Patent EP0548681A2 successfully refreshed from Google Patents.
EP0548681A2
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EP
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Recording and reproducing apparatus provided with a batch erasable nonvolatile semiconductor memory device for batch erasing of specific data group(s)
Assignee: Sharp Corp
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Filing: 1992-12-09
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Granted: —
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Expires: 2012-12-09
Abstract
Abstract In a recording and reproducing apparatus (1), in which a plurality of data groups having arbitrary data capacities are recorded in and reproduced from a memory card (6) formed of a plurality of batch erasable semiconductor memories (17-21) having equal capacities, at least one of the plurality of semiconductor memories, which does not contain the recorded data, is set to be a spare memory. For erasing only one data group, the data groups, other than the data group to be erased, in the semiconductor memory containing the data group to be erased is recorded in the spare memory, and individual index data as well as card index data, of which reproduction order data and rewrite number data have been updated, are recorded in the spare memory. The semiconductor memory containing the data group to be erased is batch-erased and changed into a new spare memory.
Inventors
- 👤 Kengo Sudoh
- 👤 Yuji Sumitomo
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 15:05
CPC Classifications
G; G11; G11C; G11C16/00; G11C16/02; G11C16/06; G11C16/10; G11C16/102; G11C16/105; G06; G06F; G06F12/00; G06F12/02; G06F12/06; G06F12/0638; G06F2212/00; G06F2212/20; G06F2212/202; G06F2212/2022
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
204 words
A recording apparatus comprising: first memory means (17) formed of a batch erasable nonvolatile semiconductor memory device; second memory means (18) formed of a batch erasable nonvolatile semiconductor memory device; recording means (7) capable of recording a data group in said first or second memory means; erasing means (7) capable of erasing the data group recorded in said first or second memory means; first instruction means (12) for instructing recording of a plurality of data groups in said first memory means; first control means (7) for controlling said recording means so as to record said data groups in said first memory means in response to an instruction output of said first instruction means; second instructing means (12) for instructing erasing of one of said data groups recorded in said first memory means; and second control means (7), in response to an instruction output of said second instruction means, for controlling said recording means such that the data groups other than the data group which is instructed to be erased are recorded in said second memory means, and for controlling said erasing means such that the recorded contents of said first memory means is erased after the recording in said second memory means is completed.
Claim 2
Dependent Claim
15 words
A recording apparatus according to claim 1, wherein said semiconductor memory device includes an EEPROM.
Claim 3
Dependent Claim
27 words
A recording apparatus according to claim 2, wherein said first and second memory means constitute a memory card (6), which is removably attached to said recording apparatus.
Claim 4
Dependent Claim
66 words
A recording apparatus according to claim 1 further comprising: third instruction means (12) for instructing recording of a new data group; and third control means (7), in response to an instruction output of said third instruction means, for controlling said recording means such that said new data group is recorded in a region of the second memory means in which the data group is not recorded.
Claim 5
Dependent Claim
39 words
A recording apparatus according to claim 4, wherein said third control means controls said recording means such that an order data indicative of a recording order of the respective recorded data groups is recorded in said second memory means.
Claim 6
Dependent Claim
30 words
A recording apparatus according to claim 5 further comprising read means (7) for sequentially reading the data groups recorded in said second memory means in accordance with said order data.
Claim 7
Dependent Claim
14 words
A recording apparatus according to claim 6, wherein said data groups include sound data.
Claim 8
Dependent Claim
26 words
A recording apparatus according to claim 7 further comprising reproducing means (8, 9, 10, 11) for reproducing the corresponding sound based on said read sound data.
Claim 9
Dependent Claim
64 words
A memory card (6) which is removably attached to a recording and reproducing apparatus (1), comprising: a plurality of memory means (17-21), which are formed of batch erasable nonvolatile semiconductor memory devices, capable of recording a plurality of data groups; and control means (16) for controlling said respective memory means such that one of said memory means is used as a spare memory means.
Claim 10
Dependent Claim
15 words
A memory card according to claim 9, wherein said semiconductor memory devices include an EEPROM.
Claim 11
Dependent Claim
14 words
A memory card according to claim 10, wherein said data groups include sound data.
Claim 12
Dependent Claim
39 words
A memory card according to claim 9, wherein said control means changes the memory means to be used as said spare memory means to the different memory means, based on a signal applied from said recording and reproducing apparatus.
Claim 13
Independent Claim
86 words
A method of recording a plurality of data groups in batch erasable nonvolatile semiconductor memory devices (17-21), comprising the steps of: sequentially recording said plurality of data groups in at least one of said memory devices (17); recording at least one of said recorded data groups in a spare memory device (18); and erasing the data groups in the memory device, which contains the same date group as the data group already recorded in said spare memory, and thereby changing the same into the spare memory.
Claim 14
Dependent Claim
31 words
A recording method according to claim 13 further comprising the step of recording order data, which indicates a recording order of said recorded data groups, in one of said memory devices.
Claim 15
Dependent Claim
230 words
A recording and reproducing apparatus, in which a plurality of data groups having arbitrary data capacities are recorded in and reproduced from a data memory (6) formed of a plurality of batch erasable semiconductor memories (17-21) having equal capacities, said apparatus comprising: individual index data recording means (7) for recording individual index data, which forms index for reproduction of data, in each of said semiconductor memories; total index data recording means (7) for recording total index data including reproduction order data, which indicates a reproduction order of said plurality of semiconductor memories, and rewrite number data, which indicates the number of times of rewrite of said reproduction order data; and memory control means (7) for carrying out operations such that at least one of said plurality of semiconductor memories, which does not contain the recorded data, is set to be a spare memory, and that, for erasing only one of said data groups, the data groups, other than the data group to be erased, in the semiconductor memory containing said data group to be erased is recorded in said spare memory, said individual index data as well as said total index data, of which reproduction order data and rewrite number data have been updated, are recorded in said spare memory, and said semiconductor memory containing said data group to be erased is batch-erased and changed into a new spare memory.
References Cited (Backward Citations)
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