Memory system for portable telephone

• US 9,219,805 B2
• Filed: 02/06/2015
• Issued: 12/22/2015
• Est. Priority Date: 07/09/1999
• Status: Expired due to Term

• Current Assignee: Renesas Electronics Corporation
• Original Assignee: Renesas Electronics Corporation
• Inventors: Shinohara, Takayuki, Kimura, Masatoshi
• Primary Examiner(s): LEMMA, SAMSON B
• Application Number:
  US14/616,336
• Publication Number:
  US 20150156292A1
• Time in Patent Office: 319 Days
• Field of Search: 713/193, 380/210, 380236-237, 380/270, 455/550.1
• US Class Current: 1/1
• CPC Class Codes: G06F 13/385 for adaptation of a particular data processing system to different peripheral devices
• CPC Class Codes: G06F 13/4068 Electrical coupling
• CPC Class Codes: G06F 16/13 File access structures, e.g. distributed indices arrangements of input from, or output to, record carriers G06F3/06
• CPC Class Codes: G06F 2207/7228 Random curve mapping, e.g. mapping to an isomorphous or projective curve
• CPC Class Codes: G06F 2213/3806 Mobile device
• CPC Class Codes: G06F 3/061 Improving I/O performance
• CPC Class Codes: G06F 3/0655 Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices
• CPC Class Codes: G06F 3/0679 Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
• CPC Class Codes: G06F 7/725 over elliptic curves
• CPC Class Codes: G06F 9/4403 Processor initialisation
• CPC Class Codes: H04L 2209/08 Randomization, e.g. dummy operations or using noise
• CPC Class Codes: H04L 2209/56 Financial cryptography, e.g. electronic payment or e-cash
• CPC Class Codes: H04L 9/003 for power analysis, e.g. differential power analysis [DPA] or simple power analysis [SPA]
• CPC Class Codes: H04L 9/3066 involving algebraic varieties, e.g. elliptic or hyper-elliptic curves
• CPC Class Codes: H04M 1/026 Details of the structure or mounting of specific components
• CPC Class Codes: H04M 1/6505 storing speech in digital form
• CPC Class Codes: H04M 1/72403 with means for local support of applications that increase the functionality
• CPC Class Codes: H04M 2201/36 Memories
• CPC Class Codes: H04M 2250/14 including a card reading device

Abstract

A memory system is constituted of a file storage flash memory storing a control program required for a control portion and a large amount of data, and a random access memory storing a program used by the control portion and functioning as a buffer memory for received data. Thus, a memory system for a portable telephone capable of storing a large amount of received data at high-speed and allowing reading of the stored data at high-speed is provided.

Claims

1. A mobile apparatus configured to connect with an internet by radio, comprising:

an antenna;

an RF circuit configured to receive an audio signal data including music signal data via the antenna;

a signal processing unit including an audio processing unit, configured to process the audio signal;

a micro processing unit configured to control the signal processing unit;

a NAND flash memory configured to store program data for controlling the micro processing unit and the audio signal data;

a volatile memory configured to be used as a working area for the micro processing unit; and

a speaker configured to output an analogue audio data based on the audio signal data.

2. The mobile apparatus according to claim 1, further comprising a coder/decoder circuit configured to process the audio signal data.

3. The mobile apparatus according to claim 1,

wherein the NAND flash memory is configured to store the audio signal data.

4. The mobile apparatus according to claim 1,

wherein the RF circuit is configured to receive image signal data via the antenna.

5. The mobile apparatus according to claim 1,

wherein the NAND flash memory is configured to store the image signal data.

6. The mobile apparatus according to claim 1, further comprising a display.

7. The mobile apparatus according to claim 1,

wherein the volatile memory is a static random access memory.

8. The mobile apparatus according to claim 1,

wherein the volatile memory is a dynamic random access memory.

9. The mobile apparatus according to claim 1, further comprising a base band processor configured to modulate a radio signal outputted from the RF circuit.

10. The mobile apparatus according to claim 1, further comprising a bus,

wherein the signal processing unit, the micro processing unit, the NAND flash memory and the volatile memory coupled via the bus.

11. The mobile apparatus according to claim 1,

a storage capacity of the NAND flash memory is larger than that of the volatile memory.

12. The mobile apparatus according to claim 1,

wherein the NAND flash memory is configured to store the audio signal data;

wherein the micro processing unit transforms the audio signal data from the NAND flash memory to the signal processing unit; and

wherein the audio processing unit comprises an expansion circuit configured to expand the audio signal data into a reproduced audio signal data.