Telephone answering device without outgoing message tape
AssigneeHashimoto Koporeishon Kabushiki Kaisah
InventorKazuo Hashimoto
Life of this patent
Estimating the term…
Abstract
A telephone answering device comprises an oscillator circuit for first producing a peculiar signal such as a small Morse code "K" twittering to notify a caller that he is calling a telephone answering device and thereafter intermittently producing "beep" tone signal to notify him that he can continue to send his message, the production of these signals being controlled by the combination of a multi-vibrator circuit and a buffer circuit connected between the oscillator circuit and the multi-vibrator circuit, thereby eliminating an outgoing message tape of a conventional telephone answering device.
Claims11
A telephone answering device with means for controlling an incoming message recorder automatically in response to a calling signal, comprising ringing circuit means for energizing switching means in response to a calling signal;
- timer means energized through said ringing circuit means for starting the operation of said device and to deenergize the ringing circuit means after a predetermined period of time;
- a line transformer comprising a plurality of windings with a first winding connected through said switching means to telephone lines of the telephone answering device, a second winding for transmitting an oscillating signal to the telephone lines, and a third winding for introducing a caller's message to an external incoming message recorder;
- oscillator means with means for energizing said oscillator means through said switching means;
- said oscillator means being energized at the same time as said timer means to produce a predetermined answering signal;
- auxiliary switching means with means for setting auxiliary switching means to be off for a substantially short period of time at every preset time interval;
- and switching gate means connected between said oscillator means and said auxiliary switching means and having means for setting said auxiliary switching means a nonoperative state for substantially a predetermined time interval after energization of the timer means, said auxiliary switching means being switched therafter to an operative state to control thereby the oscillation of said oscillator circuit.
A telephone answering device with means for controlling an incoming message recorder automatically in response to a calling signal, comprising ringing circuit means for energizing switching means in response to a calling signal;
- timer means energized through said ringing circuit means for starting the operation of said device and to deenergize the ringing circuit means after a predetermined period of time;
- a line transformer comprising a plurality of windings with a first winding connected through said switching means to telephone lines of the telephone answering device, a second winding for transmitting an oscillating signal to the telephone lines, and a third winding for introducing a caller's message to an external incoming message recorder;
- oscillator means with means for energizing said oscillator means through said switching means;
- said oscillator means being energized at the same time as said timer means to produce a predetermined answering signal;
- an astable multi-vibrator with means for setting said multi-vibrator to be off for a substantially short period of time at every preset time interval;
- and switching gate means connected between said oscillator means and said astable multi-vibrator and having means for setting said multivibrator non-conductive for substantially a predetermined time interval after energization of the timer means, said multivibrator becoming therafter conductive to control thereby the oscillation of said oscillator circuit.
Dependencies are inferred from the claim text.