1. Apparatus for applying a signature or other written date to a file or document created, stored andor displayed in html format, the apparatus comprising means for capturing said hand written data in a first data format, means for converting said hand written data into Html format and means for applying said hand written data in html format in said file or document.
2. Apparatus according to claim 1, wherein said hand written data is captured in an image file format.
3. Apparatus according to claim 1, wherein said means for creating and capturing the hand written data comprises a pen-based input strip.
4. Apparatus according to claim 1, comprising means for attaching a key or link into a software package for creating and transmitting documents in html format.
5. Apparatus according to claim 4, wherein said key or link creates an additional option within the software package which, when selected, retrieves the hand written data created on the input strip and captured electronically in image file format, converts the data from an image file to html format, and adds the hand written data to an html document in a user-defined position.
6. Apparatus according to claim 5, wherein said apparatus calls for the hand written data to be created and captured when the key or link is selected and then substantially immediately converts it to html format and adds it to the html document.
7. Apparatus according to claim 1, including means for creating an encryptive code number associated with hand written data which has been created, captured and converted to html format.
8. Apparatus according to claim 7, wherein said encryptive code is arranged to carry information which permits one or more of the following:
a) to produce a visual representation of the signature when decoded (i.e. to allow visual verification by the recipient);
b) to allow a more rigorous comparison of the key characteristics of the signature with a signature previously received from the same sender (i.e. the encrypted code number comprises an encrypted digitised summary of the key characteristics of the incoming signature which can be compared with the encrypted code number associated with a signature previously received from the same sender, and the probability that the writer of the two signatures is the same person can be calculated and displayed);
c) to display the date andor time on the sender’s PC when the handwritten data was added to the document (e.g. when it was signed);
d) to display the date and time on a remote internet server when the handwritten data was added to the document (e.g. when it was signed) if the sender was logged onto the Internet at the time of signature (it should be borne in mind that the encrypted code number might indicate the date and time that the handwritten data was added to the document in the case where it was converted to html format and added to the document in real time, and in the case where a stored image file is converted to html format and added to the document);
e) to display an indication as to whether or not the document has been changed since the handwritten date (e.g. signature) was added;
f) to utilise an optional PIN or security code number (for example, a 5-digit base code) which can be incorporated into the encrypted code number and which has been pre-agreed between two or more parties (for example, verbally), such that the handwritten data (e.g. signature) cannot be visually reproduced and a comparison between the signature and a previously-stored handwritten date (e.g. signature) cannot be performed without the recipient having entered the pre-agreed security code number. It is envisaged the apparatus could be supplied with a default security code number which can be changed by the user(s) if this feature is required to be utilised.
9. A method for applying a signature or other hand written data to a file or document created, stored andor displayed in Html format, the method comprising the steps of capturing the hand written data in a first data format, converting said hand written data into html format, and applying said hand written data in html format to said file or document.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. An optical semiconductor device, comprising:
a first conduction type substrate;
an active layer formed in a stripe over the first conduction type substrate;
a mesa shaped burying layer formed around the active layer and having a larger band gap than that of the active layer; and
a groove that electrically isolates the burying layer,
wherein the section of the burying layer is in an inverse trapezoid shape of which the upper base side is longer than the lower base side.
2. The optical semiconductor device as set forth in claim 1,
wherein the burying layer has a laminated structure of the first conduction type semiconductor layer and a second condition type semiconductor layer.
3. The optical semiconductor device as set forth in claim 2,
wherein the carrier concentrations of the first conduction type semiconductor layer and the second conduction type semiconductor layer are larger than 11017 cm3, respectively.
4. The optical semiconductor device as set forth in claim 1,
wherein a stopping layer for etching is disposed on a bottom face of the groove.
5. The optical semiconductor device as set forth in claim 1, further comprising a resin layer formed in the groove.
6. The optical semiconductor device as set forth in claim 5,
wherein the resin includes benzocyclobutene resin.
7. The optical semiconductor device as set forth in claim 5,
wherein the upper surface of the resin layer is lower than the upper surface of the burying layer, and
further comprising a floating wiring portion formed over the groove.
8. The optical semiconductor device as set forth in claim 1,
wherein no substance is filled in the groove, and
further comprising a floating wiring portion formed over the groove.
9. An optical semiconductor device, comprising:
a first conduction type substrate;
an active layer formed over the first conduction type substrate;
a current confinement layer formed in a ridge stripe on the active layer;
a groove that electrically isolates the current confinement layer, the groove having a space portion; and
a floating wiring portion formed over the groove.
10. An optical semiconductor device, comprising:
a first conduction type substrate;
an active layer formed on the first conduction type substrate; and
a mesa shaped current confinement layer formed on the active layer,
wherein a floating wiring portion is formed around the current confinement layer.
11. A method for fabricating an optical semiconductor device, comprising:
preparing a first conduction type substrate;
forming an active layer in a stripe on the first conduction type substrate;
forming a burying layer around the active layer, the burying layer having a band gap larger than that of the active layer;
forming grooves that isolate the burying layer in a stripe so as to form the section of the burying layer in an inverse trapezoid shape of which the upper base side is longer than the lower base side;
forming a resin layer filled in the groove;
forming wiring on the resin layer; and
selectively etching the resin layer so as to remove all or part of the resin layer and form a space portion in the groove below the wiring.
12. A method for fabricating an optical semiconductor device, comprising:
preparing a first conduction type substrate;
forming an active layer on the first conduction type substrate;
forming a current confinement layer on the active layer;
forming a resin layer filled around the current confinement layer;
forming wiring on the resin layer; and
selectively etching the resin layer so as to remove all or part of the resin layer and form a space portion below the wiring.