JPS4975209A - - Google Patents
Info
- Publication number
- JPS4975209A JPS4975209A JP48106061A JP10606173A JPS4975209A JP S4975209 A JPS4975209 A JP S4975209A JP 48106061 A JP48106061 A JP 48106061A JP 10606173 A JP10606173 A JP 10606173A JP S4975209 A JPS4975209 A JP S4975209A
- Authority
- JP
- Japan
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
- H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Noise Elimination (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7238481A FR2207626A6 (en) | 1972-10-25 | 1972-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4975209A true JPS4975209A (en) | 1974-07-19 |
Family
ID=9106431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP48106061A Pending JPS4975209A (en) | 1972-10-25 | 1973-09-21 |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS4975209A (en) |
| DE (1) | DE2347589A1 (en) |
| FR (1) | FR2207626A6 (en) |
| GB (1) | GB1393323A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3936801A (en) * | 1974-09-12 | 1976-02-03 | Bell Telephone Laboratories, Incorporated | Multifrequency signal receiver timing circuit |
| US6111812A (en) * | 1999-07-23 | 2000-08-29 | Micron Technology, Inc. | Method and apparatus for adjusting control signal timing in a memory device |
-
1972
- 1972-10-25 FR FR7238481A patent/FR2207626A6/fr not_active Expired
-
1973
- 1973-09-13 GB GB4317773A patent/GB1393323A/en not_active Expired
- 1973-09-21 DE DE19732347589 patent/DE2347589A1/en active Pending
- 1973-09-21 JP JP48106061A patent/JPS4975209A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2347589A1 (en) | 1974-05-09 |
| GB1393323A (en) | 1975-05-07 |
| FR2207626A6 (en) | 1974-06-14 |