Recording and/or reproducing apparatus with a disc cartridge temperature sensor
AssigneeSony Corporation
InventorsKiyoshi Ohmori, Shoji Iwaasa, Goro Fujita
Life of this patent
Estimating the term…
Abstract
A recording and/or reproducing apparatus into which a disc cartridge accommodating a disc is loaded and in which information signals are adapted to be recorded on or reproduced from the disc. A temperature sensor is provided within the apparatus for contacting with and sensing the temperature of the disc cartridge. By this temperature sensor, the temperature of the loaded disc cartridge is sensed and an output of a light source of an optical head is controlled on the basis of the sensor output to effect recording and/or reproduction of the information signals under an optimum operating state.
Claims15
A recording and/or reproducing apparatus for recording and/or reproducing information signals on or from a disc rotatably mounted within a disc cartridge, the disc cartridge having a recording layer, the apparatus including means for rotating the disc relative to the disc cartridge and light source means for directing a radiation beam onto the recording layer of the disc as the disc rotates, wherein the information signals can be recorded on or reproduced from the recording layer due to interaction between the beam and the recording layer,
- wherein the improvement comprises:
- temperature sensor means for sensing a temperature of the disc cartridge and for generating a temperature signal which corresponds to the temperature;
- computing and controlling means for receiving the temperature signal and controlling the light source means in response to the temperature signal;
- and
- support member means connected to the temperature sensing means for positioning the temperature sensor means in thermal contact with the disc cartridge when the disc cartridge is loaded into the recording and/or reproducing apparatus.
A recording and/or reproducing apparatus for recording and/or reproducing information signals on or from a disc rotatably mounted within a disc cartridge, the disc cartridge having a recording layer, the apparatus including means for rotating the disc relative to the disc cartridge and light source means for directing a radiation beam onto the recording layer of the disc, wherein the information signals can be recorded on or reproduced from the recording layer due to interaction between the beam and the recording layer,
- wherein the improvement comprises:
- a member in thermal contact with the disc cartridge when the disc cartridge is loaded into the recording and/or reproducing apparatus;
- temperature sensor means in thermal contact with the member for sensing a temperature of the member and for generating a temperature signal which corresponds to the temperature;
- and
- computing and controlling means for receiving the temperature signal and controlling the light source in response to the temperature signal.
Dependencies are inferred from the claim text.