EP0502246A2
Expired / Lapsed
EP
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Automatic download device
Assignee: Ricos Co Ltd
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Filing: 1991-10-17
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Granted: —
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Expires: 2011-10-17
Abstract
Abstract An automatic download device is provided comprising a communication means (100) which is incorporated into a terminal and which communicates periodically with a center (C) by means of a communication line (2), and a download control means (200) which is connected to said communication means (100) and to a memory device (8) of said terminal (U) and which, on occassions when it is found that there is new data in said center memory device (5), secures space in said terminal memory device (8) for storage of said new data while at the same time reading said new data out of said center memory device (5) and storing it in said terminal memory device (8). Thus the device enables the automatic addition of new data to a database by means of a communication line (2). Communication is periodically established with said center (C) equipped with said memory device (5). In order to secure the requisite data storage space, data which is only infrequently accessed may be deleted from the terminal memory (8).
Inventors
- 👤 Mihoji Tsumura
- 👤 Shinnosuke Taniguchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 14:37
CPC Classifications
H; H04; H04L; H04L67/00; H04L67/01; H04L67/10; H04L67/1095; G; G06; G06F; G06F15/00; G06F15/16; G06F16/00; G06F16/20; G06F16/23; G06F16/2372; G06F8/00; H04L69/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
112 words
An automatic download device comprising a communication means (100) which is incorporated into a terminal and which communicates periodically with a center (C) by means of a communication line (2), and a download control means (200) which is connected to said communication means (100) and to a memory device (8) of said terminal (U) and which, on occasions when it is found that there is new data in said center memory device (5), secures space in said terminal memory device (8) for storage of said new data while at the same time reading said new data ouf of said center memory device (5) and storing it in said terminal memory device (8).
Claim 2
Dependent Claim
33 words
An automatic download device according to claim 1 wherein the securing of data storage space in said download control means (200) is achieved by the deletion of data which is accessed only infrequently.
Claim 3
Dependent Claim
87 words
An automatic download device according to claim 1 or claim 2 wherein said center (C) is equipped with a center memory device (5) and with a reading device (6), which reads data from said center memory device (5), and with a center modem (7) which carries out connection and disconnection with a telephone network (2) and which carries out modulation and demodulation operations, and wherein said communication means (100) comprises a terminal modem (101), which is connected to said center modem (7) by a telephone line (2).
Claim 4
Dependent Claim
50 words
An automatic download device according to claim 3 wherein said communication means (100) comprises a synchronization device (102) which synchronizes with the frames of an incoming signal while at the same time periodically connecting said terminal modem (101) in accordance with an internal timer in order to establish periodic communication.
Claim 5
Dependent Claim
54 words
An automatic download device according to claim 3 or claim 4 wherein said communication means (100) further comprises an error processing device (104) which, in the event of an abnormal connection or disconnection of the terminal modem (101), waits for a random period of time and then reconnects or disconnects said terminal modem (101).
Claim 6
Dependent Claim
41 words
An automatic download device according to anyone of claims 3 to 5 wherein said communication means (100) further comprises an error control device (108) which detects errors in data received from said center (C) for the purpose of securing correct communications.
Claim 7
Dependent Claim
51 words
An automatic download device according to anyone of claims 3 to 6 wherein said download control means (200) comprises a tune name control device (203) which compares data received from said center (C) with data stored in said terminal memory device (8) and selects such data as needs to be downloaded.
Claim 8
Dependent Claim
53 words
An automatic download device according to anyone of claims 3 to 7 wherein said download control means (200) further comprises a data processing device (202) which checks the size of download data and then checks whether or not there is sufficient space in the terminal memory device (8) to store said download data.
Claim 9
Dependent Claim
35 words
An automatic download device according to claim 8 wherein said data processing device (202) deletes data held in the terminal memory device (8) in priority order starting with the data which is least frequently accessed.
Claim 10
Dependent Claim
24 words
An automatic download device according to claim 9 wherein each item of data is allocated its own hold time during which deletion is inhibited.
Claim 11
Dependent Claim
28 words
An automatic download device according to anyone of the preceding claims wherein said data comprises tune data in the form of bit signals assembled in tune sized units.
Claim 12
Dependent Claim
27 words
An automatic download device according to claim 11 wherein said music consists of karaoke music and said tune data is created in conformity with the MIDI standard.
References Cited (Backward Citations)
No citation records indexed.
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