Network interface cassette adapter and method
View Patent ↗A network interface cassette for coupling signals between a wireless network and a tape head in a cassette tape player. The network interface cassette includes an enclosure that is conformed to the cassette tape form factor. It contains a transceiver that converts base band signals for radio frequency communications within the wireless network. It also contains a network controller that is coupled to communicate the base band signals with the transceiver. The network controller converts digital audio signals to and from the base band signals. There is an audio processor that converts the digital audio signals to analog audio signals. A coupling means converts the analog audio signals to magnetic audio signals. The coupling means is aligned to couple the magnetic audio signals to the tape head. A power supply with batteries incorporates a spindle driven sensor means to control power and function selection within the device. A wireless user interface adapter is provided to couple microphone and audio signals to the apparatus. Plural communications requests are processed, and include a priority scheme to manage resource contention.
1. An apparatus for interfacing external signals to a cassette tape player having a tape head and a first tape transport spindle, comprising:
an enclosure, conformed to the cassette tape form factor, containing;
a circuit, for converting the external signals to audio signals;
a coupling means, operable to convert said audio signals to magnetic audio signals, and aligned to couple said magnetic audio signals to the tape head, and
a first sensor means operable to detect rotation of the first spindle and coupled to connect electric power to said circuit upon detecting rotation of the first spindle.
2. The apparatus of claim 1 wherein said first sensor means is further coupled to disconnect electric power from said circuit upon sensing cessation of rotation of the first spindle.
3. The apparatus of claim 2 , further comprising:
a timer coupled to said first sensor means, and operable to delay the time between sensing cessation of rotation of the first spindle and the disconnect of electric power.
4. The apparatus of claim 1 wherein said first sensor means is a centrifugal switch.
5. The apparatus of claim 1 wherein said first sensor means comprises a collar adapted to engage the first spindle and a switch coupled to detect movement of said collar.
6. The apparatus of claim 1 wherein said first sensor means is further operable to detect increased rotation speed of the first spindle.
7. The apparatus of claim 6 wherein said first sensor means is a centrifugal switch responsive to a predetermined rotation speed threshold.
8. The apparatus of claim 6 wherein said circuit performs plural functions, and wherein said circuit selects one of said plural functions in response to receipt of a detection of increased rotation speed signal from said first sensor means.
9. The apparatus of claim 6 wherein the apparatus is operable to couple signals between the cassette tape player and external signals from a wireless network, and wherein said circuit further comprises:
a transceiver, operable to convert base band signals for radio frequency communications within the wireless network;
a controller, coupled to communicate the base band signals with said transceiver, and operable to convert audio signals to and from the base band signals, and wherein
said controller operates to select from among plural functions in response to receipt of a detection of increased speed signal from said first sensor means.
10. The apparatus of claim 9 wherein said plural functions include selection of a particular external signal from amongst plural wireless devices communicating in the wireless network.
11. The apparatus of claim 9 wherein said plural functions include selection from among plural Bluetooth commands.
12. The apparatus of claim 1 , wherein the cassette tape player includes a second tape transport spindle, further comprising:
a second sensor means operable to detector rotation of the second spindle.
13. The apparatus of claim 12 wherein said circuit performs plural functions, and wherein said circuit selects one of said plural functions in response to receipt of a detection signal from said second sensor means.
14. An apparatus for interfacing external signals to a cassette tape player having a tape head and a first tape transport spindle, comprising:
an enclosure, conformed to the cassette tape form factor, containing;
a circuit, for converting the external signals to audio signals;
a coupling means, operable to convert said audio signals to magnetic audio signals, and aligned to couple said magnetic audio signals to the tape head;
a first sensor means operable to detect rotation of the first spindle and further operable to detect increased rotation speed of the first spindle, and
a signal generator coupled to output a control signal to the tape head in response to receipt of a detection of increased speed signal from said first sensor means.
15. The apparatus of claim 14 wherein said control signal emulates a “blank space” signal, such as produced between sounds tracks where the tape of an audio cassette passes rapidly across the tape head in auto-search capable cassette players.
16. A method for interfacing external signals to tape head in a cassette tape player having a first tape transport spindle using circuitry disposed within an enclosure conforming to the cassette tape form factor, comprising the steps of:
upon detecting rotation of the first spindle:
converting the external signals to audio signals;
converting the audio signals to magnetic audio signals;
coupling the magnetic audio signals to the tape head, and
coupling electric power to the circuitry upon detecting rotation of the first spindle.
17. The method of claim 16 further comprising the step of disconnecting electric power from the circuitry upon sensing cessation of rotation of the first spindle.
18. The method of claim 17 , further comprising the step of delaying said disconnecting step.
19. The method of claim 16 wherein said detecting step is accomplished centrifugally.
20. The method of claim 16 further comprising the step of detecting increased rotation speed of the first spindle.
21. The method of claim 20 wherein said detecting increased rotation speed is accomplished using a centrifugal switch activated at a predetermined rotation speed threshold.
22. The method of claim 20 wherein the circuitry performs plural functions, further comprising the step of selecting one of said plural functions in response to detecting increased rotation speed of the first spindle.
23. A method for interfacing external signals to tape head in a cassette tape player having a first tape transport spindle using circuitry disposed within an enclosure conforming to the cassette tape form factor, comprising the steps of:
upon detecting rotation of the first spindle:
converting the external signals to audio signals;
converting the audio signals to magnetic audio signals;
coupling the magnetic audio signals to the tape head;
detecting increased rotation speed of the first spindle, and
generating a control signal to the tape head in response to detecting increased rotation speed of the first spindle.
24. The method of claim 23 wherein the control signal emulates a “blank space” signal, such as produced between sounds tracks where the tape of an audio cassette passes rapidly across the tape head in auto-search capable cassette players.
25. The method of claim 20 wherein the circuitry includes a transceiver and a controller and is operable to couple signals with the cassette tape player, and wherein the external signals communicate with a wireless network; further comprising the steps of:
converting base band signals to external signals for radio frequency communications within the wireless network;
communicating the base band signals with said transceiver, and converting audio signals to and from the base band signals, and
selecting from among plural functions in response to said detecting increased rotation speed of the first spindle step.
26. The method of claim 25 wherein the plural functions include selection of a particular external signal from amongst plural wireless devices communicating in the wireless network.
27. The method of claim 25 wherein the plural functions include selection from among plural Bluetooth commands.
28. The method of claim 16 , wherein the cassette tape player includes a second tape transport spindle, further comprising the step of detecting rotation of the second spindle.
29. The method of claim 28 wherein the circuitry performs plural functions, further comprising the step of selecting one of the plural functions in response to said detecting rotation of the second spindle step.