KR100287366B1 - 엠피이지 방식을 이용한 휴대용 음향 재생장치 및 방법 - Google Patents
엠피이지 방식을 이용한 휴대용 음향 재생장치 및 방법 Download PDFInfo
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- KR100287366B1 KR100287366B1 KR1019970062315A KR19970062315A KR100287366B1 KR 100287366 B1 KR100287366 B1 KR 100287366B1 KR 1019970062315 A KR1019970062315 A KR 1019970062315A KR 19970062315 A KR19970062315 A KR 19970062315A KR 100287366 B1 KR100287366 B1 KR 100287366B1
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- G11C7/16—Storage of analogue signals in digital stores using an arrangement comprising analogue/digital [A/D] converters, digital memories and digital/analogue [D/A] converters
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- G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
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- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/10—Input/output [I/O] data interface arrangements, e.g. I/O data control circuits, I/O data buffers
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- G11B20/00007—Time or data compression or expansion
- G11B2020/00014—Time or data compression or expansion the compressed signal being an audio signal
- G11B2020/00057—MPEG-1 or MPEG-2 audio layer III [MP3]
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- G—PHYSICS
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- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
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- G—PHYSICS
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Abstract
Description
Claims (13)
- 휴대용 음향 재생장치에 있어서, 2차 전지로 이루어지며 부하에 필요한 동작 전원을 공급하는 전원 공급수단과;상기 전원 공급수단의 전원을 안정적인 전압, 전류로 정류하는 전원 처리수단과;동작상태에 따라 메시지를 숫자 및 문자로 표시하는 표시수단과;MPEG방식의 음원 데이터의 저장과 복원 재생에 대한 전반적인 동작을 제어하는 제어수단과;상기 제어수단에서 인가되는 신호에 따라 MPEG방식의 음원 데이터 정보를 지정되는 어드레스 번지에 저장하는 저장수단과;상기 저장수단에 저장된 임의의 음원 데이터 재생과 저장 및 각종 동작제어에 대한 전반적인 동작을 지시하는 정보선택수단과;상기 제어수단에서 인가되는 신호에 따라 저장수단에 저장되어 있는 음원 데이터를 사람이 청취 가능하도록 변환하는 음향 재생수단과;외부기기와 연결되어 음원 데이터 및 프로그램 데이터의 송수신하는 송수신 수단을 포함하는 것을 특징으로 하는 엠피이지 방식을 이용한 휴대용 음향 재생장치.
- 청구항 1에 있어서, 상기 전원처리수단은 어댑터를 통하여 외부의 전원이 인가되는 경우 상기 전원 공급수단의 2차 전지에 충전 전류를 공급하는 것을 특징으로 하는 엠피이지 방식을 이용한 휴대용 음향 재생장치.
- 청구항 1에 있어서, 상기 정보선택부(300)는 적어도 상기 저장수단에 있는 자료를 찾아 재생하도록 지시하는 재생 스위치; 일정시간 이하로 누를 경우 다음곡의 선택과 일정시간 이상 계속 누를 경우 빠른 재생을 지시하는 전방향 스위치; 일정시간 이하로 누를 경우 현재 재생되는 곡의 처음 또는 이전 곡의 선택과 일정시간 이상 계속 누를 경우 뒤로 빠른 재생을 지시하는 후방향 스위치; 한 번 누르면 정지되고 정지상태에서 또 누르면 전원이 꺼지도록 지시하는 정지 스위치; 한 번 누르면 1곡 반복, 두 번째 누르면 전체 반복, 세 번째 누르면 곡 순서에 관계없이 무작위로 연주되도록 지시하는 반복 스위치; 및 재생음의 크기를 조절하는 음량조절스위치를 포함하는 것을 특징으로 하는 엠피이지 방식을 이용한 휴대용 음향 재생장치.
