Document information filing system

Claim 2

A document information filing system comprising: means (22) for calculating a remaining storage capacity of a recording medium (28a) being used from an address of index information in title information recorded in the recording medium, a rated storage capacity of the recording medium and a average document information quantity of unit document information; means (13) for displaying the remainig storage capacity calculated by said calculating means (22); document information producing means (12) for producing document information corresponding to a pattern of a document through scanning thereof; means (28) for compressing the document information of said document information producing means; recording and reproducing means (lla) for recording compressed document information from said compressing means on the recording medium and reading out the recorded compressed document information; and means (28) for decoding the compressed document information read out by said recording and reproducing means into the initial document information.

Claim 3

The document information filing system according to claim 1, wherein said calculating means (CPU) calculates the remaining storage capacity R using a formula where U is the quantity of already recorded document information, T is the rated storage capacity of the recording medium, Dtyp is the average document information quantity of unit document information, and Dmax is the non-compressed document information quantity of unit document information.

Claim 4

A document information filing system comprising: recording and reproducing means (lla) for recording and reproducing document information and title information containing management information and index information corresponding to said document information; a control section (22) including a title information memory for storing title information read out from the recording medium by said recording and reproducing means and processing means for calculating the remaining storage capacity of the recording medium from the title information stored in said title information memory, the rated storage capacity of the recording medium and the average document information quantity of unit document information; display means (13) for displaying the remaining storage capacity calculated by said processing means of said control section and document information; document information producing means (12) for providing document information of the pattern of a document through the scanning thereof; information coding and decoding means (28) having a coding function for compressing the document information from said document information producing means to produce compressed document information and a decoding function for expanding the compressed document information; means (27) for coupling said compressed document information to said recording and reproducing means for recording; and a copying device (15) for producing a hard copy of said document information when required.

Claim 5

A document information filing system comprising: recording and reproducing means (lla) for recording and reproducing document information and title information containing management information and index information corresponding to said document information; a control section (22) including a title information memory for storing title information read out from the recording medium by said recording and reproducing means and processing means for calculating the remaining storage capacity of the recording medium from the title information stored in said title information memory, the rated storage capacity of the recording medium and the average document information quantity of unit document information; display means (13) for displaying the remaining storage capacity calculated by said processing means of said control section and document information; document information producing means (12) for providing document information of the pattern of a document through the scanning thereof; information coding and decoding means (28) having a coding function for compressing the document information from said document information producing means to produce compressed document information and a decoding function for expanding the compressed document information; means (27) for coupling said compressed document information to said recording and reproducing means for recording; and a copying device (15) for producing a hard copy of said document information when required.

Claim 6

The document information filing system according to claim 3, wherein said processing means (22) calculates the remaining storage capacity R using a formula where U is the quantity of recorded document information, T is the rated storage capacity of the recording medium, Dtyp is the average document information quantity of unit document information, and Dmax is the non-compressed document information quantity of unit document information.

Claim 7

The document information filing system according to claim 3 or 4, wherein said control section (22) includes a page buffer (26) for temporarily storing document information for one page.

Claim 8

The document information filing system according to claim 3 or 4, wherein said coding and decoding means is a modified Hofmann coding and decoding circuit (28).

Claim 9

The document information filing system according to claim 3 or 4, wherein said recording and reproducing means is a video recorder (lla).

Claim 10

The document information filing system according to claim 3 or 4, wherein said copying device (15) is an electrophotographic copying device.