EP0217654A2
Expired / Lapsed
EP
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Information medium
Assignee: Toshiba Corp
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Filing: 1986-09-26
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Granted: —
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Expires: 2006-09-26
Abstract
Abstract An information medium comprising a receiving section (2), a transmitting section (4), and a transfer-control section (2). The receiving section (2) receives instructions from an external device. The transmitting section (4) transmits data to the external device. The transfer-control means (6) detects the ID code contained in any instruction information supplied to the receiving section (2), and changes the transfer program stored in memory when the ID code specifies a program-change instruction. The changed program is supplied to the external device via the transmitting section (4), so as to be recognized by the external device. Any instruction information supplied to the information medium has an enabling code field, an identification code field, a data field, and an end code field. The transfer-control section (6) includes a control section (31) and a memory unit (15). The control section (31) operates in accordance with the transfer program stored in the memory unit (15), thereby to determine which type of instruction information is specified by the ID code written in the identifying code field. The information medium further comprises a drive section (8) for starting and stopping the transmitting section (4) and the control section (31), in accordance with the enabling code written in the enabling code field, thereby to reduce the power consumption of the medium.
Inventors
- 👤 Masumi C/O Patent Div. Toshiba K.K: Oyama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 17:02
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/0008; G06K19/00; G06K19/06; G06K19/067; G06K19/07; G06K19/0723; G07; G07C; G07C9/00; G07C9/20; G07C9/28
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
94 words
An information medium which can correctly exchange data with an external device, said medium comprising receiving means (2) for receiving instructions from the external device, transmitting means (4) for transmitting data to the external device, characterized by further comprising transfer-control means (6) for performing one of: an operation for writing the data, contained in the instruction information, into a memory; an operation for reading data from the memory to said transmitting means; and, an operation for changing the transfer program stored in the memory, in accordance with the instruction information from said receiving means.
Claim 2
Dependent Claim
94 words
An information medium which can correctly exchange data with an external device, said medium comprising receiving means (2) for receiving instructions from the external device, transmitting means (4) for transmitting data to the external device, characterized by further comprising transfer-control means (6) for performing one of: an operation for writing the data, contained in the instruction information, into a memory; an operation for reading data from the memory to said transmitting means; and, an operation for changing the transfer program stored in the memory, in accordance with the instruction information from said receiving means.
Claim 3
Dependent Claim
137 words
The information medium according to claim 1, characterized in that said transfer-control means (6) comprises: memory means (15) for storing a transfer program determining what type of instruction is specified by an ID code of the instruction information input from said receiving means; storing the data contained in the instruction information when the ID code specifies a write instruction; reading the data, designated by the read instruction, to said transmitting means when the ID code specifies the read instruction; changing the transfer program when the ID code specifies a program-change instruction; and, storing the data to be written in accordance with the write instruction and the data to be read in accordance with the read instruction; and control means (31) for processing the instruction information, in accordance with the transfer program stored in said memory means (15).
Claim 4
Dependent Claim
194 words
The information medium according to claim 2, characterized in that said control means (31) comprises: determining means (31) for determining the type of the instruction information, having an ID code field, a data field, and an end code field, from the ID code written in the I D code field in accordance with the transfer program stored in said memory means (15); output means (31) for outputting the supplied data to said transmitting means; data-writing means (31) for storing data in the data field into said memory means (15), in accordance with the transfer program stored in said memory means (15), when said determining means determines that the ID code is a write instruction; data-reading means (31) for reading from said memory means (15), the data designated by the read instruction, in accordance with the transfer program stored in said memory means (15), when said determining means determines that the ID code is a read instruction, and for supplying the read data to said output means; and program-changing means (31) for changing the transfer program, in accordance with a program-change instruction, when said determining means determines that the ID code is a program-change instruction.
Claim 5
Dependent Claim
98 words
The information medium according to claim 3, characterized in that said data-writing means (31) and said data-reading means (31) further comprise means for driving said determining means (31) when an end code is detected in the end code field, and said program-changing means (31) further comprises means (31) for reading and supplying, to said output means, information corresponding to the transfer program, in response to the end code in the end code field without the ID code field and the data field, and for driving said determining means after supplying the information corresponding to the changed transfer program.
Claim 6
Dependent Claim
106 words
The information medium according to claim 4, characterized in that said determining means (31) further comprises means (31) for determining that the instruction information is an end instruction, when the instruction has no ID code field and no data field; and said program-changing means (31) further comprises means (31) for executing the changed transfer program, in response to the end instruction received in succession to the program change instruction, and for operating said determining means, and means (31) for terminating a series of operations when said determining means (31) determines that the instruction information received after the write instruction or read instruction, is the end instruction.
Claim 7
Dependent Claim
152 words
The information medium according to claim 5, characterized in that said memory means (15) comprises control program storing means (33) for storing a control program, first transfer program storing means (34) for storing the transfer program, and first data storing means (35) for storing data; and said program-changing means (31) comprises means (31) for executing the control program stored in said control program storing means (33) when said determining means (31) determines that the instruction information is a program-change instruction, means (31) for storing the transfer program contained in said program-change instruction into said first transfer program storing means (34), in accordance with the control program, and means (31) for reading and supplying, to said output means (31), the transfer program from said first transfer program storing means (34), in accordance with the end code in the end code field, following the ID code field, for said program-change instruction to be written.
Claim 8
Dependent Claim
111 words
The information medium according to claim 5, characterized in that said memory means (15) comprises second transfer program storing means (38) for storing the transfer program, and second data storing means (35) for storing data; and said program-changing means (31) comprises means (31) for executing a transfer program, stored in said second transfer program storing means (38) and designated by the program-change instruction, when said determining means (31) determines that the instruction is a program-change instruction, and means for reading the data corresponding to the designated transfer program, in accordance with the end code in the end code field following the ID code field, for the program-change instruction to be written.
Claim 9
Dependent Claim
67 words
The information medium according to claim 5, characterized in that the instruction information contains, in the first field, an enabling code field for an enabling code to be written for designating the information medium, and which further comprises drive means (8) for supplying power to and driving said control means (31) and said transmitting means (4), in response to the enabling code contained in the instruction information.
Claim 10
Dependent Claim
129 words
The information medium according to claim 5, characterized in that said control means (31) further comprises means (31) for generating a "power supply stop" signal, when said determining means (31) deter- .,mines that the instruction information is the end code without the ID code and data fields; and said drive means (8) comprises discriminating means (21) for comparing the enabling code with a predetermined code and for generating a "power supply start" signal, when the enabling code is identical to the predetermined code; a power source (23), and switching means (22) for supplying power from said power source to said control means (31) and said transmitting means (4), in response to the "power supply start" signal, and stopping the power supply in response to the "power supply stop" signal.
Claim 11
Dependent Claim
176 words
The information medium according to claim 9, characterized in that said transfer-control means (6) further comprises clock generator means (32) for generating clock pulses, in response to a generation control signal; and said control means (31) operates under the control of the clock pulses generated by the clock generator means (32) and comprises means (31) for generating the "power supply stop" signal, when said determining means (31) determines that the instruction information consists of the enabling code field and the end code field; and said drive means (8) comprises discriminating means (21) for comparing the enabling code with a predetermined code, and for generating the "power supply start" signal, when the enabling code is identical to the predetermined code; a power source (23), and second switching means (25) for supplying power to said transmitting means (4) and the generation control signal to the clock generator means (32), in response to the "power supply start" signal, and stopping the power supply and the supply of the generation control signal in response to the "power supply stop" signal.
References Cited (Backward Citations)
No citation records indexed.
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