- 청구항 1에 있어서, 상기 제어수단은 MPEG 방식으로 저장된 디지탈 음원 데이터를 사람이 청취 가능한 음향으로 변환하기 위한 동작을 제어하는 CPU와;입출력 조작의 종료나 입출력 오류시 상기 CPU의 동작을 제어하기 위한 제어신호를 출력하는 인터럽트 제어기와;상기 전원 처리수단에서 인가되는 전원을 CPU의 동작 전원으로 안정적으로 공급하며 에러 발생시 전원을 차단하기 위한 제어신호를 출력하는 전원 제어기와;상기 정보 선택수단에서 인가되는 키 선택 신호를 인터페이싱하는 키보드 인터페이스와;상기 정보 표시수단의 행과 열에 공급되는 전류를 제어하여 동작 상태의 디스플레이 구현을 제어하는 LCD 제어기와;프로그램이나 메모리 영역의 확장을 위해 추가되는 확장 롬의 접속을 인터페이싱하는 확장 롬 인터페이스와;데이터의 백업 동작과 백업된 데이터의 재생 및 시스템 운용에 필요한 데이터의 인터럽트에 필요한 시간 정보를 카운트하는 타이머와;소정의 제어 프로그램이 설정되며, 전원의 공급시 플래시 롬으로부터 메인 프로그램을 로딩받아 상기 CPU 및 주변기기를 초기화시키는 부트 롬과;상기 부트 롬에 저장되어 있는 제어 명령을 실행하기 위한 전반적인 동작을 제어하는 부트 롬 제어기와;데이터를 전송하는 버스를 제어하기 위한 제어신호를 출력하는 버스 브리지 엑세스 제어기와;상기 CPU를 통하지 않고 직접 데이터를 입출력하기 위한 제어신호를 출력하는 DMA 제어기와;송수신되는 데이터의 입출력을 제어하는 직렬/병렬 제어기와;상기 CPU에서 인가되는 인터럽트 제어신호에 따라 상기 저장수단에 저장된 프로그램 데이터를 억세스하는 램 제어기와;상기 CPU에서 인가되는 인터럽트 제어신호에 따라 상기 저장수단의 플래시 롬을 활성화시키는 플래시 롬 제어기와;MPEG방식으로 압축된 디지탈 음향 데이터의 입출력을 제어하기 위한 제어신호를 출력하는 DSP 인터페이스와;발진 클럭을 소정의 상태로 처리하여 상기 CPU측에 클럭 신호로 드라이브하는 클럭 드라이버로 이루어지는 것을 특징으로 하는 엠피이지 방식을 이용한 휴대용 음향 재생장치.
- 청구항 1에 있어서, 상기 저장수단은 전원이 나가면 기억된 정보가 소실되는 휘발성 기억매체로 전원이 있는 동안 임시저장 장소로 이용되는 램과;전원이 나가도 기억된 정보가 소실되지 않는 비휘발성 기억매체로서, 디지탈 음원 데이터 및/또는 프로그램 데이터가 저장되며 저장된 데이터를 삭제할 수 있는 플래시 롬을 포함하는 것을 특징으로 하는 엠피이지 방식을 이용한 휴대용 음향 재생장치.
- 청구항 1에 있어서, 상기 음향 재생수단은 MPEG방식으로 압축된 디지탈 음원 데이터를 소정의 상태로 처리하여 복원하는 디지털신호처리(DSP)부와;상기 디지털신호처리(DSP)부에서 복원된 디지탈 음원 데이터를 전기적인 음향신호로 변환하는 오디오 회로로 이루어지는 것을 특징으로 하는 엠피이지 방식을 이용한 휴대용 음향 재생장치.
- 정보 선택수단에 의한 전원 공급시 시스템을 초기화한 다음 저장수단의 플래시 롬 상태를 검출하는 과정과;상기에서 플래시 롬의 상태가 정상적으로 판단되면 플래시 롬으로부터 메인 프로그램을 로딩하여 실행 환경을 설정하는 과정과;실행 환경의 설정이 완료되면 정보 선택수단의 선택 신호와 동작 전원 상태, 외부 전원의 연결 여부, 외부 통신기기의 연결 여부 등에 따라 저장된 음원 데이터의 재생과 데이터의 백업 저장을 실행하는 과정을 포함하는 것을 특징으로 하는 엠피이지 방식을 이용한 휴대용 음향 재생방법.
