Information-signal recording and reproducing apparatus
First Claim
1. An information-signal recording apparatus comprising:
- first means for rotating an information-signal recording medium having “
n”
places, where “
n”
denotes a predetermined natural number equal to or greater than 2;
a buffer memory for temporarily storing “
n”
information signals inputted at respective “
n”
transfer rates;
second means for reading out the “
n”
information signals from the buffer memory on a time sharing basis;
a head for recording the “
n”
information signals, which have been read out from the buffer memory by the second means, on the “
n”
places of the information-signal recording medium respectively on a time sharing basis at a constant transfer rate higher than the “
n”
transfer rates; and
third means for controlling the buffer memory to absorb a difference between the constant transfer rate provided by the head and the “
n”
transfer rates of the “
n”
information signals inputted into the buffer memory.
1 Assignment
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Accused Products
Abstract
A recording medium has first and second areas on which first and second information signals are recorded respectively. The first information signal has a size Ya. The second information signal has a size Yb. A head operates for reproducing the first and second information signals from the first and second areas of the recording medium and transmitting the reproduced first and second information signals on a time sharing basis and at a predetermined constant transfer rate Rp while moving between the first and second areas of the recording medium. A buffer memory operates for receiving the first and second information signals from the head at the predetermined constant transfer rate Rp, for temporarily storing the first and second information signals, and for outputting the first and second information signals at first and second transfer rates Ra and Rb respectively. The first and second transfer rates Ra and Rb are lower than the predetermined constant transfer rate Rp. The predetermined constant transfer rate Rp, the first transfer rate Ra, the second transfer rate Rb, the size Ya of the first information signal, the size Yb of the second information signal, a seek time Tab taken by the head to move from the first area to the second area of the recording medium, and a seek time Tba taken by the head to move from the second area to the first area of the recording medium are in a relation as follows:
(Ya+Yb)≧Rp•(Ra+Rb)•(Tab+Tba)/(Rp−Ra−Rb).
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Citations
6 Claims
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1. An information-signal recording apparatus comprising:
-
first means for rotating an information-signal recording medium having “
n”
places, where “
n”
denotes a predetermined natural number equal to or greater than 2;
a buffer memory for temporarily storing “
n”
information signals inputted at respective “
n”
transfer rates;
second means for reading out the “
n”
information signals from the buffer memory on a time sharing basis;
a head for recording the “
n”
information signals, which have been read out from the buffer memory by the second means, on the “
n”
places of the information-signal recording medium respectively on a time sharing basis at a constant transfer rate higher than the “
n”
transfer rates; and
third means for controlling the buffer memory to absorb a difference between the constant transfer rate provided by the head and the “
n”
transfer rates of the “
n”
information signals inputted into the buffer memory. - View Dependent Claims (4)
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2. Information-signal recording and reproducing apparatus comprising:
-
first means for rotating an information-signal recording medium;
second means for reproducing at least one of “
n”
information signals from the information-signal recording medium, where “
n”
denotes a predetermined natural number equal to or greater than 2;
a buffer memory for temporarily storing the one of the “
n”
information signals, which has been reproduced from the information-signal recording medium by the second means, and for outputting the one of the “
n”
information signals at corresponding one of “
n”
transfer rates assigned to the “
n”
information signals respectively, the buffer memory being for temporarily storing other ones of the “
n”
information signals which are inputted at corresponding ones of the “
n”
transfer rates respectively;
a head including the second means and being for implementing first action and second action on a time sharing basis, the first action transferring the one of the “
n”
information signals which has been reproduced from the information-signal recording medium to the buffer memory at a constant transfer rate higher than the “
n”
transfer rates, the second action recording the other ones of the “
n”
information signals which have been inputted into the buffer memory on the information-signal recording medium at the constant transfer rate; and
third means for controlling the buffer memory to absorb a difference between the constant transfer rate provided by the head and the “
n”
transfer rates of the “
n”
information signals. - View Dependent Claims (5)
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3. An information-signal reproducing apparatus comprising:
-
first means for rotating an information-signal recording medium having “
n”
places loaded with “
n”
information signals respectively, where “
n”
denotes a predetermined natural number equal to or greater than 2;
second means for reproducing the “
n”
information signals from the “
n”
places of the information-signal recording medium;
a buffer memory for temporarily storing the “
n”
information signals reproduced by the second means, and for outputting the “
n”
information signals at “
n”
transfer rates respectively;
a head including the second means and being for reproducing the “
n”
information signals from the “
n”
places of the information-signal recording medium on a time sharing basis, for transferring the reproduced “
n”
information signals to the buffer memory on a time sharing basis at a constant transfer rate higher than the “
n”
transfer rates; and
third means for controlling the buffer memory to absorb a difference between the constant transfer rate provided by the head and the “
n”
transfer rates of the “
n”
information signals. - View Dependent Claims (6)
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Specification