1. A method of identifying a plurality of storage medium types, comprising:
(a) creating a first signal and a second signal from light reflected from a storage medium; and
(b) identifying a type of the storage medium based on a first comparison between the first signal and at least one reference value associated with the first signal and a second comparison between the second signal and at least one reference value associated with the second signal and different from the reference value associated with the first signal, wherein the first and second signals are tracking error signals and wherein said identifying identifies the storage medium as a DVD-RAM disk when both a magnitude of the first tracking error signal and a magnitude of the second tracking error signal are greater than their respective reference values.
2. The method of claim 1, wherein the first and second signals are different representations of the same reflected light.
3. The method of claim 1, wherein the first tracking error signal is obtained by a differential phase detection from 4-divided reflected beams, and wherein n the second tracking error signal is obtained from a difference between left-sided and right-sided of the 4-divided reflected beams and a difference between left and right side reflected beams.
4. The method of claim 1, wherein the reference values associated with each of the first and second tracking error signals have two levels being a high level and a low level.
5. The method of claim 1, further comprising:
measuring a frequency of a wobble signal resulting from a shape of tracks formed on the disk; and
determining a capacity of the disk as high capacity when the measured frequency is greater than a first threshold, and wherein the capacity is low capacity otherwise.
6. The method of claim 1, further comprising:
identifying the storage medium as a DVD-ROM disk when the magnitude of the first tracking error signal is greater than the reference value associated with the first tracking error signal and the magnitude of the second tracking error signal is less than the reference value associated with the second tracking error signal.
7. The method of claim 1, further comprising:
identifying the storage medium as a DVD+RW disk or a DVD\u2212RW disk when the magnitude of the first tracking error signal is less than the reference value associated with the first tracking error signal and the magnitude of the second tracking error signal is greater than the reference value associated with the second tracking error signal.
8. The method of claim 7, further comprising:
measuring a frequency of a wobble signal resulting from a shape of tracks formed on the disk; and
determining whether the disk is a DVD+RW disk based on the measured frequency.
9. The method of claim 8, wherein the determining compares the measured frequency to a second threshold and the disk is determined to be a DVD+RW disk when the measured frequency is greater than the second threshold.
10. An apparatus for identifying a type of optical disk, comprising:
a processing unit configured to convert a reflected beam from a loaded optical disk into electrical signals, and generate a first signal and a second signal therefrom; and
a controller configured to identify a type of the loaded optical disk based on a first comparison between a level of the first signal and at least one reference value associated with the first signal and a second comparison between a level of the second signal and at least one reference value associated with the second signal and different from the reference value associated with the first signal, wherein the first and second signals are first and second tracking error signals created from the electrical signals in different ways, and wherein the apparatus further comprises:
a detector to detect magnitudes of the first and second tracking error signals, wherein the controller is configured to identify the optical disk as a DVD-RAM disk when both the magnitude of the first tracking error signal and the magnitude of the second tracking error signal are greater than their respective reference values.
11. The apparatus of claim 10, comprising:
a servo unit to control the processing unit;
a frequency detector to detect a frequency of a wobble signal resulting from a shape of tracks formed on the optical disk; and
a speed detector to detect a rotational speed of a motor rotating the optical disk controlled by the servo unit, wherein the controller is adapted to judge a capacity of the optical disk based on the wobble signal frequency, the rotational speed of the motor, and a current position of the processing unit when the optical disk is identified as the DVD-RAM disk.
12. The apparatus of claim 10, wherein the controller identifies the optical disk as a DVD-ROM disk when the magnitude of the first tracking error signal is greater than the reference value associated with the first tracking error signal and the magnitude of the second tracking error signal is less than the reference value associated with the second tracking error signal.
13. The apparatus of claim 10, wherein the controller identifies the optical disk as a DVD+RW disk or a DVD\u2212RW disk when the magnitude of the first tracking error signal is less than the reference value associated with the first tracking error signal and the magnitude of the second tracking error signal is greater than the reference value associated with the second tracking error signal.
14. The apparatus of claim 13, further comprising:
a frequency detector to detect a frequency of a wobble signal resulting from a shape of tracks formed on the optical disk; and
a speed detector to detect a rotational speed of the optical disk,
wherein the controller is adapted to judge whether the optical disk is the DVD\u2212RW disk based on the wobble signal frequency, the rotational speed of the optical disk, and a current position of the processing unit.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A non-transitory computer readable medium having tangibly stored thereon a computer executable program for implementing the steps comprising:
forming a predetermined registered group wherein each registered member of the predetermined registered group has a banner advertisement to be seen by other registered members of the predetermined registered group, transferring, first, banner advertisements from a server to the registered members of the predetermined registered group by requests of the registered members, analyzing click signals for each banner advertisement which is transferred to the registered member, counting the click signals by each of the registered members registered in the server, and total number of the click signals by all the registered members, deciding a ranking of each of the registered members in the group based on the click signals by each of the registered members with respect to the total number of the click signals by all the registered members in a predetermined time period, and
transferring, second, a banner advertisement to other registered members based on said ranking of each of the registered members when receiving the requests by other registered members.
2. The non-transitory computer readable medium according to claim 1, wherein said click signal analyzing step analyzes and records the banner advertisement which was clicked, the member which clicked, and a time of the clicking.
3. The non-transitory computer readable medium according to claim 2, wherein said program measures a period of time having passed since a previous clicking by a member, and
carries a counting work only when a preset period of time has passed since the previous clicking.
4. The non-transitory computer readable medium according to claim 1, wherein an analysis including data of the accumulated number of clicks on a registered banner advertisement, a ranking for the number of clicks, a number of accesses to a banner advertisement registered by a member, and
ranking of the number of access is visually displayed in a user readable format in response to a manual operation.
5. The non-transitory computer readable medium according to claim 1, further comprising querying a banner advertisement to be transferred to each of the registered members, said querying step utilizing: a preference data accumulation step for accumulating preference data of each of the members, a banner advertisement accumulating step for storing the banner advertisements, and a transfer number data accumulating step, for storing the transfer number and priority order of each of the advertisements, the preference data accumulation step, the banner advertisement accumulating step and the transfer number data accumulation step being such that the transfer number and priority order are counted for each of the banner advertisements owned by each of the registered members, the banner advertisement passing the querying step being transferred to the registered member.