JPH0468877A - Scanner device - Google Patents

Abstract

PURPOSE:To realize a video signal to directly input to highfidelity television by storing a digitally processed picture data in a frame memory, converting the data to an analog data and adding a synchronizing signal. CONSTITUTION:The picture of a film or a photograph, etc., is read by an image sensor 1, and various signal processings are executed at a digital signal processing part 3. At such a time, the picture is processed to be stored in a frame memory 4 by the prescribed operation of the scanner device, and this processed data is stored in the frame memory 4. After all the data for one film or one photograph are stored in the frame memory 4, the data in the frame memory 4 are read out at prescribed timing by the prescribed operation of the scanner device and converted to the analog data by a D/A converter 6, and the synchronizing signal of television is added to this analog signal. Thus, the analog signal can be directly inputted to the video signal such as the high-fidelity television, for example.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to a scanner (scanner) that reads images from films, photographs, etc., and outputs the images digitally as data.
The present invention relates to a scanner device, and more specifically to a scanner device that converts the read image into a video signal such as a high-definition video signal and enables analog output.

[Conventional Technique v#] Conventionally, this type of scanner device, as shown in FIG. It is composed of an A/D converter 2 that performs conversion, and a digital signal processing section 3 that performs various signal processing on this data and outputs the processed data as a digital signal.

By transmitting the signal output from the scanner device to a relay personal computer or the like, the image read by the scanner device can be displayed on the screen of a monitor connected to the personal computer or the like.

[Problems to be Solved by the Invention] However, since the above-mentioned scanner device is used as an image input device for a personal computer or the like, only digital output is possible, and reading of images, etc. is performed by line scanning. Due to its slow scanning speed, direct analog output was not possible.

Therefore, it was not possible to view film or photographic images read by a scanner device unless a burner computer or the like was used as a relay.

This invention was made in view of the above problems, and its purpose is to output images read by an image sensor as a video signal (analog signal) that can be directly input to high-definition, etc., and to make it possible to output films, photographs, etc. An object of the present invention is to provide a scanner device capable of displaying images more clearly.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes at least an image sensor that reads an image, an AID converter that converts the read image signal into a digital signal, and an AID converter that converts the read image signal into a digital signal. In a scanner device equipped with a signal processing unit that processes various signals and outputs the processed data digitally.

A frame memory that stores data processed by the above signal processing, a control unit (memory control unit) that controls writing and reading of this frame memory, and a D/A that converts data read from the frame memory into an analog signal. It includes a converter and a synchronization generator that generates a television synchronization signal to be added to the converted analog signal, converts the data accumulated in the frame memory into an analog signal, and adds the synchronization signal to the analog signal. The gist is that a video signal is obtained by adding .

[Operation] With the above configuration, film, photographs, etc. are read by the image sensor, and this read image is subjected to various digital processing, but this processed image (data) is stored in the frame memory. .

In this way, the data stored in the frame weight is read out by a predetermined operation and converted to analog by the D/A converter, and the synchronization signal generated by the synchronization generator is added to the analog signal. Ru. Therefore, the synchronization signal generated by the analog signal and its addition result in a video signal that can be directly input to a high-definition system.

[Example] Hereinafter, an embodiment of the present invention will be described based on FIG.

In the figure, the same parts as in FIG. 2 are denoted by the same reference numerals, and redundant explanation will be omitted.

In FIG. 1, a scanner device includes a frame memory 4 that stores data processed by a digital signal processing section 3, a memory control section 5 that controls writing and reading of this frame memory 4, and a frame memory 4 that stores data processed by a digital signal processing section 3. A D/A converter 6 that converts the data read from the memory 4 into analog, adds a television synchronization signal (for example, a high-definition synchronization signal) to this analog signal, and outputs it as a video signal, and the synchronization signal. An HD-TV synchronization generating section 7 is provided which generates an HD-TV synchronization generator.

In the scanner device having the above configuration, images of films, photographs, etc. are read by the image sensor 1 in the same way as before.
The read image data is subjected to various signal processing in a digital signal processing section 3. At this time, the image data is processed so as to be stored in the frame memory 4 by a predetermined operation of the scanner device, and this processed data is stored in the frame memory 4. Then, after the image of one sheet of the film or photograph is read and, for example, all of the data of that image is stored in the frame memory 4, further by a predetermined operation of the scanner device.

The data in the frame memory 4 is read out at a predetermined timing. This read data is converted into analog data by the D/A converter 6.

A television synchronization signal is added to this analog signal. As a result, the analog signal can be directly input to a video signal, for example, a high-definition video signal.

Note that when reading images from films, photographs, etc., using the image sensor 1, the resolution is good if the image is read in three colors, R, B, and G, and the data of the read image can be converted to a high-definition video signal. If so, the conversion process becomes easier.

As described above, scanner devices have an analog output function that converts images such as films and photographs into television (high-definition) video signals, so the scanned film and photographs can be directly transmitted to television (high-definition). ), etc., and it becomes possible to display the images of the film, photograph, etc. clearly on the high-definition screen.

In addition, since the digital signal processing unit 2 is capable of various signal processing, it is possible to perform various image processing compared to, for example, a COD camera, so the range of applications can be expanded, and the range of use can be expanded. can be achieved.

[Effects of the Invention] As explained above, according to the scanner device of the present invention, images read by an image sensor are stored in a frame memory, this stored data is converted into analog data, and the synchronization signal of a television is By adding , a video signal that can be input directly to a television (high-definition) is obtained, making it possible to input analog 8 outputs, so images read by an image scanner can be input directly to a high-definition TV, etc., without relaying with a personal computer etc. It is possible to display film and photographic images in high definition, and it is also possible to display images that are clearer than when relayed through a personal computer or the like.

[Brief explanation of the drawing]

FIG. 1 is a schematic block diagram of a scanner device showing an embodiment of the present invention, and FIG. 2 is a schematic block diagram of a conventional scanner device. In the figure, 1 is an image sensor and 2 is an A/D converter. 3 is a digital signal processing section, 4 is a frame memory, 5 is a memory control section, 6 is a D/A converter, and 7 is an HD-
This is a TV synchronization generator. Patent applicant: Fujitsu General Co., Ltd. Agent: Patent attorney: Takuya Ohara

Claims (1)

[Claims] (1) An image sensor that reads at least an image;
A scanner device comprising: an A/D conversion means for converting the read image signal into a digital signal; and a signal processing means for performing various signal processing on the converted digital data and outputting the processed data as a digital signal. a frame memory for storing processed data; a control means for controlling writing and reading of the frame memory; a D/A conversion means for converting the data read from the frame memory into an analog signal; and a synchronization generating means for generating a television synchronization signal to be added to an analog signal, converting the data accumulated in the frame memory into an analog signal, and adding the synchronization signal to the analog signal to obtain a video signal. A scanner device characterized by: