Function selecting method and system for an audio/video recording and reproducing system
First Claim
1. A function selection apparatus for selecting a function of an audio/video recording/reproducing system comprising:
- a plurality of signal sources;
a control device including a selection circuit having a plurality of function select switches for selecting any one of the plurality of signal sources, said function select switches being disposed in respective signal transmission lines, a plurality of function switches provided corresponding to said plurality of signal sources, and function control means disposed between said plurality of function switches and said selection circuit responsive to the closure of one of said plurality of function switches for controlling one of said plurality of function selection switches corresponding to the closed function switch so as to select one of said signal sources corresponding to the closed function switch;
an external unit comprising reproducing means forming at least one of said plurality of signal sources, said external unit including therein a motive switch and a control circuit for controlling the operation of said reproducing means corresponding to said motive switch when said motive switch is closed;
first control means provided in said control device and responsive to the closure of said motive switch for controlling a corresponding one of said plurality of function switches to make it equivalently closed;
a control transmission line provided between said external unit and said control means for transmitting a signal indicative of the closure of said motive switch to said control means; and
second control means disposed between said plurality of function switches and said motive switch of the external unit and responsive to the closure of one of said function switches corresponding to said external unit to render the motive switch corresponding to the closed function switch equivalently in the closed state.
3 Assignments
0 Petitions
Accused Products
Abstract
An audio/video recording and reproducing system having a discrete function unit such as tape deck, record player or tuner connected thereto includes a function selection circuit and a function specifying switch disposed in a main unit, such as a pre/main amplifier, and a control line, such as remote control line, for connecting the main unit and the discrete unit. By virtue of the function selection circuit, the selection of a desired discrete function unit can be carried out at the main unit. However, in addition to this, the system includes an arrangement for permitting selection of a desired discrete function unit at the discrete function unit itself, and, when this is done, for controlling the function selection at the main unit to select the output of the discrete function unit.
19 Citations
7 Claims
-
1. A function selection apparatus for selecting a function of an audio/video recording/reproducing system comprising:
-
a plurality of signal sources; a control device including a selection circuit having a plurality of function select switches for selecting any one of the plurality of signal sources, said function select switches being disposed in respective signal transmission lines, a plurality of function switches provided corresponding to said plurality of signal sources, and function control means disposed between said plurality of function switches and said selection circuit responsive to the closure of one of said plurality of function switches for controlling one of said plurality of function selection switches corresponding to the closed function switch so as to select one of said signal sources corresponding to the closed function switch; an external unit comprising reproducing means forming at least one of said plurality of signal sources, said external unit including therein a motive switch and a control circuit for controlling the operation of said reproducing means corresponding to said motive switch when said motive switch is closed; first control means provided in said control device and responsive to the closure of said motive switch for controlling a corresponding one of said plurality of function switches to make it equivalently closed; a control transmission line provided between said external unit and said control means for transmitting a signal indicative of the closure of said motive switch to said control means; and second control means disposed between said plurality of function switches and said motive switch of the external unit and responsive to the closure of one of said function switches corresponding to said external unit to render the motive switch corresponding to the closed function switch equivalently in the closed state. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
Specification