Retro-storing analog information in a digital storage circuit
First Claim
1. A method for retro-storing analog information, comprising first analog data and second analog data, in a memory circuit, comprising the steps of:
- (A) receiving and processing the first analog data into first digitized data for storage in the memory circuit;
(B) storing the first digitized data in the memory circuit;
(C) receiving and processing the second analog data into second digitized data for storage in the memory circuit;
(D) determining if storage of the analog information is required;
(E) if storage of the analog information is required, then storing the second digitized data with the first digitized data in the memory circuit such that when the second digitized data are retrieved, both the first digitized data and the second digitized data are retrieved from the memory circuit; and
(F) if storage of the analog information is not required, then deleting the first digitized data from the memory circuit and storing the second digitized data in the memory circuit.
1 Assignment
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Accused Products
Abstract
A method for retro-storing analog information in a memory circuit first processes first analog data into first digitized data. The first digitized data are then stored in the memory circuit. Second analog data are then received and processed into second digitized data. If storage of the analog information is now required, the second digitized data are stored with the first digitized data in the memory circuit. If storage is not required, the first digitized data are deleted from the memory circuit and the second digitized data are stored in the memory circuit. An integrated storage circuit for retro-storing and retrieving analog information is also described. The circuit includes a control circuit for controlling a processing circuit to store digitized analog data in a nonvolatile memory in response to a control signal. When the control signal is not asserted, the control circuit controls the digitized analog data to be stored in the buffer circuit in a closed loop manner. When the control signal is asserted, the control circuit controls (1) the digitized analog data received after the control signal is enabled and (2) the digitized analog data already stored in the buffer circuit into the nonvolatile memory.
57 Citations
18 Claims
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1. A method for retro-storing analog information, comprising first analog data and second analog data, in a memory circuit, comprising the steps of:
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(A) receiving and processing the first analog data into first digitized data for storage in the memory circuit; (B) storing the first digitized data in the memory circuit; (C) receiving and processing the second analog data into second digitized data for storage in the memory circuit; (D) determining if storage of the analog information is required; (E) if storage of the analog information is required, then storing the second digitized data with the first digitized data in the memory circuit such that when the second digitized data are retrieved, both the first digitized data and the second digitized data are retrieved from the memory circuit; and (F) if storage of the analog information is not required, then deleting the first digitized data from the memory circuit and storing the second digitized data in the memory circuit. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for retro-storing analog information comprising a plurality of analog data, in a memory circuit, comprising the steps of:
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(A) receiving and processing the plurality of analog data into digitized data for storage in the memory circuit; (B) storing the digitized data in the memory circuit in a continuous loop manner; (C) detecting a signal indicating that storage of the analog information is required; (D) preventing a predetermined number of the digitized data last stored in the memory circuit before the signal is detected from being deleted, in order to retro-store the analog information. - View Dependent Claims (8, 9)
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10. A method for retro-storing audio information comprising a first audio message and a second audio message in a nonvolatile memory, comprising:
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(A) receiving and processing the first audio message into first digitized data; (B) storing the first digitized data in a buffer circuit; (C) receiving and processing the second audio message into second digitized data; (D) determining if storage of the audio information is required; (E) if storage of the audio information is required, then (i) storing the first digitized data into the nonvolatile memory from the buffer circuit; (ii) storing the second digitized data into the nonvolatile memory, such that when the second digitized data is retrieved, both the first and second digitized data are retrieved from the nonvolatile memory; (F) if storage of the audio information is not required, then deleting the first digitized data from the buffer circuit and storing the second digitized data in the buffer circuit. - View Dependent Claims (11, 12, 13)
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14. An integrated circuit for retro-storing and retrieving analog information, comprising:
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(A) a signal converter for converting the analog information into digitized data; (B) a buffer circuit for buffering the digitized data; (C) a memory for storing the digitized data; (D) a processing circuit for processing the digitized data and for controlling the buffer circuit and the memory to store the digitized data; (E) a control circuit coupled to the memory, the buffer circuit, and the processing circuit for controlling the processing circuit to store the digitized data in the memory in response to a control signal, wherein when the control signal is not asserted, the control circuit controls the processing circuit to store the digitized data in the buffer circuit in a continuous loop manner, wherein when the control signal is asserted, the control circuit controls the processing circuit to store into the memory (1) the digitized data received after the control signal is asserted and (2) the digitized data already stored in the buffer circuit. - View Dependent Claims (15, 16, 17, 18)
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Specification