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Mult-functionalalarming System Background of the Invention
| Content Provider | Semantic Scholar |
|---|---|
| Copyright Year | 2017 |
| Abstract | 54 MULTI-FUNCTIONAL ALARMING SYSTEM 4,851,823 7/1989 Mori................................ 340/692 X 4,912,457 3/1990 Ladd ............................... 340/692 X 75 Inventor: Alan Chiang, Chuang Hwa, Taiwan Primary Examiner-John K. Pen 73. A : Ultrafashion Textile Co., Ltd., ry 2 73) Assignee Hwa, into extile Co., Ltd., Chung Assistant Examiner-Thomas J. Mullen, Jr. Attorney, Agent, or Firm-Browdy and Neimark 21 Appl. No.: 28,266 (57) ABSTRACT 22 Filed: Mar. 9, 1993 al od hich enabl An alarm system employing a vocoder which enables : s l w a a w w a as a 8 as a w a G08B 6. E. 2. the alarm system to emit not only a buzzing sound but at YY 888 & 8 as was 8 v 89 se we see s see ess 3407652. s 81 75 6 also a human voice, the alarm system being composed 58 Field of Search ........... 340/692, 6,373,5 of a microphone, a nigrophone amplifieryocode a 38/56-57 memory, a preamplifier, a power amplifier and 2. speaker whereby the alarm system can emit the buzzing 56) References Cited sound of a police car, whistle sound or human voice to U.S. PATENT DOCUMENTS enhance the burglarproof effect or serve as a fire alarm 3,475,751 10/1969 Sontaget al... system for indicating the way to escape. 4,060,803 1/1977 Ashworth, Jr. ... 381/56 X 4,750,036 6/1988 Martinez ............................. 358/147 5 Claims, 3 Drawing Sheets |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://patentimages.storage.googleapis.com/db/f2/bc/6995cd5ab4c5db/US5291183.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |