JPH03139971A - Facsimile transmistter - Google Patents

Abstract

PURPOSE:To delete an optional position on an original to transmit the original by previously storing masking picture information as picture signal data similar to the original prior to the transmission of the original, and at the time of transmitting the original, converting black picture elements on the position indicating the masking picture information into white picture elements. CONSTITUTION:Prior to the transmission for an original, a control part 3 applies a picture signal storing instruction to a masking picture signal memory 5 to store the signal. At the time of transmitting the original, the control part 3 applies a picture signal storage instruction to a picture signal memory 4, and after completing the storage of the original in the memory 4, control signals 13, 14 and reading instructions are applied to respective memories 4, 5. A picture signal masking circuit 6 outputs the picture element data of a masking picture signal 16 as it is to a coding circuit 7 when the data are white in accordance with the instruction of a control signal 17, or when the data are black picture elements, converts the inputted picture signal 15 into white data and outputs a picture signal 18 to the circuit 7. Thus, unnecessary information in the transmitting original is deleted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile transmitter, and more particularly to a facsimile transmitter that deletes unnecessary information from a transmitted document.

[Conventional technology]

Conventionally, this type of facsimile apparatus has a so-called white mask function that detects a mark written on a document and converts the mark to white.

[Problem to be solved by the invention]

The conventional facsimile machine described above performs white masking by detecting the range to be white masked based on marks on the document, etc., and has the disadvantage that there are restrictions on the specified number of masking areas and that the masking can be performed in line units or rectangular ranges. .

[Means to solve the problem]

The facsimile transmitter of the present invention includes means for storing a first image signal read from a document, a means for storing a second image signal read from the document from which unnecessary portions of the document are deleted, and a means for storing a second image signal read from the document from which unnecessary parts of the document are deleted. and means for converting a black pixel of the first image signal into a white pixel using the second image signal and outputting the white pixel.

〔Example〕

Next, the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram of one embodiment of the present invention.

When reading the image information for masking before sending the original,
When an instruction to read the mask information is given to the operation section 2, the instruction is transmitted to the control section 3 by the operation signal 10, and the control signal 11 is transmitted to the control section 3.
A mask original is read by the original reading section 1 and output as an image signal 12 to the mask image signal memory 5 and the image signal memory 4. At this time, the control section 3 instructs the mask image signal memory 5 to store the image signal using the control signal 14. When transmitting a document, if the document to be transmitted is to be white-masked and transmitted according to the mask information stored in the mask image signal memory, when a mask instruction is given to the operation section 2, the operation signal 10 is transmitted.
The instruction is transmitted to the control section 3. Therefore, the control section 3 first uses a control signal 11 to instruct the document reading section 1 to read the transmitted document. Both read signals 12 are output to an image signal memory 4 and a mask image signal memory 5. At this time, the control section 3 instructs both signal memories 4 to store the image signal using the control signal 13, and stores the original.When the original has been stored in the image signal memory 4, the control section 3 sends the control signal 13 to both signal memories 4.
and control signals 1-4 to give read instructions to the image signal memory 4 and mask image signal memory 5, and output both signals 15 and mask image signal 16 to the image signal mask circuit 6 at the same time.

The image signal mask circuit 6 inputs the image signal 15 as it is when the pixel data of the mask image signal 16 is white, and uses the image signal 15 input at that time when the pixel data of the mask image signal 16 is black, according to the instruction of the control signal]7. It is replaced with its own data and output to the encoding circuit 7 as an image signal 18.

The encoding circuit 7 performs encoding according to the control signal 19 and outputs encoded data 20 to the modulation circuit 8.

The modulation circuit 8 performs modulation according to the control signal and outputs modulation data 22.
is output to the NCU 9, and the NCU 9 further transmits the data to the other receiver via the line 24 in accordance with the control signal 23.

〔Effect of the invention〕

As explained above, the present invention stores masking image information in advance as image signal data similar to the original before transmitting the original, and when transmitting the original, the first black pixel indicated in the masking image information is By converting to white, you can delete any part of the document and send it.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Original reading unit, 2... Operation unit, 3... Control unit, 1... Image signal memory, 5... Mask image signal memory, 6... Image signal mask circuit, 7... Encoding circuit, 8... Modulation circuit.

Claims (1)

[Claims] means for storing a first image signal read from a document; means for storing a second image signal read from the document from which unnecessary portions of the document are to be deleted; 2. A facsimile transmitter comprising means for converting the image signal into white pixels and outputting the white pixels.