Memory system for portable telephone

• US 9,473,603 B2
• Filed: 11/20/2015
• Issued: 10/18/2016
• 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:
  US14/947,748
• Publication Number:
  US 20160080534A1
• Time in Patent Office: 333 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 make wireless communication, comprising:

an antenna;

an RF communication circuit configured to receive input data via the antenna;

a NAND flash memory configured to store the input data and a program;

a processor configured to execute the program to expand the input data in order to generate output data;

a volatile memory configured to be used as a working area for the processor; and

an outputting device configured to output the output data.

2. The mobile apparatus according to claim 1,

wherein the input data is compressed data.

3. The mobile apparatus according to claim 1,

wherein the output data is image data.

4. The mobile apparatus according to claim 3,

wherein the outputting device is a display.

5. The mobile apparatus according to claim 1,

wherein the output data is audio data.

6. The mobile apparatus according to claim 5,

wherein the outputting device is a speaker.

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.