Text processing apparatus

Claim 2

A text processing apparatus comprising: external storage means for storing a text data, which is detachable from a main body of said text processing apparatus; internal storage means for storing a text data, fixed in the main body of said text processing apparatus; display means for displaying the text data; editing processing means for transferring the text data stored in said external storage means to said internal storage means and for performing an editing process on the text data transferred to said internal storage means; means for causing said display means to display the entire text data transferred from said external storage means to said internal storage means and edited by said editing processing means and stored in said internal storage means; means for comparing the edited text data with the text data which has already ben stored in said external storage means; means for causing said display means to distinguishably display in the entire edited text data displayed on said display means the portion of the edited text data which is different from the text data stored in said external storage means, in accordance with the comparison made by said comparing means.

Claim 3

A text processing apparatus according to claim 1, wherein said display means displays the portion of the edited text data which is different from the text data stored in said external storage means in one of black and white, and wherein said display means is adapted to display other text data in the other of black and white.

Claim 4

A text processing apparatus according to claim 1, further comprising input means for inputting the text data into said external and internal storage means.

Claim 5

A text processing apparatus according to claim 1, wherein said external and internal storage means have the same memory structure and the same memory capacity.

Claim 6

A text processing apparatus comprising: input means for inputting text data; internal storage means, fixed to the inside of a main body of said text processing apparatus, for temporarily storing the text data input from said input means; external storage means for storing the text data stored in said internal storage means, which is detachable from the main body of said apparatus; text processing means for transferring the text data stored in said external storage means to said internal storage means, and for enabling a new text data to be added to the stored text data from said input means or for enabling a part of the stored text data to be changed by use of the new text data; display means for displaying the text data; means for causing said display means to display the text data to which the new text data was added by said text processing means or a part of which was changed by the new text data and which was stored in said internal storage means; means for comparing the text data to which the new text data was added by said text processing means or a part of which was changed by the new text data and which was stored in said internal storage means with the text data stored in said external storage means; and means for causing said display means to distinguishably display in the displayed text area the added or changed new text data in accordance with the comparison made by said comparing means.

Claim 7

A text processing apparatus comprising: input means for inputting text data; internal storage means, fixed to the inside of a main body of said text processing apparatus, for temporarily storing the text data input from said input means; external storage means for storing the text data stored in said internal storage means, which is detachable from the main body of said apparatus; text processing means for transferring the text data stored in said external storage means to said internal storage means, and for enabling a new text data to be added to the stored text data from said input means or for enabling a part of the stored text data to be changed by use of the new text data; display means for displaying the text data; means for causing said display means to display the text data to which the new text data was added by said text processing means or a part of which was changed by the new text data and which was stored in said internal storage means; means for comparing the text data to which the new text data was added by said text processing means or a part of which was changed by the new text data and which was stored in said internal storage means with the text data stored in said external storage means; and means for causing said display means to distinguishably display in the displayed text area the added or changed new text data in accordance with the comparison made by said comparing means.

Claim 8

A text processing apparatus according to claim 5, wherein said display means displays text data in one of black and white, and said display means displays the new text data which was added or changed by said text processing means in the other of black and white.

Claim 9

A text processing apparatus according to claim 5, wherein said internal and external storage means have the same memory structure.

Claim 10

A text processing apparatus comprising: first storage means for storing text data; editing processing means for editing and processing text data identical to the text data stored in said first storage means; second storage means for storing the text data which was edited and processed by said editing processing means; display means for displaying the text data stored in said second storage means; means for comparing the text data stored in said first storage means with the text data stored in said second storage means; and means for causing said display means to display the edited and processed text data on said display means and for causing said display means to distinguishably display in the displayed text data that portion of the edited and processed text which is different from the text stored in said first storage means in accordance with the comparison made by said comparing means.

Claim 11

A text processing apparatus comprising: first storage means for storing text data; editing processing means for editing and processing text data identical to the text data stored in said first storage means; second storage means for storing the text data which was edited and processed by said editing processing means; display means for displaying the text data stored in said second storage means; means for comparing the text data stored in said first storage means with the text data stored in said second storage means; and means for causing said display means to display the edited and processed text data on said display means and for causing said display means to distinguishably display in the displayed text data that portion of the edited and processed text which is different from the text stored in said first storage means in accordance with the comparison made by said comparing means.

Claim 12

A text processing apparatus according to claim 8, wherein said display means displays text data in one of black and white, and wherein said display means displays the portion of the text data which was edited and processed by said editing processing means in the other of black and white.

Claim 13

A text processing apparatus according to claim 8, wherein said first and second storage means have the same memory structure.

Claim 14

A text processing apparatus comprising: external storage means for storing a plurality of text data, said external storage means being detachable from a main body of said text processing apparatus, wherein the main body of said text processing apparatus can read and edit one or more of the plurality of text data stored in said external storage means; and display means for displaying the plurality of text data stored in said external storage means wherein the display condition of one or more of the plurality of text data edited by an editing process is distinguishable from that of unedited one or more of the plurality of text data.

Claim 15

A text processing apparatus comprising: external storage means for storing a plurality of text data, said external storage means being detachable from a main body of said text processing apparatus, wherein the main body of said text processing apparatus can read and edit one or more of the plurality of text data stored in said external storage means; and display means for displaying the plurality of text data stored in said external storage means wherein the display condition of one or more of the plurality of text data edited by an editing process is distinguishable from that of unedited one or more of the plurality of text data.

Claim 16

A text processing apparatus according to claim 11, wherein said display means displays the one or more text data edited in said editing process in black against a white background or in white against a black background.

Claim 17

A text processing apparatus according to claim 11, wherein said external storage means comprises a floppy disc.

Claim 18

A text processing apparatus according to claim 11, wherein said external storage means comprises an optical card.

Claim 19

A text processing method comprising the steps of: storing a plurality of text data in an external storage means detachable from a main body of a text processing apparatus, wherein the main body of said text processing apparatus can read and edit one or more of the plurality of text data stored in the external storage means; and displaying the plurality of text data stored in the external storage means, wherein the display condition of one or more of the plurality of text data edited by an editing process is distinguishable from that of unedited one or more of the plurality of text data.

Claim 20

A text processing method comprising the steps of: storing a plurality of text data in an external storage means detachable from a main body of a text processing apparatus, wherein the main body of said text processing apparatus can read and edit one or more of the plurality of text data stored in the external storage means; and displaying the plurality of text data stored in the external storage means, wherein the display condition of one or more of the plurality of text data edited by an editing process is distinguishable from that of unedited one or more of the plurality of text data.

Claim 21

A text processing method according to claim 15, wherein said display step comprises the step of displaying the one or more of the plurality of text data edited by said editing process in black against a white background or in white against a black background.

Claim 22

A text processing method according to claim 15, wherein said storing step comprises the step of storing the plurality of text data in an external storage means comprising a floppy disc.

Claim 23

A text processing method according to claim 15, wherein said storing step comprises the step of storing the plurality of text data in an external storage means comprising an optical card.

Claim 24

A text processing apparatus comprising: external storage means for storing a plurality of text data, said external storage means being detachable from a main body of said text processing apparatus, wherein the main body of said text processing apparatus can read and edit one or more of the plurality of text data stored in said external storage means; and display means for displaying one of the plurality of text data stored in said external storage means wherein the display condition of one or more of the plurality of text data edited by an editing process is distinguishable from that of unedited one or more portions of the one text data.

Claim 25

A text processing apparatus comprising: external storage means for storing a plurality of text data, said external storage means being detachable from a main body of said text processing apparatus, wherein the main body of said text processing apparatus can read and edit one or more of the plurality of text data stored in said external storage means; and display means for displaying one of the plurality of text data stored in said external storage means wherein the display condition of one or more of the plurality of text data edited by an editing process is distinguishable from that of unedited one or more portions of the one text data.

Claim 26

A text processing apparatus according to claim 19, wherein said display means displays the one or more of the plurality of text data edited by said editing process in black against a white background or in white against a black background.

Claim 27

A text processing apparatus according to claim 19, wherein said external storage means comprises a floppy disc.

Claim 28

A text processing apparatus according to claim 19, wherein said external storage means comprises an optical card.

Claim 29

A text processing method comprising the steps of: storing a plurality of text data in an external storage means detachable from a main body of a text processing apparatus, wherein the main body of said text processing apparatus can read and edit one or more of the plurality of text data stored in the external storage means; and displaying one of the plurality of text data stored in the external storage means, wherein the display condition of one or more of the plurality of text data edited by an editing process is distinguishable from that of unedited one or more portions of the one text data.

Claim 30

A text processing method comprising the steps of: storing a plurality of text data in an external storage means detachable from a main body of a text processing apparatus, wherein the main body of said text processing apparatus can read and edit one or more of the plurality of text data stored in the external storage means; and displaying one of the plurality of text data stored in the external storage means, wherein the display condition of one or more of the plurality of text data edited by an editing process is distinguishable from that of unedited one or more portions of the one text data.

Claim 31

A text processing method according to claim 23, wherein said displaying step comprises the step of displaying the one or more of the plurality of text data edited by said editing process in black against a white background or in white against a black background.

Claim 32

A text processing method according to claim 23, wherein said storing step comprises the step of storing the plurality of text data in an external storage means comprising a floppy disc.

Claim 33

A text processing method according to claim 23, wherein said storing step comprises the step of storing the plurality of text data in an external storage means comprising an optical card.