US3869671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and circuit arrangement for operating a control-signal transmitter for remote-control equipment
Assignee: Nokia Deutschland GmbH
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Filing: 1973-03-27
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Granted: 1975-03-04
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Expires: 1993-03-27
Abstract
Abstract A battery-powered control signal transmitter for remotely controlling equipment such as television receivers is provided. A remote-control transmitter is of the finger-touch type wherein different control functions, such as channel switching, volume, brightness, and the like are controlled via finger-touch electrodes rather than mechanical operational control.
Inventors
- 👤 Wolfgang Schroder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:45
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/94; H03K17/96; H03K17/9645; H03K17/945; Y; Y10; Y10S; Y10S200/00; Y10S200/02
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
203 words
A control signal transmitter for remote control equipment, comprising: control signal generating means for providing a control signal; at least one control element associated with said control signal generating means for controlling the frequency of the control signal when connected thereto; power source; electronic switch means, having a control input, for connecting the power source to the control signal generating means in response to a signal received at the control input; further electronic switch means, having a control input, for operatively connecting the control element to the control signal generating means in response to a signal received at the control input of the further electronic switch means; touch control switch means for connecting the power source to the control inputs of the electronic switch means and the further electronic switch means for providing a signal thereto so that the control signal generating means is activated and the control element is connected to the signal generating means to provide a predetermined control signal frequency; means for rectifying the control signal; and a capacitor connected to the rectifying means to be charged by the rectified control signal, said capacitor forming an additional voltage source for providing control and operating voltage for the electronic switch means.
Claim 2
Dependent Claim
203 words
A control signal transmitter for remote control equipment, comprising: control signal generating means for providing a control signal; at least one control element associated with said control signal generating means for controlling the frequency of the control signal when connected thereto; power source; electronic switch means, having a control input, for connecting the power source to the control signal generating means in response to a signal received at the control input; further electronic switch means, having a control input, for operatively connecting the control element to the control signal generating means in response to a signal received at the control input of the further electronic switch means; touch control switch means for connecting the power source to the control inputs of the electronic switch means and the further electronic switch means for providing a signal thereto so that the control signal generating means is activated and the control element is connected to the signal generating means to provide a predetermined control signal frequency; means for rectifying the control signal; and a capacitor connected to the rectifying means to be charged by the rectified control signal, said capacitor forming an additional voltage source for providing control and operating voltage for the electronic switch means.
Claim 3
Dependent Claim
33 words
A control signal transmitter as described in claim 1, additionally comprising an electrostatic sound transducer connected to the capacitor so that said capacitor source provides a polarization voltage for the electrostatic sound transducer.
Claim 4
Dependent Claim
35 words
A control signal transmitter as described in claim 1, wherein the capacitor is connected in series with the power to provide additional control voltage so that the current to the electronic switch means is increased.
Claim 5
Dependent Claim
201 words
A control signal transmitter for remote control equipment, comprising: control signal generating means for providing a control signal; a plurality of control elements associated with said control signal generating means for controlling the frequency of the control signal when connected to said control signal generating means; power source; electronic switch means, having a control input, for connecting the power source to the control signal generating means in response to a signal received at the control input; a plurality of further electronic switch means, each having a control input, for operatively connecting control elements to the control signal generating means in response to signals received at the control inputs of the further electronic switch means; and a predetermined number of touch control switch means for connecting the power source to the control input of the electronic switch means and to the control inputs of predetermined combinations of the further electronic switch means for providing a signal to the control inputs so that the control signal generating means is activated and a predetermined combination of Control elements are connected to the control signal generating means so that a different predetermined control signal frequency is produced for each of the touch control switch means.
