Controller and data processing system
AssigneeSanyo Electric Co., Ltd.
InventorsKaneo Watanabe, Masayuki Ishibashi, Hiroyuki Tsuda
Life of this patent
Estimating the term…
Abstract
A low-cost controller that operates in accordance with firmware stored in a memory. The controller includes a data processing circuit that performs predetermined processing on data and generates processed data. A write wire is connected to the memory, and a terminal is provided for use in the output of the data processed by the data processing circuit and/or the provision of the data to the data processing circuit. The controller includes a selector for connecting the write wire and the terminal to write the firmware to the memory.
Claims12
A controller of a system connected to a memory, which stores firmware, for operating in accordance with the firmware stored in the memory, the controller comprising:
- a data processing circuit that performs predetermined processing on data and generates processed data;
- a write wire connected to the memory;
- and
- a terminal used for outputting the data processed by the data processing circuit and/or providing the data to the data processing circuit, wherein the controller connects the write wire and the terminal so that the firmware is directly written to the memory by an external device via the write wire.
A controller of a system that operates in accordance with firmware stored in a firmware storing memory, the controller comprising:
- a first terminal for receiving and providing data between the controller and an external device;
- a data processing circuit for performing predetermined processing on the data to be provided to and received from the external device via the first terminal;
- and
- a firmware write wire connected to the firmware storing memory, wherein the controller selectively connects the first terminal and one of the data processing circuit and the firmware write wire, wherein the controller connects the first terminal and the firmware write wire so that the firmware is directly written to the firmware storing memory by the external device.
A data processing system connected to an external device via a connector for receiving and providing data between the external device, the system comprising:
- a memory for storing firmware;
- a microcomputer connected to the memory for performing control operation in accordance with the firmware stored in the memory;
- a data processing circuit connected to the microcomputer for performing predetermined processing on data to be provided to and received from the external device in accordance with the control of the microcomputer;
- and
- a selector connected to the data processing circuit and the memory for selectively connecting the connector and one of the data processing circuit and the memory, wherein the firmware is directly written to the memory by the external device via the connector when the selector connects the connector and the memory.
Dependencies are inferred from the claim text.