JPS60112181A - Input device of signal - Google Patents

Abstract

PURPOSE:To obtain a device to be corrected in limiting input data to an optional area by correcting directly input data at a mask exterior and correcting input data according to table data at a mask interior, and writing input data in a memory device. CONSTITUTION:An output of a signal generator 1 is converted into digital data 200 by an AD convertor 2 and directly enters a selector 5, or the output is converted into converted digital data 300 by a conversion table 4 and enters the other input. When the data handled in a mask detector 3 is judged to be out of a mask, the selector 5 selects the digital data 200, transmits them to a picture memory 6, and writes them in the prescribed address. On the basis of mask information supplied by a CPU7, the mask detector 3 decides that data are in a mask, the selector 5 transmits the converted digital data 300 to the picture memory 6, and writes them in the prescribed address. Thus the device, which can carry out correction and conversion by limiting input data to an optional area, can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical field of J] The present invention relates to a signal input device that sequentially captures input (, F (input data)) into a storage device.

[Technical background of the invention and its problems]

Conventionally, this type of input device performs an operation of writing input data into a memory, whether the input data is analog data or digital data. When writing this input data to memory, conventional devices either write the raw data into memory without making any corrections or conversions to the input data, or if they add corrections or conversions, they write the input data over the entire input data. I went there.

Therefore, with conventional signal input devices, it has been impossible to limit only an arbitrary area of input data and perform correction, conversion, etc. only on this part of the input data. In view of the above-mentioned drawbacks, the object of the present invention is to provide a signal input device that can perform correction or conversion limited to an arbitrary area of input data.

[Summary of the invention]

The present invention includes a detection means for detecting whether the input data currently being handled is data within a preset certain area or data outside the area, and a predetermined correction to the input data based on stored table data. or selecting and outputting either unconverted input data or input data corrected by the converting means, based on the converting means that performs the conversion and the detection information from the detecting means; The above object is achieved by employing a signal input device equipped with a selection means.

[Embodiments of the invention]

An embodiment of the signal input device of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the signal input device of the present invention. An analog signal 100 output from a signal generator (for example, an ITV camera, etc.) 1 is input to an AD converter 2 and a mask detector 3. The AD converter 2 converts the input analog data 100 into digital data 20.
0 and sends it to one input of the conversion table 4 and selector 5. The conversion table 4 converts the input digital data based on the built-in table data, and sends the converted digital data 300 written as a result to the other input of the selector 5. The mask detector 3 generates address data 400 on the image memory 6 based on the input analog data 100, and sends this to the image memory 6. If the analog data input to the mask detector 3 is video data, address data 400 on the image memory 6 is generated based on the video synchronization signal. Further, the mask detector 3 is connected to a central processing unit (CP).
U) Take in the mask information (information for correcting a specific area of the input signal) output by 7, and based on this mask information, the input data 100 currently being handled is determined to be outside the mask (specific area of the input data). Selector 5
A switching signal for switching is sent to the selector 5. The selector 5 selects either the digital data 200 directly sent from the AD converter 2 or the converted digital data 300 converted by the conversion table 4 according to the switching signal from the mask detector 3, and converts this into an image. memory 6
Output to. Note that the table data contained in the conversion table 4 is loaded from the CPU 7. An example of this table data is as shown in Fig. 2, and it has a characteristic that when the table input data is a value of person, the table output data is converted into table output data B and an integer value according to the characteristic line C. ing.

Next, the operation of this embodiment will be explained. The analog data 100 output by the signal generator 1 becomes digital data 200 in the AD converter 2 and reaches one input of the selector 5 directly, or is converted by the conversion table 4 and becomes converted digital data 300 and is sent to the selector 5. The other input of 5 is reached.

When no correction is applied to the input data, that is, mask detector 3
If it is determined that the input data 100 currently being handled is outside the mask, the selector 5 selects the digital data 2.
00 is selected and sent to the image memory 6. Then, in the image memory 6, the digital data 200 is loaded into a predetermined address on the image memory 6 based on the address data 400 sent out by the mask detector 3. In this case, assuming that the analog data 100 is video data, and referring to FIG. It will be crowded.

Next, the mask detector 3 switches the selector 5 based on the mask information given from the CPU 7, and the selector 5 sends the converted digital data 300 converted using the conversion table 4 to the image memory 6. Then, in the image memory 6, the mask detector 3 also writes converted digital data 300 to a fixed address B based on the address data 400 sent out.To explain this case with reference to FIG. This means that the data corresponding to the scanning lines 11 constituting the area 9 (this corresponds to the mask) is written into the image memory 6. In this case, the screen displayed within the mask, that is, within the rectangular area 9, is written into the image memory 6. In other words, the selector 5 selects the converted digital data 300 only for the address corresponding to the area to be masked, and sends it to the image memory 6, thereby converting the data shown in FIG. A screen like this is constructed.If you wish to emphasize the outside of the rectangular area 9 on the screen shown in Figure 3,
The operation of the selector 5 may be reversed to select the converted digital data 300 for the portion corresponding to the address outside the mask and send it to the image memory 6.

According to this embodiment, by storing the converted digital signal selected by the selector 5 into the image memory 6 only for the area (mask) to be corrected, it is limited to an arbitrary area of the input signal. input borrowing can be corrected. Furthermore, since the input signal is corrected using table data stored in the conversion table 4, data correction and various conversions can be controlled using fixed numerical values. Furthermore, by changing the table data stored in the conversion table 4, the contents of input data correction and conversion can be easily changed. Furthermore, by changing the mask information output by the CPU 7 to the mask detector 3, the range and position of the mask can be arbitrarily selected. Furthermore, since the input signal is processed using a digital signal when correcting it, good repeatability can be maintained.

Note that the present invention can be applied to input sections of various devices in which input signals are not limited to video signals, such as drum scanners, flying spot scanners, and CCD sensors. or,
The present invention can also be applied to analog input devices that sample input data over time. However, in this case, the mask can be considered as a time period from a certain time to a certain time. Furthermore, the present invention can also be applied to a digital signal input device that inputs a digital signal string.

[Results of invention]

As described above, according to the signal input device of the present invention, means for correcting (converting) digitized input data based on table data is provided.1. By writing the input data directly to the outside of the mask and writing the correction data to the storage device inside the mask, it is possible to apply correction to an arbitrary area of the input data.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the signal input device of the present invention, FIG. 5 is a diagram showing an example of chill pull for shade emphasis loaded into the conversion table shown in FIG. The figure shows an example of a video screen in which the density of a masked portion is emphasized by the signal input device of this embodiment. 1... Signal generator, 2... Al) converter, 3...
Mask detector, 4... Weird central table, 5... Selector, 6... Image memory, 7... Central processing unit 6゜Representative: Patent attorney Noriyuki Chika (and 1 other person)

Claims (1)

[Claims] Checks whether the input data currently being handled is within a preset certain area or outside.
a detection means for performing a predetermined correction or conversion on the input data based on the stored table data;
and a selection means for selecting and outputting either unconverted input data or input data corrected by the conversion means based on the detection information from the detection means. A signal input device characterized by: