Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Reexamination Certificate
1996-01-25
2001-03-20
Garber, Wendy (Department: 2712)
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
C386S349000
Reexamination Certificate
active
06205287
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to an image forming apparatus and system, and more particularly, to an apparatus and system for forming color images.
2. Description of the Related Art
Apparatuses or systems for performing color printing from dynamic-image information, such as a video signal or the like, are known. A description will now be provided of a system for performing color printing by inputting a dynamic image from a VCR (video cassette recorder), serving as a dynamic-image-information reproducing apparatus, with reference to FIG.
1
.
In
FIG. 1
, a video signal reproduced by a VCR
1101
is input to an input terminal
1104
of a video printer
1102
, is then transmitted to an A/D (analog-to-digital) converter
1105
and to an output terminal
1108
, and is output to a monitor
1103
via the output terminal
1108
. The operator instructs the apparatus to accept an image of a desired picture frame by operating an operation unit
1110
when the desired picture frame has been reproduced while confirming reproduced images displayed on the monitor
1103
.
A control unit
1111
which has received the instruction to accept the image from the operation unit
1110
outputs a control signal to a memory control circuit
1109
, so that an input video signal representing one picture frame converted into a digital signal by the A/D converter
1005
is stored in a memory
1106
.
Upon completion of storage of the video signal in the memory
1106
, the operator instructs printing of the image by operating the operation unit
1110
.
The control unit
1111
which has received the printing instruction from the operation unit
1110
controls the memory control circuit
1109
and a printing unit
1112
, so that the video signal representing one picture frame stored in the memory
1106
is read out thereof, is converted into an analog signal by a D/A (digital-to-analog) converter
1107
, and is output to the printing unit
1112
, which outputs a color print.
In such a video printer, however, it is very difficult to complete the processing of extracting a picture frame to be printed from a video signal, which is a dynamic image signal, by a single operation with a good timing.
In addition, it is difficult to exactly reproduce the luminance or the color of a portion of a picture frame confirmed on the monitor in an obtained print.
SUMMARY OF THE INVENTION
The present invention has been made in consideration of the above-described problems.
It is an object of the present invention to provide an image forming apparatus and system which can easily and exactly perform processing of extracting a desired picture frame from dynamic images, and which can easily adjust the picture quality by easily comparing and confirming the state of a picture frame displayed on a monitor and the state of a picture frame in an actual print.
According to one aspect, the present invention which achieves the above-described objective relates to an image forming apparatus comprising supply means, memory means, extraction means, instruction means, and memory control means. The supply means supplies moving image data obtained by selectively encoding an original image signal using intraframe encoding and interframe encoding. The memory means stores the moving image data supplied by the supply means. The extraction means extracts image data from the moving image data supplied by the supply means which has been intraframe encoded. The instruction means instructs the memory means to store the extracted image data. The memory control means controls the memory means so as to store the image data extracted by the extraction means in a predetermined time period in response to an instruction from the instruction means.
According to another aspect, the present invention which achieves the above-described objective comprises an image forming apparatus comprising memory means, processing means, recording means, and control means. The memory means stores moving image data representing a plurality of picture frames encoded using intraframe encoding within the moving image data which has been selectively encoded using intraframe encoding and interframe encoding. The processing means performs predetermined processing of the moving image data read out from the memory means. The recording means records an image represented by the moving image data output from the processing means on a recording medium. The control means controls the processing means and the recording means so as to record a plurality of images represented by the moving image data processed by the processing means with different parameter values.
According to still another aspect, the present invention which achieves this objective relates to an image forming system comprising a reproducing apparatus, an interface apparatus, and an image forming apparatus. The reproducing apparatus reproduces moving image data selectively encoded using intraframe encoding and interframe encoding from a recording medium.
The interface apparatus comprises means for inputting moving image data reproduced by the reproducing apparatus, memory means for storing the input moving image data, extraction means for extracting image data from the input moving image data which has been intraframe encoded, instruction means for instructing the memory means to store a predetermined picture frame of the extracted moving image data, and memory control means for controlling the memory means so as to store image data representing a plurality of picture frames extracted by the extraction means in a predetermined time period including the predetermined picture frame in the memory means in response to an instruction from the instruction means.
The image forming apparatus comprises means for inputting the moving image data read out from the memory means, processing means for performing predetermined processing of the moving image data read out from the memory means, recording means for recording an image represented by the moving image data output from the processing means on a recording medium, and control means for controlling the processing means and the recording means so as to record a plurality of images represented by the moving image data representing the plurality of picture frames stored in the memory means on one recording medium, and to process the plurality of respective images with different parameter values.
According to still another aspect, the present invention which achieves this objective relates to an image processing apparatus comprising input means, memory means, extraction means, instruction means, memory control means, decoding means, and output means. The input means inputs moving image data obtained by selectively encoding an original image signal selectively using intraframe encoding and interframe encoding. The memory means stores the moving image data. The extraction means extracts intraframe encoded image data from the input moving image data. The instruction means instructs the memory means to store the extracted intraframe encoded data. The memory control means controls the memory means so as to store the intraframe encoded image data extracted by the extraction means in a predetermined time period in response to an instruction from the instruction means. The decoding means decodes the extracted intraframe encoded image data read out from the memory means. The output means outputs the decoded image data decoded by the decoding means.
The foregoing and other objects, advantages and features of the present invention will become more apparent from the following detailed description of the preferred embodiments taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 5010498 (1991-04-01), Miyata
patent: 5353062 (1994-10-01), Maeda
patent: 5440345 (1995-08-01), Shimoda
patent: 5485554 (1996-01-01), Lowitz et al.
patent: 5500743 (1996-03-01), Sakaegi et al.
patent: 5727113 (1998-03-01), Shimoda
patent: 5864647 (1999-01-01), Takeuchi et al.
Abe Yoshinori
Suzuki Atsushi
Takahashi Koji
Yagisawa Toshihiro
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Garber Wendy
Moe Aung S.
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