Claim 6
Dependent Claim
201 words
A control signal transmitter for remote control equipment, comprising: control signal generating means for providing a control signal; a plurality of control elements associated with said control signal generating means for controlling the frequency of the control signal when connected to said control signal generating means; power source; electronic switch means, having a control input, for connecting the power source to the control signal generating means in response to a signal received at the control input; a plurality of further electronic switch means, each having a control input, for operatively connecting control elements to the control signal generating means in response to signals received at the control inputs of the further electronic switch means; and a predetermined number of touch control switch means for connecting the power source to the control input of the electronic switch means and to the control inputs of predetermined combinations of the further electronic switch means for providing a signal to the control inputs so that the control signal generating means is activated and a predetermined combination of Control elements are connected to the control signal generating means so that a different predetermined control signal frequency is produced for each of the touch control switch means.
Claim 7
Dependent Claim
78 words
A control signal transmitter as described in claim 4, wherein the touch control switch means each comprise a pair of spaced electrodes, one electrode connected to the power source and the other electrode to the control input of the electronic switch means and the control inputs of the predetermined combination of the further electronic switch means, said electrodes being spaced so that a finger may bridge the electrodes and provide a current path thereby effectively closing the switch.
Claim 8
Dependent Claim
45 words
A control signal transmitter as described in claim 4, additionally comprising a diode matrix circuit for connecting each touch control switch means to the control input of the electronic switch means and the control inputs of the predetermined combinations of the further electronic switch means.
Claim 9
Dependent Claim
57 words
A control signal transmitter as described in claim 4, wherein each control element has a corresponding further electronic switch means and a corresponding touch control switch means so that touching a touch control switch means causes the corresponding control element to be connected to the control signal generator so that a predetermined control signal frequency is provided.
Claim 10
Dependent Claim
24 words
A control signal transmitter as described in claim 4, wherein the means for transmitting said control signal comprises an ultrasonic transducer for acoustic radiation.
Claim 11
Dependent Claim
44 words
A control signal transmitter as described in claim 4, wherein the control elements comprise capacitors connected by the further electronic switch means to the control signal generating means for tuning the control signal generating means to provide a control signal having a predetermined frequency.
Claim 12
Dependent Claim
43 words
A control signal transmitter as described in claim 9, wherein a diode matrix circuit connects each touch control switch means to the control input of the electronic switch means and the control inputs of the predetermined combinations of the further electronic switch means.
Claim 13
Dependent Claim
43 words
A control signal transmitter as described in claim 9, wherein each capacitor has a corresponding further electronic switch means and a corresponding touch control switch means so that touching a touch control switch means causes a predetermined control signal frequency to be provided.
Claim 14
Dependent Claim
55 words
A control signal transmitter as described in claim 4, wherein the further electronic switch means comprises a transistor having a control electrode connected to the touch control switch means and a diode connected between the collector and emitter of the transistor and orientated to provide a current flow opposite the current flow through the transistor.
Claim 15
Dependent Claim
128 words
A control signal transmitter as described in claim 4, wherein the electronic switch means and the further electronic switch means each comprise complementary transistor types and the touch control switch means connects the control electrode of the electronic switch means to the control electrode of the further electronic switch means, the power source comprises a battery having a positive terminal connected as a reference potential of the electronic switch means and a negative terminal connected as a reference potential of the further electronic switch means so that current flows as turn-on current from the positive terminal of the battery through the control element of the electronic switch means, through the touch control switch means and the control element of the further electronic switch means back to the battery.
Claim 16
Dependent Claim
23 words
A control signal transmitter as described in claim 5, wherein one of each pair of electrodes is connected to form a common electrode.
Claim 17
Dependent Claim
28 words
A control signal transmitter as described in claim 14, wherein the common electrode is connected to a shield for at least a portion of the control signal transmitter.
Claim 18
Dependent Claim
27 words
A control signal transmitter as described in claim 4, wherein the power source is a battery for providing cOntrol and operating voltage for the electronic switch means.
Claim 19
Dependent Claim
84 words
A control signal transmitter as described in claim 4, including three control elements associated with the control signal generating means and eight touch control switch means for selecting one of eight predetermined frequencies, and a diode matrix for connecting the touch control switch means to the control inputs of the electronic switch means and the further electronic switch means so that different predetermined combination of control elements will be connected to the control signal generating means when each touch control switch means is touched.
References Cited (Backward Citations)
US3666988A
Cited
US3737670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |