Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Reexamination Certificate
1994-02-04
2001-09-25
Lee, Cheukfan (Department: 2622)
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
C358S444000, C358S404000
Reexamination Certificate
active
06295139
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an image data processing apparatus for converting an optical image taken by a camera into digital image data, and recording and reproducing on a recording medium, and more particularly to the one easy to extend the system and easy to achieve the multiple functions so as to sufficiently satisfy wide requirements of users.
2. Description of the Related Art
As known well, in an ordinary camera, the taken optical image is focused on a silver salt film, and therefore the taken image cannot be observed unless the film is developed by chemical processing.
Recently, by contrast, an electrophotographic system is developed and spread widely on market, which does not require bothersome chemical processing because the taken optical image is converted into an electrical image data, and the image according to this image data is displayed by a television receiver.
As an example of such an electrophotographic system, a still picture recording and reproducing system is known. In this still picture recording and reproducing system, tape, disc and drum composed of magnetic material are installed in a camera main body as a recording medium in a form of a cassette or cartridge, and image data is recorded. Afterwards, the recording medium is taken out of the camera body, and installed in a reproducing unit, and the still picture is displayed in a television receiver connected to the reproducing unit.
In the still picture recording and reproducing system of this sort, for example, by using a memory card incorporating a semiconductor memory as the recording medium, it is attempted to record at higher density and reduce the weight and size, but actually it is in the process of development at the present, and there are many points to be improved.
That is, the image data processing apparatus for converting an optical image taken by a camera into digital image data, and recording and reproducing on a recording medium is not a technically completed system yet, and therefore it is keenly demanded to promote the multiple-purpose advantages more effectively, by making the system easy to extend and easy to achieve in the multiple functions so as to sufficiently satisfy the versatile requests of users.
SUMMARY OF THE INVENTION
The invention is devised in the light of the above background, and its primary object is hence to present an image data processing apparatus of an extreme excellent so as to sufficiently cope with wide requests of users, making it easy to extend the system and easy to achieve in the multiple functions, thereby effectively promoting the multi-purpose principle.
According to one aspect of the present invention, there is provided an image data processing apparatus comprising a pickup unit for converting a taken optical image into electric data by using a solid pickup element, and a signal processing unit for processing the data delivered from this pickup unit to record into a memory, both being composed independently, wherein the pickup unit is detachable from the signal processing unit, and plural types of pickup unit are prepared, differing in the number of solid pickup elements contained therein, so that a desired pickup unit is selectively attached to the signal processing unit to take photographs. In such a constitution, the user has only to exchange the pickup unit as required, which is advantageous, economically.
According to another aspect of the present invention, there is provided an image data processing apparatus comprising a pickup unit for converting a taken optical image electric data by using a solid pickup element, and a signal processing unit for processing the data delivered from this pickup unit and recording into a memory, both being composed independently, wherein the pickup unit is detachable from the signal processing unit, and a finder is disposed in the pickup unit. In such a constitution, the construction of the optical path in the pickup unit is simplified, and down sizing is promoted.
According to the image data processing apparatus of the invention for converting a taken optical image into digital image data and compressing the data to record in a memory, there is provided means for calculating the activity of the entire screen portion of the digital image data and automatically setting the data compression rate. In such a constitution, the compression rate is automatically determined in a range not to cause an extremely deteriorated picture, and the recording capacity of the memory can be effectively utilized.
In a different aspect of the invention, there is provided an image data processing apparatus for converting a taken optical image into digital image data through a solid pickup element and compressing the data to record in a memory comprising first means for adding the fixed noise components contained in the digital image data for the portion of k exposures, second means for summing up the digital image data obtained from k exposures, and third means for subtracting the output data of the first means from the output data of the second means so as to obtain the multiple exposure images for k exposures eliminating the fixed noise. In such a constitution, the sensitivity may be raised when taking a dark place, without elongating the exposure time, so that it is not necessary to alter the driving method of the solid pickup element.
Furthermore, according to the image data processing apparatus of the invention for converting a taken optical image into digital image data to record in a memory, comprising a continuous filming function, wherein in the photographic state by continuous filming function, the digital image data corresponding to the optical image of the first exposure is stored in the memory, and the differential portion between the digital image data corresponding to the optical image taken after the second exposure and the digital image data of the first exposure stored in the memory is recorded in the memory by first means, and every time a specified number of exposures is taken in the photographic state by the first means, the digital image recorded in the memory is updated by second means. In this construction, the recording capacity of the memory may be saved in continuous filming mode, and deterioration of picture quality may be prevented.
According to a further different aspect of the image data processing apparatus of the invention, the taken optical image is converted into digital image data, and is recorded in the recording medium in predetermined units, and the collected sound is converted into digital sound data and is recorded in the recording medium in the predetermined units, which moreover comprises means for converting the transmission speed of the digital sound data to a rate higher than the standard speed, and recording on the time axis in the predetermined units intermittently in the recording medium. In such a constitution, when photographed while recording sound, the image data can be recorded among the sound data, and the sound and image can be synchronized when reproducing.
According to the image data processing apparatus of the invention, still more, for converting a taken optical image into digital image data and recording in a memory, an option area for writing by external operation is provided in the recording area of digital image data of the memory, and code data for automatically controlling the photographic operation is recorded in this option area. In such a constitution, the user can freely set the desired photographic action individually.
A different aspect to the invention relates to an image data processing apparatus comprising a main body for converting a taken optical image into digital image data, and a memory for recording the digital image data obtained from the main body, wherein a built-in strobe is disposed in the main body and a connection part for extending an external strobe is provided, and control means for controlling both of the built-in strobe and external strobe depending on the photographic condition is insta
Hisatomi Shuichi
Izawa Fumio
Kakizaki Mikio
Mimura Hideki
Ono Tomoko
Kabushiki Kaisha Toshiba
Lee Cheukfan
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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