an engine controller to compensate for a dot offset of the video data and to output the dot offset-compensated video data, and a laser scanning unit to perform a print operation according to the dot offset compensated video data. Therefore, HPVC size is reduced so that chip size can be reduced. This reduction in size accordingly reduces power consumption, and enhances chip efficiency.
Claims18
An image forming apparatus, comprising:
- a hyper print video controller (HPVC) to generate video data from input data according to a first synchronous signal;
- an engine controller to compensate for a dot offset of the video data and to output the dot offset-compensated video data;
- and
- a laser scanning unit to perform a print operation and to output a second synchronous signal to the HPVC according to the dot offset-compensated video data, the second synchronous signal replacing the first synchronous signal.
A method of controlling an image forming apparatus, the method comprising:
- generating video data from input data in a hyper print video controller (HPVC) according to a first synchronous signal and outputting the video data;
- compensating for a dot offset of the video data in an engine controller, and outputting the dot offset-compensated video data;
- performing a printing operation through a laser scanning unit, according to the dot offset-compensated video data;
- and
- outputting a second synchronous signal to the HPVC according to the dot offset-compensated video data, the second synchronous signal replacing the first synchronous signal.
An image forming apparatus, comprising:
- a hyper print video controller (HPVC) to generate video data from input data according to a first signal;
- an engine controller to compensate for a dot offset of the video data and to output the dot offset-compensated video data;
- and
- a laser scanning unit to perform a print operation and to output a second synchronous signal to the HPVC according to the dot offset-compensated video data, the second synchronous signal replacing the first synchronous signal,
- wherein the engine controller includes a dot compensating unit to delay periods of a video clock of a ring oscillator providing a reference video clock to the engine controller by a number of dots, and to compensate for the dot offset, and
- the dot compensating unit delays N periods of the video clock and compensates for N dot delays.
An image forming apparatus, comprising:
- a hyper print video controller (HPVC) to receive input data and a clock signal, and to generate video data from the input data according to a first synchronous signal;
- and
- an engine controller to provide dot compensation for a dot offset of the video data and to output the dot offset-compensated video data,
- wherein the dot compensation is performed without a dot compensating buffer and a second synchronous signal is generated according to the dot offset-compensated video data to replace the first synchronous signal.
A dot compensation method of an image forming apparatus, the method comprising:
- receiving input data and a clock signal,
- generating video data from the input data according to a first synchronous signal;
- providing dot compensation for a dot offset of the video data by delaying the video clock signal received by a hyper print video controller (HPVC) corresponding to a number of dots for which to compensate;
- outputting the dot offset-compensated video data;
- and
- outputting a second synchronous signal to the HPVC according to the dot offset-compensated video data, the second synchronous signal replacing the first synchronous signal.
A non-transitory computer-readable recording medium having embodied thereon a computer program to execute a method, wherein the method comprises:
- receiving input data and a clock signal,
- generating video data from the input data according to a first synchronous signal;
- providing dot compensation for a dot offset of the video data by delaying the video clock signal received by a hyper print video controller (HPVC) corresponding to a number of dots for which to compensate;
- outputting the dot offset-compensated video data;
- and
- outputting a second synchronous signal to the HPVC according to the dot offset-compensated video data, the second synchronous signal replacing the first synchronous signal.
Dependencies are inferred from the claim text.