KR880002360A - Tone Generator of Digital Electronic Exchanger - Google Patents
Tone Generator of Digital Electronic Exchanger Download PDFInfo
- Publication number
- KR880002360A KR880002360A KR1019860005737A KR860005737A KR880002360A KR 880002360 A KR880002360 A KR 880002360A KR 1019860005737 A KR1019860005737 A KR 1019860005737A KR 860005737 A KR860005737 A KR 860005737A KR 880002360 A KR880002360 A KR 880002360A
- Authority
- KR
- South Korea
- Prior art keywords
- tone
- multiplexer
- counter
- digital electronic
- electronic exchanger
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
- H04M2201/10—Logic circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
- H04M2201/12—Counting circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
- H04M2201/36—Memories
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Prepayment Telephone Systems (AREA)
Abstract
내용 없음No content
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제1도는 본 발명에 따른 톤 제너레이터의 구성도이다.1 is a configuration diagram of a tone generator according to the present invention.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019860005737A KR890005371B1 (en) | 1986-07-14 | 1986-07-14 | Tone-generator of digital type exchange |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019860005737A KR890005371B1 (en) | 1986-07-14 | 1986-07-14 | Tone-generator of digital type exchange |
Publications (2)
Publication Number | Publication Date |
---|---|
KR880002360A true KR880002360A (en) | 1988-04-30 |
KR890005371B1 KR890005371B1 (en) | 1989-12-23 |
Family
ID=19251128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019860005737A KR890005371B1 (en) | 1986-07-14 | 1986-07-14 | Tone-generator of digital type exchange |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR890005371B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100285334B1 (en) * | 1997-12-05 | 2001-04-02 | 김진찬 | Apparatus for generating tone in a switching system |
-
1986
- 1986-07-14 KR KR1019860005737A patent/KR890005371B1/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100285334B1 (en) * | 1997-12-05 | 2001-04-02 | 김진찬 | Apparatus for generating tone in a switching system |
Also Published As
Publication number | Publication date |
---|---|
KR890005371B1 (en) | 1989-12-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR860002870A (en) | Integrated circuit devices | |
KR920003644A (en) | Master Slave Flip-Flop Circuit | |
KR890006010A (en) | FM radio receiver | |
KR910005566A (en) | Programmable Square Wave Generator | |
KR880002360A (en) | Tone Generator of Digital Electronic Exchanger | |
JPS554178A (en) | Information control system | |
SU599227A1 (en) | Arrangement for subtracting frequencies of two independent signals | |
KR880000961A (en) | Video memory | |
KR870009599A (en) | Tone generator of digital exchange | |
GB1307270A (en) | Electronic musical instrument having a unified keying circuit | |
KR870003463A (en) | Single Track Modulation Circuit of Digital Audio Equipment | |
KR890004223A (en) | Switch-Driven Clock Switching Circuit | |
KR880008135A (en) | Mixed display control device | |
KR890007502A (en) | Test Logic Circuit Using Counter | |
KR890011405A (en) | PIP data separation circuit using dual port memory | |
KR860009326A (en) | Time unit alarm type other circuit | |
JPS5669931A (en) | Tristate buffer circuit | |
KR940012107A (en) | Data interfacing circuit | |
KR920001839A (en) | System Clock Generation Circuit of Digital System | |
KR910002121A (en) | Frequency Variable Variable PWM Signal Generation Circuit | |
KR970016966A (en) | Latches Data Storage Circuit | |
KR880000847A (en) | Sync signal polarity stabilization circuit | |
KR870005392A (en) | Master latch circuit | |
KR920015742A (en) | Digital Phase Comparison Circuit | |
KR870005302A (en) | Data transmission signal generation circuit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
N231 | Notification of change of applicant | ||
E902 | Notification of reason for refusal | ||
G160 | Decision to publish patent application | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20050929 Year of fee payment: 17 |
|
EXPY | Expiration of term |