Home

Primary Examiner: Claffy, Kathleen H.
Assistant Examiner: Myers, Randall P.
Attorney: Goldman; Ronald M.

Next ten patents ordered by date:

Automatic cable balancing network
Keyboard assembly with overlapped flexible printed circuit cable switch
Starting system
Contact system for an outdoor electrical switch
Stock sensing device
Electrical switch construction
Liquid-level indicating means
High-voltage electric circuit breaker comprising series-connected vacuum interrupter and fluid blast interrupter
Pushbutton switch
Detent component

Translate:
En
De
Es
Fr
It
Pt
Ja
Ko
Zh

Title: Touch-to-rotary converter for a telephone instrument

Abstract: A touch type dial digit selector to rotary type dial digit sender converts touch type dial input information to a rotary type dial output and includes a touch type selector pad having the ten digit selecting push buttons arranged in four rows and three columns and associated row and column switches, an encoder for converting the information represented by the operation of the row and column switches into a four-bit binary code, a storage and pulsing circuit for receiving the digit information, and providing at an output the series of pulses representative of the dialed number. The storage and pulsing circuit includes a strobe input for initiating the registration of the input information by the storage and pulsing circuit. Means responsive to the concurrent operation of at least one row switch and at least one column switch of said touch type selector provide a strobe pulse to said strobe input at the end of a predetermined time interval greater than N seconds.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Hoehn, Steven Jon (Redwood City, CA, US)
Jackson, Joseph Monroe (Menlo Park, CA, US)

Application Number: 568601
Filing Date: 1975-04-16
Publication_date: 1976-09-21
Assignee: Litton Business Telephone Systems, Inc. (Sunnyvale, CA)
Primary Class(es): 379/353 379/355.09, 379/387.01
Other Classes:
US Patent Ref:

3270144	Aug, 1966	Vogel et al.	179/16.
3538256	Nov, 1970	Lucas	179/90.
3653038	Mar, 1972	Webb et al.	179/90.
3686444	Aug, 1972	Stevenson	179/81.
3686445	Aug, 1972	Barnaby et al.	179/90.
3787639	Jan, 1974	Battrick	179/90.
3856982	Dec, 1974	Lawson et al.	179/90.
3879584	Apr, 1975	McCabe et al.	179/90.
3881070	Apr, 1975	McCabe et al.	179/90.

Other Refs: Other References: Norelco "Prestafone" Technical Bulletins, North American Philips Corp., Form SB-17-01 and SB-17-02, Received Apr. 30, 1973.
Pulse, Digital, and Switching Waveforms, Millman & Taub, 1965, p. 335.