Method and apparatus for processing video signal
AssigneeSamsung Electronics Co., Ltd.
InventorYoung-hun Choi
Life of this patent
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Abstract
Methods and apparatuses for processing a video signal are provided, in which a video signal for an interlaced scanning mode is received that has a first field and a second field. Further, a determination is performed as to whether the first field and the second field are inverted with respect to each other, and the first field and the second field are recovered if the first field and the second field are determined to be inverted with respect to each other. Thus, a video signal can be generated for a progressive scanning mode on the basis of the recovered first and second fields. Thus, an odd field can be correctly distinguished from an even field, which are included in a video signal for an interlaced scanning mode.
Claims11
A method of processing a video signal, the method comprising:
- receiving a video signal in an interlaced scanning mode format, which has a first field and a second field;
- determining whether the first field and the second field of the video signal in the interlaced scanning mode format which is received are inverted with respect to each other;
- recovering the first field and the second field if the first field and the second field are determined to be inverted with respect to each other;
- and
- generating a video signal in a progressive scanning mode format based on the first field and the second field which are recovered;
- wherein the determining whether the first field and the second field are inverted with respect to each other comprises determining whether numbers of back porches and front porches of the first field and the second field are equal to a preset number;
- wherein the numbers of front porches equals a number of horizontal synchronous signals of a video signal during a time beginning when a data enable signal changes from a first enable state to a second enable state and ending when a vertical synchronous signal changes from a first synch state to a second synch state, and
- wherein the numbers of back porches equals a number of horizontal synchronous signals of a video signal during a time beginning when the vertical synchronous signal changes from the second synch state to the first synch state and ending when the data enable signal changes from the second enable state to the first enable state.
An apparatus for processing a video signal, the apparatus comprising:
- a signal receiver which receives a video signal in an interlaced scanning mode format, which has a first field and a second field;
- and
- a de-interlacing processor which determines whether the first field and the second field of the video signal in the interlaced scanning mode format which is received are inverted with respect to each other, recovers the first field and the second field if the first field and the second field are determined to be inverted with respect to each other, and generates a video signal in a progressive scanning mode based on the first field and the second field which are recovered;
- wherein the de-interlacing processor determines whether the first field and the second field are inverted with respect to each other by determining whether numbers of back porches and front porches of the first field and the second field are equal to a preset number;
- wherein the numbers of front porches equals a number of horizontal synchronous signals of a video signal during a time beginning when a data enable signal changes from a first enable state to a second enable state and ending when a vertical synchronous signal changes from a first synch state to a second synch state, and
- wherein the numbers of back porches equals a number of horizontal synchronous signals of a video signal during a time beginning when the vertical synchronous signal changes from the second synch state to the first synch state and ending when the data enable signal changes from the second enable state to the first enable state.
Dependencies are inferred from the claim text.