- 청구항 7에 있어서, 전원이 인가되면 CPU와 주변 회로를 초기화한 후 메인 프로그램에 이상이 있는지 검출하는 단계와;메인 프로그램이 정상이면 메인 프로그램을 실행시켜 자기 환경을 설정하고 메인 프로그램에 이상이 있으면 에러신호를 출력함과 동시에 실행동작을 정지시키는 단계를 더 포함하는 것을 특징으로 하는 엠피이지 방식을 이용한 휴대용 음향 재생방법.
- 청구항 7에 있어서, 실행 환경에서 임의의 동작이 진행되는 중에 정보 선택수단에서 인가되는 키 신호가 검출되면 동작 전원을 차단하기 위한 신호인지를 판단하는 단계와;상기에서 전원 차단 신호가 아니면 재생 선택 신호인지를 판단하는 단계와;상기에서 재생 선택이 아니면 현재 선택된 음원 데이터 이후의 데이터를 선택하기 위한 신호인지를 판단하는 단계와;상기에서 현재 선택된 데이터 이후의 데이터를 선택하는 신호가 아니면 현재 선택된 음원 데이터 이전의 데이터를 선택하기 위한 신호인지를 판단하는 단계와;상기에서 현재 선택된 데이터 이전의 데이터를 선택하기 위한 신호가 아니면 현재 진행중인 재생 동작을 중지시키기 위한 선택 신호인지를 판단하는 단계와;상기에서 현재 재생 동작을 중지시키기 위한 선택 신호가 아니면 현재 재생중인 음원 데이터 또는 임의의 음원 데이터를 반복 재생시키기 위한 선택신호인지를 판단하는 단계와;반복 재생을 선택하는 신호가 아니면 데이터의 저장 순서에 관계없이 무작위로 재생하고자 하는 선택신호인지를 판단하는 단계 및;상기 선택되는 각각의 키 신호에 따라 해당 동작을 실행시키는 단계를 포함하는 것을 특징으로 하는 엠피이지 방식을 이용한 휴대용 음향 재생방법.
- 청구항 7에 있어서, 상기 과정에서 검출되는 전원 공급수단의 동작 전원 상태가 저전력으로 판단되면 검출되는 전압을 설정된 기준값과 비교하는 단계와;상기에서 전원 공급수단이 안정된 동작을 실행시킬 수 없는 저전력으로 판단되면 전원 차단 경고 메시지를 표시함과 현재의 데이터를 안정되게 백업 저장한 후 전원을 차단시키는 단계 및;상기에서 전원 공급수단의 전력이 최소의 동작만을 실행시킬 수 있는 정도의 상태이면 충전을 요구하는 경고 메시지를 표시하는 단계를 포함하는 것을 특징으로 하는 엠피이지 방식을 이용한 음향 재생방법.
- 청구항 7에 있어서, 외부 전원의 공급이 검출되는 경우 외부 전원을 이용하여 음원 데이터의 재생 동작을 진행하며, 전원 공급수단의 전력상태를 검출하여 충전동작을 진행하는 것을 특징으로 하는 엠피이지 방식을 이용한 음향 재생장치.
- 청구항 7에 있어서, 정보 선택수단으로부터 재생을 요구하는 선택신호가 검출되면 선택된 음원 데이터 및 재생중인 음원 데이터에 대한 정보를 LCD를 통해 표시하는 것을 특징으로 하는 엠피이지 방식을 이용한 음향 재생장치.
- 청구항 7에 있어서, 외부의 통신기기와 접속되어 데이터의 수신이 진행되면 수신된 데이터를 검색하여 에러가 포함되어 있는지를 판단하는 단계와;상기에서 수신된 데이터에 에러가 포함되어 있는 것으로 판단되면 데이터의 재전송을 요구하는 단계와;수신된 데이터에 에러가 검출되지 않으면 데이터 송신 완료에 대한 플러그의 검출에 따라 수신된 데이터를 자료 저장수단의 지정되는 어드레스 번지에 저장하는 단계를 더 포함하는 것을 특징으로 하는 엠피이지 방식을 이용한 음향 재생장치.
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EP07011463A EP1826767A3 (en) | 1997-11-24 | 1998-04-17 | MPEG portable sound reproducing system and a reproducing method thereof |
EP98201235A EP0924708B1 (en) | 1997-11-24 | 1998-04-17 | MPEG portable sound reproducing system and a reproducing method thereof |
EP07011504A EP1843354A3 (en) | 1997-11-24 | 1998-04-17 | MPEG portable sound reproducing system and a reproducing method thereof |
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EP06009834A EP1684300A3 (en) | 1997-11-24 | 1998-04-17 | MPEG portable sound reproducing system and a reproducing method thereof |
ES98201235T ES2287968T3 (es) | 1997-11-24 | 1998-04-17 | Sistema portatil de reproduccion de sonido mpeg y su procedimiento de reproduccion. |
DE69837907T DE69837907T2 (de) | 1997-11-24 | 1998-04-17 | Tragbares MPEG-Schallwiedergabesystem und Wiedergabeverfahren dafür |
CN98114958A CN1133167C (zh) | 1997-11-24 | 1998-04-20 | 按照运动图像专家组标准的便携式放音系统 |
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US11/586,462 US8116890B2 (en) | 1997-11-24 | 2006-10-25 | Portable sound reproducing system and method |
US11/586,463 US8615315B2 (en) | 1997-11-24 | 2006-10-25 | Portable sound reproducing system and method |
US11/648,412 US20070112449A1 (en) | 1997-11-24 | 2006-12-29 | Portable sound reproducing system and method |
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1998
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- 1998-04-17 EP EP07011463A patent/EP1826767A3/en not_active Withdrawn
- 1998-04-17 EP EP07011464A patent/EP1843353A3/en not_active Withdrawn
- 1998-04-17 EP EP06007392A patent/EP1688954A3/en not_active Withdrawn
- 1998-04-17 EP EP06009834A patent/EP1684300A3/en not_active Withdrawn
- 1998-04-17 ES ES98201235T patent/ES2287968T3/es not_active Expired - Lifetime
- 1998-04-17 DE DE69837907T patent/DE69837907T2/de not_active Expired - Fee Related
- 1998-04-17 EP EP98201235A patent/EP0924708B1/en not_active Expired - Lifetime
- 1998-04-17 US US09/061,647 patent/US6629000B1/en not_active Expired - Lifetime
- 1998-04-20 CN CN98114958A patent/CN1133167C/zh not_active Expired - Fee Related
- 1998-04-27 JP JP10116444A patent/JPH11175099A/ja active Pending
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KR20000002893A (ko) * | 1998-06-24 | 2000-01-15 | 윤종용 | 다운로드가 가능한 디지털오디오기기 |
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KR100687701B1 (ko) * | 1999-09-21 | 2007-02-27 | 소니 가부시끼 가이샤 | 통신시스템 및 그 방법, 통신장치 및 그 방법 |
KR100424076B1 (ko) * | 2001-05-30 | 2004-03-24 | 이지퀵 주식회사 | 다기능 디지털 오디오 스테이션 및 이의 제어방법 |
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KR100919476B1 (ko) * | 2007-05-17 | 2009-09-28 | (주)부리멀티미디어 | 시분할 방식을 이용한 특성 직접 메모리 액세스 기반의멀티채널 음성 디코딩 장치 및 이를 이용한 멀티채널 음성디코딩 방법 |
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