| US 7,564,983 B2 | ||
| Audio playback device capable of independent operations in dual modes | ||
| Akira Ibuka, Tokyo (Japan); Kuniko Yamasaki, Tokyo (Japan); and Yoshihide Koyama, Tokyo (Japan) | ||
| Assigned to Clarion Co., Ltd., Tokyo (Japan) | ||
| Filed on Sep. 26, 2003, as Appl. No. 10/670,523. | ||
| Claims priority of application No. P2002-282972 (JP), filed on Sep. 27, 2002; and application No. P2003-020089 (JP), filed on Jan. 29, 2003. | ||
| Prior Publication US 2004/0125703 A1, Jul. 01, 2004 | ||
| Int. Cl. H02B 1/00 (2006.01) | ||
| U.S. Cl. 381—123 [381/86; 369/2] | 23 Claims |
| 1. A play-back device comprising:
a plurality of play-back sources;
a first output unit and a second output unit for selecting at least one of the play-back sources to output play-back signals
from the at least one of the play-back sources;
a first operation unit for operations relating to the first output unit;
a second operation unit for operations relating to the second output unit;
a control unit for deciding whether the first output unit and the second output unit have selected a common play-back source
and whether the play-back signals from the common play-back source are in an output-stopped state and for inhibiting the release
of the output-stopped state from a lower priority one of the first operation unit and the second operation unit in response
to the control unit deciding that the play-back signals from the common play-back source are in an output-stopped state; and
a priority setting unit for setting a priority for the first operation unit and the second operation unit.
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